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Standard Test Methods for Analysis of Metal Bearing Ores and Related Materials for Carbon, Sulfur, and Acid-Base Characteristics
Automaticky preložený názov:
Štandardné skúšobné metódy pre analýzu kovov, ktoré rúd a súvisiacich materiálov pre uhlík, síra, a acid-base Charakteristika
NORMA vydaná dňa 1.4.2013
Označenie normy: ASTM E1915-13
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.4.2013
Kód tovaru: NS-43556
Počet strán: 24
Približná hmotnosť: 72 g (0.16 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
acid neutralization potential, carbonate carbon content, carbon content, net calcium carbonate content, ores, organic carbon content, related materials, sulfate sulfur content, sulfide sulfur content, sulfur content, tailings, leach residue, waste rock, ICS Number Code 71.040.50 (Physicochemical methods of analysis)
Significance and Use | ||||||||||
4.1 These test methods are primarily intended to test materials for compliance with compositional specifications and for monitoring. 4.1.1 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. 4.1.1.1 The use of the acid neutralization potential titration low range method is most useful where acidity is present in the samples and when acid potential by titration is desired in the uncertain content range below 2 % CaCO4.1.2 These test methods are also used to isolate minerals based on 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)). 4.1.3 Additionally, the carbon hydrochloric acid insoluble 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: (4.2 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. 4.3 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 a properly equipped laboratory and that proper waste disposal procedures will be followed. Appropriate quality control practices such as those described in Guide E882 must be followed. |
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1. 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:
Total Carbon |
0.01 % to 5.87 % |
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Total Sulfur |
0.0002 % to 4.70 % |
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Residual Carbon from Pyrolysis |
0.002 % to 4.97 % |
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Residual Sulfur from Pyrolysis |
0.014 % to 1.54 % |
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Pyrolysis Loss Sulfur |
0 % to 4.42 % |
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Hydrochloric Acid Insoluble Carbon |
0.025 % to 0.47 % |
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Hydrochloric Acid Loss Carbon |
0 % to 5.78 % |
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Hydrochloric Acid Insoluble Sulfur |
0.012 % to 4.20 % |
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Acid Neutralization Potential Acidity Titration |
-1.0 % to 100 % |
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Acid Neutralization Potential Acidity Titration Low Range |
-1.0 % to 2 % CaCO3 |
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Nitric Acid Insoluble Sulfur |
0.006 % to 0.924 % |
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Nitric Acid Loss Sulfur |
-0.08 % to 4.19 % |
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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 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.
1.3 The test methods appear in the following order:
|
Sections |
Carbon and Sulfur, Total |
10.1-10.9 |
Carbon and Sulfur, Residual from Pyrolysis |
10.10-10.18 |
Carbon and Sulfur, Hydrochloric Acid Insoluble |
10.19-10.27 |
Acid Neutralization Potential Acidity Titration |
10.28-10.36 |
Acid Neutralization Potential Acidity Titration Low Range |
10.37-10.46 |
Sulfur, Nitric Acid Insoluble |
10.47-10.55 |
Sulfur, Sodium Carbonate Insoluble |
10.56-10.64 |
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.
Standard Test Method for Laboratory
Weathering of Solid Materials Using a Humidity Cell Standard Test Method for Elements in
Water by Inductively Coupled Plasma´Mass Spectrometry Standard Test Method for Elements in
Water by Inductively-Coupled Plasma Atomic Emission
Spectroscopy Standard Specification for Reagent
Water Standard Test Methods for Acidity or
Alkalinity of Water Standard Test Method for Column
Percolation Extraction of Mine Rock by the Meteoric Water Mobility
Procedure Standard Test Method for Shake Extraction
of Mining Waste by the Synthetic Precipitation Leaching
Procedure Standard Practice for Using Significant
Digits in Test Data to Determine Conformance with
Specifications Standard Guide for Accountability and
Quality Control in the Chemical Analysis Laboratory (Includes all
amendments and changes 10/27/2017). Standard Terminology Relating to
Analytical Chemistry for Metals, Ores, and Related Materials
(Includes all amendments and changes 7/17/2023). Standard Practices for Apparatus,
Reagents, and Safety Considerations for Chemical Analysis of
Metals, Ores, and Related Materials Standard Test Methods for Determination
of Carbon, Sulfur, Nitrogen, and Oxygen in Steel, Iron, Nickel, and
Cobalt Alloys by Various Combustion and Inert Gas Fusion
Techniques Standard Practice for Conducting an
Interlaboratory Study to Evaluate the Performance of an Analytical
Method Standard Practice for Reporting Results
from Methods of Chemical Analysis (Withdrawn 2023)
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