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| Study of Treatment of Molybdenum Extraction Raffinate from Acidic Leaching Solution of Ni-Mo Ores by Polyferric Sulfate (PFS) |
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Received:April 10, 2014
Revised:April 14, 2014
Accepted:April 15, 2014
Published Online:September 19, 2014
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| DOI：10.3969/j.issn.1007-7545.2014.10.010 |
| KeyWord:molybdenum extraction raffinate; polyferric sulfate; hydrogen peroxide; heavy metal ions |
| Author | Institution |
| HU Lei |
北京矿冶研究总院 |
| LIANG Xinxing |
万宝矿产有限公司 |
| GUO Chihao |
北京矿冶研究总院 |
| XIAO Liansheng |
中南大学冶金科学与工程学院 |
| ZENG Zhiqi |
中南大学冶金科学与工程学院 |
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| Abstract: |
| Heavy metal ions and chemical oxygen demand (COD) in molybdenum extraction raffinate from acidic leaching solution of Ni-Mo ores were treated by polyferric sulfate (PFS). The effects of dosage of hydrogen peroxide and PFS, stirring time and pH value on concentration of Zn2 , Pb2 , Ni2 and COD in raffinate were investigated. The results show that COD concentration can be reduced to 500 mg/L below with removal rate of 89%, and heavy metal ions meet the integrated wastewater discharge standard of GB 8978-1996 under the optimum conditions including dosage of hydrogen peroxide of 20 mL/L, PFS dosage of 60 mg/L, stirring time of 90 min and pH value of 11.0. |
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