Application and Quantum Chemical Analysis of Novel Sulfur-Containing Heterocyclic Inhibitors in Separation of Molybdenite and Galena

LIU Chongjun; WU Guiye; Ma Yanhong; LU Tong; LIU Huinan; ZHAO Zhiqiang; ZHU Yangge; ZHONG Zaiding; AN Geng; CHEN Lijuan

doi:10.13779/j.cnki.issn1001-0076.2022.01.011

2022 Vol. 42, No. 1

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Article navigation > Conservation and Utilization of Mineral Resources > 2022 > 42(1): 75-81

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LIU Chongjun, WU Guiye, Ma Yanhong, LU Tong, LIU Huinan, ZHAO Zhiqiang, ZHU Yangge, ZHONG Zaiding, AN Geng, CHEN Lijuan. Application and Quantum Chemical Analysis of Novel Sulfur-Containing Heterocyclic Inhibitors in Separation of Molybdenite and Galena[J]. Conservation and Utilization of Mineral Resources, 2022, 42(1): 75-81. doi: 10.13779/j.cnki.issn1001-0076.2022.01.011

Citation:

LIU Chongjun, WU Guiye, Ma Yanhong, LU Tong, LIU Huinan, ZHAO Zhiqiang, ZHU Yangge, ZHONG Zaiding, AN Geng, CHEN Lijuan. Application and Quantum Chemical Analysis of Novel Sulfur-Containing Heterocyclic Inhibitors in Separation of Molybdenite and Galena[J]. Conservation and Utilization of Mineral Resources, 2022, 42(1): 75-81. doi: 10.13779/j.cnki.issn1001-0076.2022.01.011

Application and Quantum Chemical Analysis of Novel Sulfur-Containing Heterocyclic Inhibitors in Separation of Molybdenite and Galena

1.
State Key Laboratory of Mineral Processing Science and Technology, Beijing General Research Institute of Mining and Metallurgy, Beijing 100160, China
2.
Jinduicheng Molybdenum Co., Ltd., Xi' an 710077, China

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Corresponding author: WU Guiye, wuguiye@bgrimm.com

Received Date: 20 February 2022

Publish Date: 25 February 2022

Abstract

Abstract

In the traditional separation of molybdenum and lead, phosphorus nox is used as an inhibitor, which has serious toxicity and pollution. In order to reduce the content of lead in molybdenum concentrate from Jinduicheng, the lead inhibition effects of mercaptopropanol, L-cysteine, 1, 3-oxythiopentane carboxylic acid and tiopronin with weak toxicity were compared, and the amount of inhibitor were investigated. After comparison, 1, 3-oxythiopentane carboxylic acid was selected as the inhibitor of molybdenum-lead-bearing concentrate in Jinduicheng. After condition test, molybdenum concentrate can be obtained with molybdenum grade of 52.20%, recovery rate of 85.01% and lead content of 0.010% through one roughings and five cleanings when the regrinding fineness of -38 μm was 80%. The effect of 1, 3-oxythiopentane carboxylic acid is equivalent to that of phosphorus Knox. The characteristics of frontier orbits of galena and molybdenite were calculated by means of coordination chemistry and density functional theory, and the characteristics of frontier orbits of metal sites in galena and molybdenite were analyzed. It is pointed out that the symmetry of frontier orbits of the inhibitors is the key to affect the selectivity of inhibitors.
- separation of molybdenite and galena /
- galena /
- inhibitor /
- flotation experiment /
- molecular orbital /
- density functional theory /
- coordination chemistry

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References

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