Refractory castable qauv

Refractory castables yog tsim los ntawm peb qhov chaw: binder, aggregate, thiab admixture, qee zaum nrog ntxiv ntawm coagulants.
Refractory aggregate yog lub cev tseem ceeb ntawm refractory pob zeb, thiab ntau yam khoom siv refractory (xws li av nplaum, siab alumina, silicon, magnesium, thiab lwm yam), calcined clinker, los yog ntau yam khib nyiab cib tuaj yeem siv los ua refractory aggregates rau qee yam. Qhov loj me me ntawm cov aggregates muaj feem cuam tshuam rau qhov zoo ntawm cov khoom, yog li ntxiv rau qee qhov kev txwv ntawm qhov loj ntawm cov khoom sib sau, kuj tseem muaj qee qhov kev xav tau ntawm cov khoom kom muaj nuj nqis. Refractory aggregates yog sib npaug rau cov pob zeb crushed thiab xuab zeb ntawm lub tsev zoo tib yam. Nyob rau hauv cov khoom xyaw ntawm refractory pob zeb, aggregates feem ntau suav rau 70 feem pua ​​​​rau 80 feem pua. Ntawm lawv, coarse aggregate (5-20mm) nyiaj rau 35-45 feem pua ​​ntawm cov khoom xyaw; Fine aggregate (0.15-5mm) suav rau 30-35 feem pua ​​.
Cov khoom siv nplaum ua lub luag haujlwm hauv kev sib txuas thiab tawv, muab cov khoom muaj zog. Cov hom binders tuaj yeem siv tau xws li Portland cement zoo tib yam, bauxite cement (siab muag cement), magnesium cement, dej iav, phosphoric acid, thiab lwm yam. Kom paub meej tias cov pob zeb muaj hluav taws kub txaus (lub binder yog flux ntawm qhov kub thiab txias. , thiab qhov ntau nws siv, qhov qis dua qhov hluav taws kub tsis kam ntawm cov pob zeb), thiab txhawm rau txo cov ntim ntim thaum siv, cov ntaub ntawv yuav tsum tsawg li tsawg tau, feem ntau yog 10 feem pua ​​​​rau 25 feem pua, thiab cia siab tias qhov binder thiab pob txha cov ntaub ntawv tsis tuaj yeem tsim ntau cov khoom uas tsis tshua muaj melting.
Qee cov pob zeb refractory (xws li phosphate refractory pob zeb) yuav tsum tau ntxiv me me ntawm coagulant nyob rau hauv cov khoom xyaw kom ceev lub hardening thiab consolidation ntawm cov pob zeb.
Txhawm rau txhim kho qhov ua tau zoo ntawm cov pob zeb refractory, xws li ua kom nws lub zog thaum lub sij hawm cua sov thiab txo cov ntim ntim, feem ntau 10 feem pua ​​​​rau 25 feem pua ​​admixture yog feem ntau ntxiv. Cov khoom siv raw ntawm cov khoom sib xyaw yog tib yam li cov khoom sib sau ua ke, thiab nws yog cov hmoov av refractory clinker hmoov, nrog rau qhov zoo ntawm 70 feem pua ​​​​rau 80 feem pua ​​​​hauv qab 0.088mm.