ASTM D5114-90(2004)

Standard Test Method for Laboratory Froth Flotation of Coal in a Mechanical Cell

SIGNIFICANCE AND USE
This test method uses specific starting point conditions for the froth flotation response to accomplish the following:
4.1.1 Assess responses of one or more coals or blends of coal, and
4.1.2 Evaluate and determine froth flotation circuit performance.
SCOPE
1.1 This test method covers a laboratory procedure for conducting a single froth flotation test on fine coal (that is, nominal top size of 600 m (No. 30 U.S.A. Standard Sieve Series) or finer) using a defined set of starting point conditions for the operating variables.
1.2 This test method does not completely cover specific procedures for the investigation of flotation kinetics. Such a test is specialized and highly dependent upon the objective of the data.
1.3 Since optimum conditions for flotation are usually not found at the specified starting points, suggestions for development of grade/recovery curves are given in . Such a procedure is very case-specific and involves running a series of flotation tests in which some of the operating variables are changed in order to optimize conditions for either yield or grade.
1.4 Laboratory flotation results need not be representative of the flotation response of coal in full-scale situations, but a consistent baseline can be established against which full-scale performance can be compared.
1.5 The values stated in SI units are to be regarded as standard. The values in parentheses are provided for information only. The values stated in each system may not be exact equivalents; therefore, each system must be used independently of the other, without combining values in any way.
This standard does not purport to address 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.
1.6 Material Safety Data Sheets (MSDS) for reagents used are to be obtained from suppliers who are to be consulted before work with any chemicals used in this test method.

General Information

• Status: Historical
• Publication Date: 31-Mar-2004
• ICS: 73.040 - Coals
• Technical Committee: D05 - Coal and Coke
• Drafting Committee: D05.07 - Physical Characteristics of Coal

Relations

• Replaces: ASTM D5114-90(1998) - Standard Test Method for Laboratory Froth Flotation of Coal in a Mechanical Cell
• Effective Date: 01-Apr-2004
• Replaced By: ASTM D5114-90(2010) - Standard Test Method for Laboratory Froth Flotation of Coal in a Mechanical Cell
• Effective Date: 01-Sep-2010
• Referred By: ASTM D121-15 - Standard Terminology of Coal and Coke
• Effective Date: 01-Apr-2004

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:D5114–90(Reapproved 2004)
Standard Test Method for
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Laboratory Froth Flotation of Coal in a Mechanical Cell
This standard is issued under the fixed designation D5114; 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
Froth flotation of coal, the separation of ash-bearing minerals from combustibles via differences in
surface chemistry, has been steadily increasing in use as a means to treat 600-µm (No. 30 U.S.A.
Standard Sieve Series) or finer coal.The process is one in which many variables need to be monitored
and regulated. Because of this complexity, rigorous laboratory testing is difficult to standardize.
This test method outlines the types of equipment and procedures to apply on a laboratory scale to
isolate key process variables and minimize the variations associated with the design and execution of
a froth flotation test. The objective of the test method is to develop a means by which repeatable
grade/recovery results are ascertained from froth flotation testing of coal without imposing
unnecessary limitations on the applicability of the test results in coal preparation practice.
It is recognized that sample preparation, particularly comminution, has a significant impact on froth
flotation response. This test method does not attempt to define sample preparation and size reduction
practices as part of a froth flotation testing program.
Thistestmethodalsodoesnotcompletelycoverspecificproceduresfortheinvestigationofflotation
kinetics. Such a test is specialized and is highly dependent upon the end use of the data.
1. Scope consistent baseline can be established against which full-scale
performance can be compared.
1.1 This test method covers a laboratory procedure for
1.5 The values stated in SI units are to be regarded as
conducting a single froth flotation test on fine coal (that is,
standard. The values in parentheses are provided for informa-
nominal top size of 600 µm (No. 30 U.S.A. Standard Sieve
tion only. The values stated in each system may not be exact
Series) or finer) using a defined set of starting point conditions
equivalents; therefore, each system must be used indepen-
for the operating variables.
dently of the other, without combining values in any way.
1.2 This test method does not completely cover specific
1.6 This standard does not purport to address the safety
procedures for the investigation of flotation kinetics. Such a
concerns, if any, associated with its use. It is the responsibility
test is specialized and highly dependent upon the objective of
of the user of this standard to establish appropriate safety and
the data.
health practices and determine the applicability of regulatory
1.3 Since optimum conditions for flotation are usually not
limitations prior to use.
found at the specified starting points, suggestions for develop-
1.7 Material Safety Data Sheets (MSDS) for reagents used
ment of grade/recovery curves are given inAppendix X1. Such
are to be obtained from suppliers who are to be consulted
a procedure is very case-specific and involves running a series
before work with any chemicals used in this test method.
of flotation tests in which some of the operating variables are
changed in order to optimize conditions for either yield or
2. Referenced Documents
grade.
2
2.1 ASTM Standards:
1.4 Laboratoryflotationresultsneednotberepresentativeof
D121 Terminology of Coal and Coke
the flotation response of coal in full-scale situations, but a
D2013 Practice for Preparing Coal Samples for Analysis
1
This test method is under the jurisdiction of ASTM Committee D05 on Coal
and Coke and is the direct responsibility of Subcommittee D05.07 on Physical
2
Characteristics of Coal. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved April 1, 2004. Published May 2004. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1990. Last previous edition approved in 1998 as D5114 – 90 (1998).
Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/D5114-90R04.
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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