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在球磨机中磨矿介质的磨损的一部分是由于腐蚀而引起的。本研究指出:用常用的防腐剂防止和减少在磨矿过程中发生的腐蚀,从而减少钢球的磨损是可能的。对镍-铜硫化矿的矿浆(60％固体),在实验室球磨机中用钢球进行了磨矿试验。磨损是根据在试验过程中用或不用亚硝酸钠,铬酸钠,偏硅酸钠,苯甲酸钠和硼砂防腐剂时重量的损失确定的。添加前三种药剂,磨损分别减少了49％,46％和44％以上,而其余的二种防腐剂没有减少磨损。对于有效的防腐剂,有一极限浓度,在此浓度以下时效果显著的降低,在此浓度以上时变化的比较小。亚硝酸钠防止磨损时原始的矿浆pH要在9以上,低于9是无效的。
Part of the abrasion of the grinding media in the ball mill is due to corrosion. This study indicates that it is possible to prevent and reduce the corrosion that occurs during the grinding process with commonly used preservatives, thereby reducing ball wear. Pulverized nickel-copper sulphide ore (60% solids) was ground with steel balls in a laboratory ball mill. The wear was determined on the basis of the weight loss during the test with or without sodium nitrite, sodium chromate, sodium metasilicate, sodium benzoate and borax preservatives. Adding the first three agents reduced wear by 49%, 46% and 44%, respectively, while the remaining two preservatives did not reduce wear. For effective preservatives, there is a limit concentration below which significant reductions in the effects occur, with less variation above this concentration. Sodium nitrite to prevent wear when the original pulp pH to more than 9, less than 9 is invalid.