Simulated small-scale pilot plant heap leaching of low-grade oxide zinc ore with integrated selective extraction of zinc

被引：63

作者：

Qin, Wen-qing ^{[1
]}

Li, Wei-zhong ^{[1
]}

Lan, Zhuo-yue ^{[1
]}

Qiu, Guan-zhou ^{[1
]}

机构：

[1] Cent S Univ, Sch Resource Proc & Bioengn, Changsha 410083, Peoples R China

来源：

MINERALS ENGINEERING | 2007年 / 20卷 / 07期

基金：

中国国家自然科学基金;

关键词：

zinc; low-grade zinc oxide ores; heap leaching; solvent extraction; Di-2-ethythexyl phosphoric acid (D2EHPA);

D O I：

10.1016/j.mineng.2007.01.004

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The leaching of low-grade oxide zinc ore and simultaneous integrated selective extraction of zinc were investigated using a small-scale leaching column and laboratory scale box mixer-settlers. Di-2-ethythexyl phosphoric acid (D2EHPA) dissolved in kerosene was used as an extractant. The results showed that it was possible to selectively leach zinc from the ores by heap leaching. The zinc concentration of the leach liquor in the first leaching-extraction circuit was 32.57 g/L, and in the 16th cycle the zinc concentration was 8.27 g/L after the solvent extraction. The leach liquor was subjected to solvent extraction, scrubbing and selective stripping for the enrichment of zinc and the removal of impurities. The pregnant zinc sulfate solution produced from the stripping cycle was suitable for zinc electrowinning. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：694 / 700

页数：7

共 24 条

[1] Kinetics of sulfuric acid leaching of low-grade zinc silicate ore [J].

Abdel-Aal, EA .

HYDROMETALLURGY, 2000, 55 (03) :247-254

[2] THE RECOVERY OF ZINC FROM THE LEACH LIQUORS OF THE CENIM-LNETI PROCESS BY SOLVENT-EXTRACTION WITH DI(-2-ETHYLHEXYL) PHOSPHORIC-ACID [J].

AMER, S ;

FIGUEIREDO, JM ;

LUIS, A .

HYDROMETALLURGY, 1995, 37 (03) :323-337

[3] MODELING OF SOLVENT-EXTRACTION EQUILIBRIA OF ZN(II) FROM SULFATE-SOLUTIONS WITH BIS-(2-ETHYLHEXYL)-PHOSPHORIC ACID [J].

BART, HJ ;

MARR, R ;

SCHEKS, J ;

KONCAR, M .

HYDROMETALLURGY, 1992, 31 (1-2) :13-28

[4] Hydrometallurgical treatment of zinc silicate ore from Thailand [J].

Bodas, MG .

HYDROMETALLURGY, 1996, 40 (1-2) :37-49

[5]

CHEN SM, 1998, YUNNAN METALL, V27, P31

[6] ELECTROCHEMICAL ASPECTS OF ZINC-SULFIDE LEACHING BY THIOBACILLUS-FERROOXIDANS [J].

CHOI, WK ;

TORMA, AE ;

OHLINE, RW ;

GHALI, E .

HYDROMETALLURGY, 1993, 33 (1-2) :137-152

[7]

DOEPKER RD, 1990, P W REG S MIN MIN PR, P69

[8]

DUAN XM, 2000, MINING METALLURGY, V9, P47

[9] SEPARATION OF ZINC FROM COPPER BY DI-2-ETHYLHEXYL-PHOSPHORIC ACID - EQUILIBRIUM STUDY [J].

FORREST, C ;

HUGHES, MA .

HYDROMETALLURGY, 1978, 3 (04) :327-342

[10] Preliminary design of a solvent extraction process for the galvanic stripping of iron from D2EHPA [J].

Gu, H ;

Chang, CM ;

Barrera-Godínez, JA ;

O'Keefe, TJ .

MINERALS & METALLURGICAL PROCESSING, 2000, 17 (01) :16-22

← 1 2 3 →