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Study of the comminution characteristics of coal by single particle breakage test device

journal contribution
posted on 06.12.2017, 00:00 by Ratikanta Sahoo
Single-particle breakage tests of South Blackwater and Ensham coal from the Bowen Basin area in Queensland were conducted by a computer-monitored twin-pendulum device to measure the energy utilization pattern of the breakage particles. Three particle sizes (-16.0 +13.2 mm, -13.2 +11.2 mm, 0-11.2 + 9.5mm) of each coal were tested by a pendulum device at five input energy levels to measure the specific comminution energy. When particles were tested at constant input energy, the variation of comminution energy between the same size broken particles of Ensham coal was minimal, because Ensham coal is a softer and higher friability coal, which absorbs more input energy than harder coal during breakage tests. For different particle sizes, the specific comminution energy increases linearly with the input energy and the fineness of the breakage products increases with the specific comminution energy.The size distribution graphs are curved but approach linearity in the finer region. At a constant input energy, the twin pendulum breakage product results show that the fineness of the products increases with decrease in particle size and South Blackwater coal produced finer products than the Ensham coal. The t-curves are the family of size distribution curves, which can describe the product size distribution of the breakage particles during single-particle breakage tests.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Volume

23

Issue

3

Start Page

285

End Page

296

Number of Pages

12

ISSN

0272-6351

Location

UK

Publisher

Taylor & Francis

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

James Goldston Faculty of Engineering and Physical Systems; TBA Research Institute;

Era Eligible

Yes

Journal

Particulate science and technology.