Refractory Cement yog dab tsi? Dab tsi yog Pawg?
Tag nrho nrog cov khoom zoo bauxite thiab cov txiv qaub zoo li cov khoom siv raw, raws li qee qhov kev faib ua feem ntawm cov khoom siv raw rau hauv qhov muaj pes tsawg leeg, tom qab sintering rau aluminate raws li cov ntsiab lus tseem ceeb ntawm clinker, thiab tom qab ntawd hauv av ua hmoov zoo, ua los ntawm hluav taws tsis kam ntawm hydraulic cement khoom, hu ua refractory cement. Lub refractoriness ntawm refractory cement tsis tsawg dua 1580 degrees Celsius.
Refractory cement tseem hu ua kub kub cement. Cement nrog cov ntaub ntawv tshwj xeeb siv rau hauv kev npaj ntawm kub resistant (refractory) pob zeb. Cov tseem ceeb yog:
① Tsawg-calcium aluminate refractory cement nrog ntshiab bauxite thiab limestone ua cov ntaub ntawv tseem ceeb, suav nrog Fabkis lub Secar cement.
② Dolomite ua cov khoom siv tseem ceeb, thiab tom qab ntawd ntxiv apatite, hlau ore thiab lwm yam dolomite high-temperature cement.
③ Siv cov ntaub ntawv uas tuaj yeem tsim cov tshuaj tiv thaiv thiab ua kom tawv nqaij ntawm qhov kub thiab txias, xws li refractory sulfate, borate thiab phosphate ua cov cement kub.
