GB/T 1429: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 1429-2025 | English | RFQ |
ASK
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3 days [Need to translate]
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Proximate analysis of carbon materials
| Valid |
GB/T 1429-2025
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| GB/T 1429-2009 | English | 85 |
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Carbon materials -- Determination of the ash content
| Valid |
GB/T 1429-2009
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| GB/T 1429-1985 | English | 199 |
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2 days [Need to translate]
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Carbon materials--Determination of the ash content
| Obsolete |
GB/T 1429-1985
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Basic data | Standard ID | GB/T 1429-2025 (GB/T1429-2025) | | Description (Translated English) | Proximate analysis of carbon materials | | Sector / Industry | National Standard (Recommended) | | Date of Implementation | 2026-03-01 | | Older Standard (superseded by this standard) | GB/T 1429-2009, GB/T 24527-2009 | GB/T 1429-2009: Carbon materials -- Determination of the ash content---This is a DRAFT version for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.
Carbon materials. Determination of the ash content
ICS 29.050
Q52
National Standards of People's Republic of China
Replacing GB/T 1429-1985
Carbon materials - Determination of ash content
Posted 2009-07-15
2010-04-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard replaces GB/T 1429-1985 "Determination of ash content of carbon materials."
The main difference compared with the original standard criteria are as follows.
--- Increase the "scope" section;
--- Original standard test procedures in the bottom block sample "size is 0.3mm" to "particle size of 0.2mm";
--- Original standard test conditions of high temperature furnace and the "850 ± 20 ℃" to "850 ℃ ± 10 ℃";
--- Standardized format and some units.
The standard proposed by China Iron and Steel Association.
This standard is under the jurisdiction of the National Steel Standardization Technical Committee.
This standard was drafted. Wuhan University of Science and Technology, Metallurgical Industry Information Standards Institute, Jilin Carbon Co., Ltd.
The main drafters of this standard. Zhao Minlun, Ho Xuan-ming, Oriole, Wu Yanhua, Sun Wei.
This standard replaces the standards previously issued as follows.
--- GB/T 1429-1978, GB/T 1429-1985.
Carbon materials - Determination of ash content
1 Scope
This standard specifies the terms and definitions, instruments and equipment for measuring ash content of carbonaceous materials, and prepared to take the test step, the junction of the sample
If calculated, precision and test reports.
This standard applies to the determination of the ash content of the carbon materials.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 1427 carbon material sampling method
GB/T 8170 repair value expressed about the rules and limit values \u200b\u200band judgment
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
Carbon materials air dried to constant weight the sample burning residue of the original amount of the sample accounted for the percentage content of 850 ℃ ± 20 ℃.
3.2
Carbon materials at a temperature not exceeding 50 ℃ drying 1h continuous quality changes after the sample is not more than 0.1%, then the sample is called air
Dried samples.
4 instruments and equipment
4.1 Analysis of balance. a sense of the amount of 0.1mg.
4.2 porcelain Ark. size not less than 60mm × 25mm × 16mm.
4.3 Glass dryers. built-in color gel.
4.4 crucible tongs.
4.5 high-temperature furnace. with thermostat can keep 850 ℃ ± 10 ℃, together with thermocouple and temperature indicating instrument. High temperature furnace rear wall having an insertion
Thermocouple circular hole. Position of the hole should be the point of contact thermocouple heat in an oven heated area, the door has a hole diameter of 15mm ~ 20mm.
5 samples taken and prepared
5.1 carbon materials sampling conducted in accordance with GB/T 1427 regulations.
5.2 Preparation of the sample taken 5.1 to a particle size of not more than 20mm, the sample quality is not less than 0.5kg.
5.3 The sample was provided by quartering shrink 5.2 points, take 50g ~ 60g chronology, all through the 0.15mm standard sieve mesh.
5.4 5.3 The sample provided air drying, air drying method. the sample into the dish, spread into a uniform thin layer, at temperature
Dried at no more than 50 ℃, reach air dry.
5.5 Carbon Paste sample size is 0.5mm. Bottom block samples after electrolysis is prepared, to get rid of the surface of the electrolyte, a particle size of 0.2mm.
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