BS-ISO-2926-2005.pdf
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1、BRITISH STANDARD BS ISO 2926:2005 Aluminium oxide used for the production of primary aluminium Particle size analysis for the range 45 4 4m to 150 4 4m Method using electroformed sieves ICS 71.100.10 ? Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 05:43:51 GMT+00:00 2006, Uncontrolled Copy,
2、 (c) BSI BS ISO 2926:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 13 April 2005 BSI 13 April 2005 ISBN 0 580 45823 7 National foreword This British Standard reproduces verbatim ISO 2926:2005 and implements it as the UK national standa
3、rd. It supersedes BS 4140-21:1980 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee CII/24, Raw materials for the aluminium industry, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to it
4、s secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue o
5、r of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the tex
6、t; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cov
7、er, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 7 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov
8、 27 05:43:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 2926:2005(E) OSI 5002 INTERNATIONAL STANDARD ISO 2926 Second edition 2005-03-15 Aluminium oxide used for the production of primary aluminium Particle size analysis for the range 45 m to 150 m Method using electroformed siev
9、es Oxyde daluminium utilis pour la production daluminium primaire Analyse granulomtrique dans la gamme 45 m 150 m Mthode par emploi de tamis lectroforms BS ISO 2926:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 05:43:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:6292 O5002(E) DPlcsi
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14、y ttseuqer ehe.r ISO cirypothg fofice saCe tsopale 65 eneG 1121-HC 02 av leT. 4 + 10 947 22 1 11 xaF0 947 22 14 + 9 74 E-mail coirypthgiso.o gr We bwww.is.o gro Pulbisdehi n Switlrez dna ii ISO 5002 Allr ithgsr esedevr BS ISO 2926:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 05:43:51
15、GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:6292 O5002(E) I SO 5002 All irthgs ersedevr iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carrie
16、d out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. IS
17、O collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare Internatio
18、nal Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the ele
19、ments of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 2926 was prepared by Technical Committee ISO/TC 226, Materials for the production of primary aluminium. This second edition cancels and replaces the first
20、edition (ISO 2926:1974), which has been technically revised to reflect modern industry practice, and has substantially improved accuracy and precision over the first edition. The major changes are: the mandatory use of electroformed sieves instead of woven wire sieves; the mandatory use of a sieve s
21、haker with a vertical hammer-drop action concurrent with the lateral sieving action; a different set of nominal aperture sizes to correspond to modern industry practice; weighing of fractions “on-sieve“ rather than “off-sieve“; changed sample preparation (no pre-drying); removal of the limit of 50 %
22、 atmospheric relative humidity; calculation of percentages using a “mass recovered“ denominator rather than “original mass“. BS ISO 2926:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 05:43:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:6292 O5002(E) iv I SO 5002 All irthgs ersedevr I
23、ntroduction This International Standard is based on AS 2879.6-1995 prepared by Standards Australia. BS ISO 2926:2005 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 05:43:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTENRATIONAL TSANDADR IS:6292 O5002(E) I SO 5002 All irthgs ersedevr 1 Alum
24、inium oxide used for the production of primary aluminium Particle size analysis for the range 45 m to 150 m Method using electroformed sieves 1 Scope This International Standard specifies a dry sieve method using electroformed sieves for determining the mass distribution of the particle sizes in alu
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