ASTM D167-93(2004)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact ASTM
International (www.astm.org) for the latest information.
Designation: D 167 – 93 (Reapproved 2004)
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.
1. Scope 4.1.1 An Elliptical or Rectangular Cross-Sectioned Con-
tainer, approximately 560 mm (22 in.) in length, 280 mm (11
1.1 This test method covers the determination of apparent
in.) in width, and a minimum of 330 mm (13 in.) in height,
specific gravity (Sections 2 to 9) and true specific gravity
provided with a spout consisting of a short 13-mm ( ⁄2-in.)
(Sections 10 to 13) of lump coke larger than 25-mm (1-in.) size
nippleextendinghorizontallyfromthecontainerabout270mm
and calculating porosity (Section 14) from the specific gravity
(10 ⁄2 in.) above the bottom.
data.
4.1.2 Wire Cage or Basket, of about 13-mm ( ⁄2-in.) square-
1.2 The values given in SI units shall be regarded as the
mesh screen wire cloth provided with a cover and two long
standard. Inch-pound units shall be accepted on an equivalent
handles, suitable for holding the entire sample of coke and so
basis.
made as to fit inside the container below the spout.
1.3 This standard does not purport to address all of the
4.1.3 Bucket or Other Vessel, 11-L (3-gal), suitable for
safety concerns, if any, associated with its use. It is the
receiving the displaced water.
responsibility of the user of this standard to establish appro-
4.1.4 Pan, about 380 mm (15 in.) square and 76 mm (3 in.)
priate safety and health practices and determine the applica-
in height or the equivalent for containing the coke during the
bility of regulatory limitations prior to use.
determination of its weight.
2. Referenced Documents 4.1.5 Balance, sensitive to 0.05 kg (0.1 lb).
2.1 ASTM Standards:
5. Sampling at Source
D 346 Practice for Collection and Preparation of Coke
5.1 When the porosity test is desired on run-of-oven coke,
Samples for Laboratory Analysis
the sample shall be collected from the coke wharf.
3. Significance and Use
5.1.1 By-Product Coke—About 23 kg (50 lb) of represen-
tative pieces of coke shall be selected from the coke wharf for
3.1 Apparent and true specific gravity, as determined by this
eachtest.Thisisbestaccomplishedbydividingthecokeonthe
test method, are influenced by the type of coals carbonized and
wharf into approximately equal areas and selecting an equal
the operating and preparational conditions of that carboniza-
number of pieces from each area. Each piece of coke selected
tion,thatis,chargebulkdensity,heatingrate,andpulverization
shall be approximately equal in length to one half of the width
level. In turn, these properties directly influence the perfor-
ofthecokeovens,andshallshowa“cauliflower”endproduced
mance in processes using coke.
at the walls of the ovens, and an “inner” end produced at the
APPARENT SPECIFIC GRAVITY
center of the ovens.
4. Apparatus
6. Sampling at Delivery
4.1 The apparatus for the determination of the apparent
6.1 If the porosity test is desired on coke for furnace or
specific gravity of coke shall consist of the following:
cupola use, the sample shall be representative of the material in
question and collected at the place of delivery.
6.1.1 By-Product—The sample is best collected as the coke
This test method is under the jurisdiction of ASTM Committee D05 on Coal
is delivered from the railroad cars into the bins. This can be
and Coke and is the direct responsibility of Subcommittee D05.15 on Metallurgical
accomplished by securing a representative sample of 4.5 to 6.8
Properties of Coal and Coke.
kg (10 to 15 lb) capacity in the coke stream at regular intervals
Current edition approved April 1, 2004. Published April 2004. Originally
e1
approved in 1923. Last previous edition approved in 1999 as D 167 – 93 (1999) .
during the period of unloading. The sample collected shall be
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
large enough to give about 23 kg (50 lb) of coke pieces, none
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
of which would in any position pass through a 25-mm (1-in.)
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. square-mesh sieve.
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact ASTM
International (www.astm.org) for the latest information.
D 167 – 93 (2004)
NOTE 1—Since the cage or basket is of 13-mm ( ⁄2-in.) square-mesh
coke from the water, and permit it to drain for 1 min. Remove
screenwirecloth,itisnecessarytohavepiecesthatwillremaininthecage
the wet coke from the cage and weigh it.
when it is removed from the water.
8.4 Determine the mass of the displaced water, which has
6.1.2 Since it is very difficult to collect a representative
been caught in the bucket.
sample from coke exposed in bins and cars, care shall be taken
9. Calculation
to take pieces representing the entire exposed area, if sampling
9.1 Calculate the apparent specific gravity as follows:
must be done in this manner. It is best accomplished by
dividing the exposed surface to be sampled into approximately
Apparent specific gravity 5 A/[B 1 ~C 2 A!# (1)
equal areas, and selecting an equal number of pieces from each
where:
area. A 23-kg (50-lb) sample of representative pieces shall be
A = mass of dry coke,
collected, none of which shall in any position pass through a
B = mass of water displaced by wet coke, and
25-mm (1-in.) square-mesh sieve.
C = mass of wet coke.
7. Calibration
TRUE SPECIFIC GRAVITY
7.1 Calibrate the Hogarth specific gravity bottle to deter-
mine the mass of the bottle and the distilled water required to 10. Apparatus
fill it (variable P). This can be done by (1) constructing a table
10.1 The apparatus for the determination of the true specific
graph of actual mass measurements of the bottle filled with
gravity of coke passing a 75-µm (No. 200) sieve shall consist
distilled water at various temperatures or (2) using the data in
ofaHogarth’sspecificgravitybottlewithsidetubulure,having
the tables of corrections for determining the true capacities of
a capacity of about 100 mL.
glass vessels from the mass of water in air (Lange or CRC
11. Sample Preparation
Handbooks ).
11.1 Select about 4.5 kg (10 lb) of coke from the sample
8. Procedure
(see Section 5) so that it is representative of the ma
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