Decomposing scheelite and scheelite-wolframite mixed concentrate by caustic soda digestion

被引：11

作者：

Sun, PM ^{[1
]}

Li, HG ^{[1
]}

Li, YJ ^{[1
]}

Zhao, ZW ^{[1
]}

Huo, GS ^{[1
]}

Sun, SM ^{[1
]}

Liu, MS ^{[1
]}

Huo, GS ^{[1
]}

Sun, ZM ^{[1
]}

Liu, MS ^{[1
]}

机构：

[1] Cent S Univ, Sch Met Sci & Engn, Changsha 410083, Peoples R China

来源：

JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY | 2003年 / 10卷 / 04期

关键词：

scheelite concentrate; wolframite with high proportion of calcium; low-grade scheelite-wolframite mixed concentrate; caustic soda digestion;

D O I：

10.1007/s11771-003-0027-5

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Scheelite and scheelite-wolframite mixed concentrates with different grades were decomposed by caustic soda digestion, and the effects of caustic soda(NaOH) dosage, the ratio of water to ore and the stirring rate on tungsten recovery were studied. The results show that under the conditions that the ratio of water to ore is 0.8, stirring rate is 500 r (.) min(-1) and the heating time is 2.0 h at 160 degreesC, the recovery of tungsten reaches 98% for scheelite (omega(WO3) is 65.04%) and wolframite containing high proportion of calcium (omega(WO3) is 65.58%, omega(Ca) is 7.53%), when caustic soda dosage is 2.2 and 2.0 times of theoretical value, respectively; the recovery of tungsten can be more than 98%, 98% and 96% respectively for low-grade scheelite-wolframite mixed concentrate with 55.78%, 45.32% and 25.21% WO3, when caustic soda dosage is 2.6, 3.2 and 5.5 times of theoretical value, respectively.

引用

页码：297 / 300

页数：4

共 19 条

[1] Decomposing scheelite and scheelite-wolframite mixed concentrate by caustic soda digestion
孙培梅
李洪桂
李运姣
赵中伟
霍广生
孙召明
刘茂盛
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[2] Leaching Behavior and Mechanism of Scheelite and Wolframite in Treating a Mixed Scheelite-Wolframite Concentrate by Hydrochloric Acid
Chen, Yuanlin
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Guo, Xueyi
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[J]. JOURNAL OF SUSTAINABLE METALLURGY, 2023, 9 (02) : 837 - 847
[3] CAUSTIC　DECOMPOSITION　OF　SCHEELITE　AND　SCHEELITE－WOLFRAMITE　CONCENTRATES　THROUGH　MECHANICAL　ACTIVATION
Li Honggui
Liu Maosheng
Sun Peimei
Li Yunjiao(Department of Nonferrous Metallurgy
[J]. Journal of Central South University, 1995, (02) : 16 - 20
[4] Chlorination of a scheelite-wolframite concentrate with chlorine and sulphur dioxide
Menéndez, CJ
Nolasco, EJ
Tavani, EL
Pereira, E
[J]. CANADIAN METALLURGICAL QUARTERLY, 1998, 37 (05) : 379 - 387
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Yuanlin Chen
Guangsheng Huo
Xueyi Guo
Lei Zhang
[J]. Journal of Sustainable Metallurgy, 2023, 9 : 837 - 847
[6] Wolframite Conversion in Treating a Mixed Wolframite–Scheelite Concentrate by Sulfuric Acid
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Qiusheng Zhou
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Tiangui Qi
Pekka Taskinen
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[7] Wolframite Conversion in Treating a Mixed Wolframite-Scheelite Concentrate by Sulfuric Acid
Shen, Leiting
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Peng, Zhihong
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[8] A decomposing technique for scheelite concentrate and low-grade scheelite concentrate
HUO Guangsheng
SUN Peimei
LI Honggui
LI Yunjiao
ZHAO Zhongwei
SUN Zhaoming
LIU Maosheng School of Metallurgy Science and Engieering
[J]. Rare Metals, 2004, (02) : 115 - 119
[9] A decomposing technique for scheelite concentrate and low-grade scheelite concentrate
Huo, GS
Sun, PM
Li, HG
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Zhao, ZW
Sun, ZM
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[J]. RARE METALS, 2004, 23 (02) : 115 - 119
[10] Extracting tungsten from scheelite concentrate with caustic soda by autoclaving process
Zhao, Zhongwei
Li, Jiangtao
Wang, Shibo
Li, Honggui
Liu, Maosheng
Sun, Peimei
Li, Yunjiao
[J]. HYDROMETALLURGY, 2011, 108 (1-2) : 152 - 156

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