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YS/T 990.3-2014Methods for chemical analysis of copper matte. Part 3: Determination of sulfur content. Gravimetric method and combustion titration method (English PDF)

冰铜化学分析方法第3部分：硫量的测定重量法和燃烧滴定法

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Issued by

Ministry of Industry and Information Technology

Level / Type

National · Recommended

Issue date

October 14, 2014

Implementation date

April 1, 2015

Scope

YS/T 990.3-2014 is the English-translated version of 冰铜化学分析方法第3部分：硫量的测定重量法和燃烧滴定法.

YS/T 990.3-2014 — This section YS/T 990 specifies the method for determination of copper matte sulfur content. This section applies to the determination of copper ice sulfur content.

1 measured in the range of 13.00% - 26.00%; Tier 2 measurement range 11.00% ~ 23.00%.

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Document preview — YS/T 990.3-2014

National Standard of the People's Republic of China

ICS: 77.120.30
Classification: H 13

Issued by: Ministry of Industry and Information Technology

Foreword
1 Scope
2 Method 1. Gravimetric method
2.1 Method summary
2.2 Reagents
2.3 Sample
2.4 Analysis Steps

Foreword

YS/T 990 "Methods for chemical analysis of copper matte" is divided into 18 parts.

--- Part 1. Determination of copper content iodometry;

--- Part 2. Determination of gold and silver atomic absorption spectroscopy and fire assay;

--- Part 3. Determination of sulfur content - Gravimetric method and combustion titration method;

--- Part 4. Determination of the amount of bismuth atomic absorption spectrometry;

--- Part 5. Determination of the amount of fluorine ion selective electrode method;

--- Part 6. Determination of lead content - Atomic absorption spectrometry and Na2EDTA titration;

--- Part 7. Determination of cadmium content - Atomic absorption spectrometry;

--- Part 8. Determination of arsenic content by hydride generation - atomic fluorescence spectrometry, diethyl dithiocarbamate spectrophotometry silver and potassium bromate titration;

--- Part 9. Determination of iron content dichromate method;

--- Part 10. Determination of silicon dioxide content molybdenum blue spectrophotometric method and silicon potassium fluoride titration;

--- Part 11. Determination of the amount of nickel atom absorption spectrometry;

--- Part 12. Determination of the amount of chromium oxide of aluminum Azure S Spectrophotometry;

--- Part 13. Determination of magnesium oxide content - Atomic absorption spectrometry;

--- Part 14. Determination of the amount of zinc atomic absorption spectrometry and Na2EDTA titration;

--- Part 15. Determination of antimony content - Atomic absorption spectrometry;

--- Part 16. Determination of mercury content - Cold atomic absorption spectrometry;

--- Part 17. Determination of the amount of cobalt atomic absorption spectrometry;

--- Part 18. lead, zinc, nickel, arsenic, bismuth, antimony, calcium, magnesium, cadmium, cobalt content - Inductively coupled plasma atomic emission spectrometry.

This section YS/T Part 3 990.

Part 1 of this arbitration method.

This section drafted in accordance with GB/T 1.1-2009 given rules.

The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized.

This section is responsible for drafting unit. Zhongtiaoshan Nonferrous Metals Group Co., Ltd. Daye Nonferrous Metals Group Holdings Limited.

Part 1 Drafting Unit. Guangzhou Nonferrous Metal Research Institute.

Part 1 participated in the drafting unit. Tongling Nonferrous Metals Group Holdings Co., Ltd., Yunnan Copper Co., Ltd., silver colored Group Co., Ltd., Zhuzhou Smelter Group Co., Zhongtiaoshan Nonferrous Metals Group Co., Ltd. Daye Nonferrous Metals Group control Holdings Limited, Hangzhou Fuchunjiang Smelting Co., Ltd.

This section Method 2 drafting units. Beijing General Research Institute of Mining and Metallurgy.

Method 2 of this section participated in the drafting unit. Tongling Nonferrous Metals Group Holdings Co., Ltd., Yunnan Copper Co., Ltd., silver colored Group Co., Ltd., Zhuzhou Smelter Group Co., Zhongtiaoshan Nonferrous Metals Group Co., Ltd. Daye Nonferrous Metals Group control Holdings Limited, Yanggu Yoshimitsu Copper Co., Ltd., Shandong constant state Smelting Company.

1 Scope

This section YS/T 990 specifies the method for determination of copper matte sulfur content.

This section applies to the determination of copper ice sulfur content. 1 measured in the range of 13.00% - 26.00%; Tier 2 measurement range 11.00% ~ 23.00%.

2 Method 1. Gravimetric method

2.1 Method summary

After the sample sodium carbonate, zinc oxide, potassium permanganate semi-molten, dissolved in water soluble at 750 °C, barium chloride in acidic solution with Sulfate solution. The precipitate was filtered, after burning weighed mass of barium sulfate in a sample calculation of the mass fraction of sulfur.

2.2 Reagents

Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity.

2.2.1 Flux. Ten parts of anhydrous sodium carbonate and the eleven parts of zinc oxide, a mixed potassium permanganate, fine, and mix.

2.2.2 hydrochloric acid (11).

2.2.3 nitric acid (rho = 1.42g/mL).

2.2.4 sodium carbonate solution (20g/L), filtered to use.

2.2.5 aluminum chloride solution (100g/L), filtered to use.

2.2.6 citric acid solution (200g/L), filtered to use.

2.2.7 barium chloride solution (20g/L), filtered to use.

2.2.8 silver nitrate solution (10g/L). Weigh 0.5g of silver nitrate, with no chlorine ions dissolved in distilled water and diluted to 50mL, mixing, storage Stored in a brown bottle, add 1 drop to 2 drops of nitric acid (2.2.3).

2.2.9 ethanol.

2.2.10 methyl orange solution (1g/L).

2.3 Sample

2.3.1 Sample size not greater than 100µm.

2.3.2 Sample advance 105 °C ± 5 °C baking 1h, placed in a desiccator, cool to room temperature.

2.4 Analysis Steps

2.4.1 Sample

Weigh 0.20g sample, accurate to 0.0001g.

2.4.2 Determination of the number of Independently measured twice and averaged.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 7 pages — is available in the English PDF.

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