Stabilization of fine-coal-refuse slurry through use of cement-type additives

Journal Article · Mon Jan 01 00:00:00 EST 1979 · Trans. Am. Inst. Min. Eng.; (United States)

OSTI ID:6142395

Wen, W W ^[1]; Hutchinson, D W; Terchick, A A; Anderson, J C

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1. Dept. of Energy, Pittsburgh, PA

It is estimated that approximately 3% of the raw coal processed today in coal preparation plants throughout the nation will ultimately report to slurry-tailing disposal. The usual disposal method is to pump refuse slurry containing -48 mesh (300 ..mu..m) refuse into dams or impoundments constructed of coarse refuse. The failure of an impoundment at Buffalo Creek, Saunders, WV resulted in an evaluation of refuse disposal methods by various regulatory agencies as well as coal producers. The result of this evaluation was the promulgation of federal regulations dealing with the construction, operation, and final abandonment of coal refuse disposal area. As a consequence of these regulations, the use of the landfill/impoundment method of disposal became in some cases economically unfeasible or technically impossible. US Steel has studied a number of alternative methods of refuse disposal. During an investigation of mechanical dewatering with a pressure filter, portland cement was added to the slurry to solidify the filter cake. Because of the success of the cement addition, it was decided to study the stabilization of fine coal refuse slurry through use of cement-type additives. The goal of the investigation is to develop a process that will use cement-type additives to solidify the refuse slurry into a form that can be handled and stacked with the coarse refuse, thus eliminating the need for slurry impoundments.

• OSTI ID: 6142395
• Journal Information: Trans. Am. Inst. Min. Eng.; (United States), Vol. 270
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
54 ENVIRONMENTAL SCIENCES
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GROUND DISPOSAL
SLURRIES
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COAL INDUSTRY
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CONSTRUCTION
FEASIBILITY STUDIES
MINERAL WASTES
ORE PROCESSING
POLLUTION REGULATIONS
CARBONACEOUS MATERIALS
DISPERSIONS
ENERGY SOURCES
FOSSIL FUELS
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PROCESSING
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