研究了45℃条件下利用中等嗜热菌浸出黄铜矿(75.5%,CuFeS2)过程中的影响因素.结果发现适当的初始pH值有利于细菌浸出,矿浆浓度和矿物粒度对细菌浸出过程的影响较大;另外初始添加适量Fe2+有助于细菌生长和提高浸出效率,但是过量添加会导致生成的黄钾铁矾沉淀阻碍浸出.初始细菌浓度、培养基和水的配比及浸出时间对浸出过程存在不同程度的影响,初始细菌浓度在1×106 cell·ml-1时浸出率最高,黄铜矿的浸出率可以达到64.20%,培养基和水的不同配比对细菌生长和浸出过程影响不是很大,浸出40 d时,铜浸出率可以达到80%以上.
参考文献
| [1] | 杨显万;沈庆峰;郭玉霞.微生物湿法冶金[M].北京:冶金工业出版社,2003:65. |
| [2] | Gericke M;Pinches A;Rooyen J V .Bioleaching of a chalcopyite concentrate using an extremely thermophilic culture[J].Miner Proceas,2001,62:243. |
| [3] | Bevilaqua D;Leite A L L C;Garcia O;Tuovinen O H .Oxidation of chaleopyrite by acidithiobaciUus ferrooxidans and acidithiobacillus thiooxidaus in shake flasks[J].Process Biochemistry,2002,38:587. |
| [4] | Mikkelsen D;Kappler U;McEwan AG;Sly LI .Archaeal diversity in two thermophilic chalcopyrite bioleaching reactors[J].Environmental microbiology,2006(11):2050-2055. |
| [5] | 邹平,杨家明,赵有才.嗜热嗜酸菌生物浸出低品位原生硫化铜矿[J].云南冶金,2003(z1):66-69. |
| [6] | 邓敬石,阮仁满,温建康,孙雪南.中等嗜热菌浸出硫化矿的研究现状及展望[J].矿产综合利用,2002(02):33-38. |
| [7] | Hausford G S;Vargas T .Chemical and eledirochemical basis of biuleaching processes[J].Hydrometallurgy,2001,59:135. |
| [8] | Hansford G S;Vargas T .Chemical and electrochemical basis of biuleaching processes[J].Hydrometalhirgy,2001,59:135. |
| [9] | Blazquez M L .Bioleaching behabiour of chalcopyrite in the presence of silver[J].Hydrometallurgy,1999,19:137. |
| [10] | Sandstrom Ake;Petersson Stig .Biuleaching of a complex sulphide ore with moderate thermophilic and extreme thermophilic microorganisms[J].HYDROMETALLURGY,1997,46:181. |
| [11] | Sand W;Gehrke Tilman;Jozsa P G;Sehippers Axel .Biochemstry of bacterial leaching-direct vs indirect biuleaching[J].Hydrometallurgy,2001,59:159. |
| [12] | Elzeky M;Attia Y A .Effect of bacterial adaptation on kinetics and mechanisms of bioleaching ferrous sulfides[J].Chemical Engineering Journal,1995,56:B115. |
| [13] | Tird K A .The role of iron-oxidizing bacterial in stimulation or inhibition of chalcopyrite-hioleaching[J].Hydrometallurgy,2000,57:225. |
| [14] | Ribera-Santillan R E .Biuleaching of a copper sulphide flotation concentrate using mesophilic and thennophilic microorganisms[J].Hydrometallurgy,1999,20:149. |
| [15] | AkeSandstrom;Stig-Petersson .Bioleaehing of a complex sulphide ore with moderate thermophilic and extreme thermophilicmicroorganisms[J].HYDROMETALLURGY,1997,46:181. |
| [16] | 舒荣波,阮仁满,温建康.黄铜矿生物浸出中钝化现象研究进展[J].稀有金属,2006(03):395-400. |
| [17] | 温建康,阮仁满,邹来昌,陈景河.紫金山铜矿生物浸出过程酸平衡分析研究[J].稀有金属,2008(03):338-343. |
| [18] | 关鲁雄,雷坚志,郑有材,熊义期.铜冶炼厂低铟烟尘中浸取有价金属的研究[J].稀有金属,2008(01):88-93. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%