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AS 3880:2017

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Current

The latest, up-to-date edition.

Flow properties of coal
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Language(s)

English

Published date

08-30-2017

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Sets out a series of tests to characterize the flow properties of coal as the basis for designing equipment to achieve reliable flow at the desired flowrate.

This Standard sets out a series of tests to characterize the flow properties of coal as the basis for designing equipment to achieve reliable flow at the desired flowrate. Not all the tests described have to be carried out on a material. The selection of the relevant tests depends on the information sought:(a) Test 1: Yield locus, covers the measurement of the stress necessary to shear a coal under a given load. From this, the coal flow function can be established, which gives indication of the material cohesive strength. This test also gives output of material characteristics such as internal friction angle, which are required for design calculations and computer simulation purpose.(b) Test 2: Wall yield locus, consists of determining the angle of wall friction that describes the interactions between a coal and a selected wall material.(c) Test 3: Bulk density, describes the determination of coal bulk density and compressibility. The bulk density is of particular relevance in assessing the flow properties of a bulk material as often, the cohesive strength of a material will depend on its consolidation state reflected by its bulk density.This Standard is nominally for coal. However, the principles and apparatus may be used for coke and other semi-cohesive particulate materials when a knowledge of flow properties is required.This Standard also provides some guidance on the presentation of the test results for analysis and design. However, it does not cover the application of the results to industrial design.NOTE: Appendix A for more information on application of flow properties results.

Committee
MN-001
DocumentType
Standard
ISBN
978-1-76035-876-1
Pages
38
PublisherName
Standards Australia
Status
Current
Supersedes

Originated as AS 3880—1991.Second edition AS 3880:2017. Originated as AS3880-1991. Second edition AS3880:2017.

AS 1038.1-2001 Coal and coke - Analysis and testing Higher rank coal - Total moisture
AS 3881-2002 Higher rank coal - Size analysis
AS 3774 SUPP 1-1997 Loads on bulk solids containers - Commentary (Supplement 1 to AS 3774-1996)
AS 3774-1996 Loads on bulk solids containers

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