Journal ArticleDOI
Recent advances in beneficiation for low rank coals
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TLDR
In this paper, a review of coal beneficiation technologies for low-rank coal is presented, including physical (gravity and magnetic separation), chemical (leaching), physico-chemical (flotation and oil agglomeration), and bio-beneficiation technologies.About:
This article is published in Powder Technology.The article was published on 2015-06-01. It has received 150 citations till now. The article focuses on the topics: Beneficiation & Coal.read more
Citations
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Improving the adsorption of oily collector on the surface of low-rank coal during flotation using a cationic surfactant: An experimental and molecular dynamics simulation study
TL;DR: In this paper, the effect of dodecyltrimethylammonium bromide (DTAB) on low-rank coal flotation using an oily collector (dodecane) was investigated by a combination of experimental tests and molecular dynamics simulations.
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Literature overview of Chinese research in the field of better coal utilization
TL;DR: In this article, the authors provide a comprehensive literature review and analysis of the comprehensive utilization of coal-preparation by-products in China, revealing problems during processing and giving indications of potential solutions.
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Role of molecular simulation in understanding the mechanism of low-rank coal flotation: A review
TL;DR: In this article, the basic theory of molecular simulation is reviewed, and the recent advances in the molecular structure of low-rank coal are discussed comprehensively from the viewpoint of molecular simulations.
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Effects of hydrophilic groups of nonionic surfactants on the wettability of lignite surface: Molecular dynamics simulation and experimental study
TL;DR: In this paper, two kinds of nonionic surfactants with different hydrophilic groups, n-dodecyl β-D-maltoside (C12G2) and dodecyl hepta glycol (C 12E7), were selected to modify the wettability of lignite surface by molecular dynamics simulation.
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Microwave-assisted pyrolysis of Mississippi coal: A comparative study with conventional pyrolysis
Victor Abdelsayed,Victor Abdelsayed,Dushyant Shekhawat,Mark W. Smith,Dirk D. Link,Albert E. Stiegman,Albert E. Stiegman +6 more
TL;DR: In this paper, the effect of temperature and microwave heating on the structural properties of the chars generated during pyrolysis, as well as gaseous and tar products, was investigated.
References
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A review on water in low rank coals: The existence, interaction with coal structure and effects on coal utilization
TL;DR: In this paper, a comprehensive overview on the fundamental understanding of water in brown coal and lignite, including the physical and chemical structure of coal, the forms of water present in low-rank coals, migration of water during drying, coal structure changes during moisture loss, moisture re-adsorption, and effects of water removal on subsequent applications including combustion, gasification and liquefaction are also summarized.
Book
The Chemistry and Technology of Coal
TL;DR: In this article, the authors present a character and properties of coal, including physical properties such as physical properties, mechanical properties, electrical properties, and electrical properties of the coal seams.
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Low-Rank Coal Drying Technologies—Current Status and New Developments
TL;DR: In this article, the relative merits and limitations of various drying technologies and the current state of their development are presented, and an overview of the diverse processes used for low-rank coal drying is provided.
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Enhancement in hydrophobicity of low rank coal by surfactants — A critical overview
TL;DR: In this paper, the authors showed that the addition of promoter, surfactant or oxygenated functional groups to the collector molecule markedly enhances the flotation of lower-rank and oxidized coals due to the hydrogen bonding with the polar part of the coal surface and the reagent.
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An improved class of universal collectors for the flotation of oxidized and/or low-rank coal
TL;DR: In this paper, a detailed study of the flotation response of two high-sulfur coals, Illinois No. 6 coal and Pittsburgh No. 8, using different non-ionic oxygenated surfactants as the collector is presented.