Cov yam ntxwv ntawm Chrome-magnesia Cib Thiab Magnesia-chrome Brick
Chrome magnesia cib thiab magnesia chrome cib, nws lub ntsiab ntxhia muaj pes tsawg leeg yog spinel thiab magnesia. Nws tseem yog ua los ntawm sintered magnesia thiab chromite ua cov ntaub ntawv tseem ceeb, raws li qhov tsim nyog ntawm cov khoom sib xyaw alkaline refractory. Nws cov khoom raw piv tsis tau meej meej, feem ntau cov hlau ore ntxiv tsawg dua 50% yog hu ua magnesia-chromium cib, 50% lossis ntau tshaj 50% yog hu ua chrome-magnesium cib. Nws cov thev naus laus zis ntau lawm, cov yam ntxwv ua haujlwm thiab siv tau zoo ib yam.
Magnesia chrome cib feem ntau yog ua los ntawm cov khoom zoo sintered magnesia thiab chromite (Cr2O3: 30% 45%, CaO tsawg dua 1% ~ 1.5%), thiab nws cov txheej txheem ntau lawm zoo ib yam li magnesia cib. Inorganic magnesium ntsev tov yog siv los ua binder rau tsis-hlwb magnesium-chrome cib. Thaum lub sij hawm sintering txheej txheem, thaum MgO reacts nrog Cr2O3, Al2O3 los yog hlau oxide los ua spinel, lub porosity nyhuv yog tshwm sim los ntawm expansion. Cib yuav ua tau los ntawm pre-synthesized magnesium-chrome xuab zeb thiab yuav tsum tau raug rho tawm haujlwm nyob rau hauv ib tug oxidizing cua tshaj 1600 degree C.
