ASTM D346-04(2010)
(Practice)Standard Practice for Collection and Preparation of Coke Samples for Laboratory Analysis
Standard Practice for Collection and Preparation of Coke Samples for Laboratory Analysis
SIGNIFICANCE AND USE
This practice may be used to provide a representative sample of the coke from which it is collected. Because of the variability of coke and the wide variety of sampling equipment, caution must be exercised in all stages of sampling, from system specifications and equipment procurement to equipment acceptance testing and actually taking the final sample.
This practice also provides an analysis sample of coke from the gross or divided sample. The analysis samples can be used to determine the value of the coke represented, its ability to meet specifications, as well as for other purposes.
SCOPE
1.1 This practice covers procedures for the collection and reduction of samples of coke to be used for physical tests, chemical analyses, and the determination of total moisture.
1.2 The values given in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This standard does not purport to address the safety concerns 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.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D346–04 (Reapproved 2010)
Standard Practice for
Collection and Preparation of Coke Samples for Laboratory
Analysis
This standard is issued under the fixed designation D346; 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.
INTRODUCTION
Coke, especially run of oven coke or foundry coke, or both, is a difficult material to sample. It is
imperative that every sample be collected and handled carefully and conscientiously and in strict
accordance with the standard procedure described herein.
Gross samples of not less than the quantities designated in this practice must be taken, whether the
coke to be sampled consists of a few tons or several hundred tons.
1. Scope D6883 Practice for Manual Sampling of Stationary Coal
from Railroad Cars, Barges, Trucks, or Stockpiles
1.1 This practice covers procedures for the collection and
reduction of samples of coke to be used for physical tests,
3. Significance and Use
chemical analyses, and the determination of total moisture.
3.1 This practice may be used to provide a representative
1.2 The values given in SI units are to be regarded as the
sample of the coke from which it is collected. Because of the
standard. The values given in parentheses are for information
variabilityofcokeandthewidevarietyofsamplingequipment,
only.
caution must be exercised in all stages of sampling, from
1.3 This standard does not purport to address the safety
system specifications and equipment procurement to equip-
concerns associated with its use. It is the responsibility of the
ment acceptance testing and actually taking the final sample.
user of this standard to establish appropriate safety and health
3.2 This practice also provides an analysis sample of coke
practices and determine the applicability of regulatory limita-
from the gross or divided sample. The analysis samples can be
tions prior to use.
used to determine the value of the coke represented, its ability
2. Referenced Documents to meet specifications, as well as for other purposes.
2.1 ASTM Standards:
4. Place of Sampling
D167 Test Method for Apparent and True Specific Gravity
4.1 Sample coke while it is being loaded into or unloaded
and Porosity of Lump Coke
from railroad cars, ships, barges, or trucks, or when discharged
D293 Test Method for the Sieve Analysis of Coke
from supply bins, grab buckets, belt conveyers, or other coke
D2013 Practice for Preparing Coal Samples for Analysis
conveying equipment. Sample close to the point of interest.
D2234/D2234M Practice for Collection of a Gross Sample
of Coal
5. Collection of Gross Sample
D3038 Test Method for Drop Shatter Test for Coke
5.1 Collect increments regularly, systematically, and with
D3302 Test Method for Total Moisture in Coal
such frequency, so that the entire quantity of coke sampled will
D3402 Test Method for Tumbler Test for Coke
be represented proportionately in the gross sample, and a gross
sample of the required amount will be collected. The standard
grosssampleshallequalorexceedthequantitiesgiveninTable
This practice is under the jurisdiction of ASTM Committee D05 on Coal and
1.
Coke and is the direct responsibility of Subcommittee D05.23 on Sampling.
5.1.1 The quantity of sample to be taken will depend on the
Current edition approved May 1, 2010. Published May 2010. Originally
e1
size of the coke being sampled and the amount of information
approved in 1932. Last previous edition approved in 2004 as D346 – 04 . DOI:
10.1520/D0346-04R10.
to be obtained from the sample.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.1.1.1 The size of the sieve analysis sample is governed by
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
the homogeneity of the coke being sampled. The quantities
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. given in Table 1 represent the minimum quantity to be
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D346–04 (2010)
TABLE 1 Minimum Gross Sample Weights of Coke, kg (lb)
Foundry Coke Furnace Coke
A
Usage Coke Breeze
Run of Oven Sized Run of Oven Sized
Sieve analysis (size consist) 364 (800) 227 (500) 227 (500) 182 (400) 45 (100)
Drop shatter test 182 (400) 159 (350) 136 (300) 91 (200) .
Tumbler test 68 (150) 45 (100) 57 (125) 57 (125) .
Apparent specific gravity 46 (100) 46 (100) 46 (100) 46 (100) 23 (50)
Coke moisture 46 (100) 46 (100) 46 (100) 46 (100) 23 (50)
Chemical analysis 113 (250) 113 (250) 57 (125) 57 (125) 34 (75)
A
Coke passing a ⁄4-in. (19-mm) square hole sieve or smaller top size.
collected.The sieve analysis sample will supply sufficient coke 6. Condition of Increment Collection
for any subsequent physical tests and laboratory analysis.Total
6.1 Four conditions of increment collection are recognized:
moisture of the coke should not be determined on the sieve
6.1.1 Condition A (Stopped-Belt Cut), in which a loaded
analysis sample.
conveyor belt is stopped and a full cross-section cut with
5.1.1.2 For the drop shatter test, a minimum of 75 kg (165
parallel sides is removed from the coke stream. The distance
lb) of coke retained on 50-mm (2-in.) square mesh sieve if
between the parallel faces shall not be less than three times the
furnace coke is being processed, or 140 kg (300 lb) of coke
length of the largest piece.
retained on 75-mm (3-in.) square mesh sieve if foundry coke is
6.1.2 Condition B (Full-Stream Cut), in which a full cross
being processed, is required. The quantities given in Table 1
section is removed from a moving stream of coke.
represent the minimum amounts required of sized coke.
6.1.3 Condition C (Part-Stream Cut), in which a portion,
5.1.1.3 The tumbler test requires a minimum of 35 kg (75
not a full cross section, is removed from a moving stream of
lb) of coke that will pass a 75-mm (3-in.) square mesh sieve
coke.
and can be retained on a 50-mm (2-in.) square mesh sieve, or
6.1.4 ConditionD(StationarySampling),inwhichaportion
that which will pass a 64-mm (2 ⁄2-in.) square mesh sieve and
of coke is collected from a pile, a railroad car, a barge, or a
can be retained on a 38-mm (1 ⁄2-in.) square mesh sieve. The
shiphold.
quantities given in Table 1 represent the minimum amount of
the required sized coke.
NOTE 2—See Section 6 of Practice D2234/D2234M.
5.1.1.4 The apparent specific gravity test required a mini-
mum of 23 kg (50 lb) of representative coke pieces. The
7. Size of Increments
quantities given in Table 1 represent the minimum amounts of
7.1 Tocollectincrements,useashovelorspeciallydesigned
the required coke pieces.
tool or mechanical means for taking equal increments. When
5.1.1.5 The determination of total moisture of the coke
increments are collected from the surface of a loaded rail car or
requires approximately 45 kg (100 lb) of coke. The quantities
truck shipment, the gross sample shall consist of nine incre-
given in Table 1 represent the minimum amount to be col-
ments of approximately equal quantity. When increments are
lected.
taken from piles, conveyor belts, barges, and so forth, the gross
5.1.1.6 The quantities given for samples for chemical analy-
sample shall consist of not less than 25, nor more than 50
sis represent the minimum amounts to be collected.
increments, of approximately equal quantity.
NOTE 1—Samplescollectedfromthesurfaceofcokeinpiles,bins,cars,
NOTE 3—When large-size coke, such as foundry coke, is being
ships, or barges are, in general, unreliable because of size segregation and
sampled, it is likely that quantities larger than those given in Table 1 will
should not be used for determining conformance to specifications unless
be collected. However, the minimum number of increments collected
the purchaser and the seller so agree. If necessary to collect a sample of
should not be decreased unless such is agreed upon between the purchaser
coke from the surface of a loaded railroad car, take nine equal increments
and the seller.
about 305 mm (1 ft) below the surface. Locate the nine points as shown
in Fig. 1. The diameter of the hole must be at least 3 times that of the NOTE 4—If the sample for chemical analysis is obtained from the sieve
largest piece in the shipment. analysis sample, a sample not smaller than that shown in Table 1 should
FIG. 1 Location of Sampling Points from Exposed Surface of Car
D346–04 (2010)
be reconstituted f
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.