GB/T 6730.50-2016Iron ores - Determination of carbon content - Gas volumetric method (English PDF)
铁矿石 碳含量的测定 气体容量法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 30, 2016
Implementation date
September 1, 2017
Scope
GB/T 6730.50-2016 is the English-translated version of 铁矿石 碳含量的测定 气体容量法.
GB/T 6730.50-2016 is the Chinese standard "Iron ores - Determination of carbon content - Gas volumetric method". Its scope clause reads: This part of GB/T 6730 specifies the method for the determination of carbon content in iron ores by gas volumetric methods.
This section applies to the determination of carbon content in iron ore, iron concentrate, sinter and pellets. Measurement range (mass fraction). 0.10% ~ 10.00%.
Its clauses include normative reference documents; principle; reagents and materials.
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Document preview — GB/T 6730.50-2016
National Standard of the People's Republic of China
- ICS
- 73.060.10
- Classification
- D 31
- Replacing
- GB/T 6730.50-1986
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 normative reference documents
- 3 principle
- 4 reagents and materials
1 Scope
This part of GB/T 6730 specifies the method for the determination of carbon content in iron ores by gas volumetric methods.
This section applies to the determination of carbon content in iron ore, iron concentrate, sinter and pellets. Measurement range (mass fraction). 0.10% ~
10.00%.
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.
Iron and steel - Determination of carbon content - Burning furnace gas after combustion method GB/T 223.69-2008
Preparation of pre - dried samples for analysis of iron ore GB/T 6730.1
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 placed in a high temperature furnace (1200 ° C to 1300 ° C) and heated and oxygen was introduced to burn the sample and the carbon was completely converted to carbon dioxide.
After the removal of sulfur dioxide, the mixed gas is collected in the gas trachea. And then absorb the carbon dioxide in the potassium hydroxide solution to absorb
The difference between the volume before and after the volume is the volume of carbon dioxide, thereby calculating the carbon content.
4 reagents and materials
4.1
anhydrous calcium oxide.
4.2
Soda asbestos or soda lime.
4.3
flux, tin, copper, copper oxide (carbon content shall not exceed 0.005%).
4.4
Desulfurization agent, active manganese dioxide or silver vanadate, granular. Preparation of silver vanadate. Weigh 11.7 g of ammonium vanadate, dissolved in 400 mL of hot water,
Another 17g of silver nitrate, dissolved in.200mL of water, the two solutions are mixed, the formation of yellow precipitated with a funnel or filter paper filter to
Washed with water and dried at 110 ° C.
4.5
sulfuric acid, rho = 1.84 g/mL.
4.6 level bottle filled solution
Sulfuric acid solution (1 1000) plus a few drops of methyl orange (1g/L), to a stable light red, can also be used sodium chloride
Acid solution, take 26 g of sodium chloride dissolved in 74mL water, and add methyl orange indicator (1g/L) a few drops, add sulfuric acid (12) to red.
4.7
potassium permanganate - potassium hydroxide lotion, weighed 30g potassium hydroxide dissolved in 70mL saturated potassium permanganate solution.
4.8 potassium hydroxide absorption solution, 400g/L
Weigh 400g potassium hydroxide dissolved in water, diluted to 1000mL.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Similar standards
Editions of GB/T 6730.50
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 6730.50-2016 | Iron ores - Determination of carbon content - Gas volumetric method | current edition | Current |
| GB/T 6730.50-1986 | Iron ores - Determination of carbon content - Gas volumetric method | previous edition | Superseded |
This page sells the current edition, GB/T 6730.50-2016. Earlier editions are listed for reference only.
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Related Standards
GB/T 6730.51-2023 — Iron ores—Determination of carbon content in carbonate—The caustic asbestos absorption gravimetric method
GB/T 6730.49-1986 — Methods for chemical analysis of iron ores. The flame atomic absorption spectrophotometric method for the determination of sodium and potassium content
GB/T 6730.51-1986 — Methods for chemical analysis of iron ores. The caustic asbestos absorption gravimetric method for the determination of carbon content in carbonate
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