低品位铝土矿预富集铝镓的研究
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摘要
采用正交试验研究某脱硫铝精矿的溶出性能,并探索从拜耳法母液中提取铝和镓富集物。结果表明,当晶种分解时间为72h,铝酸钠溶液中的Al_2O_3分解率高达86.84%,获得的Al(OH)_3产品中氧化铝含量大于62%。当吸附时间为2h,吸附温度为45℃的条件下,四级吸附后,镓的总吸附率为99.19%,再通过盐酸洗脱、中和沉淀和焙烧工艺后,镓的总回收率为82.44%,获得的富集物中Ga_2O_3含量为32.45%,可用于进一步制备高纯氧化镓产品。
Digestion performance of one low grade bauxite was developed by orthogonal,and extraction of aluminum and gallium from Bayer liquor was explored.The results show that decomposition rate of Al_2O_3 in sodium aluminate solution is 86.84% with alumina content of 62% above after seed precipitation of 72 h.After four-stage adsorption,total adsorption rate of gallium is 99.19% under the optimum conditions including adsorption time of 2 hand adsorption temperature of 45℃.Total recovery of gallium is 82.44%by hydrochloric acid elution,ammonia precipitation and roasting.The obtained concentrate Ga_2O_3 content of 32.45% can be used to produce high purity gallium oxide products.
Digestion performance of one low grade bauxite was developed by orthogonal,and extraction of aluminum and gallium from Bayer liquor was explored.The results show that decomposition rate of Al_2O_3 in sodium aluminate solution is 86.84% with alumina content of 62% above after seed precipitation of 72 h.After four-stage adsorption,total adsorption rate of gallium is 99.19% under the optimum conditions including adsorption time of 2 hand adsorption temperature of 45℃.Total recovery of gallium is 82.44%by hydrochloric acid elution,ammonia precipitation and roasting.The obtained concentrate Ga_2O_3 content of 32.45% can be used to produce high purity gallium oxide products.
引文
[1]李旺兴.氧化铝生产理论与工艺[M].长沙:中南大学出版社,2010:370-372.
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[3]李博,熊述清,刘述平,等.重庆某低品位铝土矿化学脱硅产物溶出氧化铝试验研究[J].湿法冶金,2013,32(6):379-381.
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[6]刘龙,李军旗,陈朝轶,等.高硫铝土矿优化溶出工艺研究[J].有色金属(冶炼部分),2016(2):23-27.
[7]狄永宁,谭靖,王会.贵州修文铝土矿拜耳法溶出氧化铝试验研究[J].湿法冶金,2011,30(3):222-225.
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[9]苏玉芹,刘晓玲,张佐光.大孔偕胺肟树脂的合成及其对镓的吸附性能[J].过程工程学报,2010,10(5):893-898.
[10]谢访友,郭朋成,王纪,等.用离子交换法从拜耳工艺溶液中提取镓的工业实践[J].湿法冶金,2001,20(2):66-71.
[2]邹勇,李军旗,陈朝轶,等.某三水型高钛铝土矿的溶出性能试验研究[J].湿法冶金,2013,32(4):248-251.
[3]李博,熊述清,刘述平,等.重庆某低品位铝土矿化学脱硅产物溶出氧化铝试验研究[J].湿法冶金,2013,32(6):379-381.
[4]LIU Z B,LI H X.Metallurgical process for valuable elements recovery from red mud-A review[J].Hydrometallurgy,2015,155:29-43.
[5]尹守义.从氧化铝生产的循环碱液中回收稼[J].有色金属(冶炼部分),1987(2):22-24.
[6]刘龙,李军旗,陈朝轶,等.高硫铝土矿优化溶出工艺研究[J].有色金属(冶炼部分),2016(2):23-27.
[7]狄永宁,谭靖,王会.贵州修文铝土矿拜耳法溶出氧化铝试验研究[J].湿法冶金,2011,30(3):222-225.
[8]翟秀静,吕子剑.镓冶金[M].北京:冶金工业出版社,2010:101-102.
[9]苏玉芹,刘晓玲,张佐光.大孔偕胺肟树脂的合成及其对镓的吸附性能[J].过程工程学报,2010,10(5):893-898.
[10]谢访友,郭朋成,王纪,等.用离子交换法从拜耳工艺溶液中提取镓的工业实践[J].湿法冶金,2001,20(2):66-71.