Keeb kwm luv luv ntawm Chromium Iron

Xyoo 1821, P. Berthier tau ua kom sov qhov sib xyaw ntawm charcoal, chromium oxide thiab hlau oxide nyob rau hauv lub crucible los tsim ferrochrome. Txoj kev no tau siv txog xyoo 1857 thaum EC Fremy smelted Tasmanian hlau thiab chromium ore nyob rau hauv lub cub tawg kom tau Tasmanian npua hlau uas muaj 7% mus rau 8 feem pua ​​Cr. Nyob nruab nrab ntawm 1870 thiab 1880, cov chromium hlau uas tsim los ntawm blast furnaces muaj 30 feem pua ​​​​rau 40 feem pua ​​​​Cr thiab 10 feem pua ​​​​mus rau 20 feem pua ​​​​CH Moissan tau ua haujlwm ntau ntawm smelting ferroalloys hauv hluav taws xob furnaces thiab luam tawm tsab ntawv tshaj tawm xyoo 1893 txog kev tsim cov pa roj carbon ntau. ferrochrome muaj 67 feem pua ​​​​rau 71 feem pua ​​​​Cr thiab 4 feem pua ​​​​mus rau 6 feem pua ​​​​C los ntawm kev txo cov chromium ore hauv hluav taws xob furnaces. Hloov moj tej tawg furnaces nrog hluav taws xob rauv rau smelting siab carbon ferrochromium yog ib tug tseem ceeb kev vam meej. Xyoo 1886, EG Odelstjerna piav txog Sweden kev tsim cov pa roj carbon ferrochromium uas muaj 70 feem pua ​​​​Cr siv lub tshuab hluav taws xob.
Los ntawm 1906 txog 1940, FM Becket thiab nws cov neeg koom tes tau ua cov txheej txheem ntawm kev tsim cov pa roj carbon monoxide ferrochromium los ntawm silicon txo chromite. Test thiab tsim nyob rau hauv 500kW ib-theem ob chav electrode hluav taws xob rauv (kub tso zis 400kg) rau 12000kW peb-theem hluav taws xob rauv (lub qhov cub tso zis 10t) kom tau raws li qhov xav tau ntawm stainless hlau ntau lawm. Nyob ib ncig ntawm 1920, Swedish Terelkhtan Ferroalloy Cog tau tsim cov txheej txheem peb-kauj ruam rau kev tsim cov pa roj carbon tsawg ferrochromium. Electrothermal method, tseem hu ua Swedish method. Xyoo 1939, R. Perrin tau txais daim ntawv pov thawj rau kev tsim cov pa roj carbon tsawg ferrochromium los ntawm reacting kua silicon ferrochromium alloy nrog chrome ore txiv qaub yaj. Feem ntau hu ua Coulomb method, tseem hu ua txoj kev sib pauv cua sov. Txoj kev no tau raug txhim kho tas li thiab tau dhau los ua txoj hauv kev tseem ceeb rau kev tsim cov roj carbon ferrochromium tsawg. Xyoo 1949, H. Erasmus tau txais patent rau kev tsim cov 0.01 feem pua ​​​​tsawg-carbon ferrochromium siv lub tshuab nqus tsev-state decarburization txoj kev. Nws tsim Sim Plex Ferrochrome ntawm Union Carbide's Ma rietta cog.