摘要
对低品位菱锰矿浸出工艺条件进行了研究,发现还原剂(绿矾、煤粉及双氧水)、硫酸、液固比、pH值、浸出温度及时间等因素对锰浸出率存在重要影响。通过单因素分析试验,得出最优工艺条件:当矿酸比为1∶0.324、温度为90℃、液固比为6:1、pH值为4.50、浸出时间为5h时,锰的实际浸出率可达80%以上。该工艺具有能源消耗低,生产成本低,锰的回收率高等优点。
The process of preparing manganese from low-grade rhodochrosite was studied and the result showed that the key factors such as reducing agents （the Green alum,coal and hydrogen peroxide）, sulfuric acid ,liquid-solid ratio , pH ,leaching temperature and time have important impacts on leaching manganese rate. The optimal leaching conditions were obtained by single factor in experimentation：the actual manganese leaching rate can reach more than 80% under the condiction of 1：0.324 mine-acid ratio,90 ℃ temperature,6 ： 1 liquid-solid ratio,4.50 pH and 5 h reaction time. This process has many merits of the low energy consumpted, the low production cost, high recovery rate of manganese.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2009年第8期1104-1107,共4页
Chemical Research and Application
关键词
菱锰矿
锰浸出率
绿矾
煤粉
双氧水
Rhodochrosite
leaching manganese rate
green alum
goal
gydrogen peroxide
