高钛铝土矿磁选分离特性及含铝尾矿溶出性能研究
|
摘要
研究某高钛铝土矿在不同磁场强度、磁选液固比及磁选时间条件下钛(铁)和铝的分离特性,并研究了磁选后含铝尾矿在不同溶出条件下的溶出特性。结果表明,在磁场强度19.5kA/m、磁选液固比5∶1、磁选时间4min时,铝回收率为75.19%,钛、铁脱除率分别为57.45%和73.95%。含铝尾矿在溶出时间45min、石灰添加量2%、碱浓度180g/L时,氧化铝实际溶出率为80.95%。磁选工艺能较好地实现高钛铝土矿中钛(铁)和铝的分离,且分离后含铝尾矿具有较好溶出特性。
Separation characteristics of titanium(iron)and aluminum of high titanium bauxite under different magnetic field intensity,ratio of liquid to solid(L/S)of magnetic separation,and magnetic separation time were studied.Dissolution properties of aluminum-bearing tailings were investigated.The results show that aluminum recovery rate is 75.19%,removal rate of titanium and iron is 57.45% and 73.95% respectively under the conditions including magnetic field intensity of 19.5 kA/m,L/S of magnetic separation of 5∶1,and magnetic separation time of 4 min.Actual alumina dissolution rate of aluminum-bearing tailings is 80.95% under the conditions including dissolution time of 45 min,lime dosage of 2%,and alkali concentration of 180 g/L.Separation of titanium(iron)and aluminum in high titanium bauxite is achieved by magnetic separation process,and aluminum-bearing tailings after separation have better dissolution characteristics.
Separation characteristics of titanium(iron)and aluminum of high titanium bauxite under different magnetic field intensity,ratio of liquid to solid(L/S)of magnetic separation,and magnetic separation time were studied.Dissolution properties of aluminum-bearing tailings were investigated.The results show that aluminum recovery rate is 75.19%,removal rate of titanium and iron is 57.45% and 73.95% respectively under the conditions including magnetic field intensity of 19.5 kA/m,L/S of magnetic separation of 5∶1,and magnetic separation time of 4 min.Actual alumina dissolution rate of aluminum-bearing tailings is 80.95% under the conditions including dissolution time of 45 min,lime dosage of 2%,and alkali concentration of 180 g/L.Separation of titanium(iron)and aluminum in high titanium bauxite is achieved by magnetic separation process,and aluminum-bearing tailings after separation have better dissolution characteristics.
引文
[1]张伦和.铝土矿资源合理开发与利用[J].轻金属,2012(2)∶3-11.
[2]罗建川.基于铝土矿资源全球化的我国铝工业发展战略研究[D].长沙:中南大学,2006.
[3]李续平,周在毅.氧化铝蒸发节能降耗途径的探讨[J].轻金属,2006(8):37-39.
[4]顾松青.我国的铝土矿资源和高效低耗的氧化铝生产技术[J].中国有色金属学报,2004,14(增刊1):91-97.
[5]马海珠.氧化铝生产过程结疤防治的应用基础研究[D].贵阳:贵州大学,2015.
[6]付高峰,田福泉,权昆.中低品位铝土矿石灰拜耳法溶出的研究[J].东北大学学报(自然科学版),2005,26(11):76-78.
[7]尹中林,顾松青.石灰添加方式对一水硬铝石型铝土矿浆预热过程结疤的影响[J].中国有色金属学报,2001,11(5):910-914.
[8]郑晓倩,金会心.一水硬铝石型高钛铝土矿中钛的赋存状态研究[J].矿产综合利用,2017(5):63-65.
[9]REDDY B R,MISHRA S K,BANERJEE G N.Kinetics of leaching of a gibbsitic bauxite with hydrochloric acid[J].Hydrometallurgy,1999,51(1):131-138.
[10]肖冲,金会心,郑晓倩.高压水化法下高钛铝土矿的溶出性能[J].有色金属(冶炼部分),2018(1):25-28
[11]史志新.某钒钛磁铁矿尾矿中铁、钛矿物的矿物学研究[J].有色金属(选矿部分),2017(3):1-6.
[12]邹勇.某三水型高钛铝土矿的溶出性能试验研究[J].湿法冶金,2013(4):248-251.
[13]郑晓倩,金会心,魏国令.高钛铝土矿的高压水化法溶出试验研究[J].有色金属(冶炼部分),2017(4):25-29.
[2]罗建川.基于铝土矿资源全球化的我国铝工业发展战略研究[D].长沙:中南大学,2006.
[3]李续平,周在毅.氧化铝蒸发节能降耗途径的探讨[J].轻金属,2006(8):37-39.
[4]顾松青.我国的铝土矿资源和高效低耗的氧化铝生产技术[J].中国有色金属学报,2004,14(增刊1):91-97.
[5]马海珠.氧化铝生产过程结疤防治的应用基础研究[D].贵阳:贵州大学,2015.
[6]付高峰,田福泉,权昆.中低品位铝土矿石灰拜耳法溶出的研究[J].东北大学学报(自然科学版),2005,26(11):76-78.
[7]尹中林,顾松青.石灰添加方式对一水硬铝石型铝土矿浆预热过程结疤的影响[J].中国有色金属学报,2001,11(5):910-914.
[8]郑晓倩,金会心.一水硬铝石型高钛铝土矿中钛的赋存状态研究[J].矿产综合利用,2017(5):63-65.
[9]REDDY B R,MISHRA S K,BANERJEE G N.Kinetics of leaching of a gibbsitic bauxite with hydrochloric acid[J].Hydrometallurgy,1999,51(1):131-138.
[10]肖冲,金会心,郑晓倩.高压水化法下高钛铝土矿的溶出性能[J].有色金属(冶炼部分),2018(1):25-28
[11]史志新.某钒钛磁铁矿尾矿中铁、钛矿物的矿物学研究[J].有色金属(选矿部分),2017(3):1-6.
[12]邹勇.某三水型高钛铝土矿的溶出性能试验研究[J].湿法冶金,2013(4):248-251.
[13]郑晓倩,金会心,魏国令.高钛铝土矿的高压水化法溶出试验研究[J].有色金属(冶炼部分),2017(4):25-29.