Upgrading of Steam Coal Slime Using High Intensity Conditioning Flotation

Liu Xu; Han Hua; Shen Shiyu; Li Zhihong; Wang Huaifa

doi:10.3969/j.issn.1000-6532.2022.03.028

2022 No. 3

Article Contents

Article navigation > Multipurpose Utilization of Mineral Resources > 2022 > 43(3): 158-162, 192

Next Article Previous Article

Liu Xu, Han Hua, Shen Shiyu, Li Zhihong, Wang Huaifa. Upgrading of Steam Coal Slime Using High Intensity Conditioning Flotation[J]. Multipurpose Utilization of Mineral Resources, 2022, 43(3): 158-162, 192. doi: 10.3969/j.issn.1000-6532.2022.03.028

Citation:

Liu Xu, Han Hua, Shen Shiyu, Li Zhihong, Wang Huaifa. Upgrading of Steam Coal Slime Using High Intensity Conditioning Flotation[J]. Multipurpose Utilization of Mineral Resources, 2022, 43(3): 158-162, 192. doi: 10.3969/j.issn.1000-6532.2022.03.028

Upgrading of Steam Coal Slime Using High Intensity Conditioning Flotation

1.
Taiyuan University of Technology, Taiyuan, Shanxi, China
2.
State Key Laboratory of Mineral Processing, Beijing, China

More Information

Corresponding author: Wang Huaifa, wanghuaifa@tyut.edu.cn

Received Date: 02 November 2020

Publish Date: 25 June 2022

Abstract

Abstract

As a pretreatment technology of coal slime flotation, High Intensity Conditioning has a positive effect on the strengthening of flotation process. In this study, a series of slurry mixing and flotation tests were carried out on coal samples from Hulusu Coal Mine in Tuke Town, Udeng Banner, Ordos City, Inner Mongolia Autonomous Region to study the effect of high shear slurry mixing pretreatment on coal flotation. The results show that the recovery rate of high shear slurry flotation was 3.79% higher than that of conventional flotation combustible mixture under FDJ and Q1. In the case of similar combustible recovery, the amount of collector can be saved by 37.5%. The test results of flotation kinetics tests show that after high-shear slurry conditioning pretreatment, the combustible recovery rate increased by 20.02% and 25.99% respectively in the first two 20 s. The flotation process was completed at 90 s. The flotation velocity constant increased by nearly 50%. Under the combination of EKOF and Secoctanol, the strong shear force and eddy current effect will make the foaming agent composition in the composite agent play a role in the mixing stage. The bubbles carry coal particles to float, and carry drugs those are not dispersed in time, which causes waste of drugs and worsens the flotation effect.
- Coal slime /
- Flotation /
- High shear conditioning /
- Flotation kinetics

FullText(HTML)

References

[1]	武立俊, 彭耀丽, 刘春华. 动力煤选煤厂煤泥浮选降灰提质增效试验研究[J]. 矿山机械, 2016, 44(3):59-63. Google Scholar WU L J, PENG Y L, LIU C H. Experimental study on ash reduction and quality improvement of coal slime flotation in steam coal preparation plant[J]. Mining Machinery, 2016, 44(3):59-63. Google Scholar
[2]	程万里, 邓政斌, 刘志红, 等. 煤泥浮选中矿物颗粒间相互作用力的研究进展[J]. 矿产综合利用, 2020(3):48-55. doi: 10.3969/j.issn.1000-6532.2020.03.008 CrossRef Google Scholar CHENG W L, DENG Z B, LIU Z H, et al. Research progress of interaction force between mineral particles in coal slurry flotation[J]. Multipurpose Utilization of Mineral Resources, 2020(3):48-55. doi: 10.3969/j.issn.1000-6532.2020.03.008 CrossRef Google Scholar
[3]	王成勇, 陈鹏, 潘东, 等. 疏水引力在煤泥浮选过程中的作用机理及应用[J]. 矿产综合利用, 2020(3):105-110. doi: 10.3969/j.issn.1000-6532.2020.03.017 CrossRef Google Scholar WANG C Y, CHEN P, PAN D, et al. Mechanism and application of hydrophobic attraction in coal flotation process[J]. Multipurpose Utilization of Mineral Resources, 2020(3):105-110. doi: 10.3969/j.issn.1000-6532.2020.03.017 CrossRef Google Scholar
[4]	宋帅, 樊玉萍, 马晓敏, 等. 煤泥水中煤与不同矿物相互作用的模拟研究[J]. 矿产综合利用, 2020(1):168-172. doi: 10.3969/j.issn.1000-6532.2020.01.034 CrossRef Google Scholar SONG S, FAN Y P, MA X M, et al. Simulation study on interaction between coal and different minerals in coal slurry[J]. Multipurpose Utilization of Mineral Resources, 2020(1):168-172. doi: 10.3969/j.issn.1000-6532.2020.01.034 CrossRef Google Scholar
[5]	李吉辉, 马力强, 吴伦, 等. 高剪切调浆和捕收剂乳化处理对煤泥浮选效果的影响研究[J]. 选煤技术, 2019(1):67-71. Google Scholar LI J H, MA L Q, WU L, et al. Study on the effect of high-shear slurry adjustment and collector emulsification treatment on slime flotation effect[J]. Coal Preparation Technology, 2019(1):67-71. Google Scholar
[6]	张峰. 高剪切调浆煤泥浮选动力学研究[D]. 太原: 太原理工大学, 2019. Google Scholar ZHANG F. Study on the dynamics of high-shear mixed slurry flotation[D]. Taiyuan: Taiyuan University of Technology, 2019. Google Scholar
[7]	许宁, 陶秀祥. 高剪切搅拌对煤泥颗粒表面性质的影响[J]. 煤炭技术, 2018, 37(12):325-327. Google Scholar XU N, TAO X X. The effect of high shear mixing on the surface properties of slime particles[J]. Coal Technology, 2018, 37(12):325-327. Google Scholar