1、BRITISH STANDARDBS EN ISO 12676:2003 Incorporating amendment no. 1 to BS ISO 12676:2000 (renumbers the BS ISO as BS EN ISO 12676: 2003) and corrigendum no. 1Refractory products Determination of resistance to carbon monoxideThe European Standard EN ISO 12676:2003 has the status of a British StandardI
2、CS 81.080g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN ISO 12676:2003This British Standard was published under the authority of the Standard
3、s Committee and comes into effect on 15 February 2001 BSI 2007ISBN 978 0 580 50915 5National forewordThis British Standard is the UK implementation of EN ISO 12676:2003. It is identical with ISO 12676:2000. It supersedes BS 1902-3.10:1981, which is withdrawn.The UK participation in its preparation w
4、as entrusted to Technical Committee RPI/1, Refractories.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Complia
5、nce with a British Standard cannot confer immunity from legal obligations.Amendments issued since publicationAmd. No. Date Comments15037 10 March 2004 Implementation of the European Standard17189 Corrigendum No. 131 July 2007 Addition of supersession detailsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE
6、 NORMEN ISO 12676March 2003ICS 81.080English versionRefractory products - Determination of resistance to carbonmonoxide (ISO 12676:2000)Produits rfractaires - Dtermination de la rsistance aumonoxyde de carbone (ISO 12676:2000)Feuerfeste Erzeugnisse - Bestimmung der Bestndigkeitgegen Kohlenstoffmonoo
7、xid (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 EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bi
8、bliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a
9、 CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Nether
10、lands, Norway, Portugal, Slovak Republic, Spain, Sweden, Switzerland andUnited Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2003 CEN All rights of exploitation in any form and by any m
11、eans reservedworldwide for CEN national Members.Ref. No. EN ISO 12676:2003 EI NESO 21:6762003 (E)2ForewordThe 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 takenover as EN ISO 12676:200
12、3 by Technical Committee CEN/TC 187 “Refractory products andmaterials“, the secretariat of which is held by BSI.This European Standard shall be given the status of a national standard, either by publication ofan identical text or by endorsement, at the latest by September 2003, and conflicting natio
13、nalstandards shall be withdrawn at the latest by September 2003.According to the CEN/CENELEC Internal Regulations, the national standards organizations ofthe following countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece,
14、 Hungary, Iceland, Ireland, Italy,Luxembourg, Malta, Netherlands, Norway, Portugal, Slovak Republic, Spain, Sweden,Switzerland and the United Kingdom.Endorsement noticeThe text of ISO 12676:2000 has been approved by CEN as EN ISO 12676:2003 without anymodifications.EN ISO 12676:2003INTERNATIONALSTAN
15、DARDISO12676First edition2000-11-15Reference numberISO 12676:2000(E) OSI 2000Refractory products Determination ofresistance to carbon monoxideProduits rfractaires Dtermination de la rsistance au monoxyde decarboneEN ISO 12676:2003ISO :67621(0002)Eii ISO 0002 All rithgs rresevedDPF discliamerThis FDP
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18、ercnoi rapmateersweer tpodezimi for pritn.gni vErey cera sah eebn tkane to rusnee ttah the feli is tiusbael for ues by ISO mrebme seidob. In teh kilnuley evtnettah a pborlme talerign to ti si f,dnuo saelpe ifnrom teh tneClar Stercearita ta the serddas givne olebw. ISO 0002llA rithgs rresev.de Unless
19、 torehiwse sficep,dei on rapt of tihs buptacilion may be rperdecudo ro tuilidez in any form ro by nay m,snae ele-ctrinoc or m,lacinahce 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 cp
20、orythgi fofiecCaes potsela 56 HC1121- Geneva 02Te.l + 41 22 947 10 11Fax + 14 22 479 09 47E-liam copyrightsio.chWeb wwwi.soc.hEN ISO 12676:2003ISO 76210002:6)E( ISO 0002 All rithgs rreseved iiiContents Page1 Scope . 12 Normative references . 13 Terms and definitions 14 Principle 15 Apparatus . 26 Sa
21、mpling . 47 Test pieces 48 Procedure . 49 Condition of test pieces 510 Test report 5EN ISO 12676:2003ISO :67621(0002)Eiv ISO 0002 All rithgs rresevedForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISOmember bodies). The work of
22、 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 theright to be represented on that committee. International organizations, governmental and non-governmental
23、, 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 Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.Draft Inter
24、national 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 this International
25、Standard may be the subject ofpatent 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/TC 33, Refractories.EN ISO 12676:2003ANRETNIITOLAN TSDNADRA ISO 76210002:6)E( ISO 0002 All rithgs rres
26、eved 1Refractory products Determination of resistance to carbonmonoxide1 ScopeThis International Standard specifies a method for determining the comparative resistance of refractory materials tocarbon monoxide disintegration.The test is intended to be more severe than conditions encountered in servi
27、ce in order to enable probable behaviourof refractory materials to be assessed in a relatively short time.2 Normative referencesThe following normative documents contain provisions which, through reference in this text, constitute provisions ofthis International Standard. For dated references, subse
28、quent amendments to, or revisions of, any of these publica-tions do not apply. However, 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 undatedreferences, th
29、e latest edition of the normative document referred to applies. Members of ISO and 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
30、products Part 1: Samplingscheme.3 Terms and definitionsFor the purposes of this International Standard, the following terms and definitions apply.3.1carbon monoxide disintegrationbreakdown of a refractory product caused by the deposition of carbon resulting from the dissociation of carbon mon-oxide3
31、.2carbon monoxide resistanceresistance of a refractory product to carbon monoxide disintegration when exposed to carbon monoxide under spec-ified conditions of atmosphere and temperature4 PrincipleTest pieces are exposed to a specified carbon monoxide atmosphere at a controlled temperature for a spe
32、cified time.NOTE Carbon monoxide is toxic and suitable safety precautions should be observed when carrying out this test e.g. monitoringthe atmosphere around the apparatus to detect leakage of carbon monoxide.EN ISO 12676:2003ISO :67621(0002)E2 ISO 0002 All rithgs rreseved5 ApparatusSchematic exampl
33、es of test apparatus are shown in Figure 1.Key1 Furnace enclosure2 Gas exit tube3 Reaction chamber4 Gas-tight end cap5 Test piece support6Testpiecs7Gasinletube8 Temperature measuring device9 Tube supportFigure 1 Examples of test apparatus (schematic: not to scale)EN ISO 12676:2003ISO 76210002:6)E( I
34、SO 0002 All rithgs rreseved 35.1 Furnace, of sufficient size to be capable of maintaining the test zone within the reaction chamber (5.2) to withinat .NOTE The furnace may be fitted with one or more observation ports to enable direct observation of the test samples during thetest when a glass reacti
35、on chamber is used.5.2 Reaction chamber, comprising a gas-tight tube capable of withstanding a temperature of and made ofa material which does not react with carbon monoxide under the conditions of the test. The chamber shall be of asuitable size to accommodate the test pieces (see clause 7) within
36、the test zone. It shall be fitted with gas inlet andoutlet tubes so that the gas passes through the length of the test zone. Provision shall be made for the insertion of atemperature measuring and recording device (5.3) to be located in the test zone and adjacent to the test pieces. Thechamber shall
37、 also contain supports on which to rest the test pieces and to prevent debris from falling into the cham-ber in cases of disintegration 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 1 Suit
38、able materials for the reaction chamber are certain grades of stainless steel, brass, aluminium, unoxidised inconelmetal, glass and ceramic.NOTE 2 The reaction chamber may be closed at one end and one of the gas tubes used together with a second tube to carry thetest piece support so long as the cri
39、teria above are maintained. Depending on the size of the reaction chamber and the number oftest pieces, it may be necessary to provide support for the tubes themselves.5.3 Temperature measuring and recording device, to enable the temperature of the test zone to be measured tothe required accuracy (s
40、ee 5.1) and to be continuously recorded.5.4 Temperature controller, to control the furnace (5.1) to the required accuracy.5.5 Carbon monoxide,of purity.NOTE 1 The carbon monoxide may be supplied from gas bottles or a tank depending on the size of the reaction chamber and thegas flow required (see 8.
41、6). If large quantities of CO are required then it may be purified to the above specification and recircu-lated.NOTE 2 When carbon monoxide is supplied from a tank, iron carbonyl may be present in the gas and may cause clogging of theinlet tube see 5.7 b).5.6 Nitrogen, of industrial grade.5.7 Means
42、of control of carbon monoxide atmosphere, operating as follows:a) for gas supplied by tank or bottle, the pressure shall be reduced by a regulator made for that purpose and the flowof gas adjusted by means of a sensitive needle or regulating valve.b) a purification train shall be situated after the
43、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 issupplied from a tank follow the drying tower with a scrubbing tower to remove iron carbonyl (e.g. containing so-dium hydr
44、oxide pellets).c) the gas flow rate shall be measured using a suitable non-aqueous flowmeter fitted between the purification trainand the reaction chamber inlet tube.5.8 Reaction chamber pressure control, a bubbling bottle or sensitive pressure gauge shall be fitted to the outletof the reaction cham
45、ber to ensure that a positive pressure, of at least of water, is maintained throughout thetest.5.9 Gas analyser, capable of determining the carbon dioxide content of the exhaust gas to ensure that it containsa maximum of carbon dioxide.5.10 Drying oven, capable of maintaining a temperature of .5.11
46、Desiccator.10C 500C500C500C99 %20 mm5%110C 5CEN ISO 12676:2003ISO :67621(0002)E4 ISO 0002 All rithgs rreseved5.12 Timer.5.13 Photographic equipment.6 SamplingThe number of items to be tested shall be determined in accordance with ISO 5022 for shaped products orISO 8656-1 for unshaped products or a s
47、ampling plan agreed between the interested parties.7 Test pieces7.1 GeneralTest pieces shall be rectangular prisms with a , or square cross-section. The length of the prisms shall be agreed between the interested parties but shall be a minimum of .NOTE 1 It is recommended that only test pieces from
48、one material are included in each test to avoid the behaviour of one mate-rial affecting the behaviour of another.NOTE 2 Care should be taken when cutting the test pieces from larger test items that the cut surfaces are not contaminated withiron or iron-containing alloy which may originate from the
49、type of cutting equipment used.7.2 Fired materialsOnly one test piece shall be taken from each test item and cut so that a minimum of three faces are the original sur-faces of the test item.7.3 Unfired materialsTest pieces of unfired materials shall be prepared according to the manufacturers instructions or in an appropriatemanner according to the type of material. Alternatively, test pieces may be cut from larger prepared shapes.The test pieces shall be fired in an oxidizing atmosphere at a rate not exceeding to
