Standard Test Methods for Analysis of Metal Bearing Ores and Related Materials for Carbon, Sulfur, and Acid-Base Characteristics

SIGNIFICANCE AND USE
These test methods are primarily intended to test materials for compliance with compositional specifications and for monitoring. The determination of carbon and sulfur and acid neutralization potential in ores and related materials is necessary to classify ores for metallurgical processing and to classify waste materials from the mining and processing of ores such as leach residues, waste rock, and tailings according to their potential to generate acid in the environment. This information is useful during mine development to assist in mining and mineral processing operations and for proper disposal of waste materials. These test methods are also used to speciate carbon and sulfur contents of metal-bearing ores and related materials so that acid-base accounting can be performed (that is, carbonate mineral acid neutralization potential (ANP) minus sulfide-sulfur mineral acid generation potential (AGP) = net calcium carbonate (NCC)). Additionally, the test method has utility to identify the amount of organic carbon contained in gold ores so that potential for preg robbing can be identified and rectified through established pretreatment methods prior to cyanidation. (Warning—Pyrolysis pretreatment at 550 °C has a potential to thermally decompose some carbonate minerals: (1) transition metal carbonates (for example, siderite, FeCO3, and rhodochrosite, MnCO3) decompose, yielding carbon dioxide, CO2, in the range of 220 °C to 520 °C; (2) calcite decomposes slightly between 300 °C and 500 °C, although most decomposition occurs above 550 °C; (3) dolomite decomposes at 800 °C to 900 °C (Hammack, 1994, p. 440). )
These test methods also may be used for the classification of rock to be used in construction, where the potential to generate acid under environmental conditions exists.
It is assumed that the users of these test methods will be trained analysts capable of performing common laboratory procedures skillfully and safely. It is expected that work will be performed in...
SCOPE
1.1 These test methods cover the determination of total carbon and sulfur and acid-base characteristics in metal bearing ores and related materials such as leach residues, tailings, and waste rock within the following ranges:
1.2 The quantitative ranges for the partial decomposition test methods are dependent on the mineralogy of the samples being tested. The user of these test methods is advised to conduct an interlaboratory study in accordance with Practice E1601 on the test methods selected for use at a particular mining site, in order to establish the quantitative ranges for these test methods on a site-specific basis.

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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: E1915 – 09
Standard Test Methods for
Analysis of Metal Bearing Ores and Related Materials for
1
Carbon, Sulfur, and Acid-Base Characteristics
This standard is issued under the fixed designation E1915; 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 responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
1.1 These test methods cover the determination of total
bility of regulatory limitations prior to use. Specific warning
carbonandsulfurandacid-basecharacteristicsinmetalbearing
statements are given in Section 6.
ores and related materials such as leach residues, tailings, and
waste rock within the following ranges:
2. Referenced Documents
Analyte Application Range, % Quantitative Range, %
2
2.1 ASTM Standards:
TotalCarbon 0to10 0.08to10
Total Sulfur 0 to 8.8 0.023 to 8.8
D1067 Test Methods for Acidity or Alkalinity of Water
D1193 Specification for Reagent Water
NOTE 1—The test methods were tested over the following ranges:
D1976 Test Method for Elements in Water by Inductively-
Total Carbon 0.01 % to 5.87 %
Total Sulfur 0.0002 % to 4.70 % Coupled Argon Plasma Atomic Emission Spectroscopy
Residual Carbon from Pyrolysis 0.002 % to 4.97 %
D5673 Test Method for Elements in Water by Inductively
Residual Sulfur from Pyrolysis 0.014 % to 1.54 %
Coupled Plasma—Mass Spectrometry
Pyrolysis Loss Sulfur 0 % to 4.42 %
Hydrochloric Acid Insoluble Carbon 0.025 % to 0.47 %
D5744 Test Method for Laboratory Weathering of Solid
Hydrochloric Acid Loss Carbon 0 % to 5.78 %
Materials Using a Humidity Cell
Hydrochloric Acid Insoluble Sulfur 0.012 % to 4.20 %
D6234 Test Method for Shake Extraction of Mining Waste
Acid Neutralization Potential Acidity Titration -1.0 % to 100 %
Nitric Acid Insoluble Sulfur 0.006 % to 0.924 %
by the Synthetic Precipitation Leaching Procedure
Nitric Acid Loss Sulfur -0.08 % to 4.19 %
E29 Practice for Using Significant Digits in Test Data to
Sodium Carbonate Insoluble Sulfur 0.007 % to 3.78 %
Determine Conformance with Specifications
1.2 The quantitative ranges for the partial decomposition
E50 Practices for Apparatus, Reagents, and Safety Consid-
test methods are dependent on the mineralogy of the samples
erations for Chemical Analysis of Metals, Ores, and
being tested. The user of these test methods is advised to
Related Materials
conduct an interlaboratory study in accordance with Practice
E135 Terminology Relating to Analytical Chemistry for
E1601 on the test methods selected for use at a particular
Metals, Ores, and Related Materials
mining site, in order to establish the quantitative ranges for
E882 Guide for Accountability and Quality Control in the
these test methods on a site-specific basis.
Chemical Analysis Laboratory
1.3 The test methods appear in the following order:
E1019 Test Methods for Determination of Carbon, Sulfur,
Sections
Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt
Carbon and Sulfur, Total 10.1-10.9
Alloys by Various Combustion and Fusion Techniques
Carbon and Sulfur, Residual from Pyrolysis 10.10-10.18
Carbon and Sulfur, Hydrochloric Acid Insoluble 10.19-10.27 E1601 Practice for Conducting an Interlaboratory Study to
Acid Neutralization Potential Acidity Titration 10.28-10.36
Evaluate the Performance of an Analytical Method
Sulfur, Nitric Acid Insoluble 10.37-10.45
E1950 Practice for Reporting Results from Methods of
Sulfur, Sodium Carbonate Insoluble 10.46-10.54
Chemical Analysis
1.4 The values stated in SI units are to be regarded as
E2242 Test Method for Column Percolation Extraction of
standard.
Mine Rock by the Meteoric Water Mobility Procedure
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3. Terminology
3.1 Definitions—For definitions of terms used in these test
1
These test methods are under the jurisdiction of ASTM Committee E01 on methods, refer to Terminology E135.
Analytical Chemistry for Metals, Ores, and Related Materials and are the direct
responsibility of Subcommittee E01.02 on Ores, Concentrates, and Related Metal-
2
lurgical Materials. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Dec. 1, 2009. Published January 2010. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1997. Last previous edition approved in 2007 as E1915 – 07a. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/E1915-09. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor
...

This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:E1915–07a Designation: E1915 – 09
Standard Test Methods for
Analysis of Metal Bearing Ores and Related Materials by
Combustion Infrared-Absorption SpectrometryAnalysis of
Metal Bearing Ores and Related Materials for Carbon,
1
Sulfur, and Acid-Base Characteristics
This standard is issued under the fixed designation E1915; 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
1.1This1.1 Thesetestmethodscoversthedeterminationoftotalcarbonandsulfurandacid-basecharacteristicsinmetalbearing
ores and related materials such as leach residues, tailings, and waste rock within the following ranges:
Analyte Application Range, % Quantitative Range, %
TotalCarbon 0to10 0.08to10
Total Sulfur 0 to 8.8 0.023 to 8.8
NOTE 1—The test methods were tested over the following ranges:
Total Carbon - 0.01 to 5.87 %
Total Carbon 0.01 % to 5.87 %
Total Sulfur - 0.0002 0.0002 % to 4.70 %
Total Sulfur 0.0002 % to 4.70 %
Residual Carbon from Pyrolysis - 0.002 0.002 % to 4.97 %
Residual Carbon from Pyrolysis 0.002 % to 4.97 %
Residual Sulfur from Pyrolysis - 0.014 0.014 % to 1.54 %
Residual Sulfur from Pyrolysis 0.014 % to 1.54 %
Pyrolysis Loss Sulfur - 0 0 % to 4.42 %
Pyrolysis Loss Sulfur 0 % to 4.42 %
Hydrochloric Acid Insoluble Carbon - 0.025 0.025 % to 0.47 %
Hydrochloric Acid Insoluble Carbon 0.025 % to 0.47 %
Hydrochloric Acid Loss Carbon - 0 0 % to 5.78 %
Hydrochloric Acid Loss Carbon 0 % to 5.78 %
Hydrochloric Acid Insoluble Sulfur - 0.012 0.012 % to 4.20 %
Hydrochloric Acid Insoluble Sulfur 0.012 % to 4.20 %
Acid Neutralization Potential Acidity Titration -1.0 % to 4.20 %
100 %
Acid Neutralization Potential Acidity Titration -1.0 % to 100 %
Nitric Acid Insoluble Sulfur - 0.006 0.006 % to 0.924 %
Nitric Acid Insoluble Sulfur 0.006 % to 0.924 %
Nitric Acid Loss Sulfur - -0.08 -0.08 % to 4.19 %
Nitric Acid Loss Sulfur -0.08 % to 4.19 %
Sodium Carbonate Insoluble Sulfur - 0.007 0.007 % to 3.78 %
Sodium Carbonate Insoluble Sulfur 0.007 % to 3.78 %
1.2 The quantitative ranges for the partial decomposition test methods are dependent on the mineralogy of the samples being
tested. The user of these test methods is advised to conduct an interlaboratory study in accordance with Practice E1601on the test
methods selected for use at a particular mining site, in order to establish the quantitative ranges for these test methods on a
site-specific basis.
1.3 The test methods appear in the following order:
Sections
Carbon and Sulfur, Total12.1-12.6 10.1-10.9
Carbon and Sulfur, Total 10.1-10.9
Carbon and Sulfur, Residual from Pyrolysis12.7-12.12 10.10-10.18
Carbon and Sulfur, Residual from Pyrolysis 10.10-10.18
Carbon and Sulfur, Hydrochloric Acid Insoluble12.13-12.18 10.19-10.27
Carbon and Sulfur, Hydrochloric Acid Insoluble 10.19-10.27
1
These test methods are under the jurisdiction ofASTM Committee E01 onAnalytical Chemistry for Metals, Ores, and Related Materials and are the direct responsibility
of Subcommittee E01.02 on Ores, Concentrates, and Related Metallurgical Materials.
Current edition approved Nov.Dec. 1, 2007.2009. Published November 2007.January 2010. Originally approved in 1997. Last previous edition approved in 2007 as
E1915 – 07a. DOI: 10.1520/E1915-07A.10.1520/E1915-09.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
E1915 – 09
Acid Neutralization Potential Acidity Titration 10.28-10.36
Sulfur, Nitric Acid Insoluble12.19-12.24 10.37-10.45
Sulfur, Nitric Acid Insoluble 10.37-10.45
Sulfur, Sodium Carbonate Insoluble12.25-12.30 10.46-10.54
Sulfur, Sodium Carbonate Insoluble 10.46-10.54
1.4 The values stated in SI units are to be regarded as standard.
1.5 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. Specific warning statements are given in Section 76.
2. Referenced Documents
2
2.1 ASTM Standards:
D1067 Test Methods for Acidity or Alkalinity of Water
D1193 Specification for Reagent Water
D1976 Test Method for Elements in Water by Inductively-Coupled Argon Plasma Atomic Emission Spe
...

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