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在著作〔1〕中列出了处理镍-磁黄铁矿精矿的水冶流程前几步加工工序的半工业试验的一些结果。该流程包括精矿矿浆的加压氧化浸出,氧化矿浆硫酸溶液的除铁,随后用逆流倾析法将含有色金属硫酸盐的溶液与矿浆固相进行分离。但是,为在工业规模实现逆流洗涤过程,氧化矿浆逆流洗涤工序所达到的单位生产能力0.4吨/(米~2·天),则要求相当大的浓密面积和相应地大量的投资费用。
Some of the results of the semi-industrial tests dealing with the first few steps of the hydrometallurgical processes of nickel-pyrrhotite concentrates are listed in [1]. The process involves pressurized leaching of the ore concentrate, iron removal from the slurry sulfuric acid solution, and subsequent separation of the solution containing the colored metal sulphate from the solid phase of the slurry by means of countercurrent decantation. However, in order to achieve a countercurrent washing process on an industrial scale, the oxidized pulp countercurrent washing process achieves a unit production capacity of 0.4 tons / (m to 2 days), requiring a rather large dense area and a correspondingly large investment cost.