东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (12): 1750-1753.DOI: 10.12068/j.issn.1005-3026.2014.12.018

• 材料与冶金 • 上一篇    下一篇

表面活性剂吐温80对钴精矿生物浸出的作用

宋言， 杨洪英， 佟琳琳   

  1. (东北大学 材料与冶金学院， 辽宁 沈阳110819)
  • 收稿日期:2014-02-21 修回日期:2014-02-21 出版日期:2014-12-15 发布日期:2014-09-12
  • 通讯作者: 宋言
  • 作者简介:宋言(1989-)，男，河北邢台人，东北大学博士研究生； 杨洪英(1960-)，女，河北石家庄人，东北大学教授，博士生导师.
  • 基金资助:
    国家高技术研究发展计划项目(2012AA061502)； 国家自然科学基金资助项目(51174062，51374066，51304047)； 中央高校基本科研业务费专项资金资助项目(N120602006，N110302002，N110602005).

Effects of Surfactant Tween 80 on the Bio-Leaching of Cobalt Concentrate

SONG Yan， YANG Hong-ying， TONG Lin-lin   

  1. School of Materials & Metallurgy， Northeastern University， Shenyang 110819， China.
  • Received:2014-02-21 Revised:2014-02-21 Online:2014-12-15 Published:2014-09-12
  • Contact: YANG Hong-ying
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摘要： 研究矿物为赞比亚某钴精矿，浸矿菌种为ZY101.该菌种经长期驯化耐钴性良好，在含钴30g·L-1的环境中正常生长.在浸出过程中，通过测量矿浆的pH值、电位值、亚铁离子浓度、菌浓度以及钴的浸出率来考察吐温80对浸出效果的影响.实验结果表明:在浸出过程中，添加表面活性剂吐温80可以加快浸出速率，提高钴的浸出率，其最佳用量为0.01%(体积分数)，此时，钴的浸出率达到93.25%.与未加吐温80的浸出体系相比，钴的浸出率提高了62%.在赞比亚钴精矿生物浸出过程中，添加吐温80催化效果良好.

关键词: 钴精矿, 生物浸出, 表面活性剂, 吐温80, 浸矿细菌

Abstract: The cobalt concentrate from Zambia were studied. Bacteria used in the leaching was ZY101， a kind of mixed bacteria which can grow normally in the system containing 30 g·L-1 cobalt after a long time of domestication. During leaching of cobalt concentrate， the effects of surfactant Tween 80 were evaluated by measuring the pH value of solution， the electric potential value of solution， the density of Fe2+， the density of bacteria cell in solution and the rate of cobalt leached. The results showed that Tween 80 can improve the leaching of the cobalt concentrate and the optimal dosage is 0.01%(volume concentration). After leaching for 15 days， the rate of cobalt leached reaches 93.25%. Compared with the system of bioleaching solution without Tween 80， the rate of cobalt leached increases by 62%. During the bio-leaching of Zambian cobalt concentrate， the addition of Tween 80 exhibits good catalytic effect.

Key words: cobalt concentrate, bio-leaching solution, surfactant, Tween 80, bioleaching bacteria

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