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GB/T 30900-2025: Slag agglomerate of LF refining furnace for steelmaking
Status: Valid GB/T 30900: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 30900-2025 | English | 139 |
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Slag agglomerate of LF refining furnace for steelmaking
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GB/T 30900-2025
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| GB/T 30900-2014 | English | 149 |
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Slag agglomerate of LF refining furnace for steelmaking
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GB/T 30900-2014
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Basic data | Standard ID | GB/T 30900-2025 (GB/T30900-2025) | | Description (Translated English) | Slag agglomerate of LF refining furnace for steelmaking | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H34 | | Classification of International Standard | 77.140.99 | | Word Count Estimation | 6,617 | | Date of Issue | 2025-08-01 | | Date of Implementation | 2026-02-01 | | Older Standard (superseded by this standard) | GB/T 30900-2014 | | Issuing agency(ies) | State Administration for Market Regulation, Standardization Administration of China | GB/T 30900-2025: Slag agglomerate of LF refining furnace for steelmaking---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT30900-2025
ICS 77.140.99
CCSH34
National Standard of the People's Republic of China
Replaces GB/T 30900-2014
LF furnace refined slag agglomerates for steelmaking
Released on August 1, 2025
Implementation on February 1, 2026
State Administration for Market Regulation
The National Standardization Administration issued
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document replaces GB/T 30900-2014 "LF furnace refined slag agglomerates for steelmaking". Compared with GB/T 30900-2014, except for the structure
In addition to adjustments and editorial changes, the main technical changes are as follows.
a) Added requirements for low silicon and low sulfur steel grades (see Table 1);
b) Added other element restrictions (see Table 1);
c) The drop height has been changed (see 4.4, Table 1 of the.2014 edition);
d) Added requirements for impurities (see 4.6);
e) Added environmental protection requirements for the use process (see 4.7);
f) Factory inspection and type inspection have been added (see 7.2 and 7.3);
g) The regulations on the deviation between the actual bag weight and the marked weight have been changed (see 8.1, 7.1 of the.2014 edition).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Iron and Steel Association.
This document is under the jurisdiction of the National Technical Committee on Steel Standardization (SAC/TC183).
This document was drafted by. Shandong Iron and Steel Group Rizhao Co., Ltd., Shougang Group Qian'an Iron and Steel Company, Shanxi Jingang Intelligent Manufacturing Technology Co., Ltd.
Industry Co., Ltd., Metallurgical Industry Information Standards Research Institute, Wuyang Iron and Steel Co., Ltd., Hangzhou Xiruidi Technology Co., Ltd., Hangzhou Ruikunxin
Information Technology Co., Ltd., Anhui University of Technology.
The main drafters of this document are. Liu Jianwei, Wang Xuexin, Qiu Jinhui, Wu Jiyu, Liu Zhentong, Qu Gui, Cao Yuntao, Hai Zhili, Chen Jian, Wang Xiaojie,
Wen Weixin, Wang Jiangwei, Li Qiang, Chen Shuyun, Zhang Ruopeng, Cheng Weihua, Tian Yunxia, Yu Jingyao, Zou Ming, Zhang Ruichao, Zhang Yuanchun, Wang Kun, Du Gang,
Cheng Weihua and Wang Tiantian.
The previous versions of this document and the documents it replaces are as follows.
---First published in.2014 as GB/T 30900-2014;
---This is the first revision.
LF furnace refined slag agglomerates for steelmaking
1 Scope
This document specifies the technical requirements, test methods, inspection rules, packaging, storage and quality certification of LF furnace refined slag agglomerates for steelmaking.
Ming book.
This document applies to LF furnace refined slag agglomerates (hereinafter referred to as agglomerates) used as steelmaking fluxes, slagging agents, desulfurizers, etc.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 2007.1 General rules for sampling and sample preparation of bulk mineral products - Manual sampling method
GB/T 2007.2 General rules for sampling and sample preparation of bulk mineral products - Manual sample preparation method
GB/T 2007.7 General rules for sampling and sample preparation of bulk mineral products - Particle size determination method - Manual sieving method
GB/T 3286.1 Chemical analysis methods of limestone and dolomite - Part 1.Determination of calcium oxide and magnesium oxide content - Complex drop
Flame atomic absorption spectrometry
YB/T 140 Chemical analysis method of steel slag
YB/T 4315-2012 Dust sludge agglomerates for steelmaking
YB/T 4724 Determination of silicon dioxide content in steel slag - Perchloric acid dehydrated gravimetric-silica molybdenum blue photometric method
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
It is used to improve the properties and composition of the refined slag system during the molten steel smelting process, has a certain shape and strength, and is formed by pressing or pre-melting.
Auxiliary raw materials.
3.2
low-silicon steel
A steel grade with a relatively low silicon content. Broadly speaking, it refers to a steel grade with a silicon content of less than 0.03%.
Note. This type of steel has a wide range of uses, mainly in the fields of automobile manufacturing, construction industry, machinery manufacturing, welding structures, electronic appliances, etc.
3.3
low-sulfur steel
Steels with lower sulfur content generally have a sulfur content of 0.005% to 0.01%.
4 Technical Requirements
4.1 The chemical composition of the agglomerates shall comply with the requirements in Table 1.
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