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ASTM E2294-03(2008)e1

(Practice)

Standard Practice for Proof Silver Corrections in Metal Bearing Ores, Concentrates and Related Materials by Fire Assay Gravimetry

Standard Practice for Proof Silver Corrections in Metal Bearing Ores, Concentrates and Related Materials by Fire Assay Gravimetry

SIGNIFICANCE AND USE
This practice is primarily intended to be used for the correction of silver loss in the fire assay process. Silver assays are determined by fire assay for the purpose of metallurgical exchange between seller and buyer.
It is assumed that all who use this practice will be trained analysts capable of performing skillfully and safely. It is expected that work will be performed in a properly equipped laboratory under appropriate quality control practices such as those described in Guide E 882.
SCOPE
1.1 This practice covers the determination of fire assay correction for silver, utilizing proof silver, ores, concentrates, and related metallurgical materials.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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. (See Test Methods E 1335, Practices E 50, Guide E 882, and ISO Guide 35: 1989.)

General Information

Status
Historical
Publication Date
31-Oct-2008
ICS
73.060.01 - Metalliferous minerals in general
Technical Committee
E01 - Analytical Chemistry for Metals, Ores, and Related Materials
Drafting Committee
E01.02 - Ores, Concentrates, and Related Metallurgical Materials
Current Stage
Ref Project

Relations

Replaces
ASTM E2294-03 - Standard Practice for Proof Silver Corrections in Metal Bearing Ores, Concentrates and Related Materials by Fire Assay Gravimetry
Effective Date
01-Nov-2008

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ASTM E2294-03(2008)e1 - Standard Practice for Proof Silver Corrections in Metal Bearing Ores, Concentrates and Related Materials by Fire Assay GravimetryASTM E2294-03(2008)e1 - Standard Practice for Proof Silver Corrections in Metal Bearing Ores, Concentrates and Related Materials by Fire Assay Gravimetry
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ASTM E2294-03(2008)e1 - Standard Practice for Proof Silver Corrections in Metal Bearing Ores, Concentrates and Related Materials by Fire Assay Gravimetry
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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
´1
Designation: E2294 − 03 (Reapproved2008)
Standard Practice for
Proof Silver Corrections in Metal Bearing Ores,
Concentrates, and Related Materials by Fire Assay
Gravimetry
This standard is issued under the fixed designation E2294; 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.
´ NOTE—Editorial changes were made throughout in November 2008.
1. Scope 2.2 Other Documents:
ISO Guide 35: 1989 Certification of Reference Materials-
1.1 This practice covers the determination of fire assay
General and Statistical Principles
correction for silver, utilizing proof silver, ores, concentrates,
ISO 10378: 1994 Copper Sulfide Concentrates–Determina-
and related metallurgical materials.
tion of Gold and Silver Contents–Fire Assay Gravimetric
and Atomic Absorption Spectrometric Method
1.2 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
3. Terminology
standard.
3.1 Definitions—For definitions of terms used in this
1.3 This standard does not purport to address all of the
Practice, refer to Terminology E135.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4. Summary of Practice
priate safety and health practices and determine the applica-
4.1 In the process of fire assay, silver losses occur. Proof
bility of regulatory limitations prior to use. (See Test Methods
silver is carried through the assay fusion and cupellation
E1335, Practices E50, Guide E882, and ISO Guide 35: 1989.)
procedures to determine losses that can provide the fire assay
silver correction values (see Test Methods E1335,
2. Referenced Documents
4 5
ISO 10378: 1994, Bugbee, and Smith ).
2.1 ASTM Standards:
E29 Practice for Using Significant Digits in Test Data to 5. Significance and Use
Determine Conformance with Specifications
5.1 This practice is primarily intended to be used for the
E50 Practices for Apparatus, Reagents, and Safety Consid-
correction of silver loss in the fire assay process. Silver assays
erations for Chemical Analysis of Metals, Ores, and
are determined by fire assay for the purpose of metallurgical
Related Materials
exchange between seller and buyer.
E135 Terminology Relating to Analytical Chemistry for
5.2 It is assumed that all who use this practice will be
Metals, Ores, and Related Materials
trained analysts capable of performing skillfully and safely. It
E882 Guide for Accountability and Quality Control in the
is expected that work will be performed in a properly equipped
Chemical Analysis Laboratory
laboratory under appropriate quality control practices such as
E1335 Test Methods for Determination of Gold in Bullion
those described in Guide E882.
by Fire Assay Cupellation Analysis
6. Apparatus
6.1 Analytical balance—Capable of weighing to 0.001 mg.
This practice is under the jurisdiction of ASTM Committee E01 on Analytical
Chemistry for Metals, Ores, and Related Materials and is the direct responsibility of
Subcommittee E01.02 on Ores, Concentrates, and Related Metallurgical Materials.
Current edition approved Nov. 1, 2008. Published December 2008. Originally Available from International Organization for Standardization (ISO), 1, ch. de
approved in 2003. Last previous edition approved in 2003 as E2294 – 03. DOI: la Voie-Creuse, Case postale 56, CH-1211, Geneva 20, Switzerland, http://
10.1520/E2294-03R08E01. www.iso.ch.
2 4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Bugbee, E. E., A Textbook of Fire Assaying, Third Ed., John Wiley and Sons,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Inc., Hoboken, NJ, 1946.
Standards volume information, refer to the standard’s Document Summary page on Smith, E. A., The Sampling and Assay of the Precious Metals, Second Ed.,
the ASTM website. Charles Griffin and Co., Ltd., 1947.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
´1
E2294 − 03 (2008)
6.2 Assay furnace—Capable of temperatures up to 1100 °C, 9.2 Weigh two proof silver samples (99.99 % pure silver
accurate to 6 5 °C. fo
...

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Standard Practice for Fire Assay Silver Corrections in Analysis of Metal Bearing Ores, Concentrates, and Related Metallurgical Materials by Silver Determination in Slags and Cupels

SIGNIFICANCE AND USE
5.1 These methods are primarily intended to be used for the determination of silver correction in the fire assay silver determination. Silver assays are determined by fire assay for the purpose of metallurgical exchange between seller and buyer.  
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SIGNIFICANCE AND USE
5.1 These methods are primarily intended to be used for the determination of silver correction in the fire assay silver determination. Silver assays are determined by fire assay for the purpose of metallurgical exchange between seller and buyer.  
5.2 It is assumed that all who use this method will be trained analysts capable of performing skillfully and safely. It is expected that work will be performed in a properly equipped laboratory under appropriate quality control practices such as those described in Guide E882.
SCOPE
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Sections  
Gravimetric Method  
10–11  
Atomic Absorption Method  
12–13  
1.3 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. (See Practices E50 and ISO Guide 35:1989.)  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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SIGNIFICANCE AND USE
4.1 These practices are primarily intended to test materials for compliance with compositional specifications and for monitoring. Partial extraction of ores and related metallurgical materials can provide information on the availability of elements to leaching, water quality changes, or other site conditions.  
4.2 It is assumed that the users of these practices 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 shall be followed.
SCOPE
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7 to 14  
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15 to 21  
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SIGNIFICANCE AND USE
5.1 This practice is primarily intended to be used for the correction of silver loss in the fire assay process. Silver assays are determined by fire assay for the purpose of metallurgical exchange between seller and buyer.  
5.2 It is assumed that all who use this practice will be trained analysts capable of performing skillfully and safely. It is expected that work will be performed in a properly equipped laboratory under appropriate quality control practices such as those described in Guide E882.
SCOPE
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SIGNIFICANCE AND USE
5.1 This test method is intended as a means for obtaining an extract from mine rock samples. The extract may be used to estimate the final pH and release of certain constituents of the test sample under the laboratory conditions described in this test method.  
5.2 The pH of the extraction fluid used in this test method should reflect the pH of precipitation in the geographic region in which the mine rock is being evaluated.  
5.3 This test method is designed to mobilize potential contaminants present in the solids, so that the resulting extract can be used to assess leachate that could potentially be produced from mine rock in the field.  
5.4 This test method has not been demonstrated to simulate actual site leaching conditions.  
5.5 This test method produces extracts that are amenable to the determination of both major and minor (trace) constituents. When minor constituents are being determined, it is especially important that precautions be taken in sample preservation, storage, and handling to avoid possible contamination of the extracts.  
5.6 This test method is a comparative method intended for use as a routine method for monitoring mine rock. It is assumed that all who use this method will be trained analysts capable of performing skillfully and safely. It is expected that work will be performed in a properly equipped laboratory under appropriate quality control practices such as those described in Guide E882.
SCOPE
1.1 This test method provides a procedure for the column percolation extraction of mine rock in order to determine the potential for dissolution and mobility of certain constituents by meteoric water.  
1.2 This test method is intended to describe the procedure for performing column percolation extractions only. It does not describe all types of sampling and analytical requirements that may be associated with its application.  
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information only and are not considered standard.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    8 pages
    English language
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  • Standard
    8 pages
    English language
    sale 15% off