难浮瘦煤的颗粒特性和浮选特征

IF 2.8 4区 工程技术 Q2 ENGINEERING, CHEMICAL
Processes Pub Date : 2024-09-18 DOI:10.3390/pr12092004
Yihong Li, Ligang Tang, Lei Yao, Bo Gao, Xue Yuan, Changsheng Shi
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引用次数: 0

摘要

贫煤的浮选效果对其清洁利用至关重要。因此,研究了难浮贫煤的浮选特性。进料性质分析结果表明,进料灰分含量高,粒度非常细。煤矸石中的矿物主要包括绢云母、高岭石、石英、白云母和其他物质。浮选后,尾矿中煤粒的官能团减少,吸收峰强度减弱。此外,多因素浮选实验结果表明,捕收剂和浮选剂的用量是影响精煤产率的重要因素。随着这两个因素的增加,精煤产率逐渐增加。精煤的灰分含量随着泡沫剂用量的增加而增加。在本研究使用的进料浓度范围内,进料浓度不是影响精煤产率和灰分含量的重要因素。提出了精煤产率和灰分含量的预测模型。在优化的实验条件下,精煤产率和浮选完美指数分别为 72.15%和 46.63%,表明浮选效果良好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Particle Properties and Flotation Characteristics of Difficult-to-Float Lean Coal
The flotation effect of lean coal is crucial for its clean utilization. Therefore, the flotation characteristics of difficult-to-float lean coal were studied. The analysis results of the feed properties showed that the ash content of the feed was high and the particle size was very fine. The minerals in the gangue mainly included sericite, kaolinite, quartz, white mica, and other substances. After flotation, the functional groups of the coal particles in the tailings decreased, and the absorption peak intensity weakened. Furthermore, the results of multi-factor flotation experiments showed that the dosages of the collector and the frother were significant factors affecting the yield of clean coal. The clean coal yield gradually increased with an increase in the two factors. The ash content of the clean coal increased with an increase in the frother dosage. Within the range of feed concentrations used in this work, the feed concentration was not a significant factor affecting the clean coal’s yield and ash content. Prediction models for the clean coal yield and ash content were proposed. Under optimized experimental conditions, the clean coal yield and the flotation perfection index were 72.15% and 46.63%, respectively, indicating a good flotation effect.
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来源期刊
Processes
Processes Chemical Engineering-Bioengineering
CiteScore
5.10
自引率
11.40%
发文量
2239
审稿时长
14.11 days
期刊介绍: Processes (ISSN 2227-9717) provides an advanced forum for process related research in chemistry, biology and allied engineering fields. The journal publishes regular research papers, communications, letters, short notes and reviews. Our aim is to encourage researchers to publish their experimental, theoretical and computational results in as much detail as necessary. There is no restriction on paper length or number of figures and tables.
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