1. Neeg kho tshuab
(I) Cov Khoom Siv Khoom Muag Khoom
Nyob rau hauv ntau cov kev lag luam tsim kev lag luam nyob rau hauv kev lag luam metallurgical thiab teb cov khoom siv cement, muaj ntau cov khoom siv yuav ntws sab hauv. Cov ntaub ntawv xws li hlau ore thiab coke thiab coke hauv lub moj tej tawg sov rauv yuav txuas ntxiv scour lubRefractory CastableThaum kev kub ceev vim lub cev rauv taws khiav lossis lub airflow tsav nws. Ntev thiab siab siv cov khau khiab yuav maj mam ua rau cov khoom siv ntawm cov khoom siv uas muaj tev tawm, tshwj xeeb yog nyob rau thaj chaw nrog cov khoom siv ceev thiab hloov tau yooj yim. Tus hnav yog loj dua.
(II) cov cuab yeej ua haujlwm kev sib txhuam
Yog tias cov khoom siv refractory castable yog siv rau hauv qee cov cuab yeej nrog cov tshuab hloov, raws li cov khoom siv nyob rau hauv kev sib cuag nrog lub Castable yuav tsim kev sib txhuam. Piv txwv li, thaum Kiln txoj kev txhawb nqa log, nws yuav tsim cov lus qhia kev sib txhuam nrog cov Castable ntawm nws cov kev txhawb nqa. Qhov kev sib txhuam sib txhuam no yuav hnav tawm ntawm cov khoom siv, ua rau hnav. Qhov siab dua cov kev sib txhuam ntau zaus thiab qhov ntau dua lub siab, qhov hnyav dua ntawm kev hnav.
2. Thermal kev ntxhov siab nyhuv
(i) hloov pauv
Refractory Castables tej zaum yuav ntsib kev hloov kub heev thaum siv. Piv txwv li, hauv ib qho kev kub ntxhov, cov cua sov sai sai thaum cov cua sov tig mus thiab poob sai sai thaum lub cub tawg nres. Qhov ntsuas kub sai no yuav ua rau thermal ntxhov siab sab hauv lubast. Vim tias qhov tsis sib xws ntawm kev nthuav dav thiab kev sib txuas ntawm cov sib txawv, nws yog qhov yooj yim rau kev ua kom muaj microcracks sab hauv cov khoom siv. Raws li tus naj npawb ntawm cov thermal mus rau nce, cov microcracks no yuav txuas ntxiv mus nthuav dav thiab ua kom nws muaj zog, thiab ua rau nws muaj kev phom sij rau sab nraud.
(II) gradient txawv
Hauv qee cov khoom siv kub siab, qhov sib txawv kub ntawm cov sib txawv ntawm cov Castable yog qhov loj, uas yuav ua rau qhov ntsuas kub. Piv txwv li, ntawm phab ntsa ntawm ib qho kub thiab txias rau ntawm ib sab kom sov siab heev, thaum kub nyob rau sab nraud yog tsawg, uas yuav tsim cov kev ntxhov siab hauv cov khoom siv. Yog tias nws nyob hauv lub xeev no ntev, kev ntxhov siab thermal yuav ua rau cov muaj zog rau deform thiab nrib pleb, yog li ua rau nws cov khoom ua kom yooj yim dua los ntawm cov ntaub ntawv.
III. Tshuaj lom neeg cov khoom siv tshuaj lom
(i) slag corrosion
Nyob rau hauv cov txheej txheem ntawm steel smeel, ib tug loj npaum li cas ntawm shag yog tsim tawm. Cov sleag feem ntau muaj ntau yam tshuaj lom neeg siv tshuaj, xws li hlau oxide thiab calcium oxide. Thaum lub swb tsuas yog CastPactory castable, nws tuaj yeem hnov cov tshuaj uas muaj qee yam hauv cov duab hauv lub Castable los tsim cov teb tshiab. Piv txwv li, cov tshuaj Alkaline hauv lub shell tuaj yeem hnov cov txheej txheem acidic hauv cov thawj coj, hloov nws ntau dua, ua rau nws nyiam hnav ris tsho sab nraud xws li khoom muag.
(II) Cov roj corrosion
Qee qhov kev muaj teeb meem kev nyab xeeb muaj muaj cov pa roj corrosive, xws li sulfur dioxide thiab lwm yam roj hauv iav cub. Cov roj av no yuav ua rau cov khoom siv hluav taws xob nrog cov khoom siv kub, ua rau muaj kev puas tsuaj rau cov khoom noj thiab maj mam corroding thiab ua kom muaj kev puas tsuaj, yog li ua kom zoo nkauj hnav. Tshwj xeeb tshaj yog thaum nyob rau hauv xws li ib qho cua muaj cov roj corrosive ntev, hnav yuav txuas ntxiv.
IV. Khoom Siv Khoom Siv Khoom Siv
(I) tsis muaj zog
Yog tias cov neeg kho tshuab ntawm cov refactory castable nws tus kheej, xws li compressive zog, yog qhov yooj yim, nws yog ib qho yooj yim los ua kev puas tsuaj saum npoo av, particle los thiab lwm yam kev ua kom zoo nkauj. Piv txwv li, qee qhov tsis muaj txiaj ntsig lossis tsis tsim nyog tau ua tiav, nws lub zog tsis tau ua tau raws li qhov yuav tsum tau siv, yuav ua kom nrawm.
(II) Porosity yog ntau dhau. Thaum lub porosity ntawm lubast yog dhau lawm, ntawm ib sab tes, nws cov qauv yog cov xoob thiab nws cov coj tsis zoo yog tsis zoo. Ntawm qhov tod tes, lub qhov hws yog qhov dhau los ua kev ntxhov siab cov ntsiab lus. Thaum raug rau sab nraud quab yuam lossis thermal kev ntxhov siab, cov kab nrib pleb muaj feem ntau yuav nthuav tawm los ntawm cov hws, ua kom muaj cov khoom hnav. Tsis tas li ntawd, cov hws tuaj yeem nqus qee cov tshuaj corrosive, txuas ntxiv ua kev puas tsuaj rau cov khoom siv.
