ASTM D167-93(2004)e1

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D167 – 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 D167; 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 (´) indicates an editorial change since the last revision or reapproval.
´ NOTE—Section 13.1 was editorially corrected in January 2005.
1. Scope 3. Significance and Use
1.1 This test method covers the determination of apparent 3.1 Apparent and true specific gravity, as determined by this
specific gravity (Sections 2 to 9) and true specific gravity test method, are influenced by the type of coals carbonized and
(Sections 10 to 13) of lump coke larger than 25-mm (1-in.) size the operating and preparational conditions of that carboniza-
and calculating porosity (Section 14) from the specific gravity tion,thatis,chargebulkdensity,heatingrate,andpulverization
data. level. In turn, these properties directly influence the perfor-
1.2 The values given in SI units shall be regarded as the mance in processes using coke.
standard. Inch-pound units shall be accepted on an equivalent
APPARENT SPECIFIC GRAVITY
basis.
1.3 This standard does not purport to address all of the
4. Apparatus
safety concerns, if any, associated with its use. It is the
4.1 The apparatus for the determination of the apparent
responsibility of the user of this standard to establish appro-
specific gravity of coke shall consist of the following:
priate safety and health practices and determine the applica-
4.1.1 An Elliptical or Rectangular Cross-Sectioned Con-
bility of regulatory limitations prior to use.
tainer, approximately 560 mm (22 in.) in length, 280 mm (11
in.) in width, and a minimum of 330 mm (13 in.) in height,
2. Referenced Documents
provided with a spout consisting of a short 13-mm ( ⁄2-in.)
2.1 ASTM Standards:
nippleextendinghorizontallyfromthecontainerabout270mm
D346 Practice for Collection and Preparation of Coke
(10 ⁄2 in.) above the bottom.
Samples for Laboratory Analysis
4.1.2 Wire Cage or Basket, of about 13-mm ( ⁄2-in.) square-
mesh screen wire cloth provided with a cover and two long
This test method is under the jurisdiction of ASTM Committee D05 on Coal
handles, suitable for holding the entire sample of coke and so
and Coke and is the direct responsibility of Subcommittee D05.15 on Metallurgical
made as to fit inside the container below the spout.
Properties of Coal and Coke.
4.1.3 Bucket or Other Vessel, 11-L (3-gal), suitable for
Current edition approved April 1, 2004. Published April 2004. Originally
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receiving the displaced water.
approved in 1923. Last previous edition approved in 1999 as D167 – 93 (1999) .
DOI: 10.1520/D0167-93R04E01.
4.1.4 Pan, about 380 mm (15 in.) square and 76 mm (3 in.)
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
in height or the equivalent for containing the coke during the
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
determination of its weight.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 4.1.5 Balance, sensitive to 0.05 kg (0.1 lb).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D167 – 93 (2004)
5. Sampling at Source 8.2 Place a cork in the spout of the container, which has
been placed on a level and rigid base or floor. After the empty
5.1 When the porosity test is desired on run-of-oven coke,
cage has been placed into the container, pour water at room
the sample shall be collected from the coke wharf.
temperature into the container until the water level is above the
5.1.1 By-Product Coke—About 23 kg (50 lb) of represen-
spout. After the water has come to rest, remove the cork from
tative pieces of coke shall be selected from the coke wharf for
the spout and permit the excess water to drain out for 1 min
eachtest.Thisisbestaccomplishedbydividingthecokeonthe
aftertheoverflowstreamstartstodischargedropbydrop.Then
wharf into approximately equal areas and selecting an equal
replace the cork and remove the cage from the water, care
number of pieces from each area. Each piece of coke selected
being taken to shake all adhering water back into the container.
shall be approximately equal in length to one half of the width
Then place the weighed dried coke sample into the cage and
ofthecokeovens,andshallshowa“cauliflower”endproduced
after fastening the cover, lower the cage containing the coke
at the walls of the ovens, and an “inner” end produced at the
into the water.
center of the ovens.
NOTE 2—If there is not sufficient capacity in the container above the
6. Sampling at Delivery
spout to retain the displaced water, some of the water may be drawn off
6.1 If the porosity test is desired on coke for furnace or into a weighed bucket, or other suitable vessel, by removing the cork from
the spout while the coke is being lowered.
cupola use, the sample shall be representative of the material in
question and collected at the place of delivery.
8.3 Permit the cage to remain in the water for 15 min, with
6.1.1 By-Product—The sample is best collected as the coke
occasional shaking to detach any air bubbles adhering to the
is delivered from the railroad cars into the bins. This can be
surface of the coke, care being taken not to disturb the position
accomplished by securing a representative sample of 4.5 to 6.8
of the container.At the end of the 15-min period, during which
kg (10 to 15 lb) capacity in the coke stream at regular intervals
the coke shall have been completely submerged at all times,
during the period of unloading. The sample collected shall be
remove the cork after the water has come to rest and permit the
large enough to give about 23 kg (50 lb) of coke pieces, none
displaced water to drain into a weighed bucket or other suitable
of which would in any position pass through a 25-mm (1-in.)
vessel for 1 min after the overflow stream starts to discharge
square-mesh sieve.
drop by drop. Replace the cork, remove the cage containing the
coke from the water, and permit it to drain for 1 min. Remove
NOTE 1—Since the cage or basket is of 13-mm ( ⁄2-in.) square-mesh
the wet coke from the cage and weigh it.
screenwirecloth,itisnecessarytohavepiecesthatwillremaininthecage
8.4 Determine the mass of the displaced water, which has
when it is removed from the water.
been caught in the bucket.
6.1.2 Since it is very difficult to collect
...