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High Carbon Ferrochrome Technology

Babban carbonferrochromeyana daya daga cikin na'urorin ferroalloys na yau da kullun da ake samarwa kuma kusan ana amfani dashi na musamman wajen samar da bakin karfe da manyan karafa na chromium.Ana samarwa da farko a cikin ƙasashen da ke da wadataccen ma'adinin chromite.Wutar lantarki mai arha da rahusa suma suna ba da gudummawa ga yuwuwar babban ferrochrome na carbon.Mafi yawan fasahar samarwa da ake amfani da ita ita ce narkewar baka a cikin tanderun AC, kodayake buɗaɗɗen baka a cikin tanderun DC yana ƙara zama gama gari.Hanyar fasaha ta ci gaba wacce ta haɗa da matakin riga-kafi ana amfani da ita ne kawai a ma'auni mai mahimmanci ta hanyar samarwa ɗaya.Hanyoyin samarwa sun zama mafi ƙarfi da ingantaccen ƙarfe ta hanyar amfani da matakai na ci gaba kamar prereduction, preheating, agglomeration na tama, da amfani da iskar gas na CO.Tsirrai da aka girka kwanan nan suna nuna haɗarin da za a iya sarrafa su dangane da gurɓacewar muhalli da lafiyar sana'a.

Sama da kashi 80% na abin da ake fitarwa na ferrochrome a duniya ana amfani da shi wajen samar da bakin karfe.Bakin karfe ya dogara da chromium don bayyanarsa da juriya ga lalata.Matsakaicin abun ciki na chromium a cikin bakin karfe shine 18%.Hakanan ana amfani da FeCr lokacin da ake so don ƙara chromium zuwa ƙarfe na carbon.FeCr daga Afirka ta Kudu da aka fi sani da "cajin chrome" kuma ana samar da shi daga ƙananan ƙarfe na chrome an fi amfani da shi wajen samar da bakin karfe.FeCr mai-carbon da aka samar daga tama mai daraja da aka samu a Kazakhstan (a tsakanin sauran wurare) an fi amfani da shi a aikace-aikace na ƙwararru kamar ƙarfe na injiniya inda rabon Cr zuwa Fe yana da mahimmanci.

Samar da Ferrochrome shine ainihin aikin rage zafin jiki mai zafi.Chrome ore (wani oxide na chromium da baƙin ƙarfe) an rage ta coke (da kwal) don samar da ƙarfe-chromium-carbon gami.Ana ba da zafi don aiwatarwa yawanci daga baka na lantarki da aka kafa tsakanin tukwici na na'urorin lantarki a cikin kasan tanderun da murhuwar murhu a cikin manyan murhun wuta na silindi da aka sani da “submerged arc furnaces.”Kamar yadda sunan ke nunawa uku carbon electrodes na tanderun suna nutsewa a cikin wani gado na musamman mai ƙarfi da wasu cakuda ruwa da aka yi da ƙaƙƙarfan carbon (coke da/ko coal), albarkatun ƙasa mai ƙarfi (kare da fluxes) da kuma ruwa FeCr gami da narkakken slag ɗigon ruwa waɗanda ake samarwa.A cikin aikin narka, ana amfani da wutar lantarki mai yawa.Buga kayan daga tanderun yana faruwa a lokaci-lokaci.Lokacin da isassun ferrochrome mai narkewa ya taru a cikin murhu na murhu, za a buɗe ramin famfo kuma rafin narkakkar ƙarfe da ƙoramar da ke gangarowa daga cikin ramin zuwa cikin sanyi ko ladle.Ferrochrome yana ƙarfafa a cikin manyan simintin gyare-gyare, waɗanda aka niƙa don siyarwa ko ƙarin sarrafawa.


Lokacin aikawa: Juni-17-2021