铜萃取有机物对酸性溶液中磁黄铁矿生物溶解的影响
毕业论文关键词：嗜酸氧化亚铁硫杆菌；铜萃取；Lix984N；磁黄铁矿；生物溶解
Abstract
Associated biological dissolution of pyrrhotite to non-ferrous metal metallurgy, coal and biological desulfurization process has important influence. And in the process of biological magnetic pyrite dissolution has many influence factors. In this paper, we study the existence of copper in acidic solution extraction agent、diluent、modification agent pollution, in the acidophilic thiobacillus ferrous oxide dissolution behavior of biological oxidation of pyrrhotite, such as interpretation of copper extraction organic matter influence on pyrrhotite biological dissolved in acid solution. The results show that the organic meet from various aspects affect the biological leaching process of pyrrhotite, inhibit its leaching, and the more the greater the concentration of organic phase Lix984N effect.To the production practice to prevent organic pollution, and provide experimental basis for understanding biological mechanism of metallurgical process.
Keywords: A.ferrooxidans; Copper extraction; Lix984N pyrrhotite; Biosolubilization
目录
1 绪论 1
1.1生物冶金简介 1
1.1.1生物冶金工艺 1
1.1.2浸矿细菌总类 2
1.1.3浸出机理 4
1.2影响生物浸出效果的因素 5
1.2.1浸矿微生物与培养基的影响 5
1.2.2矿石性质、矿石粒度及浓度的影响 6
1.2.3 浸矿溶液pH、温度的影响 6
1.2.4 萃取有机相的影响. 7
1.3 磁黄铁矿溶浸行为研究 7
1.3.1 矿物特点 7
1.3.2 细菌浸出磁黄铁矿机理研究 8
1.3.3 磁黄铁矿溶浸行为研究展望 9
2 实验部分 10
2.1 实验原料及设备 10
2.1.1 实验原料 10
2.1.2 实验设备 11
2.2 实验方案与步骤 12
2.2.1 实验方案 12
2.2.2实验步骤 12
2.3 实验方法与检测方法 13
2.3.1 实验方法 13
2.3.2 检测方法 14
3 结果与讨论 15
3.1铜萃取有机物对酸性溶液中磁黄铁矿生物溶解的影响 15
3.1.1萃取有机物对浸出过程中细菌浓度的影响 15
3.1.2萃取有机物对浸出过程中pH及电位变化的影响 16
3.1.3萃取有机物对浸出过程中Fe离子浓度变化的影响 18
3.2壬基酚对酸性溶液中磁黄铁矿生物溶解的影响 20
3.2.1壬基酚对浸出过程中细菌浓度的影响 20
3.2.2壬基酚对浸出过程中pH及电位变化的影响 20
3.2.3壬基酚对浸出过程中Fe离子浓度变化的影响 22
4 结论 25
致谢 26
参考文献 27
下一篇：保温玻璃材料的研究+文献综述