ASTM_D_292_-_29_1978_scan.pdf

AMERICAN NATIONAL ANSI/ASTM D 292-29(Reapproved 1978)STANDARD Standard Test Method for CUBIC FOOT WEIGHT OF COKE1 This Standard is issued under the fixed designation D 292;the number immediately following the designation indicates the year of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.I.Scope 1.l This method covers the determination of the cubic foot weight of coke 5 in.(!25 mm)and smaller,that is,coke which would in any position pass through a 5-in(125-mm)square-mesh sieve.NOTE I-The values stated in U.S.customary units are to be regarded as the standard.2.ApplicableDocuments 2.1 ASTM Standards:D 293 Sieve Analysis ofCoke2 D 346 Collection and Preparation of Coke Samples for Laboratory Analysis 2 D 3173 Test for Moisture in the Analysis Sample of Coal and Coke2 E 11 Specification for Wire-Cloth Sieves for Testing Purposes2 3.Apparatus 3.1 Measuring Box-A box 24 by 24 by 24 in.(610 by 610 by 610 mm)in inside dimen-sions shall be used.In order to keep it as light in weight as possible,the box may be made of wood,but it must be rigid.Two strips of wood may be fastened to the sides of the box to form sedan-chair handles for convenience in han-dling.NOTE 2-For determining the cubic foot weight of coke smaller than I in.(25.4 mm)in size,a measuring box 12 by 12 by 12 in.(305 by 305 by 305 mm)in inside dimensions may be used.3.2 Weighing Scale,platform type having a sensitivity of 0.25 lb(0.11 kg)or better at rated capacity and with graduations such that 0.5 lb(0.22 kg)can be read without interpolation 4.Sampling 4.1 The gross sample collected shall be a representation of all size fractions in the coke being sampled.The weight of the sample se-lected for the determination of the cubic foot weight depends upon the size and character of the coke and shall conform to the following:For run-of-oven coke and coke not less than 300 lb I in.up to 5 in.(25 to 125(136 kg)mm)in size For coke smaller than I in.in not less than 50 lb re m 4.2 It is extremely difficult to obtain truly representative samples of coke having a range of sizes.When the coke is on a belt conveyor the sample shall be selected by stopping the belt at regular intervals and selecting incre-ments in sections about 3 ft(910 mm)in length and the entire width of the belt,or when the coke is going over a pulley or coming down a chute the sample shall be selected by inserting a container or scoop into the stream of coke at regular intervals so as to take increments of the full width and thickness.The increments shall be regularly and systematically collected,so that the entire quantity of coke sampled will be represented proportionately in the sam-ple,and with such frequency that a sample of the required amount shall be collected.It is not feasible to collect representative samples of coke from loaded cars or bins for cubic foot weight determinations.Samples of coke in cars 1 This method is under the jurisdiction of ASTM Com-mittee D-5 on Coal and Coke.Current edition effective Sept.3,1929.Originally issued 1928.Replaces D 292-28 T.Annual Book of ASTM Standards,Part 26.NOTICE:This standard has either been superseded and replaced by a new version or discontinued.Contact ASTM International(www.astm.org)for the latest information.or bins should be taken as the cars or bins are being filled or emptied.S.Procedure 5.1 Place the measuring box on a siutable platform scale,weigh empty,and then fill with coke from the sample while the box is on the scale in order to avoid handling the heavy box of coke.Fill the box by means of a shovel or other suitable container by allowing the coke to slide out of the shovel or container from a height of 2 in.(50 mm)above the.top of the box,with no attempt to spread or ar-range the coke.Because of the physical char-D 292 acter of coke it is not practical to strike off the excess coke by means of a straight-edge,so it is necessary to do this largely by eye with the assistance of a straight-edge to check observations.Do not shake,tap,or drop the box during filling or leveling off.Weigh the box filled with coke.The difference between the two weights divided by the number of cubic feet in the box will give the weight per cubic foot of coke.NoTE 3-For proper interpretation of the cubic foot weight of coke,a moisture determination and a sieve analysis of the coke should be reported along with the cubic foot weight.For directions for making these determinations see Section 2.The American Society for Testing and Materials takes no position respecting the validity of aJ patent rights asserted in connection with any item mentioned in this standard.Users of this standard are expressly advise that determination of the validity of any such patent rights,and the risk of infringement of such rights,is entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years