ASTM E382-2007 Standard Test Method for Determination of Crushing Strength of Iron Ore Pellets《铁矿石颗粒破碎强度的测定用标准试验方法》.pdf
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1、Designation: E 382 07Standard Test Method forDetermination of Crushing Strength of Iron Ore Pellets1This standard is issued under the fixed designation E 382; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revisio
2、n. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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, br
3、iquettes, 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.
4、It 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:2E 50 Practices for Apparatus, Reagents, and Safety Consid-erations for Chemica
5、l Analysis of Metals, Ores, andRelated MaterialsE 135 Terminology Relating to Analytical Chemistry forMetals, Ores, and Related MaterialsE 389 Test Method for Particle Size or Screen Analysis atNo. 4 (4.75-mm) Sieve and Coarser for Metal-BearingOres and Related MaterialsE 877 Practice for Sampling a
6、nd Sample Preparation of IronOres and Related Materials3. Terminology3.1 DefinitionsFor definitions of terms used in this testmethod, refer to Terminology E 135.3.2 Descriptions of Terms Specific to this Standard3.2.1 crushing strength, naverage compressive loadneeded to break the pellets in the tes
7、t sample completely.4. Summary of Test Method4.1 A load is applied on a single pellet at a specified speedof the compressive platen until 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 the
8、determination of quality problems associated with the produc-tion of pellets.5.2 The crushing strength is often used by the pelletconsumer 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)
9、.6.1.2 The compressive platens shall be installed in parallelplanes. The surface of the platens that are in contact with thesample shall be made of surface-hardened steel.6.1.3 A device for setting the speed of the compressiveplaten at 0.25 6 0.08 mm/s over the entire test period shall beused.NOTE 1
10、If the platen speed is not constant during the test cycle, resultsmay differ depending upon the test machine used.6.2 Indicating Unit, 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 ce
11、ll or by a lever.6.2.1.2 The capacity of the load cell shall be at least 1000kg.6.2.2 Load Indicator:6.2.2.1 The applied load shall be indicated either by anelectric indicator (recording chart, meter with needle rider, orother suitable device) for the load cell type, or by a mechanicalindicator (gag
12、e equipped with needle rider or other suitabledevice) for the lever type.1This test method is under the 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-lur
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- ASTME3822007STANDARDTESTMETHODFORDETERMINATIONOFCRUSHINGSTRENGTHOFIRONOREPELLETS 铁矿石 颗粒 破碎 强度 测定 标准 试验
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