新疆某低品位铍矿微波预处理浸出工艺研究
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摘要
针对氧化铍含量为0.515%的某低品位铍矿,采用微波加热对矿石进行预处理,研究了微波预处理及振荡浸出工艺。结果表明:在微波预处理温度230℃、处理时间4 h,铍矿石和浓硫酸质量比1∶1.4、振荡浸出时间4 h条件下,铍浸出率达到96.7%。该工艺为低品位铍矿资源的开发利用提供了新思路。
As for a kind of low-grade beryllium ores containing 0.515% beryllia from Xinjiang,a process of microwave heating was adopted for pretreatment in the test,and the influences of factors,including temperature and time for microwave heating,concentration of sulfuric acid and time for oscillation leaching,on beryllium leaching rate were investigated. Results show that,after pretreatment by microwave heating at 230 ℃ for 4 h,with beryllium ore and concentrated sulfuric acid in a mass ratio of 1 ∶ 1. 4,oscillation leaching for 4 h,the beryllium leaching rate reaches96.7%. It is concluded that such processing technique can be taken as a new approach for the exploitation and utilization of such low-grade beryllium ore.
As for a kind of low-grade beryllium ores containing 0.515% beryllia from Xinjiang,a process of microwave heating was adopted for pretreatment in the test,and the influences of factors,including temperature and time for microwave heating,concentration of sulfuric acid and time for oscillation leaching,on beryllium leaching rate were investigated. Results show that,after pretreatment by microwave heating at 230 ℃ for 4 h,with beryllium ore and concentrated sulfuric acid in a mass ratio of 1 ∶ 1. 4,oscillation leaching for 4 h,the beryllium leaching rate reaches96.7%. It is concluded that such processing technique can be taken as a new approach for the exploitation and utilization of such low-grade beryllium ore.
引文
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[2]张友寿,秦有钧,吴东周,等.铍和含铍材料的性能及应用[J].焊接学报,2001,22(6):92-96.
[3]符剑刚,蒋进光,李爱民,等.从含铍矿石中提取铍的研究现状[J].稀有金属与硬质合金,2009,37(1):40-44.
[4]成泉辉.非绿柱石铍矿生产供应氧化铍的工艺研究与实践[J].中国有色冶金,2006(6):25-27.
[5]王清良,李中,李乾,等.铍精矿浸出液中铍的回收工艺试验[J].稀有金属,2016,40(1):71-76.
[6]刘勇,刘牡丹,刘珍珍,等.低品位铍精矿冶金处理新工艺的实验研究[J].稀有金属与硬质合金,2014,42(2):13-15.
[7]Copenhafer W C.Hydrometallurgical process for the production of beryllium:US,US 4729881A[P].1988.
[8]李卫,叶红齐,刘振国.硫酸法处理含氟铍矿石的工艺改进研究[J].湖南冶金,2003,31(4):32-35.
[9]新疆有色金属网.新疆特大型铍矿床已探明储量5.2万吨[J].新疆有色金属,2014(1):110.
[10]王清良,李中,李乾,等.低品位铍矿浸出工艺探索试验[J].矿冶工程,2016,36(2):88-95.
[11]谷晋川.难选冶金矿石微波预处理研究[J].湿法冶金,1998(3):50-52.
[12]Nekoovaght P,Hassani F.The influence of microwave radiation on hard rocks as in microwave assisted rock breakage applications[C]∥Rock Engineering and Rock Mechanics:Structures in and on Rock Masses.2014.
[13]崔礼生,韩跃新.微波技术在矿业中的应用[J].有色矿冶,2005,21(S1):54-57.
[14]Jones D A,Kingman S W,Whittles D N,et al.The influence of microwave energy delivery method on strength reduction in ore samples[J].Chemical Engineering&Processing,2007,46(4):291-299.
[15]赵俊蔚,赵国惠,邓晔,等.微波加热在矿冶方面的应用研究现状[J].黄金,2008,29(12):39-43.