Technology for preparing cell-level high purified nickel sulfate by the selective leach of water quenching high grade nickel and sulfuric acid
A selective, nickel sulfate technology, applied in the field of hydrometallurgy, can solve problems such as the difficulty in producing battery-grade high-purity nickel sulfate, and achieve the effects of high labor production efficiency, good product quality, and advanced technology
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[0025] Hereinafter, the present invention will be further described by using the drawings and embodiments.
[0026] Reference figure 1 The process of preparing battery-grade high-purity nickel sulfate by selective leaching of water-quenched high-matte nickel with sulfuric acid sequentially includes the following steps:
[0027] Water crushed high nickel matte fine grinding process 1 adopts two-stage overflow ball mill in self-flow series open circuit fine grinding;
[0028] The first stage of atmospheric leaching step 2 is to flush the finely ground high matte ore slurry with water and the leaching solution from liquid-solid separation step 6 into the slurry tank, continuously blow air into the slurry tank, add 93% sulfuric acid, and stir evenly. Atmospheric leaching tank performs the first stage of atmospheric leaching;
[0029] The liquid-solid separation step 3 is to send the first-stage atmospheric leaching slurry to the thickener for liquid-solid separation, and the separated...
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