ASTM E382-12
(Test Method)Standard Test Method for Determination of Crushing Strength of Iron Ore Pellets
Standard Test Method for Determination of Crushing Strength of Iron Ore Pellets
SIGNIFICANCE AND USE
The crushing strength aids the pellet producer in the determination of quality problems associated with the production of pellets.
The crushing strength is often used by the pellet consumer as a quality indicator for performance in the blast furnace.
SCOPE
1.1 This test method describes a method for determining the crushing strength of fired iron ore pellets. Cylindrical agglomerates, briquettes, and reduced pellets are not covered by this test method.
1.2 The values as stated in SI units are to be regarded as the standards. The values in parentheses are given for information only.
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.
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Designation: E382 − 12
Standard Test Method for
1
Determination of Crushing Strength of Iron Ore Pellets
This standard is issued under the fixed designation E382; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3.2 Definitions of Terms Specific to This Standard:
3.2.1 crushing strength, n—average compressive load
1.1 This test method describes a method for determining the
needed to break the pellets in the test sample completely.
crushing strength of fired iron ore pellets. Cylindrical
agglomerates, briquettes, and reduced pellets are not covered
4. Summary of Test Method
by this test method.
4.1 A load is applied on a single pellet at a specified speed
1.2 The values as stated in SI units are to be regarded as the
of the compressive platen until the pellet is broken. This
standards. The values in parentheses are given for information
procedure is repeated on all pellets of the test sample.
only.
1.3 This standard does not purport to address all of the
5. Significance and Use
safety concerns, if any, associated with its use. It is the
5.1 The crushing strength aids the pellet producer in the
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- determination of quality problems associated with the produc-
tion of pellets.
bility of regulatory limitations prior to use.
5.2 The crushing strength is often used by the pellet
2. Referenced Documents
consumer as a quality indicator for performance in the blast
2
2.1 ASTM Standards:
furnace.
E50 Practices for Apparatus, Reagents, and Safety Consid-
erations for Chemical Analysis of Metals, Ores, and
6. Apparatus
Related Materials
6.1 Loading Unit:
E122 Practice for Calculating Sample Size to Estimate,With
Specified Precision, the Average for a Characteristic of a 6.1.1 The loading capacity shall be 1000 kgf or more (1000
kgf = 9.806 kN).
Lot or Process
E135 Terminology Relating to Analytical Chemistry for 6.1.2 The compressive platens shall be installed in parallel
planes. The surface of the platens that are in contact with the
Metals, Ores, and Related Materials
E389 TestMethodforParticleSizeorScreenAnalysisatNo. sample shall be made of surface-hardened steel.
6.1.3 A device for setting the speed of the compressive
4 (4.75-mm) Sieve and Coarser for Metal-Bearing Ores
and Related Materials platen at 0.25 mm/s 6 0.08 mm/s over the entire test period
shall be used.
E877 Practice for Sampling and Sample Preparation of Iron
Ores and Related Materials for Determination of Chemi-
NOTE 1—If the platen speed is not constant during the test cycle, results
cal Composition
may differ depending upon the test machine used.
3. Terminology 6.2 Indicating Unit, consists of a load transfer device and a
load indicator.
3.1 Definitions—For definitions of terms used in this test
6.2.1 Load Transfer Device:
method, refer to Terminology E135.
6.2.1.1 The transfer of the applied load to the load indicator
shall be by a load cell or by a lever.
1
This test method is under the jurisdiction of ASTM Committee E01 on
Analytical Chemistry for Metals, Ores, and Related Materials and is the direct 6.2.1.2 The capacity of the load cell shall be at least 1000
responsibility of Subcommittee E01.02 on Ores, Concentrates, and Related Metal-
kg.
lurgical Materials.
6.2.2 Load Indicator:
CurrenteditionapprovedJune1,2012.PublishedJuly2012.Originallyapproved
6.2.2.1 The applied load shall be indicated either by an
in 1968. Last previous edition approved in 2007 as E382 – 07. DOI: 10.1520/
E0382-12.
electric indicator (recording chart, meter with needle rider, or
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
other suitable device) for the load cell type, or by a mechanical
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
indicator (gage equipped with needle rider or other suitable
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. device) for the lever type.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
E382 − 12
6.2.2.2 When using a load cell, the chart recorder response 9.2 Apply the load at a constant rate of 0.25 mm/s 6 0.08
time shall be 1.0 s or less for a full-scale deflection. mm/s throughout the test period.
6.2.2.3 The minimum graduation shall be 1/100 of the full
9.3 Record the maximum load at which each test piece
scale.
breaks completely.
6.2.2.4 The testing machine shall be calibrated
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:E382–07 Designation:E382–12
Standard Test Method for
1
Determination of Crushing Strength of Iron Ore Pellets
This standard is issued under the fixed designation E382; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 Thistestmethoddescribesamethodfordeterminingthecrushingstrengthoffiredironorepellets.Cylindricalagglomerates,
briquettes, and reduced pellets are not covered by this test method.
1.2 The values as stated in SI units are to be regarded as the standards.The values in parentheses are given for information only.
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.
2. Referenced Documents
2
2.1 ASTM Standards:
E50 Practices forApparatus, Reagents, and Safety Considerations for ChemicalAnalysis of Metals, Ores, and Related Materials
E122 Practice for Calculating Sample Size to Estimate, With Specified Precision, the Average for a Characteristic of a Lot or
Process
E135 Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials
E389 Test Method for Particle Size or Screen Analysis at No. 4 (4.75-mm) Sieve and Coarser for Metal-Bearing Ores and
Related Materials
E877 Practice for Sampling and Sample Preparation of Iron Ores and Related Materials for Determination of Chemical
Composition
3. Terminology
3.1 Definitions—For definitions of terms used in this test method, refer to Terminology E135.
3.2 Descriptions of Terms Specific to this Standard
3.2.1 crushing strength, n—average compressive load needed to break the pellets in the test sample completely.
4. Summary of Test Method
4.1 A load is applied on a single pellet at a specified speed of the compressive platen until the pellet is broken. This procedure
is repeated on all pellets of the test sample.
5. Significance and Use
5.1 The crushing strength aids the pellet producer in the determination of quality problems associated with the production of
pellets.
5.2 The crushing strength is often used by the pellet consumer as a quality indicator for performance in the blast furnace.
6. Apparatus
6.1 Loading Unit:
6.1.1 The loading capacity shall be 1000 kgf or more (1000 kgf = 9.806 kN).
6.1.2 The compressive platens shall be installed in parallel planes. The surface of the platens that are in contact with the sample
shall be made of surface-hardened steel.
6.1.3 A device for setting the speed of the compressive platen at 0.25 mm/s 6 0.08 mm/s over the entire test period shall be
used.
1
This test method is under the jurisdiction of ASTM Committee E01 on Analytical Chemistry for Metals, Ores, and Related Materials and is the direct responsibility of
Subcommittee E01.02 on Ores, Concentrates, and Related Metallurgical Materials.
Current edition approved June 1, 2007.2012. Published June 2007.July 2012. Originally approved in 1968. Last previous edition approved in 20022007 as E382 – 027.
DOI: 10.1520/E0382-07.10.1520/E0382-12.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
E382–12
NOTE 1—If the platen speed is not constant during the test cycle, results may differ depending upon the test machine used.
6.2 Indicating Unit, consists of a load transfer device and a load indicator.
6.2.1 Load Transfer Device:
6.2.1.1 The transfer of the applied load to the load indicator shall be by a load cell or by a lever.
6.2.1.2 The capacity of the load cell shall be at least 1000 kg.
6.2.2 Load Indicator:
6.2.2.1 The applied load shall be indicated either by an electric indicator (recording chart, meter with needle rider, or other
suitable device) for the load cell type, or by a mechanical indicator (gage equipped with needle rider or other suitable device) for
the lever type.
6.2.2.2 When using a load cell, the chart recorder response time shall be 1
...
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