I-Ferrochrome, okanyei-ferrochromium(FeCr) luhlobo lwe-ferroalloy, oko kukuthi, i-alloy ye-chromium kunye nentsimbi, ngokubanzi iqulethe i-50 ukuya kwi-70% ye-chromium ngesisindo.

I-Ferrochrome iveliswa nge-arc yombane yokunciphisa i-chromite.Uninzi lwemveliso yehlabathi iveliswa eMzantsi Afrika, eKazakhstan naseIndiya, ezinemithombo emikhulu yechromite yasekhaya.Izixa ezinyukayo zivela eRashiya nase China.Ukuveliswa kwentsimbi, ngakumbi insimbi engenasici kunye nomxholo we-chromium we-10 ukuya kwi-20%, ngumthengi omkhulu kunye nesicelo esiphambili se-ferrochrome.

Ukusetyenziswa

Ngaphezu kwama-80% ehlabathii-ferrochromeisetyenziselwa ukuveliswa kwentsimbi engatyiwa.Kwi-2006, i-28 Mt yensimbi engenasici yaveliswa.Intsimbi engenastainless ixhomekeke kwichromium ngokubonakala kwayo kunye nokuchasa ukubola.Umndilili womxholo we-chrome kwintsimbi engatyiwayo ngumlinganiselo.18%.Ikwasetyenziselwa ukongeza i-chromium kwintsimbi ye-carbon.I-FeCr evela eMzantsi Afrika, eyaziwa ngokuba yi- "charge chrome" kwaye iveliswe kwi-Cr equlethe i-ore enomxholo wekhabhoni ephantsi, isetyenziswa kakhulu kwimveliso yensimbi engenasici.Ngenye indlela, i-carbon ephezulu ye-FeCr eveliswe kwi-ore ye-high-grade ore efunyenwe e-Kazakhstan (phakathi kwezinye iindawo) isetyenziswa ngokuqhelekileyo kwizicelo zeengcali ezifana neentsimbi zobunjineli apho umlinganiselo ophezulu we-Cr / Fe kunye namanqanaba amancinci kwezinye izinto (isulfure, i-phosphorus, i-titanium njl. zibalulekile kwaye ukuveliswa kweentsimbi ezigqityiweyo kwenzeka kwiindawo ezincinci zombane ze-arc xa kuthelekiswa neziko lokuqhushumba okukhulu.

Imveliso

Ukuveliswa kwe-Ferrochrome ngokuyisiseko ngumsebenzi wokunciphisa i-carbothermic owenzeka kumaqondo aphezulu.I-Chromium ore (i-oxide ye-Cr kunye ne-Fe) iyancipha ngamalahle kunye ne-coke ukwenza i-iron-chromium alloy.Ubushushu bale mpendulo bunokuvela kwiintlobo ezininzi, kodwa ngokuqhelekileyo ukusuka kwi-arc yombane eyenziwe phakathi kweengcebiso zee-electrode ezisezantsi kwiziko kunye neziko lomlilo.Le arc idala amaqondo obushushu amalunga ne-2,800 °C (5,070 °F).Kwinkqubo yokunyibilikiswa, izixa ezikhulu zombane ziyasetyenziswa, nto leyo eyenza ukuba imveliso ibize kakhulu kumazwe apho iindleko zombane ziphezulu.

Ukubethelwa kwezinto ezivela kwisithando somlilo kwenzeka ngokukhawuleza.Xa i-ferrochrome eyaneleyo enyibilikisiweyo iqokelele kwiziko lomlilo, umngxuma wempompo uyagrunjwa kwaye umlambo wesinyithi otyhidiweyo kunye ne-slag ehla emkhombeni ukuya kwindawo ebandayo okanye i-ladle.I-Ferrochrome iyaqina kwiicastings ezinkulu ezityunyuziweyo ukuze zithengiswe okanye ziqhubekele phambili.

I-Ferrochrome ihlelwa ngokubanzi ngobungakanani bekhabhoni kunye ne-chrome equlethwe kuyo.Uninzi lwe-FeCr eveliswayo yi "charge chrome" evela eMzantsi Afrika, kunye nekhabhoni ephezulu ibe licandelo lesibini ngobukhulu lilandelwa ngamacandelo amancinci ekhabhoni ephantsi kunye ne-intermediate carbon material.