【摘要】 研究了铵盐焙烧法处理低品位碳酸锰矿的工艺条件,确定最佳条件为:矿石∶氯化铵=1∶1~1.2,400~450℃焙烧60~90 min。焙砂用60~90℃热水浸取10~20 min,液固比为5∶1~10∶1,在此条件下,锰浸出率>90%,浸出液经沉淀干燥后得到Mn>50%的锰精矿。更多还原

【Abstract】 A process of enriching manganese was investigated.The best conductions were obtained.It shows that when roasting the mixture of ore and NH4Cl（1∶1～1∶1.2） in muffle for 60～90 min at 400～450℃,and leaching the calcine with 60～90℃ hot water for 10～20 min（L:S=5∶1～10∶1）,the Mn recovery is higher than 90%.The Mn²⁺ can be precipitated by NH3 and CO2 released from roasting process.After filtering and drying,the manganese concentrate was prepared（Mn>50%）.更多还原