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ASTM International - ASTM D6941-05e1

Standard Practice for Measuring Fluidization Segregation Tendencies of Powders

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Organization: ASTM International
Publication Date: 1 November 2005
Status: inactive
Page Count: 4
ICS Code (Particle size analysis. Sieving): 19.120
significance And Use:

Fluidization segregation can cause vertical segregation within bins used to hold and transport powders. This can affect final product quality in industrial applications.

By measuring a... View More

scope:

1.1 This practice covers an apparatus and procedure for simulating the segregation tendencies of powders by means of the fluidization mechanism.

1.2 Powders must be capable of being fluidized in order to be tested by this practice.

1.3 Temperature- and humidity-sensitive powders may need to be tested at different temperatures and moisture contents, as would happen in an industrial environment. Further, the gas supply (type, temperature, and humidity) should also match the industrial conditions.

1.4 This standard is not applicable to all bulk solids and segregation mechanisms: while fluidization is a common segregation mechanism experienced by many fine powders, 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 powder 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.

Document History

May 1, 2019
Standard Practice for Measuring Fluidization Segregation Tendencies of Powders
1.1 This practice covers an apparatus and procedure for creating several specimens of a powder sample that, if the powder is one that segregates by the fluidization mechanism, should be different...
November 1, 2012
Standard Practice for Measuring Fluidization Segregation Tendencies of Powders
1.1 This practice covers an apparatus and procedure for creating several specimens of a powder sample that, if the powder is one that segregates by the fluidization mechanism, should be different...
November 1, 2005
Standard Practice for Measuring Fluidization Segregation Tendencies of Powders
1.1 This practice covers an apparatus and procedure for simulating the segregation tendencies of powders by means of the fluidization mechanism. 1.2 Powders must be capable of being fluidized in...
ASTM D6941-05e1
November 1, 2005
Standard Practice for Measuring Fluidization Segregation Tendencies of Powders
Fluidization segregation can cause vertical segregation within bins used to hold and transport powders. This can affect final product quality in industrial applications. By measuring a...
January 1, 2004
Standard Practice for Measuring Fluidization Segregation Tendencies of Powders
1.1 This practice covers an apparatus and procedure for simulating the segregation tendencies of powders by means of the fluidization mechanism. 1.2 Powders must be capable of being fluidized in...
July 10, 2003
Standard Practice for Measuring Fluidization Segregation Tendencies of Powders
1.1 This practice covers an apparatus and procedure for simulating the segregation tendencies of powders by means of the fluidization mechanism. 1.2 Powders must be capable of being fluidized in...
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