Recent advances in the beneficiation of ultrafine coal particles

IF 7.2 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology Pub Date : 2018-09-01 DOI:10.1016/j.fuproc.2018.04.035

Guichao Wang , Xuetao Bai , Changning Wu , Weng Li , Ke Liu , Ali Kiani

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引用次数: 59

Abstract

Only when problems in ultrafine coal particle beneficiation process are well understood and clarified, efficient methods can be devised to recover ultrafine coal particles in an economically viable way. When minerals are fully liberated from organic substances in the grinding process, coal beneficiation methods are needed to efficiently separate organic materials from mineral ones. This is necessary for clean coal technologies as the pollutants associated with coal utilization are the key factor in limiting the sustainability of coal utilization. To assess the current state of knowledge available in this area, a comprehensive literature review on the ultrafine coal particle beneficiation techniques is carried out with main focus on recent progresses. In this paper, previous studies on the ultrafine coal beneficiation have been critically analyzed with respect to the effects of particle sizes and surface properties. The techniques are classified into two categories, physical separation (including gravity, magnetic and electrostatic separation method) and physico-chemical separation (including oil agglomeration and bubble flotation method). The aim of this paper is to review developments and limitations of current ultrafine coal particle beneficiation techniques and also to identify the future development in recovering ultrafine coal particles.

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超细煤粉选矿研究进展

只有了解和澄清超细煤粉选矿过程中存在的问题，才能设计出经济可行的回收超细煤粉的有效方法。当矿物在磨矿过程中从有机物中充分释放出来时，需要采用有效的有机分离和矿物分离的选矿方法。这对于清洁煤技术是必要的，因为与煤炭利用有关的污染物是限制煤炭利用的可持续性的关键因素。为了评估这一领域的现有知识状况，对超细煤粉选矿技术进行了全面的文献综述，重点介绍了最新进展。本文从粒度和表面性质对超细煤选矿的影响两方面对前人的研究进行了批判性的分析。分选技术分为物理分选(包括重、磁、静电分选法)和物化分选(包括油团聚和气泡浮选法)两大类。本文综述了目前超细煤粉选矿技术的发展和局限性，并展望了超细煤粉选矿技术的发展前景。

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来源期刊

Fuel Processing Technology 工程技术-工程：化工

CiteScore

13.20

自引率

9.30%

发文量

398

审稿时长

26 days

期刊介绍： Fuel Processing Technology (FPT) deals with the scientific and technological aspects of converting fossil and renewable resources to clean fuels, value-added chemicals, fuel-related advanced carbon materials and by-products. In addition to the traditional non-nuclear fossil fuels, biomass and wastes, papers on the integration of renewables such as solar and wind energy and energy storage into the fuel processing processes, as well as papers on the production and conversion of non-carbon-containing fuels such as hydrogen and ammonia, are also welcome. While chemical conversion is emphasized, papers on advanced physical conversion processes are also considered for publication in FPT. Papers on the fundamental aspects of fuel structure and properties will also be considered.