含硫碳酸锰矿与软锰矿新两矿法联合浸出工艺研究

摘要

To reduce hydrogen sulfide gas generated by traditional hydrometallurgical leaching of sulphureous manganese carbonate ore, a novel two⁃ore method, namely, a combined leaching technology of manganese carbonate and pyrolusite was introduced. These two low⁃grade manganese ores can be thoroughly leached with mass ratio of two ores at 2∶1, sulphuric acid concentration of 0.5 mol/L, pulp density at 75 g/L, leaching time of 1 h and agitation rate of 300 r/min, leading to the hydrogen sulfide output reduced to 2.14 mg per gram of manganese carbonate.%针对含硫碳酸锰矿湿法浸出过程中产生大量硫化氢废气的问题，采用含硫碳酸锰矿和软锰矿新两矿法联合浸出工艺。较优工艺浸出条件为：两矿比2∶1，硫酸浓度0．5 mol／L，矿浆浓度75 g／L，浸出时间1 h，搅拌速率300 r／min。在此条件下，锰可以完全浸出，硫化氢产生量为2．14 mg／g。