Ferrochrome, koferrochromium(FeCr) wani nau'i ne na ferroalloy, wato, gami da chromium da baƙin ƙarfe, gabaɗaya yana ɗauke da 50 zuwa 70% chromium ta nauyi.

An samar da Ferrochrome ta hanyar wutar lantarki ta rage ragewar chromite.Yawancin abubuwan da ake samarwa a duniya ana samarwa ne a Afirka ta Kudu, Kazakhstan da Indiya, waɗanda ke da manyan albarkatun chromite na cikin gida.Ana samun karuwar kuɗi daga Rasha da China.Samar da ƙarfe, musamman na bakin karfe tare da abun ciki na chromium na 10 zuwa 20%, shine mafi girman mabukaci kuma babban aikace-aikacen ferrochrome.

Amfani

Fiye da 80% na duniyaferrochromeana amfani da shi wajen samar da bakin karfe.A cikin 2006, an samar da 28 Mt na bakin karfe.Bakin karfe ya dogara da chromium don bayyanarsa da juriya ga lalata.Matsakaicin abun ciki na chrome a cikin bakin karfe ya kai kusan.18%.Hakanan ana amfani dashi don ƙara chromium zuwa ƙarfe na carbon.FeCr daga Afirka ta Kudu, wanda aka fi sani da "cajin chrome" kuma ana samarwa daga Cr mai dauke da tama mai ƙarancin carbon, ana amfani da shi sosai wajen samar da bakin karfe.A madadin, babban carbon FeCr da aka samar daga tama mai daraja da aka samu a Kazakhstan (a tsakanin sauran wurare) an fi amfani dashi a aikace-aikace na ƙwararru kamar ƙarfe na injiniya inda babban rabon Cr / Fe da ƙananan matakan sauran abubuwa (sulfur, phosphorus, titanium da dai sauransu). .) suna da mahimmanci kuma samar da ƙãre karafa yana faruwa a cikin ƙananan murhun wutar lantarki idan aka kwatanta da manyan tanderun fashewa.

Production

Samar da Ferrochrome shine ainihin aikin rage carbothermic da ke faruwa a yanayin zafi mai yawa.Chromium tama (wani oxide na Cr da Fe) ana rage su da kwal da coke don samar da gariyar ƙarfe-chromium.Zafin wannan yanayin yana iya fitowa daga nau'i-nau'i da yawa, amma yawanci daga wutar lantarki da aka kafa tsakanin tukwici na na'urorin lantarki a cikin kasan tanderun da murhuwar tanderun.Wannan baka yana haifar da yanayin zafi na kusan 2,800 °C (5,070 °F).A cikin aikin narkar da wutar lantarki, ana amfani da wutar lantarki mai yawa, wanda hakan ya sa samar da kayayyaki ya yi tsada sosai a kasashen da ake tsadar wutar lantarki.

Buga kayan daga tanderun yana faruwa a lokaci-lokaci.Lokacin da isassun ferrochrome mai narkewa ya taru a cikin murhu, ramin famfo yana buɗewa kuma rafin narkakkar ƙarfe da ƙwanƙwasa yana gangarowa cikin rami zuwa cikin sanyi ko ladle.Ferrochrome yana ƙarfafa a cikin manyan simintin gyare-gyare waɗanda aka niƙa don siyarwa ko ƙarin sarrafawa.

An rarraba Ferrochrome gabaɗaya ta adadin carbon da chrome ɗin da ke cikinsa.Yawancin FeCr da aka samar shine "cajin chrome" daga Afirka ta Kudu, tare da babban carbon shine kashi na biyu mafi girma wanda ke biye da ƙananan sassa na ƙananan carbon da matsakaicin kayan carbon.