Cov qauv ntawm cov khoom siv refractory

Cov khoom siv acidic refractory feem ntau yog tsim los ntawm silica, thiab feem ntau siv yog silica cib thiab av nplaum cib. Silica cib yog cov khoom siv siliceous uas muaj ntau dua 94 feem pua ​​​​ntawm silicon oxide. Cov ntaub ntawv raw siv yog silica, khib nyiab silica cib, thiab lwm yam. Nws muaj zog tiv taus acid slag yaig, siab softening kub nyob rau hauv load, thiab tsis ntsws nyob rau hauv ntim tom qab rov calcination, thiab txawm me ntsis expands; Txawm li cas los xij, nws yooj yim corroded los ntawm alkaline slag thiab tsis zoo thermal poob siab. Silica cib feem ntau yog siv rau hauv cov khoom siv thermal xws li coke ncu, iav melting furnaces, thiab acid steelmaking furnaces. Cov av nplaum siv cov av nplaum refractory ua cov khoom siv tseem ceeb thiab muaj 30 feem pua ​​​​rau 46 feem pua ​​​​alumina. Lawv yog cov tsis muaj zog acidic refractory cov ntaub ntawv nrog zoo thermal poob siab tsis kam thiab corrosion kuj rau acidic slag. Lawv tau siv dav.
Cov khoom siv hluav taws xob tsis zoo 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. Chrome bricks nrog chromium oxide yog lub ntsiab tivthaiv muaj corrosion kuj zoo rau steel slag, tab sis tsis zoo thermal poob siab kuj thiab tsis tshua muaj deformation kub nyob rau hauv high kub load. Carbonaceous refractory cov ntaub ntawv muaj xws li carbon bricks, graphite cov 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 yaig, tshwj xeeb tshaj yog qaug zog acid thiab alkali. Zoo kuj, tsis wetted los ntawm hlau thiab slag, lub teeb yuag. Nws yog dav siv los ua cov khoom siv hluav taws xob kub kub, thiab tseem siv los ua autoclave hauv ob sab phlu rau roj av thiab tshuaj lom neeg kev lag luam.
Alkaline refractories feem ntau yog tsim los ntawm magnesia thiab calcium oxide, thiab magnesia bricks feem ntau siv. Magnesia bricks uas muaj ntau tshaj 80 feem pua ​​​​mus rau 85 feem pua ​​​​ntawm magnesium oxide muaj kev tiv thaiv zoo rau alkaline slag thiab hlau slag, thiab lawv cov refractoriness siab dua li cov av nplaum cib thiab silica cib. Feem ntau siv nyob rau hauv qhib lub qhov cub, oxygen tshuab converter, hluav taws xob rauv, non-ferrous hlau smelting khoom thiab ib co khoom kub kub.
Cov khoom siv refractory siv nyob rau hauv lub sijhawm tshwj xeeb suav nrog cov khoom siv kub-kub oxide, xws li alumina, lanthanum oxide, beryllium oxide, calcium oxide, zirconia, thiab lwm yam., refractory compound cov ntaub ntawv, xws li carbide, nitride, boride, silicide thiab 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 refractories xws li AZS cib, corundum cib, ncaj qha sib txuas magnesia-chrome cib, silicon carbide cib, silicon nitride bonded silicon carbide cib, nitrides, silicides, sulfides, borides, carbides thiab lwm yam uas tsis yog-oxide refractory ntaub ntawv. ; Calcium oxide, chromium oxide, aluminium oxide, magnesium oxide, beryllium oxide thiab lwm yam ntaub ntawv refractory.
Feem ntau siv thermal rwb thaiv tsev cov ntaub ntawv refractory muaj xws li diatomite khoom, asbestos khoom, thiab thermal rwb thaiv tsev boards.
Unshaped refractories feem ntau siv xws li cov khoom siv kho cua sov, cov ntaub ntawv ramming, castables, plastics, refractory av nplaum, refractory gunning cov ntaub ntawv, refractory projection cov ntaub ntawv, refractory coatings, lightweight refractory castables, phom av nkos, thiab lwm yam.
Cov khoom siv refractory ntau (tsis zoo li cov khoom siv refractory): Cov khoom tsis zoo li cov khoom siv refractory yog cov khoom siv refractory uas yog tsim los ntawm cov ntaub ntawv zoo li granular thiab powdery thiab binders tsis muaj molding thiab firing. Feem ntau, cov khoom siv granular uas tsim cov khoom no yog hu ua aggregate, cov khoom siv hmoov hu ua admixture, thiab cov binder hu ua cement. 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 refractories. Cov khoom siv refractory zoo li no tuaj yeem siv los tsim cov qauv seamless, yog li nws tseem hu ua cov khoom siv refractory.
Lub hauv paus muaj pes tsawg leeg ntawm unshaped refractory cov ntaub ntawv yog granular thiab powdery refractory cov ntaub ntawv. Raws li nws txoj kev siv, nws tuaj yeem ua los ntawm ntau yam ntaub ntawv. Txhawm rau ua ke cov ntaub ntawv refractory no rau hauv tag nrho, tshwj tsis yog qee qhov tshwj xeeb, feem ntau yog ntxiv hom thiab ntau npaum li cas ntawm binders. 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 qhov tsim nyog lwm cov khoom xyaw kuj tuaj yeem ntxiv.