摘要
将硫化锌精矿与软锰矿同时浸出,得到 Zn 和 Mn 溶液,锌和锰的浸出率分别97%和95%.将该溶液用黄钾铁矾法除去溶液中的铁,经KMnO_4和(NH_4)_2S_2O_8除 Mn,沉淀得纯 ZnO。最后用 NH_4HCO_3沉淀 MnCO_3,经过干燥和锻烧制得化学 MnO_2.
Simultaneous acid leach of ZnS concertrata and Pyrolusite ore is used to obtain Zn and Mn Solution,leach rates of Zn and Mn are up to 97% and 95%。after iron re- moval by Jarosite methode the solution is sent to purify the Mn by KMnO_4 and (NH_4)_2S_2O_8,then to precipitate pure ZnO。Finally MnCO_3 is precipitated by N4H_4HCO_3,Obtained MnCO_3 is routed to dry and calcine for manufacturing chemical MnO_2
出处
《中国锰业》
北大核心
1993年第6期26-30,共5页
China Manganese Industry
关键词
活性氧化锌
化学二氧化锰
浸出
Hydrometallurgy
Active zinc qxide
Chemical manganese dioxide Leaching
