ASTM-D6940 › Standard Practice for Measuring Sifting Segregation Tendencies of Bulk Solids
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Scope
1.1 This practice covers an apparatus and procedure for simulating the segregation tendencies of bulk solids by means of the sifting mechanism.
1.2 Temperature- and humidity-sensitive bulk solids may need to be tested at different temperatures and moisture contents, as would happen in an industrial environment.
1.3 The maximum particle size should be limited to 3 mm, to reduce the likelihood of binding the slide gate.
1.4 This standard is not applicable to all bulk solids and segregation mechanisms: while sifting is a common segregation mechanism experienced by many bulk solids, other segregation mechanisms not evaluated by this standard might induce segregation in practice.
1.5 The extent to which segregation will occur in an industrial situation is not only a function of the bulk solid and its tendency to segregate, but also the handling equipment (for example, bin design), process (for example, transfer rates), and environment.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Keywords
bulk solids; segregation; sifting; ICS Number Code 19.120 (Particle size analysis. Sieving)
To find similar documents by ASTM Volume:
04.09 (Soil and Rock (II): D5877 - latest)
To find similar documents by classification:
19.120 (Particle size analysis. Sieving Including test sieves and porosimetry)
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Document Number
ASTM-D6940_D6940M-20
Revision Level
2020 EDITION
Status
Current
Modification Type
New
Publication Date
Jan. 1, 2020
Document Type
Practice
Page Count
5 pages
Committee Number
D18.24