Misplaced Pages

#993006

94-404: The ironmaster was usually a large-scale entrepreneur and thus an important member of a community. He would have a large country house or mansion as his residence. The organization of operations surrounding the smelting , refining , and casting of iron was labour-intensive, and so there would be numerous workers reliant on the furnace works. There were ironmasters (possibly not called such) from

188-565: A Bessemer converter or by other means including smelting reduction processes such as the Corex Process . Smelting has serious effects on the environment , producing wastewater and slag and releasing such toxic metals as copper , silver, iron, cobalt , and selenium into the atmosphere. Smelters also release gaseous sulfur dioxide , contributing to acid rain , which acidifies soil and water. The smelter in Flin Flon, Canada

282-549: A feminist movement developed. Parental authority was seen as important, but children were given legal protections against abuse and neglect for the first time towards the end of the period. Access to education increased rapidly during the 19th century. State-funded schools were established in England and Wales for the first time. Education became compulsory for pre-teenaged children in England, Scotland and Wales. Literacy rates increased rapidly, and had become nearly universal by

376-604: A democracy. The political legacy of the reform movement was to link the nonconformists (part of the evangelical movement) in England and Wales with the Liberal Party . This continued until the First World War . The Presbyterians played a similar role as a religious voice for reform in Scotland. Religion was politically controversial during this era, with Nonconformists pushing for the disestablishment of

470-455: A fashion among employers for providing welfare services to their workers, led to relative social stability. The Chartist movement for working-class men to be given the right to vote, which had been prominent in the early Victorian period, dissipated. Government involvement in the economy was limited. Only in the post-World War II period , around a century later, did the country experience substantial economic growth again. But whilst industry

564-424: A hammer to produce wrought iron . Some of the earliest evidence to date for the bloomery smelting of iron is found at Tell Hammeh , Jordan, radiocarbon-dated to c.  930 BC . From the medieval period, an indirect process began to replace the direct reduction in bloomeries. This used a blast furnace to make pig iron , which then had to undergo a further process to make forgeable bar iron. Processes for

658-709: A low concentration of sulfur dioxide that was difficult to capture; a new generation of copper smelting technologies has supplanted them. More recent furnaces exploit bath smelting, top-jetting lance smelting, flash smelting , and blast furnaces. Some examples of bath smelters include the Noranda furnace, the Isasmelt furnace, the Teniente reactor, the Vunyukov smelter, and the SKS technology. Top-jetting lance smelters include

752-445: A major employer and industry in their own right. Expected standards of personal conduct changed in around the first half of the 19th century, with good manners and self-restraint becoming much more common. Historians have suggested various contributing factors, such as Britain's major conflicts with France during the early 19th century, meaning that the distracting temptations of sinful behaviour had to be avoided in order to focus on

846-554: A new type of coking oven . This was a precursor to the later work of Abraham Darby I who successfully used coke to smelt iron. Three successive generations of the same family all bearing the name Abraham Darby are renowned for their contributions to the development of the English iron industry. Their works at Coalbrookdale in Shropshire nurtured the start of improvements in metallurgy that allowed large-scale production of

940-481: A range of more complex organic compounds known collectively as polycyclic aromatic hydrocarbons (PAH). Treatment technologies include recycling of wastewater; settling basins , clarifiers and filtration systems for solids removal; oil skimmers and filtration; chemical precipitation and filtration for dissolved metals; carbon adsorption and biological oxidation for organic pollutants; and evaporation. Pollutants generated by other types of smelters varies with

1034-430: A rise in prosecutions for illegal sodomy in the middle of the 19th century. Male sexuality became a favourite subject of medical researchers' study. For the first time, all male homosexual acts were outlawed. Concern about sexual exploitation of adolescent girls increased during the period, especially following the white slavery scandal , which contributed to the increasing of the age of consent from 13 to 16 . At

SECTION 10

#1732783962994

1128-546: A role in economic life but exploitation of their labour became especially intense during the Victorian era. Children were put to work in a wide range of occupations, but particularly associated with this period are factories. Employing children had advantages, as they were cheap, had limited ability to resist harsh working conditions, and could enter spaces too small for adults. Some accounts exist of happy upbringings involving child labour, but conditions were generally poor. Pay

1222-434: A secondary service after the reduction step is complete; they provide a molten cover on the purified metal, preventing contact with oxygen while still hot enough to readily oxidize. This prevents impurities from forming in the metal. The ores of base metals are often sulfides. In recent centuries, reverberatory furnaces have been used to keep the charge being smelted separately from the fuel. Traditionally, they were used for

1316-573: A substantial part of the metropolis... In big, once handsome houses, thirty or more people of all ages may inhabit a single room Hunger and poor diet was a common aspect of life across the UK in the Victorian period, especially in the 1840s, but the mass starvation seen in the Great Famine in Ireland was unique. Levels of poverty fell significantly during the 19th century from as much as two thirds of

1410-475: A symbol of the British Empire. Queen Victoria died on 22 January 1901. The Victorian era saw a rapidly growing middle class who became an important cultural influence, to a significant extent replacing the aristocracy as British society's dominant class. A distinctive middle-class lifestyle developed that influenced what society valued as a whole. Increased importance was placed on the value of

1504-687: A time when job options for women were limited and generally low-paying, some women, particularly those without familial support, took to prostitution to support themselves. Attitudes in public life and among the general population to prostitution varied. Evidence about prostitutes' situation also varies. One contemporary study argues that the trade was a short-term stepping stone to a different lifestyle for many women, while another, more recent study argues they were subject to physical abuse, financial exploitation, state persecution, and difficult working conditions. Due to worries about venereal disease , especially among soldiers, women suspected of prostitution were for

1598-461: A wide range of new inventions. This led Great Britain to become the foremost industrial and trading nation of the time. Historians have characterised the mid-Victorian era (1850–1870) as Britain's 'Golden Years', with national income per person increasing by half. This prosperity was driven by increased industrialisation, especially in textiles and machinery, along with exports to the empire and elsewhere. The positive economic conditions, as well as

1692-569: A wide-ranging change to the electoral system of England and Wales . Definitions that purport a distinct sensibility or politics to the era have also created scepticism about the worth of the label 'Victorian', though there have also been defences of it. Michael Sadleir was insistent that "in truth, the Victorian period is three periods, and not one". He distinguished early Victorianism—the socially and politically unsettled period from 1837 to 1850 —and late Victorianism (from 1880 onwards), with its new waves of aestheticism and imperialism , from

1786-420: Is a process of applying heat and a chemical reducing agent to an ore to extract a desired base metal product. It is a form of extractive metallurgy that is used to obtain many metals such as iron , copper , silver , tin , lead and zinc . Smelting uses heat and a chemical reducing agent to decompose the ore, driving off other elements as gases or slag and leaving the metal behind. The reducing agent

1880-455: Is commonly a fossil-fuel source of carbon , such as carbon monoxide from incomplete combustion of coke —or, in earlier times, of charcoal . The oxygen in the ore binds to carbon at high temperatures, as the chemical potential energy of the bonds in carbon dioxide (CO 2 ) is lower than that of the bonds in the ore. Sulfide ores such as those commonly used to obtain copper, zinc or lead, are roasted before smelting in order to convert

1974-542: Is easily produced during the heating process, and as a gas comes into intimate contact with the ore. In the Old World , humans learned to smelt metals in prehistoric times, more than 8000 years ago. The discovery and use of the "useful" metals – copper and bronze at first, then iron a few millennia later – had an enormous impact on human society. The impact was so pervasive that scholars traditionally divide ancient history into Stone Age , Bronze Age , and Iron Age . In

SECTION 20

#1732783962994

2068-456: Is now called classical music was somewhat undeveloped compared to parts of Europe but did have significant support. Photography became an increasingly accessible and popular part of everyday life. Many sports were introduced or popularised during the Victorian era. They became important to male identity. Examples included cricket , football , rugby , tennis and cycling . The idea of women participating in sport did not fit well with

2162-408: Is occasionally found in commercially significant quantities. These minerals are primarily carbonates , sulfides , or oxides of the metal, mixed with other components such as silica and alumina . Roasting the carbonate and sulfide minerals in the air converts them to oxides. The oxides, in turn, are smelted into the metal. Carbon monoxide was (and is) the reducing agent of choice for smelting. It

2256-597: Is only marginally harder, and had even less impact by itself. The earliest evidence for iron-making is a small number of iron fragments with the appropriate amounts of carbon admixture found in the Proto-Hittite layers at Kaman-Kalehöyük and dated to 2200–2000 BC. Souckova-Siegolová (2001) shows that iron implements were made in Central Anatolia in very limited quantities around 1800 BC and were in general use by elites, though not by commoners, during

2350-562: Is unknown. The first such bronzes may have been a lucky accident from tin-contaminated copper ores. However, by 2000 BC, people were mining tin on purpose to produce bronze—which is remarkable as tin is a semi-rare metal, and even a rich cassiterite ore only has 5% tin. The discovery of copper and bronze manufacture had a significant impact on the history of the Old World . Metals were hard enough to make weapons that were heavier, stronger, and more resistant to impact damage than wood, bone, or stone equivalents. For several millennia, bronze

2444-517: The Americas , pre- Inca civilizations of the central Andes in Peru had mastered the smelting of copper and silver at least six centuries before the first Europeans arrived in the 16th century, while never mastering the smelting of metals such as iron for use with weapon craft. Copper was the first metal to be smelted. How the discovery came about is debated. Campfires are about 200 °C short of

2538-530: The Church of England . Nonconformists comprised about half of church attendees in England in 1851, and gradually the legal discrimination that had been established against them outside of Scotland was removed. Legal restrictions on Roman Catholics were also largely removed . The number of Catholics grew in Great Britain due to conversions and immigration from Ireland . Secularism and doubts about

2632-755: The Georgian era and preceded the Edwardian era , and its later half overlaps with the first part of the Belle Époque era of continental Europe. Various liberalising political reforms took place in the UK, including expanding the electoral franchise. The Great Famine caused mass death in Ireland early in the period. The British Empire had relatively peaceful relations with the other great powers . It participated in various military conflicts mainly against minor powers. The British Empire expanded during this period and

2726-619: The New Hittite Empire (~1400–1200 BC). Archaeologists have found indications of iron working in Ancient Egypt , somewhere between the Third Intermediate Period and 23rd Dynasty (ca. 1100–750 BC). Significantly though, they have found no evidence of iron ore smelting in any (pre-modern) period. In addition, very early instances of carbon steel were in production around 2000 years ago (around

2820-570: The Pax Britannica , was a time of relatively peaceful relations between the world's great powers . This is particularly true of Britain's interactions with the others. The only war in which the British Empire fought against another major power was the Crimean War , from 1853 to 1856. There were various revolts and violent conflicts within the British Empire, and Britain participated in wars against minor powers. It also took part in

2914-587: The 'workshop of the world', Britain was uniquely advanced in technology in the mid-19th century. Engineering, having developed into a profession in the 18th century, gained new profile and prestige in this period. The Victorian era saw methods of communication and transportation develop significantly. In 1837, William Fothergill Cooke and Charles Wheatstone invented the first telegraph system . This system, which used electrical currents to transmit coded messages, quickly spread across Britain, appearing in every town and post office. A worldwide network developed towards

Ironmaster - Misplaced Pages Continue

3008-730: The 17th century onward, but they became more prominent with the great expansion in the British iron industry during the Industrial Revolution. An early ironmaster was John Winter (about 1600–1676) who owned substantial holdings in the Forest of Dean . During the English Civil War he cast cannons for Charles I . Following the Restoration , Winter developed his interest in the iron industry, and experimented with

3102-587: The 1880s, sanitation was inadequate in areas such as water supply and disposal of sewage. This all had a negative effect on health, especially that of the impoverished young. For instance, of the babies born in Liverpool in 1851, only 45 per cent survived to age 20. It had been hoped that there would be a rapid improvement following the Public Baths and Wash-houses Act 1846. This was the first legislation to empower local authorities in England and Wales to fund

3196-413: The 19th century and germ theory was developed for the first time. Doctors became more specialised and the number of hospitals grew. The overall number of deaths fell by about 20%. The life expectancy of women increased from around 42 to 55 and 40 to 56 for men. In spite of this, the mortality rate fell only marginally, from 20.8 per thousand in 1850 to 18.2 by the end of the century. Urbanisation aided

3290-550: The 19th century for the first time in history, improved nutrition, and a lower overall mortality rate. Ireland's population shrank significantly, mostly due to emigration and the Great Famine. The professionalisation of scientific study began in parts of Europe following the French Revolution but was slow to reach Britain. William Whewell coined the term 'scientist' in 1833 to refer to those who studied what

3384-454: The Bible. A variety of reading materials grew in popularity during the period, including novels, women's magazines, children's literature, and newspapers. Much literature, including chapbooks , was distributed on the street. Music was also very popular, with genres such as folk music , broadsides , music halls , brass bands , theater music and choral music having mass appeal. What

3478-490: The British Empire, reform included rapid expansion, the complete abolition of slavery in the African possessions and the end of transportation of convicts to Australia . Restrictions on colonial trade were loosened and responsible (i.e. semi-autonomous) government was introduced in some territories. Throughout most of the 19th century Britain was the most powerful country in the world. The period from 1815 to 1914 , known as

3572-546: The Mitsubishi smelting reactor. Flash smelters account for over 50% of the world's copper smelters. There are many more varieties of smelting processes, including the Kivset, Ausmelt, Tamano, EAF, and BF. Of the seven metals known in antiquity , only gold regularly occurs in nature as a native metal . The others – copper , lead , silver , tin , iron , and mercury – occur primarily as minerals, although native copper

3666-553: The Origin of Species (1859), which sought to explain biological evolution by natural selection, gained a high profile in the public consciousness. Simplified (and at times inaccurate) popular science was increasingly distributed through a variety of publications which caused tension with the professionals. There were significant advances in various fields of research, including statistics , elasticity , refrigeration , natural history , electromagnetism , and logic . Known as

3760-472: The Victorian era covers the duration of Victoria's reign as Queen of the United Kingdom of Great Britain and Ireland , from her accession on 20 June 1837—after the death of her uncle, William IV —until her death on 22 January 1901, after which she was succeeded by her eldest son, Edward VII . Her reign lasted 63 years and seven months, a longer period than any of her predecessors. The term 'Victorian'

3854-420: The Victorian heyday: mid-Victorianism, 1851 to 1879. He saw the latter period as characterised by a distinctive mixture of prosperity, domestic prudery , and complacency —what G. M. Trevelyan called the 'mid-Victorian decades of quiet politics and roaring prosperity'. The Reform Act , which made various changes to the electoral system including expanding the franchise, had been passed in 1832. The franchise

Ironmaster - Misplaced Pages Continue

3948-638: The Victorian view of femininity, but their involvement did increase as the period progressed. For the middle classes, many leisure activities such as table games could be done in the home while domestic holidays to rural locations such as the Lake District and Scottish Highlands were increasingly practical. The working classes had their own culture separate from that of their richer counterparts, various cheaper forms of entertainment and recreational activities provided by philanthropy . Trips to resorts such as Blackpool were increasingly popular towards

4042-451: The West." The rapid growth in the urban population included the new industrial and manufacturing cities, as well as service centres such as Edinburgh and London. Private renting from housing landlords was the dominant tenure. P. Kemp says this was usually of advantage to tenants. Overcrowding was a major problem with seven or eight people frequently sleeping in a single room. Until at least

4136-504: The accuracy of the Old Testament grew among people with higher levels of education. Northern English and Scottish academics tended to be more religiously conservative, whilst agnosticism and even atheism (though its promotion was illegal) gained appeal among academics in the south. Historians refer to a 'Victorian Crisis of Faith', a period when religious views had to readjust to accommodate new scientific knowledge and criticism of

4230-418: The ancient world. It is too soft to use for structural elements or weapons, though its high density relative to other metals makes it ideal for sling projectiles. However, since it was easy to cast and shape, workers in the classical world of Ancient Greece and Ancient Rome used it extensively to pipe and store water. They also used it as a mortar in stone buildings. Tin was much less common than lead,

4324-461: The base metal ore. For example, aluminum smelters typically generate fluoride , benzo(a)pyrene , antimony and nickel, as well as aluminum. Copper smelters typically discharge cadmium, lead, zinc , arsenic and nickel, in addition to copper. Lead smelters may discharge antimony , asbestos, cadmium, copper and zinc, in addition to lead. Labourers working in the smelting industry have reported respiratory illnesses inhibiting their ability to perform

4418-411: The basis for welfare provision into the 20th century. While many people were prone to vices, not least alcoholism, historian Bernard A. Cook argues that the main reason for 19th century poverty was that typical wages for much of the population were simply too low. Barely enough to provide a subsistence living in good times, let alone save up for bad. Improvements were made over time to housing along with

4512-466: The building of public baths and wash houses but, since the act was only permissive rather than mandatory, improvement was slow. Conditions were particularly bad in London, where the population rose sharply and poorly maintained, overcrowded dwellings became slum housing. Kellow Chesney wrote of the situation: Hideous slums, some of them acres wide, some no more than crannies of obscure misery, make up

4606-489: The children in school; in 1840 only about 20 per cent of the children in London had any schooling. By the 1850s, around half of the children in England and Wales were in school (not including Sunday school ). From the 1833 Factory Act onwards, attempts were made to get child labourers into part time education, though this was often difficult to achieve. Only in the 1870s and 1880s did children begin to be compelled into school. Work continued to inhibit children's schooling into

4700-797: The diplomatic struggles of the Great Game and the Scramble for Africa . In 1840, Queen Victoria married her German cousin Prince Albert of Saxe-Coburg and Gotha . The couple had nine children, who themselves married into various royal families, and the queen thus became known as the 'grandmother of Europe'. In 1861, Albert died. Victoria went into mourning and withdrew from public life for ten years. In 1871, with republican sentiments growing in Britain, she began to return to public life. In her later years, her popularity soared as she became

4794-408: The discovery happened several millennia before the invention of writing, there is no written record of how it was made. However, tin and lead can be smelted by placing the ores in a wood fire, leaving the possibility that the discovery may have occurred by accident. Recent scholarship however has called this find into question. Lead is a common metal, but its discovery had relatively little impact in

SECTION 50

#1732783962994

4888-401: The early 20th century. 19th-century Britain saw a huge population increase accompanied by rapid urbanisation stimulated by the Industrial Revolution. In the 1901 census , more than three out of every four people were classified as living in an urban area, compared to one in five a century earlier. Historian Richard A. Soloway wrote that "Great Britain had become the most urbanized country in

4982-692: The economy of the northeast of England. Bell accumulated a large fortune, with mansions including Washington New Hall , Rounton Grange near Northallerton , and the mediaeval Mount Grace Priory near Osmotherley . Henry Bolckow (1806–1878) and John Vaughan (1799–1868) were lifelong business partners, friends, and brothers-in-law. They established what became the largest of all Victorian era iron and steel companies, Bolckow Vaughan , in Middlesbrough. Bolckow brought financial acumen, and Vaughan brought ironmaking and engineering expertise. The two men trusted each other implicitly and "never interfered in

5076-424: The end of period. Initially the industrial revolution increased working hours, but over the course of the 19th century a variety of political and economic changes caused them to fall back down to and in some cases below pre-industrial levels, creating more time for leisure. Before the Industrial Revolution, daily life had changed little for hundreds of years. The 19th century saw rapid technological development with

5170-453: The end of the century. Private education for wealthier children, boys and more gradually girls, became more formalised over the course of the century. The growing middle class and strong evangelical movement placed great emphasis on a respectable and moral code of behaviour. This included features such as charity, personal responsibility, controlled habits, child discipline and self-criticism. As well as personal improvement, importance

5264-470: The end of the century. In 1876, an American patented the telephone . A little over a decade later, 26,000 telephones were in service in Britain. Multiple switchboards were installed in every major town and city. Guglielmo Marconi developed early radio broadcasting at the end of the period. The railways were important economically in the Victorian era, allowing goods, raw materials, and people to be moved around, stimulating trade and industry. They were also

5358-513: The establishment of trade networks that spanned large areas of Europe and Asia and had a major effect on the distribution of wealth among individuals and nations. The earliest known cast lead beads were thought to be in the Çatalhöyük site in Anatolia ( Turkey ), and dated from about 6500 BC. However, recent research has discovered that this was not lead, but rather cerussite and galena, minerals rich in, but distinct from, lead. Since

5452-516: The family, and the idea that marriage should be based on romantic love gained popularity. A clear separation was established between the home and the workplace, which had often not been the case before. The home was seen as a private environment, where housewives provided their husbands with a respite from the troubles of the outside world. Within this ideal, women were expected to focus on domestic matters and to rely on men as breadwinners. Women had limited legal rights in most areas of life, and

5546-513: The final oxygen atoms from the raw metal. The carbon source acts as a chemical reactant to remove oxygen from the ore, yielding the purified metal element as a product. The carbon source is oxidized in two stages. First, carbon (C) combusts with oxygen (O 2 ) in the air to produce carbon monoxide (CO). Second, the carbon monoxide reacts with the ore (e.g. Fe 2 O 3 ) and removes one of its oxygen atoms, releasing carbon dioxide (CO 2 ). After successive interactions with carbon monoxide, all of

5640-429: The first step of smelting: forming two liquids, one an oxide slag containing most of the impurities, and the other a sulfide matte containing the valuable metal sulfide and some impurities. Such "reverb" furnaces are today about 40 meters long, 3 meters high, and 10 meters wide. Fuel is burned at one end to melt the dry sulfide concentrates (usually after partial roasting) which are fed through openings in

5734-414: The first time. Whilst some attempts were made to improve living conditions, slum housing and disease remained a severe problem. The period saw significant scientific and technological development. Britain was advanced in industry and engineering in particular, but somewhat undeveloped in art and education. Great Britain's population increased rapidly, while Ireland's fell sharply. In the strictest sense,

SECTION 60

#1732783962994

5828-454: The first-century .) in northwest Tanzania , based on complex preheating principles. These discoveries are significant for the history of metallurgy. Most early processes in Europe and Africa involved smelting iron ore in a bloomery , where the temperature is kept low enough so that the iron does not melt. This produces a spongy mass of iron called a bloom, which then must be consolidated with

5922-456: The forceful patriarch of an ironmaking dynasty. Both his son Hugh Bell and his grandson Maurice Bell were directors of the Bell iron and steel company. His father, Thomas Bell, was a founder of Losh, Wilson and Bell , an iron and alkali company. The firm had works at Walker, near Newcastle upon Tyne , and at Port Clarence , Middlesbrough , contributing largely to the growth of those towns and of

6016-451: The iron that made the development of steam engines and railways possible, although their most notable innovation was The Iron Bridge . One of the best-known ironmasters of the early part of the industrial revolution was John Wilkinson (1728–1808), who was considered to have "iron madness", extending even to making cast iron coffins. Wilkinson's patented method for boring iron cylinders was first used to create cannons, but later provided

6110-420: The management of sewage and water eventually giving the UK the most advanced system of public health protection anywhere in the world. The quality and safety of household lighting improved over the period with oil lamps becoming the norm in the early 1860s, gas lighting in the 1890s and electric lights beginning to appear in the homes of the richest by the end of the period. Medicine advanced rapidly during

6204-411: The metal out of its ore. Most ores are the chemical compound of the metal and other elements, such as oxygen (as an oxide ), sulfur (as a sulfide ), or carbon and oxygen together (as a carbonate ). To extract the metal, workers must make these compounds undergo a chemical reaction . Smelting, therefore, consists of using suitable reducing substances that combine with those oxidizing elements to free

6298-490: The metal. In the case of sulfides and carbonates, a process called " roasting " removes the unwanted carbon or sulfur, leaving an oxide, which can be directly reduced. Roasting is usually carried out in an oxidizing environment. A few practical examples: Reduction is the final, high-temperature step in smelting, in which the oxide becomes the elemental metal. A reducing environment (often provided by carbon monoxide, made by incomplete combustion in an air-starved furnace) pulls

6392-444: The middle of the 19th century to 'diminished cruelty to animals, criminals, lunatics, and children (in that order)'. Legal restrictions were placed on cruelty to animals. Restrictions were placed on the working hours of child labourers in the 1830s and 1840s. Further interventions took place throughout the century to increase the level of child protection. Use of the death penalty also decreased. Crime rates fell significantly in

6486-494: The middle- and working-classes a role in politics. However, all women and a large minority of men remained outside the system into the early 20th century. Cities were given greater political autonomy and the labour movement was legalised. From 1845 to 1852, the Potato Famine caused mass starvation, disease and death in Ireland, sparking large-scale emigration. The Corn Laws were repealed in response to this. Across

6580-722: The oldest evidence, now appears to be hammered, native copper. Combining copper with tin and/or arsenic in the right proportions produces bronze , an alloy that is significantly harder than copper. The first copper/arsenic bronzes date from 4200 BC from Asia Minor . The Inca bronze alloys were also of this type. Arsenic is often an impurity in copper ores, so the discovery could have been made by accident. Eventually, arsenic-bearing minerals were intentionally added during smelting. Copper–tin bronzes, harder and more durable, were developed around 3500 BC, also in Asia Minor. How smiths learned to produce copper/tin bronzes

6674-464: The ore during smelting to catalyze the desired reactions and to chemically bind to unwanted impurities or reaction products. Calcium carbonate or calcium oxide in the form of lime are often used for this purpose, since they react with sulfur, phosphorus, and silicon impurities to allow them to be readily separated and discarded, in the form of slag. Fluxes may also serve to control the viscosity and neutralize unwanted acids. Flux and slag can provide

6768-431: The oxygen in the ore will be removed, leaving the raw metal element (e.g. Fe). As most ores are impure, it is often necessary to use flux , such as limestone (or dolomite ), to remove the accompanying rock gangue as slag. This calcination reaction emits carbon dioxide. The required temperature varies both in absolute terms and in terms of the melting point of the base metal. Examples: Fluxes are materials added to

6862-701: The physical tasks demanded by their jobs. In the United States, the Environmental Protection Agency has published pollution control regulations for smelters. Victorian era In the history of the United Kingdom and the British Empire , the Victorian era was the reign of Queen Victoria , from 20 June 1837 until her death on 22 January 1901. Slightly different definitions are sometimes used. The era followed

6956-514: The population in 1800 to less than a third by 1901. However, 1890s studies suggested that almost 10% of the urban population lived in a state of desperation lacking the food necessary to maintain basic physical functions. Attitudes towards the poor were often unsympathetic and they were frequently blamed for their situation. In that spirit, the Poor Law Amendment Act 1834 had been deliberately designed to punish them and would remain

7050-617: The precision needed to create James Watt 's first steam engines. Samuel Van Leer was a well-known ironmaster and a United States Army officer during the American Revolutionary War . He started a military career with enthusiasm with his neighbor General Anthony Wayne in 1775. His furnace, Reading Furnace in Pennsylvania, supplied cannon and cannonballs for the Continental Army . Van Leer's furnace

7144-401: The roof of the furnace. The slag floats over the heavier matte and is removed and discarded or recycled. The sulfide matte is then sent to the converter . The precise details of the process vary from one furnace to another depending on the mineralogy of the ore body. While reverberatory furnaces produced slags containing very little copper, they were relatively energy inefficient and off-gassed

7238-405: The second half of the 19th century. Sociologist Christie Davies linked this change to attempts to morally educate the population, especially at Sunday schools . Contrary to popular belief, Victorian society understood that both men and women enjoyed copulation . Chastity was expected of women, whilst attitudes to male sexual behaviour were more relaxed. The development of police forces led to

7332-585: The second stage include fining in a finery forge . In the 13th century during the High Middle Ages the blast furnace was introduced by China who had been using it since as early as 200 b.c during the Qin dynasty . [1] Puddling was also introduced in the Industrial Revolution . Both processes are now obsolete, and wrought iron is now rarely made. Instead, mild steel is produced from

7426-590: The slightest degree with each other's work. Mr. Bolckow had the entire management of the financial department, while Mr. Vaughan as worthily controlled the practical work of the establishment." At its peak the firm was the largest steel producer in Britain, possibly in the world. Andrew Handyside (1805–1887) was born in Edinburgh and set up works in Derby where he made ornamental items, bridges and pillar boxes, many of which survive today. Samuel Richards (1769–1842)

7520-402: The spread of diseases and squalid living conditions in many places exacerbated the problem. The population of England, Scotland and Wales grew rapidly during the 19th century. Various factors are considered contributary to this, including a rising fertility rate (though it was falling by the end of the period), the lack of a catastrophic pandemic or famine in the island of Great Britain during

7614-455: The sulfides to oxides, which are more readily reduced to the metal. Roasting heats the ore in the presence of oxygen from air, oxidizing the ore and liberating the sulfur as sulfur dioxide gas. Smelting most prominently takes place in a blast furnace to produce pig iron , which is converted into steel . Plants for the electrolytic reduction of aluminium are referred to as aluminium smelters . Smelting involves more than just melting

7708-651: The temperature needed, so some propose that the first smelting of copper may have occurred in pottery kilns . (The development of copper smelting in the Andes, which is believed to have occurred independently of the Old World , may have occurred in the same way. ) The earliest current evidence of copper smelting, dating from between 5500 BC and 5000 BC, has been found in Pločnik and Belovode, Serbia. A mace head found in Turkey and dated to 5000 BC, once thought to be

7802-402: The war effort, and the evangelical movement's push for moral improvement. There is evidence that the expected standards of moral behaviour were reflected in action as well as rhetoric across all classes of society. For instance, an analysis suggested that less than 5% of working class couples cohabited before marriage. Historian Harold Perkin argued that the change in moral standards led by

7896-536: Was a center of colonial ironmaking and is associated with the introduction of the Franklin Stove , and the retreat of George Washington 's army following its defeat at the Battle of Brandywine , where they came for musket repairs. The location is listed as a temporary George Washington Headquarter . W Van Leer's children all joined the iron business as well. Lowthian Bell (1816–1904) was, like Abraham Darby,

7990-565: Was born in Philadelphia to William Richards, the manager of the Batsto Iron Works beginning in 1784. Samuel Richards was heavily involved with the early 19th century iron industry in southern New Jersey . His most notable enterprise was the management of the iron works at Atsion, New Jersey from 1824 until his death in 1842. He was also involved with Martha Furnace , and Weymouth Furnace. Smelting Smelting

8084-534: Was expanded again by the Second Reform Act in 1867. The Third Reform Act in 1884 introduced a general principle of one vote per household. All these acts and others simplified the electoral system and reduced corruption. Historian Bruce L Kinzer describes these reforms as putting the United Kingdom on the path towards becoming a democracy. The traditional aristocratic ruling class attempted to maintain as much influence as possible while gradually allowing

8178-485: Was generally then known as natural philosophy, but it took a while to catch on. Having been previously dominated by amateurs with a separate income, the Royal Society admitted only professionals from 1847 onwards. The British biologist Thomas Henry Huxley indicated in 1852 that it remained difficult to earn a living as a scientist alone. Scientific knowledge and debates such as that about Charles Darwin 's On

8272-448: Was given to social reform. Utilitarianism was another philosophy that saw itself as based on science rather than on morality, but also emphasised social progress. An alliance formed between these two ideological strands. The reformers emphasised causes such as improving the conditions of women and children, giving police reform priority over harsh punishment to prevent crime, religious equality, and political reform in order to establish

8366-473: Was in contemporaneous usage to describe the era. The era can also be understood in a more extensive sense—the 'long Victorian era'—as a period that possessed sensibilities and characteristics distinct from the periods adjacent to it, in which case it is sometimes dated to begin before Victoria's accession—typically from the passage of or agitation for (during the 1830s) the Reform Act 1832 , which introduced

8460-401: Was low, punishments severe, work was dangerous and disrupted children's development (often leaving them too tired to play even in their free time). Early labour could do lifelong harm; even in the 1960s and '70s, the elderly people of industrial towns were noted for their often unusually short stature, deformed physiques, and diseases associated with unhealthy working conditions. Reformers wanted

8554-1041: Was one of the largest point sources of mercury in North America in the 20th century. Even after smelter releases were drastically reduced, landscape re-emission continued to be a major regional source of mercury. Lakes will likely receive mercury contamination from the smelter for decades, from both re-emissions returning as rainwater and leaching of metals from the soil. Air pollutants generated by aluminium smelters include carbonyl sulfide , hydrogen fluoride , polycyclic compounds , lead, nickel , manganese , polychlorinated biphenyls , and mercury . Copper smelter emissions include arsenic, beryllium , cadmium , chromium , lead, manganese, and nickel. Lead smelters typically emit arsenic, antimony , cadmium and various lead compounds. Wastewater pollutants discharged by iron and steel mills includes gasification products such as benzene , naphthalene , anthracene , cyanide , ammonia , phenols and cresols , together with

8648-526: Was the material of choice for weapons such as swords , daggers , battle axes , and spear and arrow points, as well as protective gear such as shields , helmets , greaves (metal shin guards), and other body armor . Bronze also supplanted stone, wood, and organic materials in tools and household utensils—such as chisels , saws , adzes , nails , blade shears , knives , sewing needles and pins , jugs , cooking pots and cauldrons , mirrors , and horse harnesses . Tin and copper also contributed to

8742-468: Was the predominant power in the world. Victorian society valued a high standard of personal conduct across all sections of society. The emphasis on morality gave impetus to social reform but also placed restrictions on certain groups' liberty. Prosperity rose during the period, but debilitating undernutrition persisted. Literacy and childhood education became near universal in Great Britain for

8836-432: Was well developed, education and the arts were mediocre. Wage rates continued to improve in the later 19th century: real wages (after taking inflation into account) were 65 per cent higher in 1901 compared to 1871. Much of the money was saved, as the number of depositors in savings banks rose from 430,000 in 1831 to 5.2 million in 1887, and their deposits from £14 million to over £90 million. Children had always played

#993006