Leaching of deep-sea manganese nodule and base metal sulfide minerals in hydrochloric acid

被引：0

作者：

Madhuchhanda, M ^{[1
]}

Devi, NB ^{[1
]}

Rao, KS ^{[1
]}

Rath, PC ^{[1
]}

Paramguru, RK ^{[1
]}

机构：

[1] Council Sci & Ind Res, Reg Res Lab, Bhubaneswar 751013, Orissa, India

来源：

TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS | 2000年 / 53卷 / 1-2期

关键词：

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Leaching of manganese nodule in the presence of chalcopyrite. sphalerite and galena individually was studied in HCl medium. When leached together, dissolution of metal values from the nodule as well as each of the base metal sulfide minerals, was found to be more efficient compared to their leaching individually under similar conditions. Galvanic interaction between metal sulfides (MS) and MnO2 and corrosion coupling due to cyclic action of Fe3+/Fe2+ redox couple were responsible for such increase in dissolution. Chlorine gas generated in the system also dissolved the base metal sulfide minerals. This approach of combined MS-manganese nodule leaching appears to be advantageous because of more efficeint dissolution and addition of value into the final product.

引用

页码：71 / 77

页数：7

共 14 条

[1]

CHEN H, 1992, HYDROMETALLURGY, V28, P275

[2]

HAYNES BW, 1983, BUREAU MINE INFORMAT, P8924

[3]

KANE WS, 1974, Patent No. 3809624

[4] STUDIES ON THE DISSOLUTION OF METAL VALUES IN MANGANESE NODULES OF INDIAN-OCEAN ORIGIN IN DILUTE HYDROCHLORIC-ACID [J].

KANUNGO, SB ;

JENA, PK .

HYDROMETALLURGY, 1988, 21 (01) :23-39

[5]

KANUNGO SB, 1998, KYDORMET, V21, P41

[6] APPLICATION OF MIXED POTENTIAL-THEORY IN HYDROMETALLURGY [J].

LI, J ;

ZHONG, TK ;

WADSWORTH, ME .

HYDROMETALLURGY, 1992, 29 (1-3) :47-60

[7]

MOHNEMIUS M, 1981, CHEM IND 0620, P410

[8] Galvanic interaction between manganese dioxide and pyrite [J].

Paramguru, RK ;

Nayak, BB .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1996, 143 (12) :3987-3991

[9]

Paramguru RK, 1998, T INDIAN I METALS, V51, P311

[10]

PREMCHAND RK, 1999, P 3 1999 OC MIN S GO, P237

← 1 2 →