|
US$199.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 6730.50-2016: Iron ores -- Determination of carbon content -- Gas volumetric method
Status: Valid GB/T 6730.50: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 6730.50-2016 | English | 199 |
Add to Cart
|
3 days [Need to translate]
|
Iron ores -- Determination of carbon content -- Gas volumetric method
| Valid |
GB/T 6730.50-2016
|
| GB/T 6730.50-1986 | English | 239 |
Add to Cart
|
3 days [Need to translate]
|
Methods for chemical analysis of iron ores. The gas volumetric method for the determination of total carbon content
| Obsolete |
GB/T 6730.50-1986
|
PDF similar to GB/T 6730.50-2016
Basic data | Standard ID | GB/T 6730.50-2016 (GB/T6730.50-2016) | | Description (Translated English) | Iron ores -- Determination of carbon content -- Gas volumetric method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D31 | | Classification of International Standard | 73.060.10 | | Word Count Estimation | 10,170 | | Date of Issue | 2016-12-30 | | Date of Implementation | 2017-09-01 | | Older Standard (superseded by this standard) | GB/T 6730.50-1986 | | Regulation (derived from) | National Standard Notice No.27 of 2016 | | Issuing agency(ies) | General Administration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 6730.50-2016: Iron ores -- Determination of carbon content -- Gas volumetric 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 carbon content - Gas volumetric method
ICS 73.060.10
D31
National Standards of People's Republic of China
Replace GB/T 6730.50-1986
Iron ore - Determination of carbon content - Gas volume method
2016-12-30 release
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 50 of GB/T 6730.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB/T 6730.50-1986 "Determination of total carbon content by gas volumetric method for chemical analysis of iron ores"
GB/T 6730.50-1986 In addition to editorial changes, the main technical changes are as follows.
--- increase the warning, normative reference documents, test reports;
--- increased the purity of oxygen requirements;
--- increase the expression of the instrument in the long hook;
--- modified the blank test and verify the operational requirements of the test.
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 drafting unit. Anshan Iron and Steel Mining Group, Shougang Technology Research Institute, Anshan Iron and Steel Co., Ltd., Benxi Iron and Steel (Group) Co., Ltd.
Division, Metallurgical Industry Information Standards Institute.
The main drafters of this part. Li Yulin, Chen Zhihua, Gao Jingjun, Shen Hengchang, Sun Deming, Sun Lijun, Zhang Lei, Chen Zhibin.
This part of the previous version of the standard to replace the release of the situation.
--- GB/T 6730.50-1986.
Iron ore - Determination of carbon content - Gas volume 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 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, ρ = 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.
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 6730.50-2016_English be delivered?Answer: Upon your order, we will start to translate GB/T 6730.50-2016_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of GB/T 6730.50-2016_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 6730.50-2016_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay. Question 5: Should I purchase the latest version GB/T 6730.50-2016?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 6730.50-2016 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.
|