1、BRITISH STANDARD BS3056-4: 1985 ISO5019-4: 1984 Sizes of refractory bricks Part4: Specification for bricks for electric arc furnace roofs ISO title: Refractory bricks Dimensions Part4: Dome bricks for electric arc furnace roofs UDC 666.76431:66.042.87.043.1:621.365.2BS3056-4:1985 This British Standa
2、rd, having been prepared under the directionof the Refractory Products Standards Committee, was published under the authorityof the Board of BSI andcomes into effect on 29March1985 BSI08-1999 First published February1959 First revision August1973 First (Part) revision March1985 The following BSI ref
3、erences relate to the work on this standard: Committee reference RPM/4 Draft for comment82/77721 DC ISBN 0 580 14392 9 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Refractory Products Standards Committee (RPM/-) to Technical Committee
4、 RPM/4, upon which the following bodies were represented: British Ceramic Research Association British Gas Corporation British Metallurgical Plant Constructors Association British Steel Industry Cement Makers Federation Coke Oven Managers Association Glass Manufacturers Federation Institute of Refra
5、ctories Engineers Refractories Association of Great Britain Society of Glass Technology Society of Industrial Furnace Engineers Water-tube Boilermakers Association Amendments issued since publication Amd. No. Date of issue CommentsBS3056-4:1985 BSI 08-1999 i Contents Page Committees responsible Insi
6、de front cover National foreword ii 1 Scope and field of application 1 2 Dimensions 1 3 Brick designation 1 Annex A Commentary on the bricks selected for roof construction 3 Figure 1 Designation of brick dimensions in the Table 1 Figure 2 Relationship between roof diameter, roof rise and spherical r
7、adius 4 Table Dimensions of bricks for electric arc furnace roofs 2BS3056-4:1985 ii BSI 08-1999 National foreword This Part of BS3056 has been prepared under the direction of the Refractory Products Standards Committee. BS3056:1973 is being revised as a series of Parts so that it will cover bricks f
8、or a wide range of specific applications and will be withdrawn on publication of the complete series of revised standards. This Part is identical with ISO5019 “Refractory bricks Dimensions” Part4:1984 “Dome bricks for electric arc furnace roofs”, published by the International Organization for Stand
9、ardization (ISO). The series of brick sizes specified in this Part of BS3056 are annulus-shaped for use in roofs of ringed dome construction, the sizes being derived from a basic114mm 76mm cross section. The bricks are laid in the roof with their114mm dimension set radially and provision is made, by
10、 virtue of varying brick length, to accommodate three different roof thicknesses. Terminology and conventions. The text of the International Standard has been approved as suitable for publication as a British Standard without deviation. Some terminology and certain conventions are not identical with
11、 those used in British Standards; attention is drawn especially to the following. The comma has been used as a decimal marker. In British Standards it is current practice to use a full point on the baseline as decimal marker. Where the words “part of ISO5019” appear, referring to this standard, they
12、 should be read as “Part of BS3056”. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summ
13、ary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to4 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.BS3056-4:1985 BS
14、I 08-1999 1 1 Scope and field of application This part of ISO5019 specifies the dimensions of refractory bricks for use in the domes of electric arc furnace roofs. 2 Dimensions The dimensions of refractory bricks for use in the domes of electric arc furnace roofs shall be as shown in the Table. The
15、letter references used in the Table are illustrated in Figure 1. NOTEA commentary on the brick sizes specified is included in the Annex. 3 Brick designations The bricks of the different dimensions shall be designated by the reference numbers shown in the Table. In these reference numbers: a) the fir
16、st letter (H, J or K) indicates the brick length (roof thickness)(230mm;250mm or300mm); b) the second letter (W, X, Y or Z) indicates the spherical radius(2,7m;4,5m;6,3m or8,1m); c) the digit in the third place(1,2,3 or4) indicates the side arch taper(2mm;3mm;6mm or13mm). Figure 1 Designation of bri
17、ck dimensions inthe TableBS3056-4:1985 2 BSI 08-1999 Table Dimensions of bricks for electric arc furnace roofs Roof thickness Nominal spherical radius Brick dimensions mm Reference No. mm m A B C D E F 230 4,5 114 114 114 108,5 108,5 108,5 76 76 76 72,5 72,5 72,5 73 70 63 69,5 67 60 HX2 HX3 HX4 2,7
18、114 114 114 105 105 105 76 76 76 70 70 70 73 70 63 67 64,5 58 HW2 HW3 HW4 250 8,1 114 114 114 114 110,5 110,5 110,5 110,5 76 76 76 76 73,5 73,5 73,5 73,5 74 73 70 63 71,5 70,5 67,5 61 JZ1 JZ2 JZ3 JZ4 6,3 114 114 114 114 109,5 109,5 109,5 109,5 76 76 76 76 73 73 73 73 74 73 70 63 71 70 67 60,5 JY1 JY
19、2 JY3 JY4 300 8,1 114 114 114 114 110 110 110 110 76 76 76 76 73,5 73,5 73,5 73,5 74 73 70 63 71,5 70,5 67,5 61 KZ1 KZ2 KZ3 KZ4 6,3 114 114 114 114 109 109 109 109 76 76 76 76 72,5 72,5 72,5 72,5 74 73 70 63 70,5 69,5 67 60 KY1 KY2 KY3 KY4BS3056-4:1985 BSI 08-1999 3 Annex A Commentary on the bricks
20、selected for roof construction A.1 Ring construction is recommended, using bricks derived from a114mm 76mm cross-section, to be laid in the roof with each114mm dimension set radially, i.e.in a plane passing through the vertical axis of the dome. A.2 Three roof thicknesses are recommended (i.e.230mm,
21、250mm, and300mm). A.3 Bricks of four nominal spherical radii have been chosen (i.e.2,7m,4,5m,6,3m and8,1m) to cover roof diameters from1,5 to8m and roof rise ratios of from1:15 to1:8 as shown in Figure 2. There is no necessity to offer all four spherical radii for each roof thickness and six combina
22、tions of roof thickness and spherical radius have been selected, as shown in the Table. These combinations accommodate the higher roof rises now being used on most larger furnaces. Brick dimensions have been rounded off to 0,5mm and hence, for the various roof thicknesses, actual spherical radii may
23、 vary slightly from the nominal values quoted. A.4 For each of the six combinations, the Table includes the side arch tapers which are required in order to construct the individual brick rings in the roof. Clearly, rings could be constructed from two selected tapers but four are included to give inc
24、reased flexibility of selection and greater stability in the construction of large diameter roofs. A.5 An additional series of dimensions is being considered for adoption. BS 3056-4:1985 4 BSI 08-1999 Figure 2 Relationship between roof diameter, roof rise and spherical radiusblankBS3056-4: 1985 ISO5
25、019-4: 1984 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions BritishSt
26、andards are updated by amendment or revision. Users of BritishStandards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while usi
27、ng this BritishStandard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel:02089969000. Fax:02089967400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receiv
28、e the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel:02089969001. Fax:02089967001. In response to orders for international standards, it is BSI policy to supply the BSI implementation o
29、f those that have been published as BritishStandards, unless otherwise requested. Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information se
30、rvices are also available which give details on all its products and services. Contact the Information Centre. Tel:02089967111. Fax:02089967048. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For detail
31、s of these and other benefits contact Membership Administration. Tel:02089967002. Fax:02089967001. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright,
32、Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude the free use, in the course of implementing the standa
33、rd, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel:02089967070.
