Qhov me me particle loj yog, qhov siab dua qhov whiteness yog.Lub coarser lub particle loj yog, qhov nyuaj dua nws yog kom tshem tawm cov pa roj carbon, tshwj xeeb tshaj yog cov pa roj carbon nyob rau hauv lub particle yog tsis yooj yim rau volatilize, uas cuam tshuam rau lub whiteness ntawm cov khoom calcined.Cov khoom siv raw yog qhov zoo, thaj chaw saum npoo yog loj, cov pa roj carbon yooj yim tshem tawm, cov pa roj carbon monoxide yooj yim rau volatilize, thiab cov xim dawb ntawm cov khoom calcined yog siab.

Nyob rau hauv tus txheej txheem ntawm calcining cov khoom whiteness, kaolin muaj ib tug qeeb zog sib piv nrog rau qhov nce ntawm calcination kub.Piv nrog rau 900 ℃, 850 ℃ kaolin calcination, kaolin cov khoom tsis tsuas yog tshem tawm cov dej siv lead ua, nce pore loj, tab sis kuj tswj cov flaky, siab whiteness, belongs rau calcination kub, txo nqi peev thiab ib puag ncig muaj kuab paug, yog li 850 ℃ yog qhov zoo tshaj plaws calcination kub.

Lub whiteness ntawm cov khoom nce nrog lub sij hawm qhov kub thiab txias, tab sis tus qauv yog qeeb.Thaum qhov kub thiab txias dhau lawm, cov pa roj carbon hauv kaolin tsis yooj yim tshem tawm.Tom qab ntau tshaj li 4 teev ntawm qhov kub thiab txias, qhov degree ntawm decarburization thiab lub cev qhuav dej ntawm cov khoom yog me me, yog li cov khoom dawb yog txhim kho, tab sis qhov kev txhim kho me me heev.Txhawm rau txhim kho cov thermal efficiency, qhov ntsuas kub tsis tu ncua ntawm cov khoom calcined yog tsim nyog rau 4 teev

Los ntawm kev siv cov calcining additives sib txawv, cov txheej txheem ntau lawm yog yooj yim, tus nqi raug txo, thiab whiteness ntawm calcined khoom yog zoo heev.Ntawm lawv, sodium chloride yog cov khoom siv zoo tshaj plaws.Kev taw qhia ntawm urea ua tus neeg sawv cev intercalation kuj ua rau kom cov xim dawb ntawm calcined kaolin

Kev tswj ntawm calcination huab cua muaj kev cuam tshuam zoo rau cov xim dawb thiab daj ntawm cov khoom calcined.Txhawm rau ua kom tau raws li qhov xav tau ntawm cov pa roj carbon tshem tawm ntawm cov thee series kaolin, calcination nyob rau hauv oxidizing cua ua rau cov hlau oxide tsawg thiab tus nqi siab, uas yuav ua rau inevitably ua rau kom cov pa roj carbon tshem tawm thiab yellowness ntawm cov khoom kaolin.Yog li ntawd, calcination ntawm 850 ℃ hauv qhov kub thiab txias thiab txo qhov cua tuaj yeem txo cov hlau tsis tshua muaj hlau thiab cov hlau siab, tswj cov calcination cua, txo cov xim dawb thiab txhim kho yellowness ntawm cov khoom.