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GB/T 6730.32-2013: Iron ores -- Determination of vanadium content -- The ammonium ferrous sulfate titrimetric method
Status: Valid GB/T 6730.32: Evolution and historical versions
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| GB/T 6730.32-2013 | English | 279 |
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Iron ores -- Determination of vanadium content -- The ammonium ferrous sulfate titrimetric method
| Valid |
GB/T 6730.32-2013
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| GB/T 6730.32-1986 | English | 199 |
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Methods for chemical analysis of iron ores--The ferrous sulfate volumetric method for the determination of vanadium content
| Obsolete |
GB/T 6730.32-1986
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PDF similar to GB/T 6730.32-2013
Basic data | Standard ID | GB/T 6730.32-2013 (GB/T6730.32-2013) | | Description (Translated English) | Iron ores -- Determination of vanadium content -- The ammonium ferrous sulfate titrimetric method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D31 | | Classification of International Standard | 73.060.10 | | Word Count Estimation | 12,164 | | Older Standard (superseded by this standard) | GB/T 6730.32-1986 | | Quoted Standard | GB/T 6379.1; GB/T 6379.2; GB/T 6682; GB/T 6730.1; GB/T 8170; GB/T 10322.1; GB/T 12805; GB/T 12806; GB/T 12808 | | Regulation (derived from) | National Standards Bulletin 2013 No. 6 | | 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 | | Summary | This standard specifies the ferrous ammonium sulfate titration of vanadium content. This section applies to natural iron ore, iron ore, iron ore, sinter and pellets Determination of vanadium content, measurement range (mass fraction): 0. 100 % ~ 1. 00%. | GB/T 6730.32-2013: Iron ores -- Determination of vanadium content -- The ammonium ferrous sulfate titrimetric method
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Iron ores. Determination of vanadium content. The ammonium ferrous sulfate titrimetric method
ICS 73.060.10
D31
National Standards of People's Republic of China
Replacing GB/T 6730.32-1986
Determination of vanadium content of iron ore
Ferrous ammonium sulfate titration
Issued on. 2013-05-09
2014-02-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This section drafted in accordance with GB/T 1.1-2009 given rules.
This Part replaces GB/T 6730.32-1986 "method of chemical analysis of iron, ferrous ammonium sulfate volumetric method for the determination of vanadium content."
This part of this revision, the name was changed to "iron ore vanadium content - The ammonium ferrous sulfate titration method." Added "Warning"
"2 Normative references", "5 instrument", "9 test reports" and other sections and content, and the following provisions were modified.
--- Original introduction, the range is now Chapter 1, measurement range from "0.1%" to "0.100% to 1.00%";
--- Original Chapter 1, Chapter 3 now, and change the name of this chapter;
--- Chapter 2 of the original, now in Chapter 4, increasing the water analysis reagents and instructions to modify the content and concentration of representation;
--- Original Chapter 3, Chapter 6 now, to increase the "laboratory sample";
--- Original Chapter 4, is now in Chapter 7, modify Weigh Sample volume represents an increase of "carbonate - boric acid flux sample pretreatment party
Law "," measurement "press" sample processing, vanadium oxide, titration "to modify;
--- Original Chapter 5, Chapter 6, Section 8 now, and modify the results of the calculation formula in the formula amount units; regulate expression of precision, allowing poor repair
To r, R.
This part is proposed by the China Iron and Steel Association.
This part of the National Iron ore and direct reduced iron Standardization Technical Committee (SAC/TC317) centralized.
This section is drafted. Panzhihua Iron and Steel, Metallurgical Industry Information Standards Institute, National vanadium and titanium products Supervision and Inspection Center (chips).
The main drafters of this section. Yang New Energy, Zhang Yudong, Li Xiaoqing, Zheng Xiaomin, Chenzi Bin, Bin Xi, Xu Ping, Zhou open, Ye Yunliang,
Yanqi Guang, Guo Jinhui.
This part of the standard replaces the previous editions are.
--- GB/T 1376-1978, GB/T 6730.32-1986.
Determination of vanadium content of iron ore
Ferrous ammonium sulfate titration
Warning --- Use this section shall be a person experiences regular laboratory work. This section does not point out all possible security asked
question. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.
1 Scope
This section provides the ammonium ferrous sulfate titration method for the determination of vanadium content.
This section applies to natural iron ore, the determination of iron ore, iron ore, sinter and pellets vanadium content measurement range (mass fraction
Number). 0.100% to 1.00%.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 6379.1 measurement methods and results of Accuracy (trueness and precision) - Part 1. General principles and definitions
GB/T 6379.2 measurement methods and results of Accuracy (trueness and precision) - Part 2. Determine the standard measurement method to repeat
Of the basic methods of reproduction
Laboratory use specifications and test methods GB/T 6682 Analysis
GB/T 6730.1 Method for analysis of chemical analysis of iron pre-dried sample preparation
GB/T 8170 repair value expressed about the rules and limit values \u200b\u200band judgment
GB/T 10322.1 iron ore sampling and sample preparation methods
GB/T 12805 Laboratory glassware Burettes
GB/T 12806 Laboratory glassware single marking flask
GB/T 12808 Laboratory glassware single marking pipette
Principle 3
Sodium peroxide or mixed samples of molten flux, acidified with sulfuric acid, first with ferrous vanadium, chromium and other substances reducing the oxidation state, and then use high
Potassium permanganate vanadium (Ⅳ) oxide to vanadium (Ⅴ), an excess of potassium permanganate in the presence of urea to nitrite reduction to N- benzene-generation anthranilic
Acid as indicator, titrated with ferrous ammonium sulfate standard solution titration, whereby the determination of vanadium content.
4 Reagents and materials
Unless otherwise indicated in the analysis using only recognized as analytical reagents and third grade GB/T 6682 specified above or distilled water
Deionized water or equivalent purity.
4.1 sodium peroxide.
4.2 mixed flux, 2 parts of anhydrous sodium carbonate and 1 part finely and mix boric acid, dried and set aside.
4.3 graphite.
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