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ASTM E1037-84(1996)e1

(Test Method)

Standard Test Method for Measuring Particle Size Distribution of RDF-5

Standard Test Method for Measuring Particle Size Distribution of RDF-5

SCOPE
1.1 This test method is used to determine the size distribution of a RDF-5 sample. Size is defined as the maximum length of the particle, where length is determined by the RDF-5 manufacturing process. That is, a pellet, cubette, or briquette all have a recognizable length. Figure 1 displays the sizes and shapes of some RDF-5 particles.  
1.2 An air dried RDF-5 sample is separated into categories of differing particle sizes. The size distribution is measured as the weight percentage of each size category. A graph of a function of the cumulative fraction of material by weight finer than particle size versus particle size is plotted. From this plot are taken values which describe the size distribution-the uniformity constant and the characteristic particle size.  
1.3 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.

General Information

Status
Historical
Publication Date
31-Dec-1995
ICS
19.120 - Particle size analysis. Sieving
Technical Committee
D34 - Waste Management
Drafting Committee
D34.03 - Treatment, Recovery and Reuse
Current Stage
Ref Project

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Replaced By
ASTM E1037-84(2004) - Standard Test Method for Measuring Particle Size Distribution of RDF-5
Effective Date
01-Apr-2004

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ASTM E1037-84(1996)e1 - Standard Test Method for Measuring Particle Size Distribution of RDF-5ASTM E1037-84(1996)e1 - Standard Test Method for Measuring Particle Size Distribution of RDF-5
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ASTM E1037-84(1996)e1 - Standard Test Method for Measuring Particle Size Distribution of RDF-5
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
e1
Designation: E 1037 – 84 (Reapproved 1996)
Standard Test Method for
Measuring Particle Size Distribution of RDF-5
This standard is issued under the fixed designation E 1037; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
e NOTE—Editorial changes were made throughout in October 1996.
1. Scope
1.1 This test method is used to determine the size distribu-
tion of a RDF-5 sample. Size is defined as the maximum length
of the particle, where length is determined by the RDF-5
manufacturing process. That is, a pellet, cubette, or briquette
all have a recognizable length. Fig. 1 displays the sizes and
shapes of some RDF-5 particles.
1.2 An air dried RDF-5 sample is separated into categories
of differing particle sizes. The size distribution is measured as
the weight percentage of each size category. A graph of a
function of the cumulative fraction of material by weight finer
than particle size versus particle size is plotted. From this plot
are taken values which describe the size distribution—the
uniformity constant and the characteristic particle size.
1.3 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 appro-
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
2. Terminology
2.1 Definition:
2.1.1 RDF-5—solid fuel derived from municipal solid
waste in which the processed combustible fraction is densified
(compressed) into the form of pellets, cubettes or briquettes.
FIG. 1 RDF-5 Sizes
3. Significance and Use
4. Apparatus
3.1 The particle size distribution of RDF-5 strongly influ-
ences the storage and handling characteristics of the fuel. Small 4.1 Labelled Containers, used to hold the particles which
are separated by size. Appropriate containers are beakers or
particles tend to block flow through storage bins and feed
hoppers, although correct bin and hopper designs will alleviate pans labelled “$70 mm”, “$60 mm − <70 mm”, etc. The tare
weight of each container shall be recorded to 0.1 g.
this problem of blockage.
3.2 This test method of measuring size by hand allows 4.2 Scale, capable of weighing the sample and container
with an accuracy of 0.1 g.
accurate description of RDF-5 particle size distribution. Mea-
surement by hand is superior to sieving techniques, wherein 4.3 Vernier Calipers, a length-measuring instrument having
an accuracy of 0.1 mm.
particles may be broken by the size separation technique itself.
However, hand measurement is more time-consuming than
5. Procedure
sieving techniques.
5.1 The sample shall weigh 1.0 6 0.1 kg (2.2 6 0.2 lb)
unless otherwise specified. Record the weight of the sample to
This test method is under the jurisdiction of ASTM Committee D-34 on Waste
the nearest 0.1 g.
Management and is the direct responsibility of Subcommittee D34.06 on Recovery
5.2 Fig. 2Beginning with the largest particles, measure the
and Reuse.
Current edition approved Dec. 28, 1984. Published June 1985. length of each particle in the sample. Separate the particles into
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...

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Standard Test Method for Measuring Particle Size Distribution of RDF-5

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4.1 The particle size distribution of RDF-5 strongly influences the storage and handling characteristics of the fuel. Small particles tend to block flow through storage bins and feed hoppers, although correct bin and hopper designs will alleviate this blockage problem.  
4.2 This test method for measuring size manually allows for accurate description of RDF-5 particle size distribution. Manual measurement is superior to sieving techniques, wherein particles may be broken by the size separation technique itself. However, hand measurement is more time consuming than sieving techniques.
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1.1 This test method is used to determine the size distribution of a RDF-5 sample. Size is defined as the maximum length of the particle, where length is determined by the RDF-5 manufacturing process. That is, a pellet, cubette, or briquette all have a recognizable length. Fig. 1 displays the sizes and shapes of some RDF-5 particles.
FIG. 1 RDF-5 Sizes  
1.2 An air-dried RDF-5 sample is separated into categories of differing particle sizes. The size distribution is measured as the weight percentage of each size category. A graph of a function of the cumulative fraction of material by weight finer than particle size versus particle size is plotted. From this plot are taken values which describe the size distribution—the uniformity constant and the characteristic particle size.  
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This 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.

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4.1 This test method can be used to determine particle size distributions for material specifications, manufacturing control, and research and development work in the particle size range usually encountered in fluidizable cracking catalysts.
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3.1 When evaluating the particle size information, if the procedures of the data processing are not available, the user of the data must make assumptions concerning the reported data in the event of analytical inconsistencies. In order for different data sets to be compared it is crucial that the parties report the analytical techniques and methods or procedures for evaluating, calculating, compiling or otherwise processing the data to be reported.  
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4.1 The method of powder dispersion in a liquid has a significant effect on the results of a particle size distribution analysis. The analysis will show a too-coarse, unstable, or nonrepeatable distribution if the powder has not been dispersed adequately. It is therefore important that parties wishing to compare their analyses use the same dispersion technique.  
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