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1 технический цинк
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2 технический цинк
Русско-английский политехнический словарь > технический цинк
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3 cynk techniczny
• commercial zinc -
4 цинк
* * *цинк м.
zinc, Znгранули́рованный цинк — mossy [granulated] zincлистово́й цинк — sheet zincрафини́рованный цинк — high-grade zincтехни́ческий цинк — commercial zinc -
5 технический цинк
commercial zinc метал.Русско-английский научно-технический словарь Масловского > технический цинк
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6 техническая окись цинка
Metallurgy: commercial zinc oxideУниверсальный русско-английский словарь > техническая окись цинка
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7 технический цинк
1) General subject: spelter (в чушках или плитках)2) Metallurgy: commercial zinc -
8 Hüttenzink
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9 råsink
subst. commercial zinc, spelter -
10 Dony, Jean-Jacques Daniel
SUBJECT AREA: Metallurgy[br]b. 24 February 1759 Liège, Belgiumd. 6 November 1819 Liège, Belgium[br]Belgian inventor of the horizontal retort process of zinc manufacture.[br]Dony trained initially for the Church, and it is not known how he became interested in the production of zinc. Liège, however, was close to extensive deposits of the zinc ore calamine, and brass had been made since Roman times in the region between Liège and Aix-la-Chapelle (now Aachen). William Champion's technique of brass manufacture was known there and was considered to be too complicated and expensive for the routine manufacture of brass. Dony may have learned about earlier processes of manufacturing zinc on the European continent from his friend Professor Villette of Liège University, and about English methods from Henri Delloye, a friend of both Villette and Dony and who visited Birmingham and Bristol on their behalf to study zinc smelting processes and brass manufacture at first hand. By 21 March 1805 Dony had succeeded in extracting zinc from calamine and casting it in ingots. On the basis of this success he applied to the French Republican administration for assistance and in 1806 was assigned by Napoleon the sole mining rights to the calamine deposits of the Vieille Montagne, or Altenberg, near Moresnet, five miles (8 km) from Aachen. With these rights went the obligation of developing an industrially viable method of zinc refining. In 1807 he constructed a small factory at Isle and there, after much effort, he perfected his celebrated horizontal retort process, the "Liège Method". After July 1809 zinc was being produced in abundance, and in January 1810 Dony was granted an Imperial Patent giving him a monopoly of zinc manufacture for fifteen years. He erected a rolling mill at Saint-Léonard and attempted to persuade the Minister of Marine to use zinc sheets rather than copper for the protection of ships. Between 1809 and 1810 Dony reduced the price of zinc in Liège from 8.60 to 2.60 francs per kilo. However, after 1813 he began to encounter financial problems and in 1818 he surrendered his commercial interests to his partner Dominique Mosselman (d. 1837). The horizontal retort process soon rendered obsolete that of William Champion, and variants of the Liège Method were rapidly evolved in Germany, Britain and the USA.[br]Further ReadingA.Dony, 1941, A Propos de l'industrie belge du zinc au début du XIXe siècle, Brussels. L.Boscheron, "The zinc industry of the Liège District", Journal of the Institution ofMetals 36 (2):21–6.H.Delloye, 1810, Recherches sur la calamine, le zinc et les emplois, Liège: Dauvrain. 1836, Bibliographie Liégeoise.ASDBiographical history of technology > Dony, Jean-Jacques Daniel
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11 Cowper-Coles, Sherard Osborn
SUBJECT AREA: Metallurgy[br]b. 8 October 1866 East Harting, Sussex, Englandd. 9 September 1936[br]English inventor of the sherardizing process for metal protection.[br]He was the son of Captain Cowper- Coles, Royal Navy, the inventor of the swivelling turret for naval guns. He inherited his father's inventive talents and investigated a variety of inventions in his workshop at his home at Sunbury-on-Thames, assisted by a number of scientific workers. He had been educated by governesses, but he lacked a sound scientific background. His inventions, rarely systematically pursued, ranged from electrolytic processes for making copper sheets and parabolic reflectors to a process for inlaying and decorating metallic surfaces. Overall, however, he is best known for the invention of "sherardizing", the process for producing a rustproof coating of zinc on small metallic articles. The discovery came by chance, when he was annealing iron and steel packed in zinc dust to exclude air. The metal was found to be coated with a thin layer of zinc with some surface penetration. The first patent for the process was obtained in 1900, and later the American rights were sold, with a company being formed in 1908 to control them. A small plant was set up in Chelsea, London, to develop the process to the point where it could be carried out on a commercial scale in a plant in Willesden. Sherardizing has not been a general protective finish, but is restricted to articles such as nuts and bolts which are then painted or finished. The process was still in use in 1977, operated by the Zinc Alloy Company (London) Ltd.[br]Further ReadingC.A.Smith, 1978, "Sherard Cowper-Coles: a review of the inception of sherardizing", Transactions of the Newcomen Society 49:1–4.LRDBiographical history of technology > Cowper-Coles, Sherard Osborn
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12 Daniell, John Frederick
SUBJECT AREA: Electricity[br]b. 12 March 1790 London, Englandd. 13 March 1845 London, England[br]English chemist, inventor of the Daniell primary electric cell.[br]With an early bias towards science, Daniell's interest in chemistry was formed when he joined a relative's sugar-refining business. He formed a lifelong friendship with W.T.Brande, Professor of Chemistry at the Royal Institution, and together they revived the journal of the Royal Institution, to which Daniell submitted many of his early papers on chemical subjects. He made many contributions to the science of meteorology and in 1820 invented a hydrometer, which became widely used and gave precision to the measurement of atmospheric moisture. As one of the originators of the Society for Promoting Useful Knowledge, Daniell edited several of its early publications. His work on crystallization established his reputation as a chemist and in 1831 he was appointed the first Professor of Chemistry at King's College, London, where he was largely responsible for establishing its department of applied science. He was also involved in the Chemical Society of London and served as its Vice-President. At King's College he began the research into current electricity with which his name is particularly associated. His investigations into the zinc-copper cell revealed that the rapid decline in power was due to hydrogen gas being liberated at the positive electrode. Daniell's cell, invented in 1836, employed a zinc electrode in dilute sulphuric acid and a copper electrode in a solution of copper sulphate, the electrodes being separated by a porous membrane, typically an unglazed earthenware pot. He was awarded the Copley Medal of the Royal Society for his invention which avoided the "polarization" of the simple cell and provided a further source of current for electrical research and for commercial applications such as electroplating. Although the high internal resistance of the Daniell cell limited the current and the potential was only 1.1 volts, the voltage was so unchanging that it was used as a reference standard until the 1870s, when J. Lattimer Clark devised an even more stable cell.[br]Principal Honours and DistinctionsFRS 1814. Royal Society Rumford Medal 1832, Copley Medal 1837, Royal Medal 1842.Bibliography1836, "On voltaic combinations", Phil. Transactions of the Royal Society 126:107–24, 125–9 (the first report of his experiments).Listings of his scientific papers can be found in Catalogue of Scientific Papers, 1868, Vol. II, London: Royal Society.Further ReadingObituary, 1845, Proceedings of the Royal Society, 5:577–80.J.R.Partington, 1964, History of Chemistry, Vol. IV, London (describes the Daniell cell and his electrical researches).B.Bowers, 1982, History of Electric Light and Power, London.GWBiographical history of technology > Daniell, John Frederick
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13 Leclanché, Georges
SUBJECT AREA: Electricity[br]b. 1839 Paris, Franced. 14 September 1882 Paris, France[br]French chemist and inventor of the primary cell named after him, from which the electrochemical principles of the modern dry cell have been developed.[br]Leclanché was sent to England for his early education. Returning to France, he entered the Central School of Arts and Manufacture, from which he graduated as a chemical engineer in 1860. He spent some years with a railway company in setting up an electrical timing system, and this work led him to electrochemical research. Driven by political pressure into exile, he set up a small laboratory in Brussels to continue the studies of the behaviour of voltaic cells he had started in France. Many workers directed their efforts to constructing a cell with a single electrolyte and a solid insoluble depo-larizer, but it was Leclanché who produced, in 1866, the prototype of a battery that was rugged, cheap and contained no highly corro-sive liquid. With electrodes of carbon and zinc and a solution of ammonium chloride, polarization was prevented by surrounding the positive electrode with manganese dioxide. The Leclanché cell was adopted by the Belgian Government Telegraph Service in 1868 and rapidly came into general use wherever an intermittent current was needed; for example, in telegraph and later in telephone circuits. Carl Gassner in 1888 pioneered successful dry cells based on the Leclanché system, with the zinc anode serving as the container, and c. 1890 commercial production of such cells began.[br]Bibliography10 October 1866, British patent no. 2,623 (Leclanché cell).1868, "Pile au peroxyde de manganèse à seul liquide", Les Mondes 16:532–3 (describes the Leclanché cell).Further ReadingM.Barak, 1966, "Georges Leclanché (1939–1882)", IEE Electronics and Power 12:184– 91 (a detailed account).N.C.Cahoon and G.W.Heise (eds), 1976, The Primary Battery, Vol. II, New York, pp. 1–147 (describes subsequent developments), GW -
14 zinki
[Swahili Word] zinki[English Word] zinc[Part of Speech] noun[Class] 9[Dialect] recent[English Definition] a bluish white crystalline metallic element of low to intermediate hardness that is ductile when pure but in the commercial form is brittle at ordinary temperatures and becomes ductile on slight heating, occurs abundantly in minerals, is an essential micronutrient for both plants and animals, and is used especially as a protective coating for iron and steel (identified 1651)[Terminology] chemistry------------------------------------------------------------ -
15 MacArthur, John Stewart
[br]b. December 1856 Hutchesontown, Glasgow, Scotlandd. 16 March 1920 Pollokshields, Glasgow, Scotland[br]Scottish industrial chemist who introduced the "cyanide process" for the commercial extraction of gold from its ores.[br]MacArthur served his apprenticeship in the laboratory of Tennant's Tharsis Sulphur and Copper Company in Glasgow. In 1886 he was appointed Technical Manager of the Tennant-run Cassel Gold Extracting Company. By 1888 he was advocating a treatment scheme in which gold was dissolved from crushed rock by a dilute solution of alkali cyanide and then precipitated onto finely divided zinc. During the next few years, with several assistants, he was extremely active in promoting the new gold-extraction technique in various parts of the world. In 1894 significant sums in royalty payments were received, but by 1897 the patents had been successfully contested; henceforth the Cassel Company concentrated on the production and marketing of the essential sodium cyanide reagent.MacArthur was Managing Director of the Cassel Company from 1892 to 1897; he resigned as a director in December 1905. In 1907 he created the Antimony Recovery Syndicate, and in 1911 he set up a small plant at Runcorn, Cheshire, to produce radium salts. In 1915 this radium-extraction activity was transferred to Balloch, south of Loch Lomond, where it was used until some years after his death.[br]Principal Honours and DistinctionsInstitution of Mining and Metallurgy Gold Medal 1902.Bibliography10 August 1888, jointly with R.W.Forrest and W.Forrest, British patent no. 14,174. 13 July 1889, jointly with R.W.Forrest and W. Forrest, British patent no. 10,223. 1905, "Gold extraction by cyanide: a retrospect", Journal of the Society of ChemicalIndustry (15 April):311–15.Further ReadingD.I.Harvie, 1989, "John Stewart MacArthur: pioneer gold and radium refiner", Endeavour (NS) 13(4):179–84 (draws on family documents not previously published).JKABiographical history of technology > MacArthur, John Stewart
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