摘要
采用焙烧⁃氨浸工艺对重庆城口地区的高磷菱锰矿进行脱磷提锰研究,在热力学分析的基础上,考察了焙烧温度、焙烧时间对高磷菱锰矿分解率、活性以及锰浸出率的影响,并综合分析它们的交互作用,得到最佳焙烧工艺条件为:焙烧温度650℃,焙烧时间100 min。所得焙砂用16 mol/L氨水常温浸出60 min,锰浸出率为73.89%;浸出液蒸发后得到的MnCO3产品中锰品位43.51%、磷含量0.012%。
Experiments on the dephosphorization and manganese extraction for high⁃phosphorus rhodochrosite in Chongqing Chengkou district were carried out by adopting a roasting and ammonia leaching process.Based on the thermodynamic analysis,the effects of roasting temperature and roasting time on the decomposition rate,activity and manganese leaching rate of high⁃phosphorus rhodochrosite were investigated,and interactions among these factors were also comprehensively analyzed.The optimal roasting processing conditions were finally determined.The high⁃phosphorus rhodochrosite is subjected to a roasting process at 650℃for 100 min,and then the obtained calcine is leached for 60 min with 16 mol/L ammonia water at room temperature,resulting in the manganese leaching rate at 73.89%.After the evaporation of the leachate,the MnCO3 product can be obtained with manganese grade of 43.51%and the phosphorus content of 0.012%.
作者
王杨
伍成波
岳林
毛宁
黄云
张高鹏
WANG Yang;WU Cheng-bo;YUE Lin;MAO Ning;HUANG Yun;ZHANG Gao-peng(School of Materials Science and Engineering,Chongqing University,Chongqing 400044,China)
出处
《矿冶工程》
CAS
CSCD
北大核心
2020年第5期100-103,共4页
Mining and Metallurgical Engineering
关键词
高磷菱锰矿
焙烧
氨浸
浸出率
脱磷
high⁃phosphorus rhodochrosite
roasting
ammonia leaching
leaching rate
dephosphorization
