棕剛玉是以優(yōu)質(zhì)磨料級礬土為原料,配以輔料,于電弧爐利2250℃以上離溫精煉制成劇火度在1850℃以上。Brown Fused AMxma is fused in the electric-arc furnace under the high temperature dabove 2250t with吻h quality abrasive bauxite as rawmaterial and matched勿the carbon material and scr叩Uon.The degree of refractory is more than 1850℃.