Experimental Study on Defoaming of Flotation Concentrate with Different Defoamers and Their Effect on Flotation

HUANG Lanhui; CHEN Yumeng; HUANG Wei; WU Changning; WENG Li; LIU Ke

doi:10.13779/j.cnki.issn1001-0076.2022.01.015

2022 Vol. 42, No. 1

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Article navigation > Conservation and Utilization of Mineral Resources > 2022 > 42(1): 106-111

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HUANG Lanhui, CHEN Yumeng, HUANG Wei, WU Changning, WENG Li, LIU Ke. Experimental Study on Defoaming of Flotation Concentrate with Different Defoamers and Their Effect on Flotation[J]. Conservation and Utilization of Mineral Resources, 2022, 42(1): 106-111. doi: 10.13779/j.cnki.issn1001-0076.2022.01.015

Citation:

HUANG Lanhui, CHEN Yumeng, HUANG Wei, WU Changning, WENG Li, LIU Ke. Experimental Study on Defoaming of Flotation Concentrate with Different Defoamers and Their Effect on Flotation[J]. Conservation and Utilization of Mineral Resources, 2022, 42(1): 106-111. doi: 10.13779/j.cnki.issn1001-0076.2022.01.015

Experimental Study on Defoaming of Flotation Concentrate with Different Defoamers and Their Effect on Flotation

1.
Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, Guangdong, China
2.
Clean Energy Institute, Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518055, Guangdong, China
3.
Shenzhen Engineering Research Center for Coal Comprehensive Utilization, School of Innovation and Entrepreneurship, Southern University of Science and Technology, Shenzhen 518055, Guangdong, China

More Information

Corresponding authors: CHEN Yumeng, chenym7@sustech.edu.cn ; LIU Ke, liuk@sustech.edu.cn

Received Date: 29 November 2021

Publish Date: 25 February 2022

Abstract

Abstract

In order to solve a series of industrial production problems of storage, transport and dehydration of coal flotation concentrate caused by the strong stability of their foam, the defoaming experiments of silicone defoamer (G) and emulsified hydrocarbon oil defoamer (R) for flotation concentrate were studied to revel the effect of the adding method and dosage of defoamer on the defoaming results. In addition, the effect of residual defoamer in circulating water on flotation process was revealed by the flotation test. The results showed that the rate and degree of defoaming can be increased more effectively by defoamers added in the way of spraying. The defoaming property is better with the increase of the dosage of defoamers and the silicone defoamer is superior to emulsified hydrocarbon oil defoamer. A low amount of defoamer in circulating water has little effect on flotation. When the residual amount increasing, silicone oil defoaming agent reduces flotation selectivity and inhibits flotation, while emulsified hydrocarbon oil defoamer can promote it. It is suggested that the flotation concentrate should be defoamed with low dosage emulsified hydrocarbon oil by spraying.
- flotation concentrate of coal /
- defoaming /
- defoamer /
- spray /
- recycled water /
- flotation

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References

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