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棕刚玉是以优质磨料级矾土为原料,配以辅料,于电弧炉利2250℃以上离温精炼制成剧火度?850℃以上、br/>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?
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