ASTM E389-03
(Test Method)Standard Test Method for Particle Size or Screen Analysis at No. 4 (4.75-mm) Sieve and Coarser for Metal-Bearing Ores and Related Materials
Standard Test Method for Particle Size or Screen Analysis at No. 4 (4.75-mm) Sieve and Coarser for Metal-Bearing Ores and Related Materials
SIGNIFICANCE AND USE
This test method is intended to be used for compliance with compositional specifications for particle size distribution. It is assumed that all who use this procedure will be trained analysts capable of performing common laboratory practices skillfully and safely. It is expected that work will be performed in a properly equipped laboratory and that proper waste disposal procedures will be followed. Follow appropriate quality control practices such as those described in Guide E 882.
SCOPE
1.1 This test method covers the determination of the size distribution by screen analysis of metal-bearing ores and related materials at No. 4 (4.75-mm) sieve and coarser.
1.2 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:E389–03
Standard Test Method for
Particle Size or Screen Analysis at No. 4 (4.75-mm) Sieve
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and Coarser for Metal-Bearing Ores and Related Materials
This standard is issued under the fixed designation E 389; 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.
1. Scope skillfully and safely. It is expected that work will be performed
in a properly equipped laboratory and that proper waste
1.1 This test method covers the determination of the size
disposal procedures will be followed. Follow appropriate
distribution by screen analysis of metal-bearing ores and
quality control practices such as those described in Guide
related materials at No. 4 (4.75-mm) sieve and coarser.
E 882.
1.2 This standard does not purport to address all of the
safety problems, if any, associated with its use. It is the
6. Apparatus and Materials
responsibility the user of this standard to establish appropriate
6.1 U.S. Standard Sieves, conforming to the requirements of
safety and health practices and determine the applicability of
Specification E 11.
regulatory limitations prior to use.
6.2 Sieve Shaker, mechanical or manual.
2. Referenced Documents 6.3 Drying Oven, of approximate size and capable of
maintaining a uniform temperature at 110 6 5°C.
2.1 ASTM Standards:
6.4 Sample Splitter or Riffle, with openings not less than
E 11 Specification for Wire-Cloth Sieves for Testing Pur-
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three times the size of the largest particle.
poses
6.5 Scales and Weights, of adequate accuracy.
E 276 Test Method for Particle Size or Screen Analysis at
6.6 Pans, for holding samples.
No. 4 (4.75-mm) Sieve and Finer for Metal-Bearing Ores
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6.7 Brushes, for cleaning sieves and pans.
and Related Materials
E 882 Guide for Accountability and Quality Control in the
7. Sample Preparation
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Chemical Analysis Laboratory
7.1 If necessary, reduce the sample by means of a sample
3. Terminology splitter or riffle, or by coning and quartering, or by the
alternate-shovel method. Dry at 110 6 5°C to constant weight.
3.1 Definitions: For definitions of terms in this test method,
refer to Terminology E 135.
NOTE 1—The size of the sample is very important in sieve analysis
because the number of particles on a sieve surface affects the probability
4. Summary of Test Method
of any one particle passing through the sieve at a given time. The more
particles there are on a sieve, the greater probability that any one particle
4.1 The sample is passed through a bank of standard sieves
is hindered from getting into a position to pass through the opening.Avoid
by agitation. The screening technique described in this proce-
overloading the sieves.
duremaybeusedonanysolidparticlesthatcanbedriedsothat
7.2 Screen the test sample from 7.1 on a No. 4 (4.75-mm)
sieve blinding does not occur.
sieve. Weigh the material passing the sieve and, if desired,
5. Significance and Use
screen in accordance with Test Method E 276.
5.1 This test method is intended to be used for compliance
8. Procedure
with compositional specifications for particle size distribution.
8.1 Clean the sieves and apparatus by brushing.
It is assumed that all who use this procedure will be trained
8.2 Nesttheselectedsievesandfitapantothebottomsieve.
analysts capable of performing common laboratory practices
Place the material which was retained on the No. 4 (4.75-mm)
sieve from 7.2 in the top sieve. Cover and clamp in the
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This test method is under the jurisdiction of ASTM Committee E01 on
mechanical shaker and shake for the length of time as specified
Analytical Chemistry for Metals, Ores, and Related Materials and is the direct
in 8.3.
responsibility of Subcommittee E01.02 on Ores, Concentrates, and Related Metal-
lurgical Materials. 8.3 Length of Screening Time or End Point—The screening
Current edition approved June 10, 2003. Published October 2003. Originally
time or end point is when additional periods of shaking fail to
approved in 1969. Last previous edition approved in 1998 as E 389 – 93 (1998).
change the results on any sieve used in the test by more than
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Annual Book of ASTM Standards, Vol 14.02.
3
Annual Book of ASTM Standards, Vol 03.05.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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E389–03
0.3 %. For highly friable material the 0.3 % specification may 10.2 Present the data of a screen analysis graphically as a
be meaningless and an acceptable end point shall be deter- cumulative direct plot or a cumulative logarithmic plot. From
mined experimentally.
the plots, the per
...
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