The invention discloses a method for producing a pure
cobalt and
manganese sulfate solution through
zinc smelting cobalt slag. Firstly, the
zinc smelting cobalt slag is subjected to acid
pickling andfilter pressing, and acid
pickling slag is obtained; the obtained acid
pickling slag is subjected to washing, and filter pressing, and washing slag is obtained; the washing slag is subjected to reduction leaching and filter pressing, and leaching liquid is obtained; the leaching liquid is subjected to
vulcanization cadmium removal and filter pressing, and liquid after
vulcanization is obtained; anoxidizing agent is added into the liquid after
oxidizing agent, Fe2+ in the solution is oxidized into Fe3+, a neutralizing agent is added for adjusting the pH of the solution, the Fe3+ is hydrolyzedto form
sediment, filter pressing is carried, and liquid after
iron removal is obtained; a fluorinating agent is added into the liquid after
iron removal to be subjected to a reaction and filter pressing, and liquid after fluorination is obtained; and finally, an organic phase is adopted for extracting and
phase splitting of the liquid after fluorination, extraction
raffinate is obtained, that isthe pure cobalt and
manganese sulfate solution. According to the technical scheme, the technical problems that cobalt slag is difficultly sold, and valuable
metal cannot be sufficiently used can be solved.