1、INTERNATIONAL STANDARD IS0 567 Second edition 1995-07-01 SI Internade: Dm h% Coke - Determination of bulk density in a small container Coke - Dbtermination de la masse volumique en vrac dans un rhzipient de petites dimensions Reference number IS0 567:1995(E) IS0 567:1995(E) Foreword IS0 (the Interna
2、tional Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has be
3、en established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical stan
4、dardization. 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 casting a vote. International Standard IS0 567 was prepared by Technical Com
5、mittee lSO/TC 27, Solid mineral fuels, Subcommittee SC 3, Coke. This second edition cancels and replaces the first edition (IS0 567:1974), which has been technically revised. 0 IS0 1995 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any
6、form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case Postale 56 l CH-1211 Geneve 20 l Switzerland Printed in Switzerland ii 0 IS0 IS0 567:1995(E) Introduction The bu
7、lk density of coke depends upon its physical characteristics, e.g. apparent relative density, shape and size of the coke particles, and upon the dimensions of the container. The container specified in this Inter- national Standard has a capacity of 0,2 m3. The determination of bulk density of coke i
8、n a large container is described in IS0 1013. III INTERNATIONAL STANDARD 0 IS0 IS0 567:1995(E) Coke - Determination of bulk density in a small container 1 Scope This International Standard specifies a method for the determination of the bulk density of coke in a cubical container of capacity 0,2 m3.
9、 It is applicable to coke with a nominal top size not greater than 125 mm. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publi- cation, the editions indicated were valid. A
10、ll standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most re- cent editions of the standards indicated below. Members of IEC and IS0 maintain registers of cur- rently valid International Sta
11、ndards. IS0 579:1981, Coke - Determination of total moist- ure content. IS0 1013:1995, Coke - Determination of bulk den- sity in a large container. 3 Definition For the purposes of this International Standard, the following definition applies. 3.1 bulk density: The mass of a portion of a solid miner
12、al fuel divided by the volume of the container which is filled by that portion under specified con- ditions. 4 Principle A weighed container of known volume is filled with coke and the increase in mass is determined. 5 Apparatus 5.1 Cubical container, of capacity 0,200 m3 and internal dimension 585
13、mm, with a smooth inner sur- face, rigidly constructed and fitted with handles. 5.2 Weighing machine, preferably of the platform type, of maximum capacity 300 kg and sufficiently accurate that the weighing error does not exceed 0,l % of the maximum load or 250 g, whichever is the smaller. 6 Test sam
14、ple Take a sample (for physical testing) in accordance with IS0 2309:1980, Coke - Samplingll. 7 Procedure Place the container (5.1) on the weighing machine (5.2) and record its mass. Charge the coke slowly into the container until pieces of coke project above the top of the container across the whol
15、e surface. The height of drop of the coke shall not exceed 250 mm. Slide a straightedge across the top of the container and remove any pieces of coke which obstruct its passage. Weigh the charged container. Carry out a duplicate determination by repeating the procedure using a second portion of the
16、test sample. 1) In due course, IS0 2309 will be replaced by IS0 13909-6, Hard coal and coke - Sampling - Part 6: Coke - Preparation of test samples. 1 IS0 567:1995(E) 0 IS0 8 Expression of results The bulk density in a small container (pJ of the coke, in kilograms per cubic metre, on a dry basis, is
17、 given by the equation: p =q-mJ s V x 100-M 100 where is the mass, in kilograms, of the empty container; m, is the mass, in kilograms, of the container plus coke; V is the capacity, in cubic metres, of the container; M is the total moisture content of the coke, expressed as a percentage by mass, de-
18、 termined in accordance with IS0 579. Calculate the mean of the two determinations and report the result to three significant figures. For calculation of the result on an “as sampled” basis, omit the correction factor for moisture, i.e. “(I 00 - MI/l 00”, in the equation. 9 Precision 9.1 Repeatabili
19、ty limit same apparatus on representative portions taken from the same test sample, should not differ by more than 30 kg/m3. 9.2 Reproducibility No value for reproducibility can be quoted for deter- minations carried out in different laboratories because the transport of coke samples involves the ri
20、sk of breakage and thus alteration of the size distribution and the bulk density. 10 Test report The test report shall include the following: a) the method used by reference to this International Standard; b) a complete identification of the sample; c) the date of the test; d) the results expressed
21、in accordance with clause 8; e) any unusual features noted during the determi- nation; f) any operation not included in this international Standard, or regarded as optional. The results of duplicate determinations, carried out in the same laboratory by the same operator with the 2 IS0 567:1995(E) ICS 75.160.10 Descriptors: solid fuels, coke, tests, physical tests, determination, bulk density Price based on 2 pages
