1、BRITISH STANDARD BS 6043-4.0: 1991 Methods of sampling and test for Carbonaceous materials used in aluminium manufacture Part 4: Cold ramming pastes Section 4.0 General introduction BS6043-4.0:1991 This British Standard, having been prepared under the directionof the Chemicals Standards Policy Commi
2、ttee, waspublished under the authorityof the Standards Boardand comes intoeffecton 31October 1991 BSI 10-1999 The following BSI references relate to the work on this standard: Committee reference CIC/24 Draft for comment 90/54840 DC ISBN 0 580 19725 5 Committees responsible for this British Standard
3、 The preparation of this British Standard was entrusted by the Chemicals Standards Policy Committee (CIC/-) to Technical Committee CIC/24, upon which the following bodies were represented: Aluminium Federation British Ceramic Research Ltd. Chemical Industries Association Institute of Petroleum Refra
4、ctories Association of Great Britain Amendments issued since publication Amd. No. Date CommentsBS6043-4.0:1991 BSI 10-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Sampling and testing 1 Figure 1 Flow chart for tests on baked rammed paste in accordance with B
5、S6043-4 2 Table 1 List of Sections of BS 6043-4 1 Table 2 Additional British Standards to be used with Sections of BS 6043-4 1 Publication(s) referred to Inside back coverBS6043-4.0:1991 ii BSI 10-1999 Foreword This Section of BS 6043 has been prepared under the direction of the Chemicals Standards
6、Policy Committee. It serves as an introduction to BS6043-4, the general structure of which is given inTable 1. There are 14 Sections of Part 4, published separately. There are no corresponding International Standards; however, it is intended, upon publication of these Sections of BS 6043-4, that the
7、y be offered to the International Organization for Standardization (ISO) for possible adoption as International Standards. Cold ramming pastes are currently undergoing technological development, and the tests described in BS 6043-4 are based on the characteristics of those products which have found
8、widest commercial acceptance. The most widely used category of cold ramming pastes has binders based on coal tar, or to a lesser extent on other bituminous materials, and it is to this category that the Sections of BS 6043-4 are specifically applicable. The other principal category of cold ramming p
9、astes has binders comprising one or more synthetic resin. The differences in the characteristics of the various types of resin which are employed preclude the general application of some Sections of BS 6043-4 to both these categories of cold ramming pastes. This applies particularly to those Section
10、s of BS 6043-4 in which a solvent is used to dissolve the binder. For this reason, BS 6043-4.2, BS 6043-4.3 and BS 6043-4.5 are applicable only to cold ramming pastes made with coal tar or other bituminous binders. A British Standard does not purport to include all the necessary provisions of a cont
11、ract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages1 and2, an inside back cov
12、er and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS6043-4.0:1991 BSI 10-1999 1 1 Scope This Section of BS6043 outlines, inTable 1, the structure of BS6043-4 and g
13、ives guidance on the relationships of the various Sections concerned. NOTEThe titles of the publications referred to in this standard are listed on the inside back cover. 2 Sampling and testing 2.1 General Methods of sampling are given in BS 6043-4.1, which is referred to by all the test methods des
14、cribed in BS 6043-4.2 to BS 6043-4.13, and reference to which is essential. NOTEOther essential references to British Standards are made in several Sections of BS 6043-4 and these are given inTable 2. 2.2 Ramming and baking The conditions of ramming and baking have an important effect on the subsequ
15、ent performance of the rammed baked paste. Therefore, in carrying out tests on rammed baked samples, it is necessary to refer to the detailed descriptions of the methods for ramming and baking given in BS6043-4.6 and BS6043-4.7. 2.3 Sequence of testing In conducting the series of tests which measure
16、 the characteristics of baked rammed pastes, advantage may be gained by making the determinations in a sequence which allows the baked test pieces to be used for more than one test. A suitable sequence of testing is given inFigure 1. Table 1 List of Sections of BS 6043-4 Table 2 Additional British S
17、tandards to be used with Sections of BS 6043-4 Section number Title Section 4.0 Section 4.1 Section 4.2 Section 4.3 Section 4.4 Section 4.5 Section 4.6 Section 4.7 Section 4.8 Section 4.9 Section 4.10 Section 4.11 Section 4.12 a Section 4.13 General introduction Methods of sampling Determination of
18、effective binder content and aggregate content by extraction with quinoline; determination of aggregate size distribution Determination of aggregate size distribution after extraction by dichloromethane Determination of volatile matter content of unbaked paste Determination of water content of unbak
19、ed paste Determination of maximum rammed apparent density Preparation of baked rammed test pieces and determination of baked apparent density, change in volume and loss in mass Determination of electrical resistivity of baked rammed paste Determination of the cold crushing strength of rammed paste D
20、etermination of the apparent porosity of baked rammed paste Determination of the coefficient of thermal expansion of baked rammed paste Determination of the thermal conductivity of baked rammed paste Determination of the ash of baked rammed paste a In preparation Section of BS 6043-4 Additional Sect
21、ions of BS6043 and other British Standards, reference to which is essential Sections 4.2 to 4.13 Section 4.7 Section 4.8 Section 4.9 Section 4.10 Section 4.11 Section 4.12 a Section 4.13 BS 6043-4.1 BS 6043-4.6 BS 6043-4.6 and BS 6043-4.7 BS 6043-4.6 and BS 6043-4.7 BS 6043-2.6, BS 6043-4.6 and BS 6
22、043-4.7 BS 1902-5.3 BS 6043-4.6 and BS 6043-4.7 BS 1902-5.8 BS 6043-4.6 and BS 6043-4.7 BS 6043-4.6 and BS 6043-4.7 a In preparation.BS6043-4.0:1991 2 BSI 10-1999 1)MRAD is the maximum rammed apparent density. Figure 1 Flow chart for tests on baked rammed paste in accordance with BS6043-4BS6043-4.0:
23、1991 BSI 10-1999 Publication(s) referred to BS 1902, Methods of testing refractory materials. BS 1902-5, Refractory and thermal properties. BS 1902-5.3, Determination of thermal expansion (horizontal method to 1100 C) (method 1902-503). BS 1902-5.8, Determination of thermal conductivity (split-colum
24、n method) 1) . BS 6043, Methods of sampling and test for carbonaceous materials used in aluminium manufacture. BS 6043-2, Electrode coke. BS 6043-2.6, Determination of the density in xylene of calcined cokes. BS 6043-4, Cold ramming pastes. BS 6043-4.1, Methods of sampling. BS 6043-4.2, Determinatio
25、n of effective binder content and aggregate content by extraction with quinoline; determination of aggregate size distribution. BS 6043-4.3, Determination of aggregate size distribution after extraction by dichloromethane. BS 6043-4.4, Determination of volatile matter content of unbaked paste. BS 60
26、43-4.5, Determination of water content of unbaked paste. BS 6043-4.6, Determination of maximum rammed apparent density. BS 6043-4.7, Preparation of baked rammed test pieces and determination of baked apparent density, change in volume and loss in mass. BS 6043-4.8, Determination of electrical resist
27、ivity of baked rammed paste. BS 6043-4.9, Determination of the cold crushing strength of rammed paste. BS 6043-4.10, Determination of the apparent porosity of baked rammed paste. BS 6043-4.11, Determination of the coefficient of thermal expansion of baked rammed paste. BS 6043-4.12, Determination of
28、 the thermal conductivity of baked rammed paste 1) . BS 6043-4.13, Determination of the ash of baked rammed paste. 1) In preparation.BS 6043-4.0: 1991 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandar
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