Siabhnav resistant castablesyog siv nyob rau hauv arch choj qhov chaw ntawm lub tes tsho kilns. Lawv yog cov castables xaiv rau kev kho thaum muaj xwm ceev ntawm lub kiln nyob rau hauv xyoo tas los no.
Lub tes tsho kiln yog ob lub tog raj kheej kiln, thiab cov arch txuas hniav kuj yog ob npaug. Piv txwv li, ib lub tes tsho muaj 8 koov choj, thiab ob lub tes tsho muaj 16 koov choj. Tus naj npawb ntawm cov koov txuas ntxiv yog nce lossis txo raws li qhov loj ntawm lub tes tsho kiln, thiab tus lej tsis tas yuav tsum tau ua. Vim hais tias qhov no yuav tsum tau dais lub siab hnyav ntawm cov khoom, thiab yog ze ze rau lub combustion chamber, raws li zoo raws li yaig ntawm cua ceev thiab alkaline cua nyob rau hauv lub qhov cub hauv ob sab phlu. Nyob rau hauv ib txwm muaj xwm txheej, siv magnesia-alumina spinel cib, tab sis qhov kub ntawm lub tes tsho kiln tsis siab npaum li cov cement rotary kiln. C-shaped magnesia-alumina spinel cib yog tsim nyog.
Nyob rau hauv cov ntaub ntawv ntawm kev kho thaum muaj xwm ceev, cov chaw tsim tshuaj paus yuav siv castables rau kev kho thaum muaj xwm ceev, tab sis kev xaiv ntawm hom castables yog ib qho teeb meem nyuaj, vim hais tias qhov kub ntawm lub koov choj ntawm lub tes tsho kiln tsis tshaj 1300 degree. Yog tias siv cov corundum castables, corundum yuav tsis condense zoo vim qhov kub thiab txias. Cov castables yuav tsum tau tev tawm. Yog tias siv cov mullite castables, kev yaig ntawm cov cua txhuam thiab cov khoom siv raw hauv lub qhov cub, ua ke nrog kev yaig ntawm alkali huab cua ntawm cov hmoov tshauv dawb, tsis tuaj yeem ua tiav kev siv qhov tshwj xeeb no. Kev siv high-aluminium castables tsis hnav-resistant. Tag nrho tsis tsim nyog rau kev siv hauv cheeb tsam no.
Txawm li cas los xij, muaj qhov yuav tsum tau ua ua ntej rau kev kho thaum muaj xwm txheej ceev ntawm castables. Yog tias cov kab ntawm lub koov koov puas lawm, nws tsis tuaj yeem siv txhua yam castables. Cov kab yuav tsum tau ua nrog magnesia cib ua ntej siv cov castables tsim nyog.
Txij li thaum lub arch choj ib feem ntawm lub tes tsho kiln yuav tsum tau ris lub nra thiab tiv thaiv cua txhuam thiab alkali hlau yaig, nws yog tsim nyog los siv siab hnav castables vim hais tias cov ntaub ntawv raw ntxiv rau lub siab hnav-resistant castables muaj xws li mullite thiab muaj ib tug tsim nyog. feem ntawm silicon carbide, thiab ces 1% steel fiber yog ntxiv. Mullite thiab silicon carbide txhim kho thermal poob siab thiab hnav tsis kam, thiab steel fiber ntau nce rub kev ua haujlwm. Ntxiv mus, ntxiv silicon carbide tuaj yeem tiv thaiv alkali hlau corrosion. tawv nqaij tshwm sim.
Yog li ntawd, nws yog qhov tsim nyog los siv ntau yam ntawm cov khoom hnyav hnyav hnyav los tiv thaiv cov kabmob thiab alkali yaig thaum kho xwm txheej ceev ntawm koov txuas hniav.
