Results 111 to 120 of about 31,129 (166)

Preparation of Coal Briquette by Using Coal Waste and Coal Slurry

Advanced Materials Research, 2011
Coal waste and coal slurry are the largest industrial waste generated from coal preparation plants. This paper describes a method to make clean coal briquette with coal waste and coal slurry. Two binders were used during the coal briquette making process.
Guang Jun Lu, Fang Qin Cheng
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Preparation of urgal coals

Soviet Mining Science, 1965
1. A 44% yield of coking concentrate with 8% ash can be obtained by preparing Urgal coals with 32–33% ash by a combined system including centrifugal separation. Preparation of these coals by the use of hydrocyclones+flotation give a concentrate with>11% ash with yield 37%, or a concentrate with 9.3% and yield 23% based on run-of-mine coal.
V. S. Kaminskii, M. S. Sokolova
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Coal Preparation and Cleaning

1984
Most coal requires some preparation before use. Preparation may range from simply crushing to provide a size consist suitable for certain types of boilers to extensive size reduction and cleaning to remove sulfur and ash-forming mineral matter. At present, coal cleaning is accomplished through physical separation of particles low in mineral content ...
T. D. Wheelock, R. Markuszewski
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Preparation of coal slurry with 2-propanol

Journal of Hazardous Materials, 2006
This study explored the feasibility of using waste organic solvents as substitutes for water to prepare coal slurries. The rheological properties of coal-2-propanol slurries were examined and compared with that of coal-water slurry (CWS). The good compatibility between coal particles and 2-propanol resulted in stable particle suspension in slurry which
Yu-Jen, Shin, Yun-Hwei, Shen
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Survey of noise in coal preparation plants

The Journal of the Acoustical Society of America, 2007
In response to the continuing problem of noise induced hearing loss (NIHL) among mine workers, the National Institute for Occupational Safety and Health (NIOSH) has conducted numerous noise surveys in coal preparation plants. The research, consisting of worker dose monitoring, task observations, and equipment noise profiling, was completed in eight ...
Jeffrey S, Vipperman, Eric R, Bauer, Daniel R, Babich   +2 more
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Preparation of coal slurry with organic solvents

Chemosphere, 2007
In this study, various organic solvents were used to prepare coal slurries and the rheological and thermal properties of coal-organic solvent slurries were examined. Solvents with molecules containing unpaired electrons (high basicity) show high extraction power and cause swelling of coal.
Yu-Jen, Shin, Yun-Hwei, Shen
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STATUS OF COAL MINING AND COAL PREPARATION IN POLAND

2016
The Report presents information on the occurrence of hard coal in Poland. Two coal basins are described, in which underground coal mining is currently taking place: the Lublin Coal Basin (LZW) and the Upper Silesian Coal Basin (GZW). For these two coal basins, general information is given concerning geological resources and their structure, as well as ...
Wiesław S. BLASCHKE, Józef SZAFARCZYK, Ireneusz BAIC, Zofia BLASCHKE, Lidia GAWLIK   +4 more
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Heavyweights in coal preparation

Filtration + Separation, 2018
The main separation equipment in China is the heavy medium cyclone, where high separation accuracy is important. Here, we look at two heavyweights in coal preparation, which reduced abrasion during the separation process, so decreasing the cost of maintenance.
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Characterization of coal water slurry prepared for PRB coal

Journal of Fuel Chemistry and Technology, 2014
Abstract Powder River Basin (PRB) coal, which accounts for over 40% of the coal consumed for power generation in the United States, was investigated for preparation of coal water slurry (CWS). The static stability and rheology of the CWS were characterized as a function of loading.
Fei Yi, Akshay Gopan, Richard L. Axelbaum   +2 more
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Economics of Coal Preparation of Indian Coals for Power Generation

Energy Sources, 1998
The majority of coal burned in Indian power stations is high-ash, run-of-mine coal that has been subjected to little or no coal beneficiation to reduce its ash and sulfur content. This article considers each stage of the supply chain of coal from the coal mine to electricity generation in evaluating costs for the supply of power station fuels.
D. G. OSBORNE, C. HUGHES-NARBOROUGH
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