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有許多銅矿选矿厂生产的銅精矿品位很低(多数在10％以下),主要是由于生产、研究与設計部門的选矿工作者当中,较为普遍的存在着一个共同看法:認为精矿品位与选矿回收率之間存在着矛盾;要得到较高的回收率,精矿品位就不容易提高,如果提高精矿品位,就势必会降低选矿回收率。因此,对这一問題未能給予应有的重視。最近苏联选矿专家聶納罗柯莫夫同志对提高精矿品位問題提出了宝貴建議,他認为如果精矿品位提高一倍,就是回收率降低了1～3％也是合算的,并且提高精矿品位也不一定会降低回收率,在某些情况下还会同时提高。目前苏联生产的銅精矿品位一般都在18～20％,有的高达25％。 銅精矿品位提高一倍,精矿量就会减少一半,就能使現有冶炼設备的处理能力提高一倍。并且冶炼时耗用的燃料和熔剂以及由选厂到冶炼厂的精矿运輸費
There are many copper concentrate concentrates produced at very low grades (mostly below 10%), mainly due to the common view among ore dressing workers in the production, research and design sectors that the concentrate There is a contradiction between grade and dressing recovery; to get a higher recovery, concentrate grade is not easy to increase, if you improve the concentrate grade, it will inevitably reduce the beneficiation recovery rate. Therefore, we should fail to pay due attention to this issue. Recently, the Soviet Union mineral expert Nenaluo Komov comrades to improve the quality of concentrate put forward valuable suggestions, he believes that if the concentrate grade doubled, the recovery rate is reduced by 1-3% is also cost-effective, and improve the fine Mineral grade also does not necessarily reduce the recovery rate, in some cases will also increase. At present, the grade of copper concentrate produced in the Soviet Union is generally 18 to 20%, and some up to 25%. Doubling the grade of copper concentrates reduces the amount of concentrate by half, doubling the processing power of existing smelting equipment. As well as the fuels and fluxes consumed during smelting and the concentrate transport costs from concentrator to smelter