Smelting txheej txheem ntawm liab fused alumina

(1) Cov Khoom Siv Raw

Smelting ntawmPaj yeeb Fused aluminayog zoo ib yam li ntawm cov xim av txhuas oxide, siv alumina hmoov raws li cov khoom siv raw thiab ntxiv me me ntawm CR₂O₃Cov. Vim tias tus nqi ntawm CR₂O₃Ntxiv yog me me, nws yog thawj zaug sib xyaw ua ke ntawm qhov sib piv ntawm cov chromium oxide rau aluminina hmoov ntawm 1: 5, thiab tom qab ntawd ntxiv ib txhij nrog cov alumina hmoov.

(2) sib cais

Thaum lub sijhawm smelting fusing fused alumina, sodium peraluminate kuj tau cais nyob rau hauv lub nroog loj thiab nruab nrab ntawm cov hlau molten thaum lub sij hawm txias.

(3) chromium oxide poob

Lub chromium oxide ntxiv rau cov ntaub ntawv raw txawv txawv los ntawm cov khoom tiav, nrog kev siv tus nqi ntawm tsuas yog 40%-%%. Lub ntsiab ua rau cov chromium oxide poob rau hauv cov xim tawv xim dawb alumina smelting yog:

① Txo puas

Cov pa roj carbon - muaj cov khoom siv xws li cov pas nrig carbon monleads, thiab cov pa roj carbon monaigning,₂O₃Cov. Cov chromium txo los ua cov theem me me hauv cov muaj zog ntawm cov roj chromium atoms hauv cov system uas tsis yog ib feem ntawm cov qauv kev daws teeb meem.

② ya ya

Txij li cov chromium oxide tau ntxiv rau hauv cov hmoov hmoov, ya poob yog qhov tseem ceeb.

③ Qee cov ntaub ntawv chromium oxide cov roj ntsha, uas cais nrog sodium peraluminate, feeb rau sab qaum kev ntawm cov hlau loj. Thaum lub sij hawm crushing thiab kev faib tawm, cov khoom siv cais tawm yog pov tseg raws li substandard, accounting rau 10% -15% oxide ntxiv rau cov khoom siv raw.

(4) ntsuas los txo cov chromium oxide poob rau hauv cov xim tawv xim dawb alumina smelting:

a. Ntxiv chromium oxide nyob rau hauv nruab nrab thiab lig theem ntawm xim liab fused alumina smelting.

b. Chromium oxide yuav tsum tau ua ntej -} sib xyaw uayees nrog qee cov hmoov alumina thiab ntxiv rau lub cub tawg nrog rau alumina hmoov.

c. Xaiv cov kev ntxiv uas tsim nyog los txhim kho kev ua tiav ntawm chromium oxide nkag mus rau cov kev daws teeb meem. Piv txwv li, thaum smelting Brown aluminium oxide, ntxiv 1.5% tio₂Mus rau qhov cub hluav taws xob tuaj yeem nce cov roj chromium oxide nkag mus rau cov kua los ntawm 50% mus rau 80%.