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  • CN 62-1112/TF 
  • ISSN 1005-2518 
  • 创刊于1988年
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冶炼技术与装备研发

生物提金氧化液中铁的选择性沉淀

  • 段敏静 ,
  • 梁长利 ,
  • 许宝泉 ,
  • 陈陵康
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  • 1.江西理工大学建筑与测绘学院,江西  赣州   341000;
    2.江西理工大学资源与环境工程学院,江西  赣州   341000
段敏静(1980-),女,陕西西安人,工程师,从事环境保护研究工作。lzl951179@163.com

收稿日期: 2017-05-09

  修回日期: 2017-07-26

  网络出版日期: 2018-05-18

基金资助

江西省重点研发计划重点项目“高品质小球藻异养发酵—光激励诱导自养耦合养殖技术”(编号:20171ACF60011)和“螺旋藻中藻蓝蛋白产业化生产技术”(编号:20171ACF60008)联合资助

Selective Precipitation of Iron from Bio-oxidation Liquid of Gold Extraction

  • DUAN Minjing ,
  • LIANG Changli ,
  • XU Baoquan ,
  • CHEN Lingkang
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  • 1.School of Architectural and Surveying & Mapping Engineering,Jiangxi University of Science and Technology,Ganzhou    341000,Jiangxi,China;
    2.Faculty of Resources and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou 341000    Jiangxi,China

Received date: 2017-05-09

  Revised date: 2017-07-26

  Online published: 2018-05-18

摘要

以生物提金氧化液为研究对象,采用磷酸氢二铵((NH4)2HPO4)作为沉淀剂,研究了pH值、温度、加料方式、(NH4)2HPO4浓度和沉淀反应时间对生物提金氧化液中铁的选择性沉淀的影响。采用同时流加生物提金氧化液和0.2 g/mL(NH4)2HPO4溶液的方式,控制(NH4)2HPO4流速将沉淀体系的pH值调节为2.0,在60 ℃条件下搅拌反应2.5 h,铁沉淀率达到95.2%,砷存留率为93.6%,XRD图谱证实了铁沉淀主要是磷酸铁(FePO4)和三聚磷酸二氢铁(FeH2P3O10),实现了生物提金氧化液中铁的选择性沉淀,为从生物提金氧化液中综合回收铁、砷等有价成分提供了理论指导。

本文引用格式

段敏静 , 梁长利 , 许宝泉 , 陈陵康 . 生物提金氧化液中铁的选择性沉淀[J]. 黄金科学技术, 2017 , 25(6) : 121 -126 . DOI: 10.11872/j.issn.1005-2518.2017.06.121

Abstract

The effect of pH value,temperature,diammonium hydrogen phosphate concentration,feeding ways and precipitate time on the selective precipitation of iron from bio-oxidation liquid of gold ore was studied,by taking bio-oxidation liquid of gold extraction as the research object and diammonium hydrogen phosphate as precipitant.The precipitation rate of iron reached 95.2% and the residual rate of arsenic in the bio-oxidation liquid was 93.6% under the conditions:flow the bio-oxidation liquid and 0.2 g/mL diammonium hydrogen phosphate at the same time,and adjust the pH value to 2.0 by adjust the flow rate of diammonium hydrogen phosphate,precipitate at 60 ℃ for 2.5 hours.XRD spectrum confirmed the precipitation of iron was mainly composed of ferric phosphate and ferrous dihydrogen phosphate.The results confirmed the selective precipitation of iron from bio-oxidation liquid,which can provide theoretic guidance to recovery valuable components such as iron and arsenic from bio-oxidation liquid.

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