If the ph value is large, the displacement time will be extended, and other components in the leaching liquid, such as iron, aluminum and other impurities will also occur hydrolyzed precipitation and enter the coarse copper powder. The copper content in the leaching solution can be sampled and tested before the copper removal reaction. According to the total mass of the immersion solution and the percentage content of copper, according to the theoretical amount of the iron powder, PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC, iron removal.
In addition, if the iron powder particles are large, the replacement speed is reduced and the reaction time is longer; if the iron powder particles are small, the too fine iron powder is easy to stay in the immersion solution, PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC iron removal reduces the raw material cost, so the iron powder size preferably 100~1000 particles, preferably 100~500 particles.
Through many PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC experiments, it was found that the actual amount of iron powder was controlled at 1~1.5 times of the theoretical amount, which ensured that the copper in the leaching solution was fully replaced. At the same time, the residual iron powder in the leaching solution had less influence on the subsequent reaction and had a good effect.
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