金剛(gang)砂(sha)(sha),棕剛(gang)玉,黑剛(gang)玉,白剛(gang)玉,石榴(liu)石,鋼砂(sha)(sha),鐵砂(sha)(sha),除銹砂(sha)(sha),石英砂(sha)(sha),碳化(hua)硅,陶粒(li)砂(sha)(sha),拋光砂(sha)(sha),核桃殼,氧(yang)化(hua)鋁粉,銅(tong)礦(kuang)砂(sha)(sha)
棕(zong)(zong)(zong)剛玉,俗名(ming)(ming)又稱金剛砂,是用(yong)礬土(tu)、碳素材(cai)料、鐵屑(xie)三種(zhong)原(yuan)料在電爐中(zhong)經過融化還原(yuan)而制(zhi)得的棕(zong)(zong)(zong)褐色(se)人造剛玉,故為此名(ming)(ming)。棕(zong)(zong)(zong)剛玉主要化學成份是 AL2O3,其(qi)含量在94.5%-97%,另(ling)含有少量的Fe,Si,Ti等。