1、BRITISH STANDARD BS 1016-108.1: 1996 ISO616:1995 Methods for Analysis and testing of coal and coke Part108: Test special to coke Section108.1 Determination of shatter indicesBS1016-108.1:1996 This British Standard, having been prepared under the direction of the Sector Board for Materials and Chemic
2、als, was published under the authority of the Standards Boardand comes into effect on 15 May1996 BSI 08-1999 First published January 1992 Second edition May 1996 The following BSI references relate to the work on this standard: Committee reference SFI/3 Draft for comment94/501398DC ISBN 0 580 25507
3、7 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee SFI/3, Analysis and testing coal and coke, upon which the following bodies were represented: British Cement Association British Coal Corporation British Gas plc British St
4、eel Industry Electricity Association GAMBICA (BEAMA Ltd.) Power Generation Contractors Association PGCA (BEAMA Ltd.) Amendments issued since publication Amd. No. Date CommentsBS1016-108.1:1996 BSI 08-1999 i Contents Page Committees responsible Inside front cover National foreword ii Introduction 1 1
5、 Scope 1 2 Normative references 1 3 Definition 1 4 Principle 1 5 Apparatus 1 6 Sampling and size analysis 3 7 Preparation of test portion 4 8 Procedure 4 9 Expression of results 4 10 Precision 4 11 Test report 5 Figure 1 Example of shatter test apparatus 2 List of references Inside back coverBS1016-
6、108.1:1996 ii BSI 08-1999 National foreword This British Standard has been prepared SFI/3 and is identical to ISO616:1995 Coke Determination of shatter indices, published by the International Organization for Standardization (ISO) and in the preparation of which the United Kingdom played a full part
7、. This British Standard is a revision of BS1016-108.1:1992 which is withdrawn. Main changes in this edition are in the sizes of test sieves used and the repeatability data. BS1016-108.1 is part of a rationalized and restructured BS1016. The Parts numbered from1 to21 are gradually being withdrawn and
8、 replaced by Parts in the new series. The full list of Parts in the series, together with corresponding numbering of the old series and related ISO standards is given in BS1016 Analysis and testing of coal and coke Part100:1994 General introduction and methods for reporting results. The Technical Co
9、mmittee has reviewed the provisions of ISO2309 and ISO 3310-2 to which normative reference is made in the text, and has decided that they are acceptable for use in conjunction with this standard. A British Standard related to ISO2309:1980 is BS1017 Sampling of coal and coke Part2:1994 Methods for sa
10、mpling of coke. ISO2309 is being revised in conjunction with ISO1988 Hard coal Sampling, ISO9411 Solid mineral fuels Mechanical sampling from moving streams Part1:Coal andPart2:Coke. This revision will be published in eight Parts, and it is intended to implement these Parts as identical British Stan
11、dards, superseding BS1017. A British Standard related to ISO3310-2:1990 is BS410:1986 Specification for test sieves. 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
12、British Standard does not of itself confer immunity from legal obligations. Cross-references International standard Corresponding British Standard ISO579:1981 BS1016 Methods for analysis and testing of coal and coke Part2:1973 Total moisture of coke (Technically equivalent) Part110 Size analysis of
13、coke ISO728:1995 Section110.1:1996 Nominal top size greater than20mm (Identical) Summary of pages This document comprises a front cover, an inside front cover, pagesi and ii, pages1 to6, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amend
14、ments incorporated. This will be indicated in the amendment table on the inside front cover.BS1016-108.1:1996 BSI 08-1999 1 Introduction The shatter index of coke can be determined for one test sieve or for each of a number of test sieves of different sizes of holes (e.g.80mm and40mm). The higher th
15、e shatter index, the greater the resistance of the coke to breakage into pieces which are smaller than the stated size. The mean size of the coke before and after the shatter test may also be determined to give additional information about the strength of the coke. 1 Scope This International Standar
16、d specifies a method for determining the strength of coke by the shatter test. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid.
17、 All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Stand
18、ards. ISO579:1981, Coke Determination of total moisture content. ISO728:1995, Coke (nominal top size greater than20mm) Size analysis by sieving. ISO2309:1980, Coke Sampling. ISO3310-2:1990, Test sieves Technical requirements and testing Part2: Test sieves of perforated metal plate. 3 Definition For
19、the purposes of this International Standard, the following definition applies. 3.1 shatter index percentage of a specially prepared sample of coke remaining on a test sieve of stated size of openings after the sample has been subjected to a specified dropping test 4 Principle A test portion taken fr
20、om the coke above a specified size is dropped under standard conditions. The mass of coke which is then retained on a test sieve, or on each of two or more test sieves of different sizes of holes, is determined. 5 Apparatus 5.1 Shatter test apparatus (see Figure 1), mounted on a solid base and consi
21、sting of the following parts. 5.1.1 Base unit, comprising a steel base plate with further plates fitted on all sides to prevent loss of coke during the test. The base plate shall be not less than12mm thick,1220mm long and970mm wide. Each of the other plates shall be not less than200mm high and10mm t
22、hick. The back plate (see note1) and the side plates shall be rigidly fixed and the front plate shall be removable (see note2), so as to facilitate shovelling the coke from the base unit into the box(5.1.4) after each drop. NOTE 1For the purposes of describing the apparatus, it is viewed from the “f
23、ront” when the counterweight appears to the right (as depicted in Figure 1). NOTE 2For convenience, the front plate may be hinged and fitted with latches. The rigidity of the base plate shall be ensured by one of the following means, of which the first is the simpler. a) The base plate is supported
24、solidly on a concrete raft, and the side and back plates and the vertical supports (5.1.2) are welded to it. b) The base plate is supported above a solid floor, on a lower framework of75mm 75mm 10mm angle-iron to which it is welded or riveted; the side and back plates are welded or riveted to this f
25、ramework and also to a vertical piece of angle-iron at each of the two back corners. 5.1.2 Main vertical supports, fastened to the outside of the side plates of the base unit. If the base plate is supported on a framework of angle-iron, the vertical supports shall be riveted or welded to the angle-i
26、ron to increase rigidity. The two vertical supports shall be constructed in one of the following ways. a) Each support consists of a T-section150mm wide with a60mm web. The web shall be removed where it is fastened to the side plate of the base unit. b) Each support consists of two75mm 75mm angles s
27、et13mm apart. 5.1.3 Top plate, 150mm to200mm wide and6mm thick, fastened to the main vertical supports, with a single-sheave pulley mounted at the left-hand end and a double-sheave pulley at the right-hand end. 5.1.4 Box, of internal dimensions710mm long,460mm wide and380mm deep.BS1016-108.1:1996 2
28、BSI 08-1999 Figure 1 Example of shatter test apparatusBS1016-108.1:1996 BSI 08-1999 3 The bottom of the box shall consist of two doors, hinged lengthwise and provided with a latch or other fastening capable of rapid opening. The doors shall be made of6mm steel plate and shall swing open rapidly, so
29、as not to impede the fall of the coke. The fastening shall be designed so that it can be released without causing the box to move (see, for example, the arrangement shown in Figure 1). The sides of the box shall be made of steel plate not less than3mm thick. 5.1.5 Box guides, approximately250mm long
30、, fitted to the end plates of the box, to engage with the main vertical supports. If the main vertical supports consist of T-sections, each box guide shall be double to run on either side of the web of the T-section. If the main vertical supports consist of75mm 75mm angles, each box guide shall cons
31、ist of6mm plate which can move in the channel between the two angles. 5.1.6 Wire ropes and counterweight, for supporting the box. A wire rope shall be fastened to each box guide (5.1.5) near the side support, so as to interfere as little as possible with the reloading of the box after each drop. The
32、 two wire ropes shall pass over the pulleys and a counterweight shall be suspended from the other ends of the ropes. The counterweight shall consist of a fixed weight, of mass equal to that of the box, and two12,5kg removable weights which are slotted onto a rod which passes through the centre of th
33、e fixed weight. 5.1.7 Box stops, to restrain the box, on either side, at the top and bottom of its run. The upper stops shall be located so that the highest position to which the box can be raised is where the inside of the bottom of the box is1830mm above the surface of the base plate. The lower st
34、ops shall be located to prevent the box from travelling below the position where the distance between the bottom of the box and the base plate is460mm. If the main vertical supports consist of75mm 75mm angles, the stops shall consist of plates filling the slot between the two angles. If the main ver
35、tical supports consist of T-sections, the lower stops shall consist of plates fixed to the web of the sections. The upper stops shall be provided by means of similar plates or, alternatively, the distance pieces fixing the width of the slots between the double guides shall be extended vertically to
36、form stops against the top plate. 5.2 Test sieves, of perforated plate, square hole, complying with ISO3310-2 and of nominal sizes of holes125mm,100mm,80mm,63mm,50mm, 40mm,25mm and12,5mm. The sieve plates shall be600mm square and shall be mounted in hardwood frames armoured with angle plates to redu
37、ce wear. When the wear on any hole exceeds2% of its nominal size, the hole shall be blanked off or the test sieve changed. NOTE 3For the larger sizes of foundry coke, single-hole gauges may be used instead of test sieves. 5.3 Weighing machine, with a capacity of not less than25kg, capable of weighin
38、g to the nearest10g. 6 Sampling and size analysis Take two gross samples for physical testing in accordance with ISO2309:1980, Coke Sampling 1)Prepare one of these samples for the determination of moisture content in accordance with ISO2309 and carry out the determination in accordance with ISO579.
39、If the moisture content is higher than5%(m/m), dry the other sample sufficiently toreduce the moisture content to lower than5% (m/m). Use this second sample for the remainder of the test. Carry out a size analysis in accordance with ISO728 on the sample using a set of test sieves (5.2) of successive
40、 nominal size of holes, the sieve with the largest size of holes being that on which not more than5%(m/m) of the sample remains. Place the coke by hand on the sieves of nominal size of holes down to and including40mm. For the smaller hole sizes, carry out sieving manually by holding the sieve in the
41、 hands, or suspending it freely, and shaking it horizontally to and fro with a displacement of about75mm. Complete fifty such oscillations (each consisting of one movement to and fro) in a period of about30s. If the amount of coke remaining on the sieve is then such that it covers more than75% of th
42、e sieve area, divide it into two or more portions and manually shake each portion separately. Weigh each size fraction, to the nearest10g, and place each fraction in a separate pile or container. Record the masses retained on the individual sieves as cumulative percentages. 1) In due course, ISO2309
43、 will be replaced by ISO13909-6, Hard coal and coke Sampling Part6: Coke Preparation of test samples.BS1016-108.1:1996 4 BSI 08-1999 7 Preparation of test portion Constitute a25kg 0,1kg test portion containing all fractions of coke greater than63mm in size, in approximately the same proportions as t
44、hey are present in the gross sample. Prepare the test portion by taking at random from each of the separate size fractions of coke (see clause6), down to and including the63mm to80mm fraction, an appropriate mass, weighed to the nearest10g using the weighing machine (5.3). NOTE 4The simplest way of
45、achieving this is to calculate the cumulative mass of coke required in each of these size fractions in the test portion, so as to correspond to the proportions in the gross sample. Then, starting with the fraction with the largest particle size, select pieces of coke and place them in a weighed cont
46、ainer until the required cumulative mass for each size fraction has been obtained. 8 Procedure 8.1 Determination Transfer the test portion (see clause7) carefully into the box(5.1.4) of the shatter test apparatus(5.1), by removing the coke from its container and placing it in the box by hand. Place
47、the two12,5kg weights on the counterweight(5.1.6) and raise the box to its highest position (see5.1.7). Close and fasten the front plate of the base unit (5.1.1). Release the bottom doors of the box to allow the coke to fall onto the base plate. WARNING To avoid the possibility of injury, it is impo
48、rtant that the operator should stand to one side before the doors of the box open. Close and secure the doors of the box. Remove the two12,5kg weights and lower the box to the lower stop (see5.1.7). Drop the front plate and carefully shovel the coke from the base plate into the box. Return all the c
49、oke to the box in this manner but without sweeping the base plate at this stage. Do not stand on the coke to perform this operation. WARNING To avoid the possibility of injury, it is important that the operator should stand to one side before the front plate falls. Repeat the process until a total of four drops have been made. NOTE 5Some form of indicator is helpful to avoid an error in the number of drops. If the mean size before and after the test is to be determined, assemble a set of test sieves (5.2) so that a full size analysis ca
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