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इंटरनेट मानक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. “जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ” Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru “The Right to Information, The Right to Live” “Step Out From the Old to the New” IS 1522 (1998): Fireclay Blocks for Glass Tank Furnace - [MTD 15: Refractories] “!ान $ एक न’ भारत का +नम-ण” Satyanarayan Gangaram Pitroda ““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee”” “!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै” Bhartṛhari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” IS1522:1998 Indian Standard FIRECLAY BLOCKS FOR GLASS TANK FURNACE — SPECIFICATION (Second Revision ) ICS 81.080 i @ BIS 1998 BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI 110002 December 1998 Price Group 1 : Refractories Sectioml Committee. MTD 15 FOREWORD This Indian Standard (Second Revision) wasadopted bythe Bureau ofIndian Standards after draft finalized by the Refractories Sectional Committee had been approved bythe Metallurgical Engineering Division Council. This standard was first published in 1960and subsequently revised in 1967. While reviewing the standard in the light ofexperience gained during these years, the Committee decided torevise ittobring it in line with the present practices being followed by the Indian industry. In this revision, the following changes have been made: a) One more grade of tireclay blocks for glass tank furnace has been incorporated, b) Physical tests for cold crushing strength, refractoriness under load and permanent linear change after reheating have also been incorporated. It istobe pointed out that though anumber oftests have been prescribed inthis standard, itis not intended that all of them should be carried out in each case, as by ajudicious application of some of the tests it shoutd be possible tojudge the quality of refractories in a lot. However, the tests to be conducted in each case would depend upon the service, conditions for which the refractories are intended, and purchasers are advised to indicate these conditions at the time of placing an indent or order. For the purpose ofdeciding whether aparticular requirement ofthis standard iscomplied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with 1S2:1960 ‘Rules for rounding off numerical values (revi,~ed)’. The ntinber of significant places retained in the rounded off value should be the same as that ofthe specified value in this standard. IS 1522:1998 Indian Standard FIRECLAY BLOCKS FOR GLASS TANK FURNACE — SPECIFICATION (Second Revision) 1 SCOPE Theyshall beburnt evenlythroughout, and shall have no soft corners and have sufficient mechanical This standard covers the requirements for fireclay strength. blocks for glass tank fhrnace. 4 SAMPLING 2 REFERENCES Representative samples may be drawn according to Thefollowing Indian Standards are necessmyadjuncts the scheme of sampling given in IS 1528 (Part 7) for tothis standard: carrying out these tests. The sample size and 1SNo. Title dimensions shall be mutually agreed between the 1335:1979 Method fordirect determination of manufacturer and the purchaser. alumina in refractory materials 5 TOLERANCE ON SIZE (#?rstrevision) 1387:1993 General requirements relating to Size tolerance for hard moulded shapes shall be the supply of metallurgical mate- subject to mutual agreement between purchaser and rials (second revision) manufacturer. 1527:1972 Methods for chemical analysis of The nominal size tolerance to which the blocks are high silica refractory materials manufactured are given below: (first revision) 1528 Methods ofsampling and physical Length and width + 1percent tests for refractory materials: Thickness l 0.66 mm (Part 1): 1980 Determination ofpyrometric cone NOTES equivalent (P CE) or softening 1 Forblocks, tolerance will be +0.5 mm and+ 1mm. point (second rev is ion) 2 All sides except the working face will be finish ground to (-Part2): 1974 Determination of refractoriness achieve therequiredsize tolerance subject tomutual agreement under load (/W revision) between purchaser aod manufacturer. (part 4): 1974 Determination of cold crushing 6 CHEMICAL COMPOSITION strength (fzrst revision) (Part 6): 1974 Determination ofpermanent linear The alumina and iron oxide contents of refractories, change after re-heating (/h@ when determined in accordance with the methods revision) specified in IS 1527 shall be as follows: (Rut 7): 1974 Method of sampling and criteria Alumina (AIZOJ,A4in 30 percent for conformity (first revision) Iron oxide (FezO,),A4ux 2.5 percent (Rut 8): 1974 Determination of apparent porosity (@t revision) NOTE — The alumina content may also bedetermined accord- ingtothe methods giveo in IS 1335. 3 SUPPLY OF MATERIAL 7 PHYSICAL CHARACTERISTICS 3.1 General requirements relating tothe supplyofthe When tested according to the methods given in fireclay blocks for glass tank furnaces shall be in relevant parts of IS 1528, refractories shall conform accordance with IS 1387. to the requirements given in Table 1. 3.2The refractories shallbecompact ofhomogeneous 7.1 The sample for testing shall be taken from the texture and free from cracks, voids and other flaws. same ghtss block. 1 / 1S1522:1998 Table 1 Physical Characteristics 8 MARKING (Clause 7) 8.1 Each fireclay glass tank block shall be legibiy and indelibly marked with the manufacturer’s name Characteristics Reqrdrement Method of A Test (Ref or trade-mark. r Grade 1 Grade 2to Part of IS 1528) 8.2 BIS Certification Marking (1) (2) (3) (4) Apparent porosity, percent, Max 22 20 Part8 The material may also be marked with the Standard Permanent linearchangeatler 0.50at 0,50 at Part6 Mark. reheating, percent, Max 1350f’C/2h1400”C/2h Cold crushingstrength, 200 200 Part4 8.2.1 The use of the Standard Mark is governed by kglcmz, A4in the provisions of Bureau of Indian Standards Act, Refractoriness underbad 1350 1400 PaIt2 1986 and theRulesandRegulations madethereunder. (RLJL).ta°C,&f/n The details ofconditions under which the licence for Pyrometric cone equivalent 30 31 Part1 the use of Standard Mark may be granted to (PCE) (ASTM) Cone manufacturers orproducers maybe obtained from the No.,Min Bureau ofIndian Standards. Bureau of Indian Standards BIS is a statutory institution established under the Bureau oflndian StundardsAct, 1986 to promote harmonious development of the activities of standardization, marking and quality certification of goods and attending to connected matters in the country. Copyright BIS has the copyright of all its publications. No part of these publications may be reproduced in any form without the prior permission in writing of BIS. This does not preclude the free use, in the course of implementing the standard, of necessary details, such as symbols and sizes, type or grade designations. Enquiries relating to copyright be addressed to the Director (Publications), BIS. Review of Indian Standards Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewed periodically; a standard along with amendments isreaflhmed when such review indicates that no changes are needed, if the review indicates that changes are needed, it istaken up for revision. Users of Indian Standards should ascertain that they are in possession ofthe latest amendments or edition by referring to the latest issue of ‘BIS Handbook’ and ‘Standards: Monthly Additions’. This Indian Standard has been developed from Doc :No. MT 15(4038). Amendments Issued Since Publication Amend No. Date of Issue Text Affected BUREAU OF INDIAN STANDARDS Headquarters : ,Manak Bhavan, 9Bahadur Shah Zafar Marg, NewDelhi 110002 Telegrams :Manaksanstha Telephones :3230131, 3233375, 3239402 (Common to all oflices) Regional OffIces : Telephone Central : Manak Bhavan, 9Bahadur Shah Zafar Marg 3237617 , NEW DELHI 110002 3233841 { Eastern : 1/14C. I. T. Scheme ~1 M, V. 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