逆流分选柱预富集细粒氧化锑尾矿的试验研究
|
摘要
针对当前氧化锑尾矿摇床作业处理量小、操作不稳定及回收效率低的问题,设计了细粒氧化锑尾矿预富集设备——逆流分选柱,高效抛除了低品位脉石矿物,降低了后续摇床作业的处理量,提高了摇床作业给矿品位。通过条件和正交试验研究了给矿量、底流流量、上升水流量等主要参数对氧化锑尾矿预富集效果的影响,获得了该设备预选氧化锑尾矿时的最佳分选条件,结果表明:当给矿Sb品位为0.75%时,在给矿流量300 mL/min、底流流量30 mL/min、上升水流量133 mL/min的优化条件下,一次分选可以得到Sb品位2.54%、回收率73.91%的锑粗精矿。流程对比试验结果表明,该设备在抛除近80%尾矿的同时,使最终精矿品位和综合回收率相较于单独使用摇床均有所提高。
Shaking table, a device used currently to process antimony oxide tailings, possesses defects such as low treatment capacity, unstable operation and low recovery. Hence, reflux classifier(RC), a novel pre-enrichment facility for fine antimony oxide, was developed. As low-grade tailings can be efficiently discarded by RC, the throughput for the succeeding shaking table operation can be reduced and its feeding grade can be increased. Conditional and orthogonal experiments were carried out to investigate the influence of feed flow rate, underflow and overflow rate on the pre-enrichment effect of antimony oxide tailings, and the optimal processing parameters were determined. The results showed that, for the ore with the feeding grading 0.75% Sb, after processed in RC for one stage with the optimized parameters such as feed flow, underflow and overflow rate at 300 mL/min, 30 mL/min and 133 mL/min, respectively, an antimony rough concentrate grading 2.54% Sb at 73.91% recovery was obtained. Moreover, the comparison test results showed that, using RC, nearly 80% tailings were discarded, and the final grade and comprehensive recovery of concentrate were improved compared with the solely usage of shaking table.
Shaking table, a device used currently to process antimony oxide tailings, possesses defects such as low treatment capacity, unstable operation and low recovery. Hence, reflux classifier(RC), a novel pre-enrichment facility for fine antimony oxide, was developed. As low-grade tailings can be efficiently discarded by RC, the throughput for the succeeding shaking table operation can be reduced and its feeding grade can be increased. Conditional and orthogonal experiments were carried out to investigate the influence of feed flow rate, underflow and overflow rate on the pre-enrichment effect of antimony oxide tailings, and the optimal processing parameters were determined. The results showed that, for the ore with the feeding grading 0.75% Sb, after processed in RC for one stage with the optimized parameters such as feed flow, underflow and overflow rate at 300 mL/min, 30 mL/min and 133 mL/min, respectively, an antimony rough concentrate grading 2.54% Sb at 73.91% recovery was obtained. Moreover, the comparison test results showed that, using RC, nearly 80% tailings were discarded, and the final grade and comprehensive recovery of concentrate were improved compared with the solely usage of shaking table.
引文
[1] 王永磊,陈毓川,王等红,等.中国锑矿主要矿集区及其资源潜力探讨[J].中国地质,2013(5):1366-1378.
[2] 周艳晶,李建武,王高尚,等.全球锑矿资源分布及开发现状[J].中国矿业,2014(10):13-16.
[3] 曹烨,刘四清,刘玫华,等.锑的选矿现状及发展趋势[J].现代矿业,2010(1):28-30.
[4] 郑剑洪,谷新建,陈代雄.东安锑矿难选氧化锑矿选矿试验研究[J].矿业工程研究,2009(2):68-70.
[5] 陈代雄.伊朗某难选氧化锑矿选矿新工艺研究[J].有色金属(选矿部分),2007(2):5-9.
[6] 王进明,王毓华,于世磊,等.十二烷基硫酸钠对黄锑矿浮选行为的影响及作用机理[J].中南大学学报(自然科学版),2013(10):3955-3962.
[7] 王毓华,卢东方,曾繁森.矿物分选装置:中国,205761687U[P].2016-12-07.
[8] 曾繁森,王毓华,卢东方,等.自制逆流分选柱重选预富集红土镍矿的试验研究及流场模拟[J].矿冶工程,2017,37(1):52-59.
[9] Galvin K P,Nguyentranlam G.Influence of parallel inclined plates in a liquid fluidized bed system[J].Chemical Engineering Science,2002,57(7):1231-1234.
[10] Dorooddchi E,Fletcher D F,Galvin K P.Influence of inclined plates on the expansion behavior of particulate suspensions in a liquid fluidized bed[J].Chemical Engineering Science,2004,59(17):3559-3567.
[2] 周艳晶,李建武,王高尚,等.全球锑矿资源分布及开发现状[J].中国矿业,2014(10):13-16.
[3] 曹烨,刘四清,刘玫华,等.锑的选矿现状及发展趋势[J].现代矿业,2010(1):28-30.
[4] 郑剑洪,谷新建,陈代雄.东安锑矿难选氧化锑矿选矿试验研究[J].矿业工程研究,2009(2):68-70.
[5] 陈代雄.伊朗某难选氧化锑矿选矿新工艺研究[J].有色金属(选矿部分),2007(2):5-9.
[6] 王进明,王毓华,于世磊,等.十二烷基硫酸钠对黄锑矿浮选行为的影响及作用机理[J].中南大学学报(自然科学版),2013(10):3955-3962.
[7] 王毓华,卢东方,曾繁森.矿物分选装置:中国,205761687U[P].2016-12-07.
[8] 曾繁森,王毓华,卢东方,等.自制逆流分选柱重选预富集红土镍矿的试验研究及流场模拟[J].矿冶工程,2017,37(1):52-59.
[9] Galvin K P,Nguyentranlam G.Influence of parallel inclined plates in a liquid fluidized bed system[J].Chemical Engineering Science,2002,57(7):1231-1234.
[10] Dorooddchi E,Fletcher D F,Galvin K P.Influence of inclined plates on the expansion behavior of particulate suspensions in a liquid fluidized bed[J].Chemical Engineering Science,2004,59(17):3559-3567.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |