黑龙江科技大学学报2024，Vol.34Issue(1)：22-27,6.DOI:10.3969/j.issn.2095-7262.2024.01.004
月桂酸甲酯强化低阶煤浮选的作用机制
Mechanism of methyl laurate for flotation enhancement of low rank coal
李明明 1李文成 2郭怡凯2
作者信息
- 1. 黑龙江科技大学 矿业工程学院,哈尔滨 150022||山西工学院 能源产业学院,山西 朔州 036000
- 2. 黑龙江科技大学 矿业工程学院,哈尔滨 150022
- 折叠
摘要
Abstract
This paper aims to investigate the strengthening mechanism of methyl laurate on low rank coal flotation.The study by taking methyl laurate as collector,conducts the flotation experiment,flotation velocity experiment and flotation kinetics analysis and the the comparison with n-dodecane in Ningdong.The results show that the combustible recovery rate and flotation rate constant of coal samples treated with methyl laurate in place of n-dodecane increase by 10.01%and 1.84%,respectively.Through the infra-red spectral peak fitting analysis,compared with n-dodecane,the content of polar functional groups of the clean coal treated with methyl is reduced by 8.69%,and the content of aliphatic hydrocarbon and aro-matic hydrocarbon increases by 8.69%,suggesting that methyl laurate effectively covering the oxygen-containing functional group sites on the surface of low rank coal,exposing its own C-C/C-H,resul-ting in an increase in coal sample hydrophobicity,thereby improving the combustible recovery rate and flotation rate constant of low rank coal.This is the main mechanism of methyl laurate for strengthening the flotation of low rank coal.关键词
低阶煤/月桂酸甲酯/浮选动力学/红外光谱分峰拟合Key words
low rank coal/methyl laurate/flotation kinetics/infrared spectral peak fitting分类
化学化工引用本文复制引用
李明明,李文成,郭怡凯..月桂酸甲酯强化低阶煤浮选的作用机制[J].黑龙江科技大学学报,2024,34(1):22-27,6.
