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ASTM C737-02

(Specification)

Standard Specification for Limestone for Dusting of Coal Mines

Standard Specification for Limestone for Dusting of Coal Mines

ABSTRACT
This specification covers limestone suitable for use as dust in coal mines to prevent coal dust explosions. The limestone shall conform to the chemical composition requirements prescribed. The chemical analysis and the particle size analysis of the limestone shall be conducted.
SCOPE
1.1 This specification covers limestone suitable for use as dust in coal mines to prevent coal dust explosions.
Note 1—In coal mine operations, limestone is dusted onto coal exposures in sufficient amount so that not less than 65 % of all loose dust shall be limestone. With such a concentration of limestone, explosions cannot initiate or be propagated from nearby gas explosions. The limestone must be substantially dry in order to dust satisfactorily.
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-2002
ICS
73.080 - Non-metalliferous minerals
Technical Committee
C07 - Lime and Limestone
Drafting Committee
C07.02 - Specifications and Guidelines
Current Stage
Ref Project

Relations

Replaces
ASTM C737-97 - Standard Specification for Limestone for Dusting of Coal Mines
Effective Date
10-Dec-2002
Replaced By
ASTM C737-08 - Standard Specification for Limestone for Dusting of Coal Mines
Effective Date
01-Dec-2008

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ASTM C737-02 - Standard Specification for Limestone for Dusting of Coal Mines
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: C 737 – 02
Standard Specification for
1
Limestone for Dusting of Coal Mines
This standard is issued under the fixed designation C 737; 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
Silica, free and combined, max, % 4.0
1.1 This specification covers limestone suitable for use as
4. Physical Properties
dust in coal mines to prevent coal dust explosions.
4.1 Limestone for this application shall have the following
NOTE 1—In coal mine operations, limestone is dusted onto coal
particle size:
exposures in sufficient amount so that not less than 65 % of all loose dust
Passing a No. 20 (850-µm) sieve, min, % 100
shall be limestone. With such a concentration of limestone, explosions
Passing a No. 200 (75-µm) sieve, min, % 70
cannot initiate or be propagated from nearby gas explosions. The
limestone must be substantially dry in order to dust satisfactorily.
5. Test Methods
1.2 This standard does not purport to address all of the
5.1 Chemical Analysis—The chemical analysis of the lime-
safety concerns, if any, associated with its use. It is the stone shall be conducted in accordance with Test Methods
responsibility of the user of this standard to establish appro-
C25.
priate safety and health practices and determine the applica- 5.2 Particle Size—The sieve analysis of limestone shall be
bility of regulatory limitations prior to use.
conducted in accordance with Test MethodsC110.
2. Referenced Documents 6. General Requirements
2.1 ASTM Standards:
6.1 Either high calcium or dolomitic limestone may be
C25 Test Methods for Chemical Analysis of Limestone, furnished for this application.
2
Quicklime, and Hydrated Lime
7. Sampling, Inspection, etc.
C50 Methods for Sampling, Inspection, Packaging, and
2
Marking of Lime and Limestone Products 7.1 The sampling, inspection, rejection, retesting, packag-
C110 Test Methods for Physical Testing of Quicklime
...

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