Refractory Structure

Silica yog cov khoom tseem ceeb ntawm cov kua qaub refractory, thiab silica cib thiab av nplaum cib feem ntau yog siv. Silica cib yog cov khoom siv siliceous uas muaj ntau dua 94 feem pua ​​​​silicon oxide. Cov khoom siv raw siv xws li silica thiab khib nyiab silica cib. Nws muaj zog tiv taus acid slag yaig, siab load softening kub, thiab tsis shrinkage los yog txawm me ntsis expansion tom qab rov calcination; Txawm li cas los xij, nws yog ib qho yooj yim rau eroded los ntawm alkaline slag thiab tsis zoo thermal poob siab. Silica cib yog siv rau hauv cov khoom siv thermal xws li coke cub, iav rauv, acid steel rauv, thiab lwm yam. Cov av nplaum siv cov av nplaum refractory ua cov khoom siv tseem ceeb thiab muaj 30% ~ 46% alumina. Nws yog cov khoom siv tsis muaj zog acid refractory nrog zoo thermal vibration tsis kam thiab corrosion tsis kam rau acid slag. Nws yog dav siv.
Cov refractories nruab nrab yog tsim los ntawm alumina, chromium oxide lossis carbon. Corundum cov khoom uas muaj ntau dua 95 feem pua ​​​​alumina yog cov khoom siv hluav taws xob zoo nrog ntau yam kev siv. Chromium bricks nrog chromium oxide yog lub ntsiab tivthaiv muaj corrosion kuj zoo rau steel slag, tab sis tsis zoo thermal shock kuj, thiab tsis tshua muaj load deformation kub ntawm high kub. Cov ntaub ntawv carbon refractory muaj xws li carbon bricks, graphite khoom thiab silicon carbide khoom, uas muaj tsawg thermal expansion coefficient, siab thermal conductivity, zoo thermal shock kuj, siab kub zog, thiab kuj rau acid, alkali thiab ntsev corrosion. Tshwj xeeb tshaj yog tsis muaj zog acid thiab alkali muaj kev tiv thaiv zoo, thiab tsis raug hlau thiab slag wetting, thiab yog lub teeb nyob rau hauv qhov hnyav. Nws yog dav siv los ua cov khoom siv hluav taws xob kub kub hauv ob sab phlu, nrog rau lub tshuab hluav taws xob kub siab rau cov roj av thiab tshuaj lom neeg kev lag luam.
Basic refractories yog tsim los ntawm magnesium oxide thiab calcium oxide, thiab magnesium bricks feem ntau yog siv. Magnesia cib uas muaj ntau tshaj 80 feem pua ​​- 85 feem pua ​​magnesium oxide muaj kev tiv thaiv zoo rau alkaline slag thiab hlau slag, thiab lawv cov hluav taws kub tiv taus yog siab dua av nplaum cib thiab silica cib. Nws yog tsuas yog siv nyob rau hauv qhib-hearth rauv, oxygen tshuab converter, hluav taws xob rauv, non-ferrous hlau smelting khoom thiab ib co high-temperature cov cuab yeej.
Cov khoom siv refractory siv nyob rau hauv lub sijhawm tshwj xeeb suav nrog cov khoom siv kub kub, xws li alumina, lanthanum oxide, beryllium oxide, calcium oxide, zirconia, thiab lwm yam, thiab cov khoom siv refractory, xws li carbide, nitride, boride, silicide, sulfide, thiab lwm yam. High-temperature composite cov ntaub ntawv feem ntau suav nrog cermets, high-temperature inorganic coatings thiab fiber-reinforced ceramics.
Feem ntau siv cov ntaub ntawv refractory suav nrog AZS cib, corundum cib, ncaj qha sib txuas magnesia-chrome cib, silicon carbide cib, silicon nitride bonded silicon carbide cib, nitride, silicide, sulfide, boride, carbide thiab lwm yam ntaub ntawv uas tsis yog-oxide refractory; Calcium oxide, chromium oxide, alumina, magnesium oxide, beryllium oxide thiab lwm yam ntaub ntawv refractory.
Feem ntau siv cov ntaub ntawv insulating refractory suav nrog cov khoom diatomite, cov khoom siv asbestos, thermal rwb thaiv tsev panels, thiab lwm yam.
Cov khoom siv amorphous refractory nquag siv xws li cov khoom siv kho cua sov, cov khoom siv ramming, castable, yas, refractory av nkos, refractory gunning khoom, refractory projection khoom, refractory txheej, hnav refractory castable, phom av nkos, thiab lwm yam.
Bulk refractories (unshaped refractories): unshaped refractories yog cov refractories uas yog tsim los ntawm cov ntaub ntawv zoo li granular thiab hmoov thiab binders thiab yog siv ncaj qha yam tsis muaj molding thiab firing. Feem ntau, cov khoom siv granular uas tsim cov khoom siv no yog hu ua aggregate, cov khoom siv hmoov hu ua admixture, thiab cov binder hu ua binder. Cov khoom no tsis muaj qhov ruaj khov, thiab tuaj yeem ua rau slurry, av nkos muab tshuaj txhuam thiab xoob, yog li nws tseem hu ua bulk refractory. Hom refractory no tuaj yeem tsim cov qauv tsis sib koom ua ke, yog li nws tseem hu ua integral refractory.
Lub hauv paus muaj pes tsawg leeg ntawm amorphous refractory yog granular thiab powdery refractory. Raws li nws txoj kev siv, nws tuaj yeem ua los ntawm ntau yam ntaub ntawv. Txhawm rau ua ke cov ntaub ntawv refractory tag nrho, tshwj tsis yog rau qee qhov tshwj xeeb, cov hom tsim nyog thiab ntau ntawm cov binders feem ntau ntxiv. Txhawm rau txhim kho nws cov plasticity lossis txo cov dej haus, ib qho me me ntawm cov yas tsim nyog thiab cov dej reducer tuaj yeem ntxiv. Txhawm rau ua kom tau raws li lwm cov kev cai tshwj xeeb, ib qho me me ntawm cov khoom tsim nyog kuj tuaj yeem muab ntxiv cais.