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YS/T 461.10-2013: Methods for chemical analysis of lead and zinc bulk concentrates. Part 10: The determination of gold and silver contents. Fire-assaying methods
Status: Valid YS/T 461.10: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| YS/T 461.10-2013 | English | 209 |
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Methods for chemical analysis of lead and zinc bulk concentrates. Part 10: The determination of gold and silver contents. Fire-assaying methods
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YS/T 461.10-2013
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| YS/T 461.10-2003 | English | 279 |
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The methods for chemical analysis of lead and zinc bulk concentrates-The determination of gold and silver content-The fire-assaying methods
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YS/T 461.10-2003
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Basic data | Standard ID | YS/T 461.10-2013 (YS/T461.10-2013) | | Description (Translated English) | Methods for chemical analysis of lead and zinc bulk concentrates. Part 10: The determination of gold and silver contents. Fire-assaying methods | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | H13 | | Classification of International Standard | 77.120.60 | | Word Count Estimation | 8,825 | | Older Standard (superseded by this standard) | YS/T 461.10-2003 | | Regulation (derived from) | Ministry of Industry and Information Technology Bulletin No. 52, 2013; industry standard for filing Notice No. 1 of 2014 (No. 169 overall) | | Issuing agency(ies) | Ministry of Industry and Information Technology | | Summary | This standard specifies the determination of the amount of gold in the mixed lead and zinc concentrates and silver content. This standard applies to the determination of the amount of gold in the mixed lead and zinc concentrates and silver content. Side s | YS/T 461.10-2013: Methods for chemical analysis of lead and zinc bulk concentrates. Part 10: The determination of gold and silver contents. Fire-assaying methods
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Methods for chemical analysis of lead and zinc bulk concentrates Part 10. The determination of gold and silver contents Fire-assaying methods
ICS 77.120.60
H13
People's Republic of China Nonferrous Metals Industry Standard
Replacing YS/T 461.10-2003
Lead and Zinc concentrates - Methods
Part 10. the amount of gold and silver contents
Fire assay
Part 10. Thedeterminationofgoldandsilvercontents-
Issued on. 2013-10-17
2014-03-01 implementation
Ministry of Industry and Information Technology of the People's Republic of China released
Foreword
YS/T 461 "Lead and Zinc concentrates - Methods" is divided into 11 parts.
--- Part 1. Determination of the amount of lead and zinc content Na2EDTA precipitation titration;
--- Part 2. Determination of iron content Na2EDTA titration;
--- Part 3. Determination of sulfur content of combustion - neutralization titration method;
--- Part 4. Determination of arsenic content of iodine titration;
--- Part 5. Determination of silicon dioxide content - Molybdenum blue spectrophotometric method;
--- Part 6. Determination of the amount of mercury atomic fluorescence spectrometry;
--- Part 7. Determination of cadmium content by flame atomic absorption spectrometry;
--- Part 8. Determination of copper content - Flame atomic absorption spectrometry;
--- Part 9. Determination of the amount of silver by flame atomic absorption spectrometry;
--- Part 10. the amount of gold and silver contents - fire assay;
--- Part 11. arsenic, bismuth, cadmium, cobalt, copper, nickel, antimony content - Inductively Coupled Plasma - Atomic Emission Spectrometry.
This section YS/T Part 10 461.
This section drafted in accordance with GB/T 1.1-2009 given rules.
The partial replacement of YS/T 461.10-2003 "Lead and Zinc concentrates - Methods for chemical analysis of gold - Determination of the amount of silver fire assay"
Compared with YS/T 461.10-2003, the main changes are as follows.
--- Text format has been modified;
--- Increase secondary assaying correction method;
--- Added "reproducibility" clause, delete the words "to allow poor" clause;
--- Added "the test report" requirement.
The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized.
YS/T 461 is responsible for drafting. Shenzhen Lingnan Nonferrous Metals Co., Baiyin Nonferrous Metals Group Co., Ltd.,
Beijing General Research Institute of Mining and Metallurgy.
This section is responsible for drafting. Shenzhen Lingnan Nonferrous Metals Co., Ltd. Shaoguan smelter.
Participated in the drafting of this section. Baiyin Nonferrous Metals Group Co., Ltd., Daye Nonferrous Metals Group Holdings Co., Ltd., Zhuzhou Smelter set
Group Co., Ltd., MCC Huludao Nonferrous Metals Group Co., Ltd., Hunan Nonferrous Metal Research Institute, Beijing General Research Institute of Mining and Metallurgy.
The main drafters of this section. Liu Renjie, Zhou Jianping, Weiwen Hui, Wang Yongbin, Yellow Spring, Bo Wen Chao, Guo Jun, pool Fenghua, Cao Yan, waffle,
Li Bing, Wang Haoying, Chen Chao Yan.
This part of the standard replaces the previous editions are.
--- YS/T 461.10-2003.
Lead and Zinc concentrates - Methods
Part 10. the amount of gold and silver contents
Fire assay
1 Scope
This section YS/T 461 specifies the method for determination of the amount of mixing zinc concentrates gold and silver content.
This section applies to the determination of the amount of mixing zinc concentrates gold and silver content. Measurement range. Silver. 500g/t ~ 3000g/t; gold. 0.5g/t ~
15.0g/t.
2 Method summary
After sample ingredients, high temperature melting, in order to capture the lead in a sample of the formation of lead and silver buckle, and other substances flux generated in a sample of molten eutectic
Slag. Made silver and gold by cupellation with lead separation to give a combined gold and silver grains. Gold is insoluble in nitric acid utilizing the nature of the gold, silver separation. By gravimetric method
Gold and silver content.
3 Reagents
Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity.
3.1 Sodium glass frit. Industrial pure, powder.
3.2 Borax. Industrial pure, powder.
Anhydrous sodium carbonate 3.3. Industrial pure, powder.
3.4 lead tetroxide. Industrial pure, powdered (wAu < 0.005g/t, wAg < 0.5g/t).
3.5 kno. Industrial pure, powder.
3.6 coating agent. 1 part borax (3.2) and 2 parts of anhydrous sodium carbonate (3.3) and mix.
3.7 Starch. Industrial pure, powder.
3.8 Silver (wAg≥99.99%).
3.9 gold (wAu≥99.99%).
3.10 Nitrate (ρ = 1.42g/mL).
3.11 Glacial acetic acid (ρ = 1.05g/mL).
Acetic acid 3.12 (13).
Nitric acid 3.13 (17), no chlorine ions.
4 instruments and equipment
4.1 Balances.
4.1.1 loading balance. minimum scale of 0.1g.
4.1.2 Analytical Balance. minimum scale of 0.001g.
4.1.3 microbalance. minimum scale of 0.01mg.
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