用硫酸铵焙烧—硫酸浸出工艺从低品位锰矿石中回收锰试验研究
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摘要
基于硫酸铵高温热解为硫酸氢铵和氨气,以及硫酸氢铵可将矿石中的锰转化为硫酸锰的特性,研究了采用硫酸铵焙烧—硫酸浸出工艺从低品位锰矿石中回收锰,考察了硫酸铵加入量、焙烧温度、焙烧时间、浸出剂硫酸浓度、浸出温度、浸出时间等条件对锰浸出率的影响。结果表明,在硫酸铵与锰物质的量比为15、温度380℃下对矿石焙烧150 min,然后用浓度为0.04 mol/L的硫酸在40℃下浸出50 min,锰浸出率达95.99%,浸出效果较好。
Based on the high temperature pyrolysis of ammonium sulfate into ammonium bisulfate and ammonia,and the manganese of ore can be converted to manganese sulfate by ammonium bisulfate.Manganese is recovered from low-grade manganese ore by calcination-leaching process using ammonium sulfate.The effect of technological conditions including ammonium sulfate addition,calcination temperature,calcination time,sulfuric acid concentration,leaching temperature and leaching time on the manganese leaching rate are investigated.The results show that,95.99% manganese are recovered under the conditions of 15 molar ratio of ammonium sulfate to manganese,roasting 150 min at 380 ℃,and leaching 50 min at 40 ℃ with 0.04 mol/L sulfuric acid.
Based on the high temperature pyrolysis of ammonium sulfate into ammonium bisulfate and ammonia,and the manganese of ore can be converted to manganese sulfate by ammonium bisulfate.Manganese is recovered from low-grade manganese ore by calcination-leaching process using ammonium sulfate.The effect of technological conditions including ammonium sulfate addition,calcination temperature,calcination time,sulfuric acid concentration,leaching temperature and leaching time on the manganese leaching rate are investigated.The results show that,95.99% manganese are recovered under the conditions of 15 molar ratio of ammonium sulfate to manganese,roasting 150 min at 380 ℃,and leaching 50 min at 40 ℃ with 0.04 mol/L sulfuric acid.
引文
[1] 龙炳清,邓国海,陈建文.碳酸锰矿的回收方法:201310736435.8[P].2014-04-30.
[2] 黄琨,张亚辉,黎贵亮,等.锰矿资源及化学选矿研究现状[J].湿法冶金,2013,32(4):207-213.
[3] 刘晓波.低品位菱锰矿浸取及除杂的实验研究[D].重庆:重庆大学,2008.
[4] YOU Z X,LI G H,ZHANG Y B,et al.Extraction of man ganese from iron rich MnO2 ores via selective sulfation roasting with SO2 followed by water leaching[J].Hydrometallurgy,2015,156:225-231.
[5] ZHANG Y B,YOU Z X,LI G H,et al.Manganese extraction by sulfur-based reduction roasting-acid leaching from low-grade manganese oxide ores[J].Hydrometallurgy,2013,133:126-132.
[6] LI J H,CHEN Z F,SHEN B P,et al.The extraction of valuable metals and phase transformation and formation mechanism in roasting-water leaching process of laterite with ammonium sulfate[J].Journal of Cleaner Production,2017,140:1148-1155.
[7] 朱国才,李赋屏,肖明贵.采用硫酸铵焙烧方法从低品位碳酸锰矿中富集回收锰[J].桂林工学院学报,2005,25(4):534-537.
[8] 汪顺才,王方汉,曹维勤.废弃尾矿中碳酸锰矿铵盐焙烧富集工艺研究[J].金属矿山,2008(3):144-146.
[9] 靳晓珠,杨仲平,陈祝炳,等.低品位碳酸锰矿铵盐焙烧富锰工艺研究[J].中国锰业,2006,24(1):28-29.
[10] 杨仲平,靳晓珠,朱国才.铵盐焙烧法处理低品位锰矿的工艺研究[J].中国锰业,2006,24(3):12-14.
[11] FAN Y Z,CAO F H.Thermal decomposition kinetics of ammonium sulfate[J].Journal of Chemical Engineering of Chinese Universities,2011,25(2):341-346.
[12] PETKOV I.Extraction of manganese from carbonate ore nithsulfur dioxide[J].God Vissh Khim Tekhno l Inst,1977,23(3):8-31.
[13] 中华人民共和国国家质量监督检验检疫总局.锰矿石锰含量的测定电位滴定法和硫酸亚铁铵滴定法:GB/T 1506—2002[S].北京:中国标准出版社,2002.
[14] LOU Z,XIONG Y,FENG X,et al.Study on the roasting and leaching behavior of high-sulfur bauxite using ammonium bisulfate[J].Hydrometallurgy,2016,165:306-311.
[15] SHI J F,WANG Z X,HU Q Y,et al.Recovery of nickel and cobalt from nickel laterite ore by sulfation roasting method using ammonium bisulfate[J].Chinese Journal of Nonferrous Metals,2013,23(2):510-515.
[2] 黄琨,张亚辉,黎贵亮,等.锰矿资源及化学选矿研究现状[J].湿法冶金,2013,32(4):207-213.
[3] 刘晓波.低品位菱锰矿浸取及除杂的实验研究[D].重庆:重庆大学,2008.
[4] YOU Z X,LI G H,ZHANG Y B,et al.Extraction of man ganese from iron rich MnO2 ores via selective sulfation roasting with SO2 followed by water leaching[J].Hydrometallurgy,2015,156:225-231.
[5] ZHANG Y B,YOU Z X,LI G H,et al.Manganese extraction by sulfur-based reduction roasting-acid leaching from low-grade manganese oxide ores[J].Hydrometallurgy,2013,133:126-132.
[6] LI J H,CHEN Z F,SHEN B P,et al.The extraction of valuable metals and phase transformation and formation mechanism in roasting-water leaching process of laterite with ammonium sulfate[J].Journal of Cleaner Production,2017,140:1148-1155.
[7] 朱国才,李赋屏,肖明贵.采用硫酸铵焙烧方法从低品位碳酸锰矿中富集回收锰[J].桂林工学院学报,2005,25(4):534-537.
[8] 汪顺才,王方汉,曹维勤.废弃尾矿中碳酸锰矿铵盐焙烧富集工艺研究[J].金属矿山,2008(3):144-146.
[9] 靳晓珠,杨仲平,陈祝炳,等.低品位碳酸锰矿铵盐焙烧富锰工艺研究[J].中国锰业,2006,24(1):28-29.
[10] 杨仲平,靳晓珠,朱国才.铵盐焙烧法处理低品位锰矿的工艺研究[J].中国锰业,2006,24(3):12-14.
[11] FAN Y Z,CAO F H.Thermal decomposition kinetics of ammonium sulfate[J].Journal of Chemical Engineering of Chinese Universities,2011,25(2):341-346.
[12] PETKOV I.Extraction of manganese from carbonate ore nithsulfur dioxide[J].God Vissh Khim Tekhno l Inst,1977,23(3):8-31.
[13] 中华人民共和国国家质量监督检验检疫总局.锰矿石锰含量的测定电位滴定法和硫酸亚铁铵滴定法:GB/T 1506—2002[S].北京:中国标准出版社,2002.
[14] LOU Z,XIONG Y,FENG X,et al.Study on the roasting and leaching behavior of high-sulfur bauxite using ammonium bisulfate[J].Hydrometallurgy,2016,165:306-311.
[15] SHI J F,WANG Z X,HU Q Y,et al.Recovery of nickel and cobalt from nickel laterite ore by sulfation roasting method using ammonium bisulfate[J].Chinese Journal of Nonferrous Metals,2013,23(2):510-515.