ASTM D1508-02(2007)

Standard Test Method for Carbon Black, Pelleted Fines and Attrition

SIGNIFICANCE AND USE
Method A, Fines—The fines content of carbon black is related to the bulk flowability, dustiness, and, in some instances, the level of dispersion. Due to the many other variables that influence dispersion and handling, the significance of fines content must be determined by the user.
Method B, Attrition—By comparing the percent fines and attrition, an indication can be obtained of pellet stability and the amount of fines that may be created by pellet degradation in conveying, handling or transit.
SCOPE
1.1 This test method covers the determination of the fines and attrition of pelleted carbon black.
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: 30-Apr-2007
• ICS: 83.040.20 - Rubber compounding ingredients
• Technical Committee: D24 - Carbon Black
• Drafting Committee: D24.51 - Carbon Black Pellet Properties

Relations

• Replaces: ASTM D1508-02e2 - Standard Test Method for Carbon Black, Pelleted Fines and Attrition
• Effective Date: 01-May-2007
• Replaced By: ASTM D1508-02(2007)e1 - Standard Test Method for Carbon Black, Pelleted Fines and Attrition
• Effective Date: 01-May-2007
• Referred By: ASTM D3053-23 - Standard Terminology Relating to Carbon Black
• Effective Date: 01-May-2007
• Referred By: ASTM D5817-20 - Standard Practice for Carbon Black, Pelleted—Reduction, Blending, and Drying of Gross Samples for Testing
• Effective Date: 01-May-2007
• Referred By: ASTM D4122-17(2023) - Standard Practice for Carbon Black—Evaluation of an Industry Reference Black
• Effective Date: 01-May-2007
• Referred By: ASTM D1765-23a - Standard Classification System for Carbon Blacks Used in Rubber Products
• Effective Date: 01-May-2007
• Referred By: ASTM D8466-22 - Standard Guide for Recovered Carbon Black—Carbon Black Test Methods for Testing rCB
• Effective Date: 01-May-2007

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D1508–02 (Reapproved 2007)
Standard Test Method for
Carbon Black, Pelleted Fines and Attrition
This standard is issued under the fixed designation D1508; 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.
1. Scope 4. Significance and Use
1.1 This test method covers the determination of the fines 4.1 Method A, Fines—The fines content of carbon black is
and attrition of pelleted carbon black. related to the bulk flowability, dustiness, and, in some in-
1.2 This standard does not purport to address all of the stances, the level of dispersion. Due to the many other
safety concerns, if any, associated with its use. It is the variables that influence dispersion and handling, the signifi-
responsibility of the user of this standard to establish appro- cance of fines content must be determined by the user.
priate safety and health practices and determine the applica- 4.2 Method B, Attrition—By comparing the percent fines
bility of regulatory limitations prior to use. and attrition, an indication can be obtained of pellet stability
and the amount of fines that may be created by pellet
2. Referenced Documents
degradation in conveying, handling or transit.
2.1 ASTM Standards:
5. Apparatus
D1511 Test Method for Carbon Black—Pellet Size Distri-
bution 5.1 Mechanical or Vibratory Sieve Shaker.
D1799 Practice for Carbon Black—Sampling Packaged 5.2 Sieves, six 125-µm (U.S. Standard No. 120) having a
Shipments 200-mm (8-in.) diameter and 25-mm (1-in.) height, or equiva-
D1900 Practice for Carbon Black—Sampling Bulk Ship- lent, conforming to Specification E11.
ments 5.3 Sieve Separator Receivers, five required.
D4483 Practice for Evaluating Precision for Test Method 5.4 Sieve Cover.
Standards in the Rubber and Carbon Black Manufacturing 5.5 Bottom Receiver Pan.
Industries 5.6 Riffle Sample Splitter.
D5817 Practice for Carbon Black, Pelleted—Reduction, 5.7 Small Scoop or Large Spoon.
Blending, and Drying of Gross Samples for Testing 5.8 Balance, 0.1-g sensitivity.
E11 SpecificationforWovenWireTestSieveClothandTest
6. Sampling
Sieves
6.1 Samples shall be taken in accordance with Practice
3. Summary of Test Method
D1799 or Practice D1900.
3.1 Method A, Fines—A sample of carbon black is placed 6.2 Practice D5817 shall be used for reduction and blending
on a 125-µm sieve and shaken in a mechanical or vibratory of samples.
sieve shaker for 5 min. The pellets, pellet fragments, dust, and
7. Procedure
unpelletized black that pass through the sieve are defined as
carbon black fines. The fines are expressed in percent. 7.1 Method A, Fines and Method B, Attrition:
7.1.1 Stack up to six sets of sieves and receivers with a
3.2 MethodB,Attrition—Thesametestsampleisshakenfor
an additional 15 min to determine the amount of pellet receiver beneath each sieve.
7.1.2 Weigh 25.0 g portions, being careful to dip approxi-
degradation or attrition created during this additional shake
interval. The attrition is expressed in percent. mately 25 g of black from the riffle splitter.
NOTE 1—It is not good practice to weigh the sample by pouring it
directly out of the black container since the fines and smaller pellets will
This test method is under the jurisdiction ofASTM Committee D24 on Carbon
tend to remain in the container while the larger pellets pour out first.
Black and is the direct responsibility of Subcommittee D24.51 on Carbon Black
Dipping the black from the container is the preferred technique.
Pellet Properties.
CurrenteditionapprovedMay1,2007.PublishedJuly2007.Originallyapproved
7.1.3 Transfer each sample to an individual 125-µm sieve.
´2
in 1957. Last previous edition approved in 2002 as D1508 – 02 . DOI: 10.1520/
D1508-02R07.
NOTE 2—Six different materials or samples may be tested when all six
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on A Ro–Tap or vibratory sieve shaker is satisfactory for this purpose. For a
the ASTM website. description of these refer to Test Method D1511.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D1508–02 (2007)
sets of sieves are used. In some labs the position of the sieve may affect TABLE 1 Test Method Precision-Type 1: Five Minute Fines (%)
resultswiththehighersievesyieldinghigherfinesdata.Forthisreasonthe
Materials Mean Within Laboratories Between Laboratories
center position, sieves 3 and 4, should be used for referee testing.
Level %
Sr r (r) SR R (R)
7.1.4 Assemble up to six sets of sieves and receivers into a
stack. Place a cover on top and transfer to the shaker. Tighten Material C 1.5 0.31 0.9 60.2 0.51 1.5 98.9
Material A 2.2 0.53 1.5 69.2 0.68 1.9 88.4
the shaker to eliminate any looseness. Refer to the user manual
Material D 4.5 0.89 2.5 55.7 1.03 2.9 64.4
for operation of the vibratory sieve shaker. A vibratory ampli-
Material B 9.8 0.87 2.5 25.2 0.91 2.6 26.4
tude of 1.3 mm should be selected with the vibratory sieve
Pooled Values 4.5 0.70 2.0 43.8 0.81 2.3 51.1
shakers operating at 3600 vpm. However, products that contain
little or no binder may experience excessive attrition at the
specified amplitude of 1.3 mm. It is the responsibility of the
10. Precision and Bias
user to determine the appropriate amplitude for these products
in order to ma
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