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易门铜矿老厂钴矿原设计为单一浮选流程,其设计指标为:原矿品位0.133%,精矿品位1.2%,回收率65%。由于原矿中含有-0.074毫米占60%以上的大量原生矿泥,因此给浮选生产带来严重困难,不仅药剂消耗量大,工艺条件要求严,而且矿浆需要加温至30～40℃。生产实践表明,其试生产的最好指标仅达到回收率35%、精矿品位
The original copper plant of Yimen Copper Mine was originally designed as a single flotation process. Its design indexes are: raw ore grade of 0.133%, concentrate grade of 1.2% and recovery rate of 65%. As the raw ore contains a large amount of native slime with a mass fraction of -0.074 mm accounting for more than 60%, the flotation process poses serious difficulties for the flotation production. Not only the consumption of reagents is high, but the process conditions are strict, and the slurry needs to be warmed to 30-40 ° C. Production practice shows that the best indicators of its pilot production only reached 35% recovery rate, concentrate grade