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ASTM D 6941 : 2019

Current
Current

The latest, up-to-date edition.

Standard Practice for Measuring Fluidization Segregation Tendencies of Powders
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

05-01-2019

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 from one another.

1.1This 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 from one another.

1.2A powder sample is fluidized then, after the fluidizing gas is turned off, it is separated into three or more specimens that can be analyzed for parameters of interest. The difference in these parameters between the specimens is an indication of the segregation potential of the powder.

1.3Powders must be capable of being fluidized in order to be tested by this practice.

1.4Temperature- and moisture-sensitive powders may need to be tested at different temperatures and moisture contents, as would happen in an industrial environment.

1.5This 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. Practice D6940 covers another common mechanism: sifting.

1.6The 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.

1.7The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.8This practice offers a set of instructions for performing one or more specific operations. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this practice may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project’s many unique aspects. The word Standard in the title of this document means only that the document has been approved through the ASTM consensus process.

1.9This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.10This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Committee
D 18
DocumentType
Standard Practice
Pages
5
PublisherName
American Society for Testing and Materials
Status
Current
Supersedes

ASTM D 6940 : 2018 Standard Practice for Measuring Sifting Segregation Tendencies of Bulk Solids

ASTM D 2216 : 2005 Standard Test Methods for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass
ASTM D 653 : 2007 Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 2216 : 2010 Standard Test Methods for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass
ASTM D 3740 : 2012 Standard Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction
ASTM D 3740 : 2023 Standard Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction
ASTM D 3740 : 2019 Standard Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction
ASTM D 3740 : 2004 : REV A : EDT 1 Standard Practice for Minimum Requirements for Agencies Engaged in the Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction
ASTM D 6940 : 2003 Standard Practice for Measuring Sifting Segregation Tendencies of Bulk Solids
ASTM D 3740 : 2008 Standard Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction
ASTM D 3740 : 1999 : REV C Standard Practice for Minimum Requirements for Agencies Engaged in the Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction
ASTM D 653 : 2022 Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 653 : 2020 : EDT 1 Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 3740 : 2011 Standard Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction
ASTM D 3740 : 2010 Standard Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction
ASTM D 653 : 2021 : REV A Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 2216 : 2019 Standard Test Methods for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass
ASTM D 3740 : 2004 : REV A Standard Practice for Minimum Requirements for Agencies Engaged in the Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction
ASTM D 3740 : 2001 Standard Practice for Minimum Requirements for Agencies Engaged in the Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction
ASTM D 653 : 2021 Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 653 : 2021 : REV B Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 3740 : 2012 : REV A Standard Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction
ASTM D 3740 : 2003 Standard Practice for Minimum Requirements for Agencies Engaged in the Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction
ASTM D 6940 : 2018 Standard Practice for Measuring Sifting Segregation Tendencies of Bulk Solids
ASTM D 2216 : 1998 Standard Test Method for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass
ASTM D 6940 : 2004 Standard Practice for Measuring Sifting Segregation Tendencies of Bulk Solids
ASTM D 6940 : 2010 Standard Practice for Measuring Sifting Segregation Tendencies of Bulk Solids
ASTM D 2216 : 1971 Standard Method of Laboratory Determination Of Moisture Content Of Soil
ASTM D 3740 : 2004 Standard Practice for Minimum Requirements for Agencies Engaged in the Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction

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