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1964年12月锡霍特-阿林选矿厂进行了各种不同氰化钠用量的工业性试验,其目的是用氰化钠作氰熔物的代用品(表1)。由试验结果看出,欲得到铅和锌好的选择性,氰化钠的用量只用30—40克/吨就足够了。从1965年1月起,处理硫化矿的药剂制度改变了。改用了石灰代替苏打灰来调节矿浆的硷度。采用氰熔物与氰化钠的选厂试验的比较指标列于表2中。
In December 1964, the Sihot-Alin Concentrator conducted various industrial tests on the amount of sodium cyanide aimed at using sodium cyanide as a substitute for the cyanide melt (Table 1). From the test results show that, to get a good lead and zinc selectivity, sodium cyanide consumption of only 30-40 g / tonne is sufficient. Since January 1965, the system of medicaments for the treatment of sulfide ores has changed. Use lime instead of soda ash to adjust the pH of the pulp. The comparative indicators for the plant selection test using cyanide and sodium cyanide are shown in Table 2.