The issue of recycling the liquid after copper displacement from copper sulfate solution using iron
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After iron is used to displace copper from the copper sulfate solution, the liquid that remains is mainly ferrous sulfate. Can this liquid be reused in the leaching of ores after adding acid? Those with experience please offer guidance.
This post was last edited by memory1980 on 2009-11-10 at 11:30. Nantong Xinwei Legend is used as a reductant leaching agent for copper-cobalt ores
Long-term cyclic reuse is not possible. An excessive amount of accumulated iron can put pressure on subsequent processes.
2# memory1980 Which company do you work for? They even got our names wrong – Nantong Xinwei
This post was last edited by FILTRATION-MAN on 2009-11-10 12:11. Sorry, haha; I’ve been there twice, to your analysis lab!
What impacts will it have on subsequent processes?
The result of long-term cyclic use is the cumulative accumulation of Fe2+, Ca2+, and Mg2+ in the solution; when they reach a certain level, a mixed crystal is formed, which can block pipes, accumulate on filter fabrics, and so on.
So, until when does that cycle generally continue? It would be good to have specific control parameters.
It can be clearly stated that circulation is possible, but it is necessary to monitor the specific gravity of the solution; it is best to keep this value slightly below that at which crystals will form. Once this level is reached, the solution can be transferred to a concentration tank, where it can be concentrated and then cooled to induce crystallization. The resulting crystals can be sold to micro-fertilizer manufacturers. That’s fine; a hygrometer costs 5 yuan, which is very affordable.
A common way of expressing the specific gravity of solutions, widely used in hydrometallurgical production.