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AS 3515.2:2019
$109.95
Gold and gold bearing alloys, Part 2: Determination of gold content (30 % to 99.5 %) — Gravimetric (fire assay) method
This Standard sets out gravimetric procedures for the determination of gold content in the range from 30 % to 99.5 % in gold and gold bearing alloys with < 2 % nickel, < 0.05 % rhodium, < 0.05 % tungsten, < 1 % platinum and < 3 % palladium.
Table of contents
Header
About this publication
Preface
1 Scope
2 Normative references
3 Definitions
4 Principle
5 Reagents
6 Apparatus
7 Sample preparation and preliminary determination
7.1 Sample inspection and preparation
7.2 Preliminary determination of the approximate total precious metals, gold, silver and total base metals content
7.2.1 General
7.2.2 Test portion preparation
7.2.3 Cupellation
7.2.4 Re-inquarting
7.2.5 Parting
7.2.6 Calculations
8 Procedure
8.1 Number of determinations
8.2 Proof tests
8.2.1 General
8.2.2 Preparation of test portion and proof
8.3 Cupellation
8.4 Parting
9 Calculation
9.1 Change in mass of proof
9.2 Determination of surcharge
9.2.1 General
9.2.2 Adjusted mass of the gold cornet
9.3 Gold content
10 Precision and acceptance of results
10.1 Precision
10.2 Acceptance of results
10.2.1 Reference standard
10.2.2 Test results
11 Test report
Appendix A
A.1 Scope
A.2 Criteria for selection of a method
A.3 Vacuum tube sampling
A.3.1 Principle
A.3.2 Procedure
A.4 Dip sampling
A.4.1 Principle
A.4.2 Sampling apparatus
A.4.3 Procedure
A.5 Sampling by clipping
A.6 Sampling by clipping
A.7 Sampling by sawing
A.8 Sampling by drilling
A.9 Granule sample
Bibliography
Cited references in this standard
Please select a variation to view its description.
| Published | 01/03/2019 |
|---|---|
| Pages | 15 |
Please select a variation to view its pdf.
