软锰矿湿法生产硫酸锰的研究

Study on a Wet Process to Produce Manganese Sulfate from Pyrolusite

本文试验研究了用软锰矿和硫铁矿湿法生产硫酸锰的生产工艺。当反应温度大于95℃.时间2.5小时,原料配比为1:0,71:0.68,最终pH值控制在5.4左右,锰浸出率在90％以上。溶液经净化、沉钙,产品质量符合GB1622-86标准。100公斤级扩大试验验证了小试验,结果可靠,产品质量稳定。同高温还原焙烧法比较,该法具有流程简单,原料消耗低的特点。

The leaching process was researched to produce manganese sulfate from pyrite and pyrolusite, When the reaction was proceeded under the conditions: temp.>95℃ time 2.5h, ratio of raw material 1:0.71:0.68 (pyrolusite: pyrite: sulfuric acid)and when pH was controlled about 5.4, the leaching out rate of manganese can get to 90％, Through purification and calcium depositing, the quality of the products was conform to GB1662-82, Experiments(100kg grade)were carried out.It proved that the products were good and stable in quality.In comparison with the high-temperature reduced roast process, tills method is simple and lower in comsuption.