Separation of zinc calcine
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The raw material used is zinc concentrate, but it contains a high level of iron; the iron-to-zinc ratio exceeds 20%. After being roasted in a bubbling furnace, the zinc concentrate is sent to the electrolysis plant for electrolysis. However, the zinc solubility rate has recently been only 87% or 88%, failing to reach the 90.5% standard. The company now plans to use magnetic separation to purify zinc calcine first, separating out some of the iron, thereby increasing the solubility of zinc. According to available information, zinc ferrite is non-magnetic, while iron oxide and ferric oxide are magnetic. Is it possible to proceed with magnetic separation directly, without pre-treatment? Or what methods can be used after processing so that magnetic separation is possible? Let’s discuss this together; it’s quite practical
I’ve reviewed many relevant studies, all of which discuss how to first decompose zinc ferrite through heating and reduction or acidolysis, in order to increase the solubility of zinc. Is it possible to use magnetic separation directly?
The effect of direct magnetic separation is also average, so it is necessary to calculate the overall economic benefits.
Hello, may I ask what substances can be separated through magnetic separation? By how much does the iron content generally decrease?