ASTM D167-93(1999)e1
(Test Method)Standard Test Method for Apparent and True Specific Gravity and Porosity of Lump Coke
Standard Test Method for Apparent and True Specific Gravity and Porosity of Lump Coke
SCOPE
1.1 This test method describes the determination of apparent specific gravity (Sections 2 to 8) and true specific gravity (Sections 9 to 13) of lump coke larger than 25-mm (1-in.) size and calculating porosity (Section 14) from the specific gravity data.
1.2 The values given in SI units shall be regarded as the standard. Inch-pound units shall be accepted on an equivalent basis.
1.3 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.>
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e1
Designation: D 167 – 93 (Reapproved 1999)
Standard Test Method for
Apparent and True Specific Gravity and Porosity of Lump
Coke
This standard is issued under the fixed designation D 167; 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. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
e NOTE—Sections 15, 16.1.1, and 16.1.2 were editorially changed in September 1999.
1. Scope the operating and preparational conditions of that carboniza-
tion, that is, charge bulk density, heating rate, and pulverization
1.1 This test method describes the determination of apparent
level. In turn, these properties directly influence the perfor-
specific gravity (Sections 2 to 9) and true specific gravity
mance in processes using coke.
(Sections 10 to 13) of lump coke larger than 25-mm (1-in.) size
and calculating porosity (Section 14) from the specific gravity
4. Apparatus
data.
4.1 The apparatus for the determination of the apparent
1.2 The values given in SI units shall be regarded as the
specific gravity of coke shall consist of the following:
standard. Inch-pound units shall be accepted on an equivalent
4.1.1 An Elliptical or Rectangular Cross-Sectioned Con-
basis.
tainer, approximately 560 mm (22 in.) in length, 280 mm (11
1.3 This standard does not purport to address all of the
in.) in width, and a minimum of 330 mm (13 in.) in height,
safety concerns, if any, associated with its use. It is the
provided with a spout consisting of a short 13-mm ( ⁄2-in.)
responsibility of the user of this standard to establish appro-
nipple extending horizontally from the container about 270 mm
priate safety and health practices and determine the applica-
(10 ⁄2 in.) above the bottom.
bility of regulatory limitations prior to use.
4.1.2 Wire Cage or Basket, of about 13-mm ( ⁄2-in.) square-
APPARENT SPECIFIC GRAVITY mesh screen wire cloth provided with a cover and two long
handles, suitable for holding the entire sample of coke and so
2. Referenced Documents
made as to fit inside the container below the spout.
2.1 ASTM Standards:
4.1.3 Bucket or Other Vessel, 11-L (3-gal), suitable for
D 121 Terminology of Coal and Coke receiving the displaced water.
D 346 Practice for Collection and Preparation of Coke
4.1.4 Pan, about 380 mm (15 in.) square and 76 mm (3 in.)
Samples for Laboratory Analysis in height or the equivalent for containing the coke during the
D 4621 Guide for Accountability and Quality Control in the
determination of its weight.
Coal Analysis Laboratory 4.1.5 Balance, sensitive to 0.05 kg (0.1 lb).
E 11 Specification for Wire-Cloth Sieves for Testing Pur-
5. Sampling at Source
poses
E 323 Specification for Perforated-Plate Sieves for Testing 5.1 When the porosity test is desired on run-of-oven coke,
Purposes the sample shall be collected from the coke wharf.
5.1.1 By-Product Coke—About 23 kg (50 lbs) of represen-
3. Significance and Use
tative pieces of coke shall be selected from the coke wharf for
3.1 Apparent and true specific gravity, as determined by this each test. This is best accomplished by dividing the coke on the
test method, are influenced by the type of coals carbonized and
wharf into approximately equal areas and selecting an equal
number of pieces from each area. Each piece of coke selected
shall be approximately equal in length to one half of the width
This test method is under the jurisdiction of ASTM Committee D-5 on Coal and
of the coke ovens, and shall show a “cauliflower” end produced
Coke and is the direct responsibility of Subcommittee D05.15 on Metalurgical
Properties of Coal and Coke. at the walls of the ovens, and an “inner” end produced at the
Current edition approved Jan. 15, 1993. Published April 1993. Originally
center of the ovens.
published as D 167 – 23 T. Last previous edition D 167 – 73 (1979).
Annual Book of ASTM Standards, Vol 05.06.
Annual Book of ASTM Standards, Vol 14.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D 167
6. Sampling at Delivery 8.3 Permit the cage to remain in the water for 15 min, with
occasional shaking to detach any air bubbles adhering to the
6.1 If the porosity test is desired on coke for furnace or
surface of the coke, care being taken not to disturb the position
cupola use, the sample shall be representative of the material in
of the container. At the end of the 15-min period, during which
question and collected at the place of delivery.
the coke shall have been completely submerged at all times,
6.1.1 By-Product—The sample is best collected as the coke
remove the cork after the water has come to rest and permit the
is delivered from the railroad cars into the bins. This can be
displaced water to drain into a weighed bucket or other suitable
accomplished by securing a representative sample of 4.5- to
vessel for 1 min after the overflow stream starts to discharge
6.8-kg (10- to 15-lbs) capacity in the coke stream at regular
drop by drop. Replace the cork, remove the cage containing the
intervals during the period of unloading. The sample collected
coke from the water and permit it to drain for 1 min. Remove
shall be large enough to give about 23 kg (50 lbs) of coke
the wet coke from the cage and weigh it.
pieces, none of which would in any position pass through a
8.4 Determine the mass of the displaced water, which has
25-mm (1-in.) square-mesh sieve.
been caught in the bucket.
NOTE 1—Since the cage or basket is of 13-mm ( ⁄2-in.) square-mesh
screen wire cloth, it is necessary to have pieces that will remain in the cage
9. Calculation
when it is removed from the water.
9.1 Calculate the apparent specific gravity as follows:
6.1.2 Since it is very difficult to collect a representative
Apparent specific gravity 5 A/@B 1 ~C 2 A!#
sample from coke exposed in bins and cars, care shall be taken
to take pieces representing the entire exposed area, if sampling
where:
must be done in this manner. It is best accomplished by
A = mass of dry coke,
dividing the exposed surface to be sampled into approximately
B = mass of water displaced by wet coke, and
equal areas, and selecting an equal number of pieces from each
C = mass of wet coke.
area. A 23-kg (50-lbs) sample of representative pieces shall be
collected, none of which shall in any position pass through a
TRUE SPECIFIC GRAVITY
25-mm (1-in.) square-mesh sieve.
10. Apparatus
7. Calibration
10.1 The apparatus for the determination of the true specific
7.1 Calibrate the Hogarth specific gravity bottle to deter
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