ASTM D1508-99

Standard Test Method for Carbon Black, Pelleted-Fines and Attrition

SCOPE
1.1 This test method covers the determination of the fines and attrition of pelleted carbon black.
1.2 This standard does not purport to address all of the safety concerns, 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.

General Information

• Status: Historical
• Publication Date: 09-Dec-2001
• ICS: 83.040.20 - Rubber compounding ingredients
• Technical Committee: D24 - Carbon Black
• Drafting Committee: D24.51 - Carbon Black Pellet Properties

Relations

• Replaced By: ASTM D1508-01 - Standard Test Method for Carbon Black, Pelleted-Fines and Attrition
• Effective Date: 10-Dec-2001
• Referred By: ASTM D3053-23 - Standard Terminology Relating to Carbon Black
• Effective Date: 10-Dec-2001
• Referred By: ASTM D4122-17(2023) - Standard Practice for Carbon Black—Evaluation of an Industry Reference Black
• Effective Date: 10-Dec-2001
• Referred By: ASTM D8466-22 - Standard Guide for Recovered Carbon Black—Carbon Black Test Methods for Testing rCB
• Effective Date: 10-Dec-2001
• Referred By: ASTM D5817-20 - Standard Practice for Carbon Black, Pelleted—Reduction, Blending, and Drying of Gross Samples for Testing
• Effective Date: 10-Dec-2001
• Referred By: ASTM D1765-23a - Standard Classification System for Carbon Blacks Used in Rubber Products
• Effective Date: 10-Dec-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.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.
Designation: D 1508 – 99
Test Method for
Carbon Black, Pelleted Fines and Attrition
This standard is issued under the fixed designation D 1508; 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 5. Apparatus
1.1 This test method covers the determination of the fines 5.1 Mechanical Sieve Shaker.
and attrition of pelleted carbon black. 5.2 Sieves, six 125-μm (U.S. Standard No. 120) having a
200-mm (8-in.) diameter and 25-mm (1-in.) height, or equiva-
2. Referenced Documents
lent, conforming to Specification E 11.
2.1 ASTM Standards:
5.3 Sieve Separator Receivers, five required.
D 1511 Test Method for Carbon Black—Pellet Size Distri- 5.4 Sieve Cover.
bution
5.5 Bottom Receiver Pan.
D 1799 Practice for Carbon Black—Sampling Packaged 5.6 Riffle Sample Splitter.
Shipments 5.7 Small Scoop or Large Spoon.
D 1900 Practice for Carbon Black—Sampling Bulk Ship-
5.8 Balance, 0.1-g sensitivity.
ments
6. Sampling
D 5817 Practice for Carbon Black, Pelleted-Reduction and
Blending of Gross Samples 6.1 Samples shall be taken in accordance with Practice
E 11 Specification for Wire-Cloth Sieves for Testing Pur- D 1799 or Test Method D 1900.
poses 6.2 Practice D 5817 shall be used for reduction and blend-
ing of samples.
3. Summary of Test Method
7. Procedure
3.1 Method A Fines - A sample of carbon black is placed on
a 125-μm sieve and shaken in a mechanical sieve shaker for 5 7.1 Method A - Fines and Method B - Attrition
minutes. The pellets, pellet fragments, dust and unpelletized 7.1.1 Stack up to six sets of sieves and receivers with a
black that pass through the sieve are defined as carbon black receiver beneath each sieve.
fines. The fines are expressed in percent. 7.1.2 Weigh 25.0 g portions, being careful to dip approxi-
3.2 Method B Attrition - The same test sample is shaken for mately 25 g of black from the riffle splitter.
an additional 15 minutes to determine the amount of pellet
NOTE 1—It is not good practice to weigh the sample by pouring it
degradation or attrition created during this additional shake
directly out of the black container since the fines and smaller pellets will
interval. The attrition is expressed in percent.
tend to remain in the container while the larger pellets pour out first.
Dipping the black from the container is the preferred technique.
4. Significance and Use
7.1.3 Transfer each sample to an individual 125-μm sieve.
4.1 Method A - Fines - The fines content of carbon black is
NOTE 2—Six different materials or samples may be tested when all six
related to the bulk flowability, dustiness, and, in some in-
sets of sieves are used. In some labs the position of the sieve may affect
stances, the level of dispersion. Due to the many other
results with the higher sieves yielding higher fines data. For this reason the
variables that influence dispersion and handling, the signifi-
center position, sieves 3 and 4, should be used for referee testing.
cance of fines content must be determined by the user.
7.1.4 Assemble up to six sets of sieves and receivers into a
4.2 Method B - Attrition - By comparing the percent fines
stack. Place a cover on top and transfer to the shaker. Tighten
and attrition, an indication can be obtained of pellet stability
the shaker to eliminate any looseness.
and the amount of fines that may be created by pellet
7.1.5 Start the shaker and allow to shake for 5 min with the
degradation in conveying, handling or transit.
hammer operating.
7.1.6 Remove the sieve assembly from the shaker and weigh
1 the carbon black retained in each receiver to the nearest 0.1 g.
This practice is under the jurisdiction of ASTM Committee D-24 on Carbon
Black and is the direct responsibility of Subcommittee D24.51 on Carbon Black
NOTE 3—To test only attrition, discard the fines without weighing.
Pellet Properties.
Current edition approved July 10, 1999. Published September 1999. Originally
published as D 1508–57 T. Last previous edition D 1508–98.
2 4
Annual Book of ASTM Standards, Vol 09.01. A Ro–Tap sieve shaker is satisfactory for this purpose. For a description of this
Annual Book of ASTM Standards, Vol 14.02. apparatus refer to Test Method D 1511.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
D 1508
7.2 Method A Fines: Acceptable difference values were not measured. The between
7.2.1 If testing only fines, empty and clean thoroughly all operator component of variation is included in the calculated
sieves in preparation for the next test. values for r and R.
10.4 The results of the precision calculations for this test are
NOTE 4—If attrition is to be tested, retain the pellets on the sieve and
given in Table 1 and Table 2 respectively. The materials are
discard the fines on the receiver. Proceed to Method B Attrition.
7.3 Me
...