Qhov yooj yim kev nkag siab ntawmferrochrome:

Nruab nrab, qis thiab micro carbonferrochromefeem ntau yog ua los ntawm silicochrome alloy, chromite thiab txiv qaub li raw cov ntaub ntawv.Nws yog refined thiab desilicated los ntawm hluav taws xob rauv ntawm 1500 ~ 6000 kV A thiab ua los ntawm high yooj yim cub slag (CaO / SiO2 yog 1.6 ~ 1.8).Low thiabmicro carbon ferrochromeNws kuj yog tsim los ntawm kev sib xyaw kub ntawm cov nplai loj.Ob lub tshuab hluav taws xob siv rau hauv ntau lawm, ib qho rau smelting silicon chrome alloy thiab lwm yam rau melting slag muaj li ntawm chrome ore thiab txiv qaub.Cov tshuaj tiv thaiv refining muab faib ua ob theem hauv ob lub tso tsheb hlau luam. : (1) Tom qab cov slag los ntawm slag rauv yog txhaj rau hauv thawj lub tank, silicon chromium alloy uas tau pib desiliconized yog ntxiv rau hauv lwm lub tank.Vim tias qhov ntau tshaj ntawm oxidizing tus neeg sawv cev hauv cov slag thiab cov desiliconization txaus, micro-carbon ferrochrome muaj tsawg dua 0.8% silicon thiab qis li 0.02% carbon tuaj yeem tau.② Tom qab cov slag (muaj txog 15% Cr2O3) tom qab cov tshuaj tiv thaiv nyob rau hauv thawj lub tank yog tsiv mus rau lub tank thib ob, silicon chromium alloy (muaj 45% silicon) npaj nyob rau hauv silicon chromium hluav taws xob rauv yog rhuab mus rau hauv lub slag.Tom qab cov tshuaj tiv thaiv, silicon chromium alloy (muaj li ntawm 25% silicon) uas yog thawj zaug desilicated tau txais thiab ntxiv rau hauv thawj lub tank rau ntxiv desilication.Cov slag uas muaj tsawg dua 2 ~ 3% Cr2O3 tuaj yeem muab pov tseg.

Qhov nruab nrab thiab qis carbon ferrochrome yog refined los ntawm oxygen tshuab txoj kev.Cov kua roj carbon ferrochrome yog siv los ua cov khoom siv raw.Ib qho me me ntawm cov txiv qaub thiab fluorite yog ntxiv rau lub pas dej molten kom ua slag thaum lub tshuab, thiab silicon chromium alloy los yog ferrosilicate yog ntxiv ua ntej hlau extraction kom rov qab chromium nyob rau hauv slag.Qhov tshuab ntawm micro - carbon ferrochrome yog ua tau nyob rau hauv ib tug tej yam nqus tsev vacuum. .

Nqus khoom-state decarburization txheej txheem refined, nrog zoo sib tsoo ntawm siab carbon ferrochrome li raw khoom, zoo sib tsoo ntawm high carbon ferrochrome, ib feem ntawm oxidizing roasting li oxidant thiab dej iav los yog lwm yam nplaum, siab pob, tom qab tsis tshua muaj kub kom qhuav, tsheb hom lub tshuab nqus tsev rauv, lub tshuab nqus tsev kawm ntawv yog 0.5 ~ 10 hli hg, kub ntawm 1300 ~ 1400 ℃ cua sov txo qis dua 35 ~ 50 teev, Microcarbon ferrochrome muaj tsawg dua 0.03% carbon lossis txawm tias tsawg dua 0.01% carbon tau.

Kev kuaj xyuas ntau yam: thaum lub batch tsawg dua 10 tons, tsis pub tsawg dua 10 cov qauv yuav tsum tau randomly coj los ntawm ntau qhov chaw; Yog hais tias lub batch yog ntau tshaj 10 tons, tsawg tshaj li 30 tons, tsis muaj tsawg tshaj li 20 cov qauv yuav tsum tau random coj los ntawm qhov sib txawv; Thaum lub batch ntau tshaj 30 tons, tsis pub tsawg tshaj 30 cov qauv yuav tsum tau randomly coj los ntawm ntau qhov chaw.Txhua tus qauv hnyav yuav tsum yog kwv yees li sib npaug, nws lumpiness tsis tsawg tshaj li 20 * 20mm.Cov sampling tus nqi yuav tsum tsis txhob yuav tsawg. tshaj 0.03% ntawm qhov ntau.Tag nrho cov qauv coj yuav tsum tau tawg kom tsawg dua 10 hli thiab quartered rau 1-2kg.Tom qab sib tov, lawv yuav tsum tau muab faib ua ob qhov sib npaug, ib qho rau kev npaj ua qauv thiab lwm yam rau khaws cia.

Nyob rau hauv ib txwm muaj xwm txheej, nws yog los xyuas cov ntsiab lus ntawm chromium, ua raws li cov ntsiab lus ntawm carbon assay, chromium cov ntsiab lus nyob rau hauv ib txwm muaj teeb meem yuav tsum nyob rau hauv 60% ± 0.5.