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GB/T 6730.16-2016: Iron ores -- Determination of sulfur content -- Barium sulfate gravimetric method
Status: Valid GB/T 6730.16: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 6730.16-2016 | English | 78 |
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Iron ores -- Determination of sulfur content -- Barium sulfate gravimetric method
| Valid |
GB/T 6730.16-2016
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| GB/T 6730.16-1986 | English | 199 |
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Methods for chemical analysis of iron ores. The barium sulfate gravimetric method for the determination of sulfur content
| Obsolete |
GB/T 6730.16-1986
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PDF similar to GB/T 6730.16-2016
Basic data | Standard ID | GB/T 6730.16-2016 (GB/T6730.16-2016) | | Description (Translated English) | Iron ores -- Determination of sulfur content -- Barium sulfate gravimetric method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D31 | | Classification of International Standard | 73.060 | | Word Count Estimation | 10,185 | | Date of Issue | 2016-10-13 | | Date of Implementation | 2017-09-01 | | Older Standard (superseded by this standard) | GB/T 6730.16-1986 | | Regulation (derived from) | National Standard Notice No.1716 of 2016 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | GB/T 6730.16-2016: Iron ores -- Determination of sulfur content -- Barium sulfate gravimetric method
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Iron ores - Determination of sulfur content - Barium sulfate gravimetric method
ICS 73.060.10
D31
National Standards of People's Republic of China
Replace GB/T 6730.16-1986
Iron ore - Determination of sulfur content - Barium sulfate gravimetric method
2016-10-13 released
2017-09-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Foreword
GB/T 6730 "iron ore" is divided into dozens of parts.
This part is part 16 of GB/T 6730.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part of the GB/T 6730.16-1986 "iron ore chemical analysis method barium sulfate gravimetric determination of sulfur". This part with
GB/T 6730.16-1986 compared to the editorial changes, the main technical changes are as follows.
--- the name changed to "iron ore sulfur content determination barium sulfate weight method";
- Added "warning" "normative reference document" "instrument" "test report" "Appendix B" "Appendix C" and so on;
--- The range of measurement is changed from "0.300% ~ 5.00%" to "0.030% ~ 5.00%";
--- sample decomposition method by sodium peroxide - sodium carbonate melt decomposition modified to sodium carbonate - zinc oxide semi - melt decomposition;
- leaching method by boiling leaching modified to electromagnetic stirring leaching;
The inter-laboratory precision tests were carried out, and the "allowable difference" was replaced by the statistical repeatability r and the reproducibility limit R.
This part is made by China Iron and Steel Industry Association.
This section is headed by the National Commission on Standardization of Iron Ore and Direct Reductive Iron (SAC/TC317).
This part of the main drafting unit. Changsha Mining and Metallurgy Research Institute limited liability company, Metallurgical Industry Information Standards Institute, Beilun immigration inspection
Quarantine Bureau, Anshan Iron and Steel Group Mining Company.
This part of the main drafters. Zhang Zhiyong, Li Zishang, statements, Chen Zibin, Lu Chunsheng, Zhou Haibo, Yang Lin, Chen Hehai, Chen Zhihua.
This part of the previous version of the standard to replace the release of the situation.
--- GB/T 6730.16-1986.
Iron ore - Determination of sulfur content - Barium sulfate gravimetric method
WARNING - Personnel using this section should have practical experience in formal laboratory work. This section does not indicate all possible security questions
question. It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the conditions set forth in the relevant national regulations.
1 Scope
This part of GB/T 6730 specifies the determination of sulfur content by barium sulfate gravimetric method.
This part is applicable to the determination of sulfur content in iron ore, iron concentrate, sinter and pellet. The determination range (mass fraction). 0.030% ~
5.00%.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
GB/T 6379.1 Accuracy of measurement methods and results (accuracy and precision) - Part 1. General and definitions
GB/T 6379.2 Accuracy of measurement methods and results (accuracy and precision) - Part 2. Determination of standard measurement methods
The basic method of sex and reproducibility
GB/T 6682 Analytical laboratory water specifications and test methods
Preparation of pre - dried samples for analysis of iron ore GB/T 6730.1
GB/T 6730.3 Methods for chemical analysis of iron ores - The gravimetric method for the determination of moisture content in samples
Representation and Judgment of Numerical Correction Rule and Limit Value of GB/T 8170
GB/T 10322.1 Iron Ore Sampling and Sample Preparation
3 principle
The sample was decomposed with a mixed solvent of sodium carbonate-zinc oxide, the sulfate ion was leached with water under electromagnetic stirring, and the hydroxide was removed by filtration,
Carbonates and other precipitation. The filtrate in the dilute hydrochloric acid solution, adding barium chloride, so that the formation of sulfate sulfate barium sulfate precipitation. Burning, weighing, according to sulfur
The quality of barium is calculated by the sulfur content.
4 Reagents and Materials
Unless otherwise stated, only the reagents identified as analytical reagents and those of Class 3 and Grade 3 in accordance with GB/T 6682 are used in the analysis.
Water or deionized water or water equivalent to its purity.
4.1 Calcium carbonate.
4.2 sodium carbonate - zinc oxide mixed flux, sodium carbonate (grinding to the particle size of less than 125μm) and zinc oxide by mass ratio of 3. 2 mix.
4.3 hydrofluoric acid, ρ = 1.15 g/L.
4.4 Hydrochloric acid, 1 1.
4.5 Sulfuric acid, 1 1.
4.6 Hydrogen peroxide, 30% (mass fraction).
4.7 anhydrous ethanol.
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