High alumina refractory cibyog ib hom khoom siv refractory, thiab cov khoom tseem ceeb ntawm hom refractory cib no yog Al2O3.
Yog tias Al2O3 cov ntsiab lus siab dua 90%, nws hu ua corundum cib. Vim muaj kev sib txawv, cov qauv ntawm ntau lub teb chaws tsis zoo ib yam. Piv txwv li, cov tebchaws nyob sab Europe tau hais tias qhov qis dua ntawm Al2O3 cov ntsiab lus rau cov khoom siv alumina refractory siab yog 42%. Nyob rau hauv Suav teb, high-alumina bricks feem ntau muab faib ua peb qib raws li Al2O3 cov ntsiab lus nyob rau hauv lawv: thawj-qib high-alumina bricks-Al2O3 cov ntsiab lus ntau dua los yog sib npaug rau 75%; qib thib ob high-alumina cib-Al2O3 cov ntsiab lus Ntau dua lossis sib npaug li 65%; qib thib peb high-alumina cib-Al2O3 cov ntsiab lus Ntau dua lossis sib npaug li 55%; Al2O3 cov ntsiab lus tsawg dua 48% yog hu ua av nplaum refractory cib.
Txij li thaum lub ntsiab raw khoom ntawm high-alumina cib belongs rau aluminium pob zeb, nws cov ntsiab lus tseem ceeb yog tsim ntawm txhuas oxide, hlau oxide, silicon oxide, thiab lwm yam. Yog hais tias aluminium oxide thiab silicon oxide yog siv los ua kom paub qhov txawv ntawm cov qib high-alumina cib, Tom qab ntawd hlau oxide yog impurity nyob rau hauv high-alumina cib. Ntau tus neeg yuav tsa ib lo lus nug, dab tsi cuam tshuam rau cov ntsiab lus hlau hauv high-alumina cib rau lawv qhov kev ua tau zoo?
Cov ntsiab lus hlau nyob rau hauv high-alumina bricks muaj kev cuam tshuam loj rau nws qhov kev ua tau zoo. Cov hlau nyob rau hauv siab alumina refractory cib tuaj yeem txo nws cov refractoriness. Qhov laj thawj tseem ceeb yog vim li cas hlau oxides yooj yim los tsim cov kua qaub qis-melting point ntawm qhov kub thiab txias. Nyob rau tib lub sijhawm, cov ntsiab lus hlau yog ib qho yooj yim rau kev hnov mob nrog lwm yam khoom hauv qhov chaw kub kub, yog li hloov cov qauv sab hauv ntawm high-alumina cib, uas ua rau txo qis hauv lawv lub zog kub. Cov ntsiab lus hlau siab yuav ua rau cov thermal conductivity ntawm high-alumina cib, uas ua rau kom kub hloov mus sai dua thiab cuam tshuam rau lawv cov rwb thaiv tsev cov nyhuv thiab lub zog siv efficiency. Yog li ntawd, nyob rau hauv cov txheej txheem ntawm high-alumina cib, muaj cov kev cai nruj me ntsis ntawm cov ntsiab lus impurity nyob rau hauv cov ntaub ntawv raw.
Nyob rau hauv cov txheej txheem ntawm high-alumina cib, cov ntsiab lus hlau ntawm qee cov high-alumina cib nrog cov ntsiab lus siab aluminium yog tsau. Piv txwv li, cov khoom siv raw ntawm 48% high-alumina cib siv 60% high-alumina bauxite clinker, thiab cov ntsiab lus hlau yuav tsum tsis pub dhau 3.0%; cov khoom siv raw ntawm 55% high-alumina cib siv 65% high-alumina bauxite clinker, thiab cov ntsiab lus hlau yuav tsum tsis pub dhau 2.5%; cov khoom siv raw ntawm 65% high-alumina cib siv 75% high-alumina bauxite clinker, thiab cov ntsiab lus hlau yuav tsum tsis pub dhau 2.2%; cov khoom siv raw ntawm 75% high-alumina cib siv 85% high-alumina bauxite clinker, thiab cov ntsiab lus hlau yuav tsum tsis pub dhau 2.0%; Cov khoom siv raw ntawm 80% high-alumina cib siv 88% high-alumina bauxite clinker, thiab cov ntsiab lus hlau yuav tsum tsis pub dhau 1.5%. Yog li ntawd, kev tswj nruj ntawm cov ntsiab lus hlau yog qhov tsim nyog rau qhov zoo ntawm high-alumina cib.
Yuav ua li cas tswj cov ntsiab lus hlau nyob rau hauv siab alumina refractory bricks yuav tsum tsis tsuas yog tswj cov ntaub ntawv raw, tab sis kuj tswj cov txheej txheem ntau lawm. Tam sim no, cov khoom lag luam raw khoom feem ntau tswj cov ntsiab lus hlau hauv cov ntaub ntawv raw los ntawm ore hnav khaub ncaws, purification, tshem tawm cov hlau thiab lwm yam txheej txheem kom ua tau raws li qhov yuav tsum tau ua ntawm cov qib sib txawv ntawm cov qib siab alumina cib thiab xyuas kom meej tias cov alumina cib siab tuaj yeem ua tau zoo hauv qhov sib xws. ib puag ncig. Hauv cov txheej txheem tsim khoom, cov khoom siv raw khoom yuav tsum tau tswj kom txo cov ntsiab lus hlau hauv siab alumina cib. Qhov no tsis yog tsuas yog los xyuas kom meej qhov zoo ntawm alumina bricks, tab sis kuj tsim nyog heev nyob rau hauv cov txheej txheem ntawm ntau lawm cov ntaub ntawv refractory.
