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采用低污染无铬钝化剂对电解金属锰进行钝化试验,钝化效果好,产品抗氧化性高,产生的废水污染远比铬酸盐钝化剂的低。为全线推广电解金属锰无铬钝化工艺提供了数据依据。广西大新锰矿已全线采用无铬钝化工艺,为环境消除了一个重金属污染源。
Passivation test of electrolytic manganese metal with low pollution and chromium-free passivation agent has good passivation effect and high oxidation resistance of the product, resulting in much lower wastewater pollution than chromate passivation agent. To promote the entire line of electrolytic manganese manganese chromium-free passivation process provides a data basis. Daxin manganese mine in Guangxi has adopted a chromium-free passivation process across the board to eliminate a source of heavy metal pollution for the environment.