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GB/T 8729-2017: Foundry coke
Status: Valid GB/T 8729: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 8729-2017 | English | 139 |
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3 days [Need to translate]
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Foundry coke
| Valid |
GB/T 8729-2017
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| GB/T 8729-1988 | English | 159 |
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2 days [Need to translate]
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Foundry coke
| Obsolete |
GB/T 8729-1988
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PDF similar to GB/T 8729-2017
Standard similar to GB/T 8729-2017 GB/T 2286 GB/T 4000 GB/T 2001 GB/T 1996 Basic data | Standard ID | GB/T 8729-2017 (GB/T8729-2017) | | Description (Translated English) | Foundry coke | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H32 | | Classification of International Standard | 75.160.10 | | Word Count Estimation | 7,771 | | Date of Issue | 2017-10-14 | | Date of Implementation | 2018-05-01 | | Older Standard (superseded by this standard) | GB/T 8729-1988 | | Quoted Standard | GB/T 1997; GB/T 2001; GB/T 2006; GB/T 2286; GB/T 4511.1; GB/T 4511.2; GB/T 8170 | | Regulation (derived from) | National Standard Announcement 2017 No. 26 | | 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 technical requirements, test methods, inspection rules, transportation and quality certificates for foundry coke. This standard applies to coke used for cupola smelting. | GB/T 8729-2017: Foundry coke---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.
Foundry coke
ICS 75.160.10
H32
National Standards of People's Republic of China
Replacing GB/T 8729-1988
Foundry coke
Published on October 10,.2017
2018-05-01 Implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Administration released
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 8729-1988 "Foundry Coke". Compared with GB/T 8729-1988, the main technical content changes.
as follows.
--- Modified normative references (see Chapter 2);
--- Change the special grade to excellent grade (see Chapter 3);
---Modified "Block Size" to "Granularity"; change the size of >80mm, 80mm ~60mm, and >60mm to >120mm, respectively
120mm~80mm, 80mm~60mm (see Chapter 3);
--- Modify the index of crush strength, change the grade from ≥ 85.0 to ≥ 87.0; grade 1 from ≥ 81.0 to ≥ 83.0; grade 2 from ≥ 77.0
≥ 80.0 (see Chapter 3);
--- Modify the falling intensity index, change the superiority level from ≥ 92.0 to ≥ 93.0, the level from ≥ 88.0 to ≥ 89.0, and the level from ≥ 84.0
≥ 85.0 (see Chapter 3);
--- Added Appendix A (see Appendix A).
This standard is proposed by the China Iron and Steel Industry Association.
This standard is under the jurisdiction of the Technical Committee on Coking Chemistry of the National Coal Chemical Standardization Technical Committee (SAC/TC469/SC3).
This standard was drafted. Sinosteel Anshan Thermal Energy Research Institute Co., Ltd. and Metallurgical Industry Information Standards Institute.
The main drafters of this standard are Meng Qingbo, Xu Xiuli, Ma Yan, Jiang Yu, Wu Chenglin, Zhan Li, Hou Jinpeng, Zhang Shidong, Tang Shuai, Wang Xiong, and Zheng Jingsui.
The previous versions of the standards replaced by this standard are.
--- GB/T 8729-1988.
Foundry coke
1 Scope
This standard specifies the technical requirements, test methods, inspection rules, transportation and quality certificates for foundry coke.
This standard applies to coke used for cupola smelting.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 1997 Coke Sample Preparation and Preparation
GB/T 2001 coke industry analysis and determination method
GB/T 2006 Determination of coke mechanical strength
GB/T 2286 Determination of Total Sulfur Coke Content
GB/T 4511.1 Determination of true relative density, pseudo relative density and porosity of coke
GB/T 4511.2 Determination of Dropping Strength of Coke
GB/T 8170 Representation and Determination of Numerical Rounding Rules and Limit Values
3 Technical requirements
3.1 The technical indicators of foundry coke should meet the requirements of Table 1.
Table 1 Technical Specifications of Foundry Coke
index
grade
Excellent level 1
Particle size/mm >120, 120~80, 80~60
Moisture (Mt)/% ≤ 5.0
Ash content (Ad)/% ≤ 8.00 ≤ 10.00 ≤ 12.00
Volatile matter (Vdaf)/% ≤ 1.5
Sulfur content (St, d)/% ≤ 0.60 ≤ 0.80 ≤ 0.80
Crushing strength (M40)/% ≥87.0 ≥83.0 ≥80.0
Dropping strength (SI504) ≥93.0 ≥89.0 ≥85.0
Porosity (Ps)/% ≤40 ≤45 ≤45
Coking rate (< 40mm)/% ≤4.0
3.2 The intensity indicators M40 and SI504 can be used as options. When the values of these two indicators are inconsistent, the M40 value is used.
3.3 Moisture (%), volatile matter (%), apparent porosity (%), and pulverization rate (%) are not considered as quality acceptance indicators.
3.4 When there is special demand, the supply and demand sides shall negotiate and settle the matter.
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