ASTM E382-2012 4522 Standard Test Method for Determination of Crushing Strength of Iron Ore Pellets《铁矿石颗粒破碎强度测定的标准试验方法》.pdf
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1、Designation: E382 12Standard Test Method forDetermination of Crushing Strength of Iron Ore Pellets1This standard is issued under the fixed designation E382; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、 A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method describes a method for determining thecrushing strength of fired iron ore pellets. Cylindrical agglom-erates, briqu
3、ettes, and reduced pellets are not covered by thistest method.1.2 The values as stated in SI units are to be regarded as thestandards. The values in parentheses are given for informationonly.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It
4、is theresponsibility 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. Referenced Documents2.1 ASTM Standards:2E50 Practices for Apparatus, Reagents, and Safety Consid-erations for Chemical An
5、alysis of Metals, Ores, andRelated MaterialsE122 Practice for Calculating Sample Size to Estimate,With Specified Precision, the Average for a Characteristicof a Lot or ProcessE135 Terminology Relating to Analytical Chemistry forMetals, Ores, and Related MaterialsE389 Test Method for Particle Size or
6、 Screen Analysis atNo. 4 (4.75-mm) Sieve and Coarser for Metal-BearingOres and Related MaterialsE877 Practice for Sampling and Sample Preparation of IronOres and Related Materials for Determination of ChemicalComposition3. Terminology3.1 DefinitionsFor definitions of terms used in this testmethod, r
7、efer to Terminology E135.3.2 Descriptions of Terms Specific to this Standard3.2.1 crushing strength, naverage compressive loadneeded to break the pellets in the test sample completely.4. Summary of Test Method4.1 A load is applied on a single pellet at a specified speedof the compressive platen unti
8、l the pellet is broken. Thisprocedure is repeated on all pellets of the test sample.5. Significance and Use5.1 The crushing strength aids the pellet producer in thedetermination of quality problems associated with the produc-tion of pellets.5.2 The crushing strength is often used by the pelletconsum
9、er as a quality indicator for performance in the blastfurnace.6. Apparatus6.1 Loading Unit:6.1.1 The loading capacity shall be 1000 kgf or more (1000kgf = 9.806 kN).6.1.2 The compressive platens shall be installed in parallelplanes. The surface of the platens that are in contact with thesample shall
10、 be made of surface-hardened steel.6.1.3 A device for setting the speed of the compressiveplaten at 0.25 mm/s 6 0.08 mm/s over the entire test periodshall be used.NOTE 1If the platen speed is not constant during the test cycle, resultsmay differ depending upon the test machine used.6.2 Indicating Un
11、it, consists of a load transfer device and aload indicator.6.2.1 Load Transfer Device:6.2.1.1 The transfer of the applied load to the load indicatorshall be by a load cell or by a lever.6.2.1.2 The capacity of the load cell shall be at least 1000kg.6.2.2 Load Indicator:1This test method is under the
12、 jurisdiction of ASTM Committee E01 onAnalytical Chemistry for Metals, Ores, and Related Materials and is the directresponsibility of Subcommittee E01.02 on Ores, Concentrates, and Related Metal-lurgical Materials.Current edition approved June 1, 2012. Published July 2012. Originally approvedin 1968
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- ASTME38220124522STANDARDTESTMETHODFORDETERMINATIONOFCRUSHINGSTRENGTHOFIRONOREPELLETS 铁矿石 颗粒 破碎 强度 测定
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