Engineering design for the wet-process production of manganese sulfate and zinc sulfate from manganese ore and zinc ore

It’s simple; just look up some information

I mean the engineering design or application for production; please give me some advice.

Reply to 1# Jiang Liushi: There are many documents on this topic, but few of them are applicable in industry. Zinc and manganese are difficult to separate.

Please provide more detailed information about your situation.

It is difficult to separate manganese from zinc in sulfuric acid systems, unless very strong oxidizing agents are used to oxidize divalent manganese into manganese dioxide, which can then be filtered out. However, this method does not achieve complete separation. I am not aware of the composition of your ore – is it a manganese-zinc mixture? In the process of electrolytic zinc production, manganese dioxide is used to oxidize divalent iron ions in the solution; over time, this can lead to an excess of divalent manganese in the solution (15–20 g/L), resulting in increased viscosity, higher electrical resistance, and greater energy consumption. It is therefore necessary to remove manganese from the solution. In experiments, peroxysulfuric acid or ozone has been used for this purpose, but there may be challenges in implementing such methods on an industrial scale. If you plan to build a plant, you should first conduct process tests. After successful small-scale tests, further simulated industrial trials are needed to have a basis for designing the plant. It seems that no one in China has yet implemented such a process, so there are few examples available for reference. It’s better to conduct tests first rather than starting a project blindly. If needed, please call 13769232997

What you are referring to is the leaching of pyrolusite (MnO2) and zinc ore (ZnS) with acid, resulting in the formation of manganese sulfate and zinc sulfate. Then, taking advantage of the fact that manganese sulfate has a lower solubility at higher temperatures, it is crystallized at high temperatures; however, some residue remains in the zinc sulfate, making it difficult to separate zinc from manganese later on. This method is similar to the production of manganese sulfate using pyrolusite + pyrite + sulfuric acid (the two-mineral-acid method). I have heard of electrolysis of zinc and manganese in the same tank, but it is only at the experimental stage.

Zinc-manganese electrolysis in the same cell can produce zinc sheets and manganese dioxide.

Zinc-manganese electrolysis in the same cell is feasible, but there are issues related to efficiency and productivity when applying it in practical production; one can refer to relevant papers from Central South University for more information

You can ask Professor Mei Guanggui from Central South University; she has written a book titled \"China’s Manganese Industry Technology\", which might be helpful to you.

Thank you all for your attention and responses. I'm talking about two issues. One is to produce manganese sulfate solution using pyrolusite and sulfuric acid. The previous one was zinc ash, leached with sulfuric acid to produce a zinc sulfate solution. When producing zinc sulfate solution by leaching with pyrolusite and sulfuric acid, the slurry contains iron hydroxide colloids, making it difficult to filter and wash. I wonder how everyone solved it?