ASTM E389-93(1998)
(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
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 concerns, 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.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: E 389 – 93 (Reapproved 1998)
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
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 5. Significance and Use
1.1 This test method covers the determination of the size 5.1 This test method is intended to be used for compliance
distribution by screen analysis of metal-bearing ores and with compositional specifications for particle size distribution.
related materials at No. 4 (4.75-mm) sieve and coarser. It is assumed that all who use this procedure will be trained
1.2 This standard does not purport to address all of the analysts capable of performing common laboratory practices
safety problems, if any, associated with its use. It is the skillfully and safely. It is expected that work will be performed
responsibility the user of this standard to establish appropriate in a properly equipped laboratory and that proper waste
safety and health practices and determine the applicability of disposal procedures will be followed. Follow appropriate
regulatory limitations prior to use. quality control practices such as those described in Guide
E 882.
2. Referenced Documents
6. Apparatus and Materials
2.1 ASTM Standards:
E 11 Specification for Wire-Cloth Sieves for Testing Pur- 6.1 U.S. Standard Sieves, conforming to the requirements of
poses Specification E 11.
E 276 Test Method for Particle Size or Screen Analysis at 6.2 Sieve Shaker, mechanical or manual.
No. 4 (4.75-mm) Sieve and Finer for Metal-Bearing Ores 6.3 Drying Oven, of approximate size and capable of
and Related Materials maintaining a uniform temperature at 110 6 5°C.
E 882 Guide for Accountability and Quality Control in the 6.4 Sample Splitter or Riffle, with openings not less than
Chemical Analysis Laboratory three times the size of the largest particle.
6.5 Scales and Weights, of adequate accuracy.
3. Terminology
6.6 Pans, for holding samples.
3.1 Definitions: 6.7 Brushes, for cleaning sieves and pans.
3.1.1 particle size—in screen testing, the smallest sieve
7. Sample Preparation
aperture through which the particle has passed and the size of
the following aperture through which the particle fails to pass. 7.1 If necessary, reduce the sample by means of a sample
3.1.2 sieve or screen—a plate, sheet, or woven wire cloth, or splitter or riffle, or by coning and quartering, or by the
other device, with regularly spaced square apertures of uniform alternate-shovel method. Dry at 110 6 5°C to constant weight.
size, mounted in a suitable frame or holder, for use in
NOTE 1—The size of the sample is very important in sieve analysis
separating material according to size. The term sieve or screen
because the number of particles on a sieve surface affects the probability
can be used interchangeably throughout.
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. Summary of Test Method
is hindered from getting into a position to pass through the opening. Avoid
overloading the sieves.
4.1 The sample is passed through a bank of standard sieves
by agitation. The screening technique described in this proce-
7.2 Screen the test sample from 7.1 on a No. 4 (4.75-mm)
dure may be used on any solid particles that can be dried so that
sieve. Weigh the material passing the sieve and, if desired,
sieve blinding does not occur.
screen in accordance with Test Method E 276.
8. Procedure
This test method is under the jurisdiction of ASTM Committee E-1 on
8.1 Clean the sieves and apparatus by brushing.
Analytical Chemistry for Metals, Ores, and Related Materials and is the direct
8.2 Nest the selected sieves and fit a pan to the bottom sieve.
responsibility of Subcommittee E01.02 on Ores, Concentrates, and Related Metal-
Place the material which was retained on the No. 4 (4.75-mm)
lurgical Materials.
Current edition approved Jan. 15, 1993. Published March 1993. Originally
sieve from 7.2 in the top sieve. Cover and clamp in the
published as E 389 – 69. Last previous edition E 389 – 69 (1988).
mechanical shaker and shake for the length of time as specified
Annual Book of ASTM Standards, Vol 14.02.
3 in 8.3.
Annual Book of ASTM Standards, Vol 03.05.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
E 389
8.3 Length of Screening Time or End Point—The screening on or passing through sieve, percent retained on sieve, and
time or end point is when additional periods of shaking fail to percent cumulative.
change the results on any sieve used in the test by more than
10.2 Present the data of a screen analysis graphically as a
0.3 %. For highly friable mat
...
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