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Paul Héroult
Paul (Louis-Toussaint) Héroult (10 April 1863 – 9 May 1914) was a French scientist. He was the inventor of the aluminium electrolysis and developed the first successful commercial electric arc furnace. He lived in Thury-Harcourt, Normandy. Life and career Paul Héroult read Henri Sainte-Claire Deville's treatise on aluminium, when he was 15 years old. At that time, aluminium was as expensive as silver and was used mostly for luxury items and jewellery. Héroult wanted to make it cheaper. He succeeded in doing so when he discovered the electrolytic aluminium process in 1886. The same year, in the United States, Charles Martin Hall (1863–1914) was discovering the same process. Because of this, the process was called the Hall–Heroult process. Héroult's second most important contribution is the first commercially successful electric arc furnace (EAF) for steel in 1900. The Héroult furnace gradually replaced the giant smelters for the production of a variety of steels. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thury-Harcourt
Thury-Harcourt () is a former commune in the Calvados department in the Normandy region in northwestern France. On 1 January 2016, it was merged into the new commune of Thury-Harcourt-le-Hom. The town is south of Caen, in the Orne valley. It is part of Norman Switzerland, which attracts visitors for various sports and outdoor activities with its hilly terrain. History The original name is Thury, but the Marquis of Thury received a benefice from Henry d'Harcourt under the name of the Duke of Harcourt in 1709, requiring a change of name. The town was occupied by the forces of Nazi Germany in June 1940 after France's surrender ended the Battle of France. For four years the village lived under Nazi occupation as part of the German military administration in occupied France during World War II. Thury-Harcourt was liberated by British soldiers who were part of the 59th (Staffordshire) Infantry Division. The 59th (Staffordshire) Infantry Division fought their way into and through T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pechiney
Pechiney SA was a major aluminium conglomerate based in France. The company was acquired in 2003 by the Alcan Corporation, headquartered in Canada. In 2007, Alcan itself was taken over by mining giant Rio Tinto Alcan. Prior to its acquisition, Pechiney grew to be the world's 4th largest producer and developer of aluminium products, employing 34,000 people and operating 320 manufacturing and sales facilities in 50 countries at the time it was purchased by Alcan. The group operated in all facets of the aluminium industry from bauxite mining to the development of sophisticated applications of metal products in addition to international commodities trading and brokerage of the metal on the London Metal Exchange (LME). Pechiney gained worldwide recognition for its use of electrolysis technology, and was a leader in specialty packaging and aerospace applications. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1863 Births
Events January–March * January 1 – Abraham Lincoln signs the Emancipation Proclamation during the third year of the American Civil War, making the abolition of slavery in the Confederate states an official war goal. It proclaims the freedom of 3.1 million of the nation's four million slaves and immediately frees 50,000 of them, with the rest freed as Union armies advance. * January 2 – Lucius Tar Painting Master Company (''Teerfarbenfabrik Meirter Lucius''), predecessor of Hoechst, as a worldwide chemical manufacturing brand, founded in a suburb of Frankfurt am Main, Germany. * January 4 – The New Apostolic Church, a Christian and chiliastic church, is established in Hamburg, Germany. * January 7 – In the Swiss canton of Ticino, the village of Bedretto is partly destroyed and 29 killed, by an avalanche. * January 8 ** The Yorkshire County Cricket Club is founded at the Adelphi Hotel, in Sheffield, England. ** American Civil War – ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Remscheid - Werkzeugmuseum In 40 Ies
Remscheid () is a city in North Rhine-Westphalia, Germany. It is, after Wuppertal and Solingen, the third-largest municipality in Bergisches Land, being located on the northern edge of the region, on the south side of the Ruhr area. Remscheid had around 109,000 inhabitants in 2015. At the end of 2019 it had 113,703 inhabitants. Geography Remscheid comprises four boroughs, ''Alt-Remscheid'', ''Remscheid-Süd'', ''Lennep'', and Lüttringhausen. Its highest point is the Brodtberg (378 m). History Remscheid was founded in the 12th century, but remained a small village until the 19th century. Early spellings for the city included ''Remissgeid'' (1217), ''Rymscheyd'' (1351), ''Reymscheyd'' (1487) and ''Rembscheid'' (1639). The economic growth of the entire Rhine-Ruhr region led to an increase of the population of Remscheid. Mechanical engineering and toolmaking were the main industries practised within the town. This is carried on today with the Hazet tool company which has two fact ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Remscheid - Werkzeugmuseum In - Lichtbogenofen 02 Ies
Remscheid () is a city in North Rhine-Westphalia, Germany. It is, after Wuppertal and Solingen, the third-largest municipality in Bergisches Land, being located on the northern edge of the region, on the south side of the Ruhr area. Remscheid had around 109,000 inhabitants in 2015. At the end of 2019 it had 113,703 inhabitants. Geography Remscheid comprises four boroughs, ''Alt-Remscheid'', ''Remscheid-Süd'', ''Lennep'', and Lüttringhausen. Its highest point is the Brodtberg (378 m). History Remscheid was founded in the 12th century, but remained a small village until the 19th century. Early spellings for the city included ''Remissgeid'' (1217), ''Rymscheyd'' (1351), ''Reymscheyd'' (1487) and ''Rembscheid'' (1639). The economic growth of the entire Rhine-Ruhr region led to an increase of the population of Remscheid. Mechanical engineering and toolmaking were the main industries practised within the town. This is carried on today with the Hazet tool company which has two fact ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Aluminium
Aluminium (or aluminum) metal is very rare in native form, and the process to refine it from ores is complex, so for most of human history it was unknown. However, the compound alum has been known since the 5th century BCE and was used extensively by the ancients for dyeing. During the Middle Ages, its use for dyeing made it a commodity of international commerce. Renaissance scientists believed that alum was a salt of a new earth; during the Age of Enlightenment, it was established that this earth, alumina, was an oxide of a new metal. Discovery of this metal was announced in 1825 by Danish physicist Hans Christian Ørsted, whose work was extended by German chemist Friedrich Wöhler. Aluminium was difficult to refine and thus uncommon in actual usage. Soon after its discovery, the price of aluminium exceeded that of gold. It was reduced only after the initiation of the first industrial production by French chemist Henri Étienne Sainte-Claire Deville in 1856. In 1878, metallurg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steelworks
A steel mill or steelworks is an industrial plant for the manufacture of steel. It may be an integrated steel works carrying out all steps of steelmaking from smelting iron ore to rolled product, but may also be a plant where steel semi-finished casting products are made from molten pig iron or from scrap. History Since the invention of the Bessemer process, steel mills have replaced ironworks, based on puddling or fining methods. New ways to produce steel appeared later: from scrap melted in an electric arc furnace and, more recently, from direct reduced iron processes. In the late 19th and early 20th centuries the world's largest steel mill was the Barrow Hematite Steel Company steelworks located in Barrow-in-Furness, United Kingdom. Today, the world's largest steel mill is in Gwangyang, South Korea. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steel Mill
A steel mill or steelworks is an industrial plant for the manufacture of steel. It may be an integrated steel works carrying out all steps of steelmaking from smelting iron ore to rolled product, but may also be a plant where steel semi-finished casting products are made from molten pig iron or from scrap. History Since the invention of the Bessemer process, steel mills have replaced ironworks, based on puddling or fining methods. New ways to produce steel appeared later: from scrap melted in an electric arc furnace and, more recently, from direct reduced iron processes. In the late 19th and early 20th centuries the world's largest steel mill was the Barrow Hematite Steel Company steelworks located in Barrow-in-Furness, United Kingdom. Today, the world's largest steel mill is in Gwangyang, South Korea. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blast Furnace
A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally pig iron, but also others such as lead or copper. ''Blast'' refers to the combustion air being "forced" or supplied above atmospheric pressure. In a blast furnace, fuel ( coke), ores, and flux (limestone) are continuously supplied through the top of the furnace, while a hot blast of air (sometimes with oxygen enrichment) is blown into the lower section of the furnace through a series of pipes called tuyeres, so that the chemical reactions take place throughout the furnace as the material falls downward. The end products are usually molten metal and slag phases tapped from the bottom, and waste gases (flue gas) exiting from the top of the furnace. The downward flow of the ore along with the flux in contact with an upflow of hot, carbon monoxide-rich combustion gases is a countercurrent exchange and chemical reaction process. In contrast, air furnaces (such as reverbera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crucible Steel
Crucible steel is steel made by melting pig iron (cast iron), iron, and sometimes steel, often along with sand, glass, ashes, and other flux (metallurgy), fluxes, in a crucible. In ancient times steel and iron were impossible to melt using charcoal or coal fires, which could not produce temperatures high enough. However, pig iron, having a higher carbon content and thus a lower melting point, could be melted, and by soaking wrought iron or steel in the liquid pig-iron for a long time, the carbon content of the pig iron could be reduced as it slowly diffusion, diffused into the iron, turning both into steel. Crucible steel of this type was produced in South and Central Asia during the Middle Ages, medieval era. This generally produced a very hard steel, but also a composite steel that was inhomogeneous, consisting of a very high-carbon steel (formerly the pig-iron) and a lower-carbon steel (formerly the wrought iron). This often resulted in an intricate pattern when the steel was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steel Industry
Steel is an alloy made up of iron with added carbon to improve its strength and fracture resistance compared to other forms of iron. Many other elements may be present or added. Stainless steels that are corrosion- and oxidation-resistant typically need an additional 11% chromium. Because of its high tensile strength and low cost, steel is used in buildings, infrastructure, tools, ships, trains, cars, machines, electrical appliances, weapons, and rockets. Iron is the base metal of steel. Depending on the temperature, it can take two crystalline forms (allotropic forms): body-centred cubic and face-centred cubic. The interaction of the allotropes of iron with the alloying elements, primarily carbon, gives steel and cast iron their range of unique properties. In pure iron, the crystal structure has relatively little resistance to the iron atoms slipping past one another, and so pure iron is quite ductile, or soft and easily formed. In steel, small amounts of carbon, other ele ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open Hearth Furnace
An open-hearth furnace or open hearth furnace is any of several kinds of industrial furnace in which excess carbon and other impurities are burnt out of pig iron to produce steel. Because steel is difficult to manufacture owing to its high melting point, normal fuels and furnaces were insufficient for mass production of steel, and the open-hearth type of furnace was one of several technologies developed in the nineteenth century to overcome this difficulty. Compared with the Bessemer process, which it displaced, its main advantages were that it did not expose the steel to excessive nitrogen (which would cause the steel to become brittle), was easier to control, and permitted the melting and refining of large amounts of scrap iron and steel. The open-hearth furnace was first developed by German-born engineer Carl Wilhelm Siemens. In 1865, the French engineer Pierre-Émile Martin took out a license from Siemens and first applied his regenerative furnace for making steel. Their pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
