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棕剛玉是以優質磨料級礬土為原料，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 raw
material and matched勿the carbon material and scr叩Uon.The degree of refractory is more than 1850℃.