节点文献

高砷铜精矿浸出液制备砷酸铜及热力学研究

Research on the Thermodynamics and Preparation of Copper Arsenate from High Arsenic-bearing Copper Concentrate Leaching Liquor

  • 推荐 CAJ下载
  • PDF下载
  • 不支持迅雷等下载工具,请取消加速工具后下载。

【作者】 谢海云童雄陆建生刘中华庄故章

【Author】 XIE Hai-yun1,TONG Xiong1,LU Jian-sheng2,LIU Zhong-hua2,ZHUANG Gu-zhang1(1.Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650093,China;2.Faculty of Metarials and Metallurgical Engineering,Kunming University of Science and Technology,Kunming 650093,China)

【机构】 昆明理工大学国土资源工程学院昆明理工大学材料与冶金工程学院

【摘要】 高砷铜精矿浸出液中因含砷较高存在砷害问题,砷回收利用具有重要的意义。研究针对某高砷硫化铜精矿除杂后的浸出液,探讨了以砷酸铜形式综合利用砷的热力学及工艺参数。绘制了Cu-As-H2O系电位-pH图,进行了砷酸铜制备工艺过程的热力学分析,对净化后的某高砷硫化铜精矿浸出液,以氨水为中和剂,当pH=5.0~8.0,温度80~90℃时,制得了CuAs2O4、C4H6As6Cu4O16、Cu5As2O10.5H2O、Cu5As4O15.9H2O、Cu2AsO4OH.3H2O及Cu2AsO4OH 6种不同结构的砷酸铜,沉砷后溶液中砷含量为9.11~35.82 mg/L。

【Abstract】 The arsenic in the high-arsenic copper sulfide concentrate leaching liquor is harmful to the quality of copper and pollutes the environment so that it is crucially important for the comprehensive utilization of arsenic.The Eh-pH diagram of Cu-As-H2O system and the thermodynamic of copper arsenate preparation from leaching liquor after removing Fe3+ are investigated in the present study.The results of XRD analysis indicate that the forming process of copper arsenate is complicated and different molecular formulas are formed at a pH of 5.0~8.0 when the temperature is controlled at 80 ℃ to 90 ℃ with ammonia as neutralizer;And the molecular formulas of copper arsenate are CuAs2O4,Cu5As2O10·5H2O,C4H6As6Cu4O16,Cu5As4O15·9H2O,Cu2AsO4OH·3H2O and Cu2AsO4OH.Most of arsenic can be utilized in the form of copper arsenate and the arsenic content as low as 9.11~35.82 mg/L is achieved in solution after it is precipitated.

【基金】 云南省应用基础研究基金(2000E0030M);昆明理工大学人培基金(KKZ3200921005)
  • 【文献出处】 武汉理工大学学报 ,Journal of Wuhan University of Technology , 编辑部邮箱 ,2010年06期
  • 【分类号】TF18;TF811
  • 【被引频次】5
  • 【下载频次】257
节点文献中: 

本文链接的文献网络图示:

本文的引文网络