GB/T 6730.50-2016 in English
VALIDIron ores--Determination of carbon content--Gas volumetric method
- Issued on:2016-12-30
- Implemented on:2017-09-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
GB/T 6730的本部分规定了用气体容量法测定铁矿石中碳含量的方法。?
本部分适用于铁矿石、铁精矿、烧结矿和球团矿中碳含量的测定。测定范围（质量分数)：0.10％～10.00％。
Introduction
GB/T6730.50-2016 Standard Interpretation
Background and Significance: GB/T6730.50-2016 is an important national standard for the determination of carbon content in iron ore, replacing the old version GB/T6730.50-1986. This standard is mainly applicable to the determination of carbon content in iron ore, iron ore concentrate, sintered ore and pelletized ore, ranging from 0.10% to 10.00% by mass, and is of great significance in the steel industry.
Instruments and Equipment
| Instrument Name | Description | Technical Requirements |
|---|---|---|
| Tubular Furnace | High Temperature Combustion Equipment | Temperature controlled at 1200℃~1300℃, equipped with oxygen cylinder (purity ≥99.5%) |
| Carbon Determinator | Gas Volume Measuring Device | Gas Tube Accuracy ±0.5mL, Potassium Hydroxide Absorption Liquid Concentration 400g/L |
| Long Hook | High temperature furnace operating tools | Made of low carbon nickel-chromium wire or heat-resistant low alloy steel, used to push and pull porcelain boats |
Explanation of professional terms and practical applications
Gas volumetric method: The principle is to oxidize carbon into carbon dioxide by burning the sample at high temperature, and measure its volume change through potassium hydroxide absorption liquid. It is suitable for the determination of total carbon content in iron ore.
Blank test: It is used to eliminate the influence of instrument and environmental factors on the results. Before the formal test, it is necessary to repeat the blank test several times to ensure the stability of the system.
Comparison of standard frameworks
| Dimensions | Old version (GB/T6730.50—1986) | New version (GB/T6730.50-2016) |
|---|---|---|
| Scope of application | Applicable only to iron ore | Extended to iron concentrate, sinter and pellets |
| Determination principle | Based on the change in carbon dioxide volume | New oxygen purity requirement (≥99.5%) |
| Analysis steps | No normative reference documents are specified | Add warnings, normative references and instrument long hook expressions |
Implementation recommendations
Staff training: Personnel using this standard should have laboratory work experience, especially in high-temperature combustion and gas volumetric method.
Equipment calibration: Carbon determination instruments need to be calibrated regularly to ensure that the accuracy of the gas tube meets the requirements (±0.5mL). The instrument connection part should be strictly checked for leaks.
Data recording and analysis: The measurement results should be rounded off according to the rules of GB/T8170 and retain two decimal places. It is recommended to use professional software to perform statistics and analysis on the test data.
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GB/T 6730.88-2024 in English
Iron ores—Determination of chlorine content—X-ray fluorescence spectrometric method
2024-06-29 -
GB/T 8454-2020 in English
Reduced ilmenite powder for welding rob-Determination of ferrous iron content- Potassi um dichromate titrimetric method
2020-06-02 -
GB/T 42522-2023 in English
Testing method for static air leakage rate of iron ore sintering system
2023-05-23 -
GB/Z 197-2026 in English
Iron ores—Determination of various elements—Fusion preparation method of X-ray fluorescence spectrometry
2026-07-30 -
GB/T 34211-2017 in English
Iron ores--Method for determination of iron reduction softening drippinger performance under load
2017-09-07 -
GB/T 6730.1-2016 in English
Iron ores―Preparation of predried test samples for chemical analysis
2016-02-24 -
GB/T 20565-2022 in English
Iron ores and direct reduced iron—Vocabulary
2022-04-15
