Coal Preparation

Luttrell, G.H.; Honaker, R.Q.

doi:10.1007/978-1-4614-5722-0_10

Cited by 4 publications

(2 citation statements)

References 24 publications

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“…First of importance of coal as inexpensive power generation all run of mine (ROM) coal should be washed to resource and that explains the government's reduce sulphur, ash content and transportation interest to produce 20 % of energy demand from the cost. [4,5] coal. The plant at Thar, funded by China would…”

Section: Introductionmentioning

confidence: 99%

Experimental study of coal washability using float and sink test

Imran

Ali

Masood

et al. 2021

PIChE

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Pakistani coal is characterized by large amount of mineral matters especially pyrite, which restricts its use in power generation and process industry. High ash contents in coal create problems in terms of slagging, fouling, clinker formation and environmental pollution. High ash content of the coal will affect the coal applications, in order to reduce ash the contents of coal, there is need to clean the coal. In this experimental study effect of dense medium, specific gravity, settling time and particle size on coal washability have been carried out. Experimental study showed that maximum clean coal float fraction was separated out at particle size of 60 mesh. The maximum yield of clean coal is 86.1 % obtained in float and sink test. Settling time also influenced directly on float fraction, float and sink fraction became almost constant at 16 hours. In present research lowest ash contents of clean coal is reduced from 36.38 % to 11.1% which is acceptable for further utilization of process industry.

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Section: Introductionmentioning

confidence: 99%

Experimental study of coal washability using float and sink test

Imran

Ali

Masood

et al. 2021

PIChE

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“…Coal cleaning has been widely used as a clean and efficient process. Its objective is to remove minerals, which are considered as hazardous substances, from raw coal. − The difficulty in separating the minerals from the coal determines the effective quality of coal cleaning, that is, coal washability is directly related to the effectiveness of coal cleaning. The petrological composition, quantity, type, nature, and occurrence of minerals in the coal will affect the removal of minerals during the cleaning process. − Mineral occurrence and its dissemination characteristics are two major factors determining the effectiveness of coal cleaning.…”

Section: Introductionmentioning

confidence: 99%

Behavior of Minerals and Trace Elements during Cleaning of Three Coals with Moderately High Ash Yields

et al. 2020

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The removal rate of minerals and 17 trace elements during coal cleaning, as well as their cleaning potential, were investigated based on selection of washing products from three coal washeries and raw coal samples. The petrological, mineralogical, and chemical characteristics of the samples were investigated using an optical microscope, a scanning electron microscopy with energy dispersive X-ray spectroscopy, and an inductively coupled plasma mass spectrometer. The minerals derived from raw and clean coals of the Fenghuang (FH), Huangling (HL), and Gaoyang (GY) coal mines consisted mainly of clay minerals and pyrite. Pyrite and clay minerals occurred in five main forms; moreover, we observed three different types of pyrite and four types of clay mineral dissemination. Depending on the type of dissemination, the removal of these minerals can be more or less difficult to achieve. The removal rate of trace elements from the clean coals of FH and HL is >70% and it increases with decreasing coal particle size. In addition, the removal rate of trace elements from the clean coals of GY is low. FH and GY belong to a marine peat flat coal-forming environment, while HL belongs to a terrestrial mire coal-forming environment. This environmental difference explains the varying removal efficiency of mineral matter during coal cleaning.

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Partitioning Behavior of 4-Methyl Cyclohexane Methanol in Two Appalachian Coal Preparation Plants

Noble

Ziemkiewicz

2015

International Journal of Coal Preparation and Utilization

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Coal Preparation

Cited by 4 publications

References 24 publications

Experimental study of coal washability using float and sink test

Experimental study of coal washability using float and sink test

Behavior of Minerals and Trace Elements during Cleaning of Three Coals with Moderately High Ash Yields

Partitioning Behavior of 4-Methyl Cyclohexane Methanol in Two Appalachian Coal Preparation Plants

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