Analysis and Selection of Production Processes for High-Purity Manganese Sulfate AITranslate

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Chinese Library Classification Number:TF792[冶金工程]

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The current status of high-purity manganese sulfate production processes is reviewed.The princi-ples,advantages and disadvantages of different techniques in the major production steps during high-purity manganese sulfate are analyzed and compared.Furthermore,selection principles for critical process parame-ters in each step are established.The critical factors in the leaching process are raw material selection and leachate concentration control.Compared with the roasting-acid leaching method,the two-ore acid addition method reduces energy consumption by over 500 kW·h per ton of manganese sulfate while also lowering auxiliary material usage.The critical factors in the purification process are cost control and solution quali-ty.The fluoride precipitation method can reduce the content of impurities such as Ca,Mg,and F to below 20 g per ton of manganese sulfate.For the crystallization process,energy consumption is the key parame-ter.The high-temperature and high-pressure crystallization method consumes 0.4~0.6 tons of steam per ton of manganese sulfate.Therefore,the currently optimal technical route for high-purity manganese sul-fate production is two-ore acid leaching→fluoride precipitation purification→high-temperature and high-pressure crystallization.This article can provide references for enterprises in selecting suitable production processes and designing manufacturing procedures for high-purity manganese sulfate.