钾长石粉酸浸除铁废液资源化的实验研究

郑骥; 马鸿文; 章西焕; 文智慧

Volume 29 Issue 1

Jan. 2004

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ZHENG Ji, MA Hong-wen, ZHANG Xi-huan, WEN Zhi-hui, 2004. Treatment on Acid Leaching Wastewater from K-Feldspar Powders. Earth Science, 29(1): 59-64.

Citation:

ZHENG Ji, MA Hong-wen, ZHANG Xi-huan, WEN Zhi-hui, 2004. Treatment on Acid Leaching Wastewater from K-Feldspar Powders. Earth Science, 29(1): 59-64.

ZHENG Ji, MA Hong-wen, ZHANG Xi-huan, WEN Zhi-hui, 2004. Treatment on Acid Leaching Wastewater from K-Feldspar Powders. Earth Science, 29(1): 59-64.

Citation:

ZHENG Ji, MA Hong-wen, ZHANG Xi-huan, WEN Zhi-hui, 2004. Treatment on Acid Leaching Wastewater from K-Feldspar Powders. Earth Science, 29(1): 59-64.

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Treatment on Acid Leaching Wastewater from K-Feldspar Powders

National Laboratory of Mineral Materials, China University of Geosciences, Beijing 100083, China

Received Date: 2003-04-15
Publish Date: 2004-01-25

Abstract

Abstract

After sulfuric acid or hydrochloric acid leaching to remove iron from K-feldspar powders, the filtrate wastewater contains free acid and abundant useful metal ions such as iron. The leaching proportion of iron from K-feldspar powders is 88.3% after treated by the used sulfuric acid. With a purity of 94.1% and 74% respectively, voltaite crystal and solid FeCl₃ have been produced by crystallizing in a lower temperature following the vaporization of the wastewater, with 70% iron and 96.5% potassium recovered. No need of high temperature and pressure, and with high efficiency, low energy loss and less pollution, this process proves its effectiveness. The strong acidity, Fe²⁺ and rather lower concentration of alkalis ions are responsible for voltaite, not jarosite, crystallizing from the acidic iron-bearing water.
- K-feldspar,
- acidic wastewater,
- crystallizing,
- voltaite,
- ferric chloride

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References(21)

References

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