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GB/T 20899.8-2022: Methods for chemical analysis of gold ores - Part 8: Determination of sulfur content
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Methods for chemical analysis of gold ores - Part 8: Determination of sulfur content
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GB/T 20899.8-2022
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| GB/T 20899.8-2007 | English | 319 |
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Methods for chemical analysis of gold ores -- Part 8: Determination of sulfur contents
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GB/T 20899.8-2007
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Basic data | Standard ID | GB/T 20899.8-2022 (GB/T20899.8-2022) | | Description (Translated English) | Methods for chemical analysis of gold ores - Part 8: Determination of sulfur content | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D46 | | Classification of International Standard | 73.060.99 | | Word Count Estimation | 14,170 | | Date of Issue | 2022-12-30 | | Date of Implementation | 2023-07-01 | | Older Standard (superseded by this standard) | GB/T 20899.8-2007 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 20899.8-2022: Methods for chemical analysis of gold ores - Part 8: Determination of sulfur content
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ICS 73.060.99
CCSD46
National Standards of People's Republic of China
Replace GB/T 20899.8-2007
Gold ore chemical analysis method
Part 8.Determination of sulfur content
Posted on 2022-12-30
2023-07-01 implementation
State Administration for Market Regulation
Released by the National Standardization Management Committee
table of contents
Preface I
Introduction II
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Method 1 Barium sulfate gravimetric method 1
4.1 Principle 1
4.2 Reagent or material 1
4.3 Instruments and equipment 1
4.4 Sample 2
4.5 Test Step 2
4.6 Test data processing 2
4.7 Precision 3
4.8 Test report 3
5 Method 2 Combustion neutralization titration 4
5.1 Principle 4
5.2 Reagents or materials 4
5.3 Instruments and equipment 4
5.4 Sample 5
5.5 Test step 6
5.6 Test data processing 6
5.7 Precision 6
5.8 Test report 7
6 Method 3 Determination of available sulfur---combustion neutralization titration method 7
6.1 Principle 7
6.2 Reagents or materials 7
6.3 Instruments and equipment 8
6.4 Sample 8
6.5 Test step 8
6.6 Test data processing 9
6.7 Precision 9
6.8 Test report 10
foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules for Standardization Documents"
drafting.
This document is part 8 of GB/T 20899 "Methods for Chemical Analysis of Gold Ore". GB/T 20899 has issued the following 13
part.
--- Part 1.Determination of the amount of gold;
--- Part 2.Determination of silver content by flame atomic absorption spectrometry;
--- Part 3.Determination of the amount of arsenic;
--- Part 4.Determination of copper content;
--- Part 5.Determination of lead content;
--- Part 6.Determination of zinc content;
--- Part 7.Determination of iron content;
--- Part 8.Determination of sulfur content;
--- Part 9.Determination of carbon content;
--- Part 10.Determination of antimony content;
--- Part 12.Determination of the amount of arsenic, mercury, cadmium, lead and bismuth atomic fluorescence spectrometry;
--- Part 13.Determination of the amount of lead, zinc, bismuth, cadmium, chromium, arsenic and mercury by inductively coupled plasma atomic emission spectrometry;
--- Part 14.Determination of the amount of thallium Inductively coupled plasma atomic emission spectrometry and inductively coupled plasma mass spectrometry.
This document replaces GB/T 20899.8-2007 "Methods for Chemical Analysis of Gold Ore Part 8.Determination of Sulfur Content", and
Compared with GB/T 20899.8-2007, except for structural adjustment and editorial changes, the main technical changes are as follows.
a) Changed the measurement range (see Chapter 1, Chapter 1 of the.2007 edition);
b) Delete the requirement of "allowable difference" (see 2.6 and 3.7 of the.2007 edition);
c) The amount of mixed solvent used in method 1 has been changed (see 4.5.3, 2.4.3 of the.2007 edition);
d) The ignition temperature of method 1 has been changed (see 4.5.3, 2.4.3 of the.2007 edition);
e) Added the requirements of "repeatability" and "reproducibility" (see 4.7, 5.7, 6.7);
f) Changed the intake method of method 2 (see 5.5.3, 3.5.3 of the.2007 edition);
g) Added the determination of available sulfur (see Chapter 6).
Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents.
This document is proposed and managed by the National Gold Standardization Technical Committee (SAC/TC379).
This document is drafted by. Changchun Gold Research Institute Co., Ltd., Changchun National Inspection (Jiyuan) Testing Technology Co., Ltd., Shenzhen Gold Gold and Silver Co., Ltd.
Jewelry Inspection and Research Center Co., Ltd., Zijin Mining Group Co., Ltd., Beikuang Testing Technology Co., Ltd., Henan Zhongyuan Gold Smelting
Factory Co., Ltd., Shandong Gold Smelting Co., Ltd., Yunnan Gold Mining Group Precious Metal Testing Co., Ltd., Shandong Hengbang Smelting Co., Ltd.
Co., Ltd., Luoning Zijin Gold Smelting Co., Ltd.
The main drafters of this document. Chen Yonghong, Zhang Yue, Yang Xing, Lu Xingen, Meng Xianwei, Hong Bo, Zhong Yingnan, Mu Yan, Du Yuanyuan, Wang Deyu,
Zhuang Fengzhu, Long Xiujia, Xu Xiaoyan, Hao Jun, Liu Chengxiang, Sun Ke, Zhou Fajun, Yin Xiaobin, Chen Xiaoke, Lu Wenxian, Niu Yuling, Pan Meirong, Su Jing,
Liu Junwei.
This document was first published in.2007, and this is the first revision.
Introduction
GB/T 20899 "Chemical Analysis Methods of Gold Ore" aims to help gold industrial and mining enterprises to accurately understand the valuable elements and impurities in gold ore.
It is beneficial to optimize the control parameters of the dressing and smelting process, precisely control the consumption of reagents, reduce the interference of impurity elements on the smelting and purification process, and improve the efficiency of each
The comprehensive recovery rate of valence elements can contribute to the efficient recycling of resources in the entire gold industry, sustainable green and healthy development, and the construction of smart mines.
Provide technical support. GB/T 20899 is proposed to consist of 14 parts.
--- Part 1.Determination of the amount of gold. The purpose is to specify the fire test gold gravimetric method and fire test gold enrichment-flame method for the determination of gold in gold ore.
Atomic absorption spectrometry, activated carbon enrichment-flame atomic absorption spectrometry, activated carbon enrichment-iodometric method and applicable determination of each method
scope.
--- Part 2.Determination of the amount of silver flame atomic absorption spectrometry. The purpose is to specify the flame atom for the determination of the amount of silver in gold ore
Absorption Spectrometry and Applicable Measurement Range.
--- Part 3.Determination of the amount of arsenic. The purpose is to specify the silver diethyldithiocarbamate spectrophotometer for the determination of arsenic in gold ore
Degree method and potassium dichromate titration method and applicable measurement range of each method.
--- Part 4.Determination of the amount of copper. The purpose is to specify the method of flame atomic absorption spectrometry and thiosulfuric acid for the determination of the amount of copper in gold ore
Sodium titration method and applicable measurement range of each method.
--- Part 5.Determination of the amount of lead. The purpose is to specify the method of flame atomic absorption spectrometry and ethylenediamine tetramine for the determination of lead in gold ore
Disodium acetate titration method and applicable determination range of each method.
--- Part 6.Determination of the amount of zinc. The purpose is to specify the flame atomic absorption spectrometry method and the applicable method for the determination of zinc in gold ore
set range.
--- Part 7.Determination of iron content. The purpose is to specify the potassium dichromate titration method for the determination of iron in gold ore and its applicable determination
scope.
--- Part 8.Determination of sulfur content. The purpose is to specify the barium sulfate gravimetric method and the combustion-acid-base titration method for the determination of sulfur in gold ore
And the applicable measurement range of each method.
--- Part 9.Determination of carbon content. The purpose is to specify the ethanol-ethanolamine-potassium hydroxide titration method and method for the determination of carbon content in gold ores.
Applicable measurement range.
--- Part 10.Determination of the amount of antimony. The purpose is to specify the cerium sulfate titration method and the hydride generation-principle method for the determination of antimony in gold ores.
Sub-fluorescence spectroscopy and the applicable measurement range of each method.
--- Part 12.Determination of the amount of arsenic, mercury, cadmium, lead and bismuth atomic fluorescence spectrometry. The purpose is to regulate arsenic, mercury, cadmium,
Hydride generation-atomic fluorescence spectrometry for the determination of lead and bismuth and its applicable measurement range.
--- Part 13.Determination of the amount of lead, zinc, bismuth, cadmium, chromium, arsenic and mercury Inductively coupled plasma atomic emission spectrometry. The purpose is
Inductively coupled plasma atomic emission spectrometry for the determination of lead, zinc, bismuth, cadmium, chromium, arsenic and mercury in specified gold ores and its application
range of measurement.
--- Part 14.Determination of the amount of thallium Inductively coupled plasma atomic emission spectrometry and inductively coupled plasma mass spectrometry. head
Inductively Coupled Plasma Atomic Emission Spectrometry and Inductively Coupled Plasma Mass Spectrometry for the Determination of Thallium in Gold Ore
method and the applicable measurement range of each method.
--- Part 15.Determination of copper, lead, zinc, silver, iron, manganese, nickel, cobalt, aluminum, chromium, cadmium, antimony, bismuth, arsenic, mercury, selenium, barium and beryllium
Combined plasma mass spectrometry. The purpose is to specify copper, lead, zinc, silver, iron, manganese, nickel, cobalt, aluminum, chromium, cadmium, antimony, bismuth, arsenic,
Inductively coupled plasma mass spectrometry and applicable measurement ranges for the determination of mercury, selenium, barium and beryllium.
Gold ore chemical analysis method
Part 8.Determination of sulfur content
1 Scope
This document specifies the method for the determination of sulfur content and available sulfur content in gold ore.
This document is applicable to the determination of sulfur content and available sulfur content in gold ore. Method 1, Method 3 Measuring range. the mass fraction is 1.00%~
20.00%; method 2 measurement range. mass fraction is 0.10%~20.00%.
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references
For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
this document.
GB/T 17433 Basic Terms for Chemical Analysis of Metallurgical Products
3 Terms and Definitions
The terms and definitions defined in GB/T 17433 apply to this document.
4 Method 1 barium sulfate gravimetric method
4.1 Principle
After the sample is semi-melted by the mixed flux of sodium carbonate, zinc oxide and potassium permanganate at 780°C, the soluble matter is dissolved in water, and the sulfur is converted into sulfate radical for further processing.
into the solution, and then use barium chloride to precipitate the sulfate radicals in the solution.
sulfur content. In the tested material, less than 10mg of fluorine does not interfere with the determination.
4.2 Reagents or materials
Unless otherwise stated, only reagents and distilled or deionized water or water of equivalent purity were used in the test confirmed to be of analytical grade.
4.2.1 Mixed flux. Mix anhydrous sodium carbonate, zinc oxide and potassium permanganate in a mass ratio of 1.1.0.1, grind finely, and mix well.
4.2.2 Hydrochloric acid, ρ=1.19g/mL.
4.2.3 Hydrogen peroxide, φ=30%.
4.2.4 Anhydrous sodium carbonate solution, ρ=20g/L.
4.2.5 Barium chloride solution, ρ=100g/L. use after filtration.
4.2.6 Silver nitrate solution, ρ=10g/L. Add 0.15mL of nitric acid with ρ=1.42g/mL to every 100mL silver nitrate solution
0.20mL.
4.2.7 Methyl orange indicator, ρ=1g/L.
4.3 Instruments and equipment
4.3.1 For muffle furnace, the maximum temperature is not lower than 1100°C, and the common temperature is 700°C~800°C.
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