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1、BRITISH STANDARD BS EN ISO 5264-2:2002 Incorporating Corrigendum No. 1 Pulps Laboratory beating Part 2: PFI mill method The European Standard EN ISO 5264-2:2002 has the status of a British Standard ICS 85.040 ? Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:51:52 GMT+00:00 2006, Uncontrol
2、led Copy, (c) BSI BS EN ISO 5264-2:2002 This British Standard, having been prepared under the direction of the Materials and Chemicals Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 10 December 2002 BSI 19 February 2003 ISBN
3、0 580 40916 3 National foreword This British Standard is the official English language version of EN ISO 5264-2:2002. It is identical with ISO 5264-2:2002. It supersedes BS EN 25264-2:1994 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PAI/11, Test m
4、ethods for paper, board and pulps, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be fou
5、nd in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are resp
6、onsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep
7、the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to v, a blank page, pages 1 t
8、o 10, the Annex ZA page and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments 14360 Corrigendum No. 1 19 February 2003 Replacing the EN ISO foreword page and incorporating the Annex Z
9、A page Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:51:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 5264-2 November 2002 ICS 85.040Supersedes EN 25264-2:1994 English version Pulps - Laboratory beating - Part 2: PFI mill method (I
10、SO 5264- 2:2002) Ptes - Raffinage de laboratoire - Partie 2: Mthode au moulin PFI (ISO 5264-2:2002) Faserstoffe - Labormahlung - Teil 2: PFI-Mhle Verfahren (ISO 5264-2:2002) This European Standard was approved by CEN on 30 September 2002. CEN members are bound to comply with the CEN/CENELEC Internal
11、 Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. Thi
12、s European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the
13、national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EU
14、ROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2002 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 5264-2:2002 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:51:52 GMT+00:00 200
15、6, Uncontrolled Copy, (c) BSI CORRECTED 2003-02-05 Foreword This document (EN ISO 5264-2:2002) has been prepared by Technical Committee ISO/TC 6 “Paper, board and pulps“ in collaboration with Technical Committee CEN/TC 172 “Pulp, paper and board“, the secretariat of which is held by DIN. This Europe
16、an Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2003, and conflicting national standards shall be withdrawn at the latest by May 2003. This document supersedes EN 25264-2:1994. According to the CEN/CENEL
17、EC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Swede
18、n, Switzerland and the United Kingdom. Endorsement notice The text of ISO 5264-2:2002 has been approved by CEN as EN ISO 5264-2:2002 without any modifications. NOTE Normative references to International Standards are listed in Annex ZA (normative). EN ISO 52642:2002 Licensed Copy: sheffieldun sheffi
19、eldun, na, Mon Nov 20 02:51:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTERNATIONAL STANDARD ISO 5264-2 Second edition 2002-11-15 Reference number ISO 5264-2:2002(E) Pulps Laboratory beating Part 2: PFI mill method Ptes Raffinage de laboratoire Partie 2: Mthode au moulin PFI EN ISO 52642:2002 Li
20、censed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:51:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 52642:2002 ii Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:51:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI OSI -46252002:2)E( ISO 2002 r llAithgs reservde iii Contents Page 1
21、Scope . 1 2Normative references . 1 3Principle 1 4Apparatus and auxiliary materials 1 5Sampling . 2 6Preparation of sample 2 7Procedure . 2 8Test report 4 Annexes APFI mill 5 BControl and maintenance of the PFI mill. 7 CChecking the stability of the PFI mill. 9 Bibliography. 10 EN ISO 52642:2002 iii
22、 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:51:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO -46252:2)E(200 vi ISO 2002 Ar llithgr seresvde Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies).
23、 The work of preparing International Standards is normally carried 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-
24、governmental, in liaison with ISO, also take part in the work. ISO 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
25、3. 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 elements of thi
26、s part of ISO 5264 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 5264-2 was prepared by Technical Committee ISO/TC 6, Paper, board and pulps, Subcommittee SC 5, Test methods and quality specifications
27、for pulps. This second edition cancels and replaces the first edition (ISO 5264-2:1979), which has been technically revised. ISO 5264 consists of the following parts, under the general title Pulps Laboratory beating: Part 1: Valley beater method Part 2: PFI mill method Part 3: Jokro mill method Anne
28、xes A and B form a normative part of this part of ISO 5264. Annex C is for information only. EN ISO 52642:2002 iv Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:51:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI OSI -46252002:2)E( ISO 2002 r llAithgs reservde v Introduction In view of the w
29、idespread use of the following beaters: Valley beater; PFI mill; Jokro mill; it has been decided to provide guidance on the use of these beaters in order to achieve consistency of results with each instrument. Although all three beaters show similar trends in the effect on pulp properties, there is
30、no correlation between the actual results obtained with the different types of beaters. ISO 5264-1 specifies a method of laboratory beating using a Valley beater and ISO 5264-3 a method using a Jokro mill. Beating is a preliminary step in the preparation of laboratory sheets for testing the physical
31、 properties of pulps. In the PFI mill, each beating is performed separately, i.e. a new test portion of unbeaten pulp is taken for each beating. NOTEA complete test of physical properties normally comprises unbeaten pulp and several beatings of the same pulp, where the beating is carried out for dif
32、ferent numbers of roll revolutions. The number of roll revolutions depends on the type of pulp and the beating load. After beating, the drainability is measured according to ISO 5267-1 or ISO 5267-2, and laboratory sheets are prepared according to ISO 5269-1 or ISO 5269-2. EN ISO 52642:2002 v Licens
33、ed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:51:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:51:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ANRETNIITOTS LANDNADRAOSI -46252002:2)E( ISO 2002 r llAithgs reservde 1 Pulps Laboratory bea
34、ting Part 2: PFI mill method 1Scope This part of ISO 5264 specifies a method, using a PFI mill, for the laboratory beating of pulp. The description is limited to the sampling and beating of the pulp, the withdrawal and distribution of samples, and the beating equipment. NOTEBeating is a preliminary
35、step in testing the physical properties of pulp. In principle, this method is applicable to all kinds of chemical and semi-chemical pulps. In practice, the method may not give satisfactory results with certain pulps having extremely long fibres. 2Normative references The following normative document
36、s contain provisions which, through reference in this text, constitute provisions of this part of ISO 5264. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 5264 are encouraged to investi
37、gate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 638, Pulps Determi
38、nation of dry matter content ISO 4119, Pulps Determination of stock concentration ISO 5263, Pulps Laboratory wet disintegration ISO 5267-1, Pulps Determination of drainability Part 1: Schopper-Riegler method ISO 5267-2, Pulps Determination of drainability Part 2: “Canadian Standard” freeness method
39、ISO 7213, Pulps Sampling for testing ISO 14487, Pulps Standard water for physical testing 3Principle A measured amount of pulp at a specified stock concentration is beaten between a roll with bars and a smooth beater housing, both rotating in the same direction, but at different peripheral speeds. 4
40、Apparatus and auxiliary materials Ordinary laboratory equipment and the following. EN ISO 52642:2002 1 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:51:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO -46252:2)E(200 2 ISO 2002 Ar llithgr seresvde 4.1PFI mill, as specified in annex A. Se
41、e normative annex B and informative annex C. 4.2Disintegrator, as specified in ISO 5263. 4.3Balance, capable of weighing the sample with an error of less than . 4.4Standard water, purified to an electrical conductivity at , as specified in ISO 14487. 4.5A reference pulp, kept for beating-control pur
42、poses and stored for a time sufficiently long to avoid further changes in physical properties. The reference pulp should, if possible, be of the same grade as that normally beaten in the beating equipment concerned. Since some pulp grades are not stable, it might be necessary to choose another grade
43、. To avoid the influence of storage time, the reference pulp should be kept at room temperature (not at too high a relative humidity) in a dark and dust-free place. NOTEStored under the recommended conditions, the reference pulp will, in most cases, be stable for approximately 10 years. Changes in t
44、he level of the tensile strength and tear strength values may be an indication that the reference pulp is no longer stable. The stability can be checked by measuring the viscosity of the reference pulp, e.g. twice a year. 5Sampling If the beating is being done to evaluate a lot of pulp, the sample s
45、hall be selected in accordance with ISO 7213. If the beating is done on another type of sample, report the source of the sample and, if possible, the sampling procedure used. Select the test portions so that they are representative of the gross sample received. 6Preparation of sample If the sample i
46、s wet or air-dry, weigh a test portion for the determination of dry-matter content in accordance with ISO 638. If the sample is in the form of an aqueous pulp suspension, determine the dry matter content in accordance with ISO 4119. Take a test portion of the sample corresponding to of oven-dry pulp
47、. Do not cut pulp sheets and avoid the use of cut edges. If the sample is in the form of machine-dried sheets or flash-dried slabs, soak the pulp thoroughly in 0,5 litre of standard water (4.4) at room temperature for not less than . Tear the soaked pulp into pieces approximately in size. It is esse
48、ntial that the pulp sample be thoroughly softened by soaking, to ensure that the preliminary disintegration leads to only a minimal beating effect. Wet pulps may be disintegrated without soaking. 7Procedure 7.1General For each test portion (each degree of beating), carry out the following procedure.
49、 7.2Disintegration Disintegrate the initially wet portion or the soaked test portion as described in ISO 5263. Use standard water (4.4) at to give a total volume of . The mass fraction in the disintegrator (4.2) will then be about . 0,2 g ?0,25 mS/m25 C (30,00,5)g 4 h 25 mm25 mm (205) C (2 00025)ml 1,5 % EN ISO 52642:2002 2 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:51:52 GMT+00:00 2006, Uncontrolled Copy, (