ASTMD5757-00标准催化剂、粉体耐磨指数的测定.doc

ASTMD5757-00标准催化剂、粉体耐磨指数的测定.doc1
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Designation: D 5757 -00
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Standard Test Method for
Determ in ati on of Attriti on and Abrasi on of Powdered
Catalysts by Air Jets This test method is under the jurisdiction of ASTM Committee D32 on Catalysts and is the direct responsibility of Subcommittee on PhysicalMechanical Properties.
Current edition approved Oct. 10, 00. Published October 2000. Originally published as D 5757 - 95. Last previous edition D 5757- 95.
This standard is issued under the ?xed designation D 5757; the number immediately following the designation indicates the year of original adoption or, in the caseof revision, the year of last revision. A number in parenthesesindicates the year of last superscript epsilon (e) indicates an editorial changesince the last revision or reapproval.
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Copyright ? ASTM In ter natio nal, 100 Barr Harbor Drive, PO Box C700, West Co nshohocke n,
PA 19428-2959, Un ited States.
Scope
This test method covers the determ in ati on of the relative attrition characteristics of powdered catalysts by means of air jet attrition. It is applicable to spherically or irregularly shaped particles which range in size between 10 and 180 卩 m,have
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skeletal densities between and g/cm (2400 and 3000 3
kg/m ) (see IEEE/ASTM SI-10) and are in soluble in water. Particles less than 20 ^marec