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1、BRITISH STANDARD BS EN ISO 12676:2003 Incorporating Amendment No. 1 to BS ISO 12676:2000 (renumbers the BS ISO as BS EN ISO 12676: 2003) Refractory products Determination of resistance to carbon monoxide The European Standard EN ISO 12676:2003 has the status of a British Standard ICS 81.080 ? Licens
2、ed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:05:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 12676:2003 This British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee
3、and comes into effect on 15 February 2001 BSI 10 March 2004 ISBN 0 580 36924 2 National foreword This British Standard is the official English language version of EN ISO 12676:2003. It is identical with ISO 12676:2000. The UK participation in its preparation was entrusted to Technical Committee RPI/
4、1, Refractories, 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 found in the BSI Cata
5、logue 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 responsible for its co
6、rrect 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 the UK interests i
7、nformed; 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 iv, pages 1 to 6, an inside back cover and a
8、 back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments 1503710 March 2004Implementation of the European Standard Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:05:57 GMT+00:00
9、2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 12676 March 2003 ICS 81.080 English version Refractory products - Determination of resistance to carbon monoxide (ISO 12676:2000) Produits rfractaires - Dtermination de la rsistance au monoxyde de carbone (ISO
10、12676:2000) Feuerfeste Erzeugnisse - Bestimmung der Bestndigkeit gegen Kohlenstoffmonooxid (ISO 12676:2000) This European Standard was approved by CEN on 9 January 2003. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
11、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. This European Standard exists in three official versions (English, Frenc
12、h, 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 national standards bodies of Austria, Belgium, Czech Republic, Denmar
13、k, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovak Republic, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Cen
14、tre: rue de Stassart, 36 B-1050 Brussels 2003 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 12676:2003 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:05:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI I NESO 21:6762
15、003 (E) 2 Foreword The text of ISO 12676:2000 has been prepared by Technical Committee ISO/TC 33 “Refractories“ of the International Organization for Standardization (ISO) and has been taken over as EN ISO 12676:2003 by Technical Committee CEN/TC 187 “Refractory products and materials“, the secretar
16、iat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2003, and conflicting national standards shall be withdrawn at the latest by September 2003. According to the
17、 CEN/CENELEC 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, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Por
18、tugal, Slovak Republic, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 12676:2000 has been approved by CEN as EN ISO 12676:2003 without any modifications. EN ISO 12676:2003 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:05:57 GMT+00:00 2006, Uncontro
19、lled Copy, (c) BSI INTERNATIONAL STANDARD ISO 12676 First edition 2000-11-15 Reference number ISO 12676:2000(E) OSI 2000 Refractory products Determination of resistance to carbon monoxide Produits rfractaires Dtermination de la rsistance au monoxyde de carbone EN ISO 12676:2003 Licensed Copy: sheffi
20、eldun sheffieldun, na, Mon Nov 20 02:05:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO :67621(0002)E ii ISO 0002 All rithgs rreseved DPF discliamer This FDP feli amy ctnonia ededdebm tyfep.seca In aroccecnad tiwh Asebod gnisnecil ycilop, thsi feli may be pritnde ro eivwde but sllah ton eb tideed
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23、. In teh kilnuley evtne ttah a pborlme talerign to ti si f,dnuo saelpe ifnrom teh tneClar Stercearita ta the serddas givne olebw. ISO 0002 llA rithgs rresev.de Unless torehiwse sficep,dei on rapt of tihs buptacilion may be rperdecudo ro tuilidez in any form ro by nay m,snae ele-c trinoc or m,lacinah
24、ce gnidulcni tohppocoyign dna cimrfo,mli tiwtuoh repminoiss ni rwitgni fmor eitreh ISO at teh serddas olebw ro ISOs mme- ebr ydob in the cuotnry fo the rtseuqeer. ISO cporythgi fofiec Caes potsela 56 HC1121- Geneva 02 Te.l + 41 22 947 10 11 Fax + 14 22 479 09 47 E-liam copyrightsio.ch Web wwwi.soc.h
25、 EN ISO 12676:2003 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:05:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 76210002:6)E( ISO 0002 All rithgs rreseved iii ContentsPage 1Scope .1 2Normative references .1 3Terms and definitions 1 4Principle 1 5Apparatus .2 6Sampling .4 7Test piec
26、es 4 8Procedure .4 9Condition of test pieces 5 10Test report 5 EN ISO 12676:2003 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:05:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO :67621(0002)E iv ISO 0002 All rithgs rreseved Foreword ISO (the International Organization for Standardizati
27、on) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical com- mittees. Each member body interested in a subject for which a technical committee has been established has the right to be
28、represented on that committee. International organizations, governmental and non-governmental, in liai- son with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standa
29、rds are drafted in accordance with the rules given in the ISO/IEC Directives, Part 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 cas
30、ting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 12676 was prepared by Technical Committee ISO/T
31、C 33,Refractories. EN ISO 12676:2003 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:05:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ANRETNIITOLAN TSDNADRAISO 76210002:6)E( ISO 0002 All rithgs rreseved 1 Refractory products Determination of resistance to carbon monoxide 1Scope This Intern
32、ational Standard specifies a method for determining the comparative resistance of refractory materials to carbon monoxide disintegration. The test is intended to be more severe than conditions encountered in service in order to enable probable behaviour of refractory materials to be assessed in a re
33、latively short time. 2Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publica- tions do not apply. Howe
34、ver, parties to agreements based on this International Standard are encouraged to investi- 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 an
35、d IEC maintain reg- isters of currently valid International Standards. ISO 5022:1979,Shaped refractory products Sampling and acceptance testing. ISO 8656-1:1988,Refractory products Sampling of raw materials and unshaped products Part 1: Sampling scheme. 3Terms and definitions For the purposes of thi
36、s International Standard, the following terms and definitions apply. 3.1 carbon monoxide disintegration breakdown of a refractory product caused by the deposition of carbon resulting from the dissociation of carbon mon- oxide 3.2 carbon monoxide resistance resistance of a refractory product to carbo
37、n monoxide disintegration when exposed to carbon monoxide under spec- ified conditions of atmosphere and temperature 4Principle Test pieces are exposed to a specified carbon monoxide atmosphere at a controlled temperature for a specified time. NOTECarbon monoxide is toxic and suitable safety precaut
38、ions should be observed when carrying out this test e.g. monitoring the atmosphere around the apparatus to detect leakage of carbon monoxide. EN ISO 12676:2003 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:05:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO :67621(0002)E 2 ISO 0002 All
39、rithgs rreseved 5Apparatus Schematic examples of test apparatus are shown in Figure 1. Key 1Furnace enclosure 2Gas exit tube 3Reaction chamber 4Gas-tight end cap 5Test piece support 6Test pieces 7Gas inlet tube 8Temperature measuring device 9Tube support Figure 1 Examples of test apparatus (schemati
40、c: not to scale) EN ISO 12676:2003 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:05:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 76210002:6)E( ISO 0002 All rithgs rreseved 3 5.1Furnace, of sufficient size to be capable of maintaining the test zone within the reaction chamber (5.2) t
41、o within at. NOTEThe furnace may be fitted with one or more observation ports to enable direct observation of the test samples during the test when a glass reaction chamber is used. 5.2Reaction chamber, comprising a gas-tight tube capable of withstanding a temperature ofand made of a material which
42、does not react with carbon monoxide under the conditions of the test. The chamber shall be of a suitable size to accommodate the test pieces (see clause 7) within the test zone. It shall be fitted with gas inlet and outlet tubes so that the gas passes through the length of the test zone. Provision s
43、hall be made for the insertion of a temperature measuring and recording device (5.3) to be located in the test zone and adjacent to the test pieces. The chamber shall also contain supports on which to rest the test pieces and to prevent debris from falling into the cham- ber in cases of disintegrati
44、on during the test. The tubes and the support shall also be of a material unreactive to car- bon monoxide and capable of withstanding temperatures of up to. NOTE 1Suitable materials for the reaction chamber are certain grades of stainless steel, brass, aluminium, unoxidised inconel metal, glass and
45、ceramic. NOTE 2The reaction chamber may be closed at one end and one of the gas tubes used together with a second tube to carry the test piece support so long as the criteria above are maintained. Depending on the size of the reaction chamber and the number of test pieces, it may be necessary to pro
46、vide support for the tubes themselves. 5.3Temperature measuring and recording device, to enable the temperature of the test zone to be measured to the required accuracy (see 5.1) and to be continuously recorded. 5.4Temperature controller, to control the furnace (5.1) to the required accuracy. 5.5Car
47、bon monoxide, ofpurity. NOTE 1The carbon monoxide may be supplied from gas bottles or a tank depending on the size of the reaction chamber and the gas flow required (see 8.6). If large quantities of CO are required then it may be purified to the above specification and recircu- lated. NOTE 2When car
48、bon monoxide is supplied from a tank, iron carbonyl may be present in the gas and may cause clogging of the inlet tube see 5.7 b). 5.6Nitrogen, of industrial grade. 5.7Means of control of carbon monoxide atmosphere, operating as follows: a)for gas supplied by tank or bottle, the pressure shall be re
49、duced by a regulator made for that purpose and the flow of gas adjusted by means of a sensitive needle or regulating valve. b)a purification train shall be situated after the fine control valve and consist of a drying tower (silica gel, magne- sium perchlorate or phosphorus pentoxide may be used but not sulphuric acid or calcium chloride). If the gas is supplied from a tank follow the drying tower with a scrubbing tower to r