Title

Coal Comminution by High Pressure Water Jet

Abstract

Conventional crushing technology relies to a large degree on the compressive forces induced in a piece of coal as it is caught between two approaching surfaces. Coal is definitely weaker in tension than it is in compression and this is particularly true for coal which is pervaded by small microcracks and fissures. By taking advantage of these factors and using the technology of high pressure water jet cutting it is possible to make a significant advance in the field of coal and other material disintegration. This paper describes preliminary experiments with high pressure water jets operating on the range of up to 40,000 psi in the system specially designed for this experiment. An evaluation of this system is presented and power requirements are discussed for various size ranges of the crushed coal which can be generated.

Meeting Name

8th International Symposium on Coal Slurry Fuels Preparation and Utilization.

Department(s)

Mining and Nuclear Engineering

Sponsor(s)

US DOE, Pittsburgh Energy Technology Cent, Pittsburgh, PA, USA

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1986 Pittsburgh Energy Technology Center, All rights reserved.

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