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GB/T 30897-2025: Steel slag for sintering
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
GB/T 30897-2025	English	119	Add to Cart	3 days [Need to translate]	Steel slag for sintering
GB/T 30897-2014	English	139	Add to Cart	3 days [Need to translate]	Magnetic powder from steel slag for sintering

GB/T 30897-2025: Steel slag for sintering

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ICS 77.140.99 CCSH34 National Standards of the People's Republic of China Replaces GB/T 30897-2014 and GB/T 24184-2009 Sintering steel slag Published on 2025-08-29 Implemented on 2026-03-01 State Administration for Market Regulation The State Administration for Standardization issued a statement.

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents". Drafting. This document supersedes GB/T 24184-2009 "High-calcium desulfurization slag for sintering flux" and GB/T 30897-2014 "Magnetic separation slag steel for sintering". This document, titled "Powder," merges and revises two standards, GB/T 24184-2009 and GB/T 30897-2014, except for structural adjustments and editorial changes. In addition, the main technical changes in this document compared to the original standard are as follows. a) The contents of calcium oxide, magnesium oxide, silicon dioxide, phosphorus, and sulfur in the desulfurization residue were adjusted (see Table 1, Table 1 of GB/T 24184-2009); b) The requirements for the aluminum oxide content in desulfurization slag have been increased (see Table 1); c) The iron content in the magnetically separated steel slag powder was changed (see Table 2, Table 1 of GB/T 30897-2014); d) Increased particle size requirements (see 4.2); e) Additional requirements have been added (see 4.4); f) Factory inspection and type inspection have been added (see 6.2 and 6.3). Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents. This document was proposed by the China Iron and Steel Association. This document is under the jurisdiction of the National Steel Standardization Technical Committee (SAC/TC183). This document was drafted by. Shanghai Meishan Iron & Steel Co., Ltd., China Metallurgical Construction Research Institute Co., Ltd., Beijing University of Science and Technology, and Baowu Environmental Protection Equipment Co., Ltd. Nanjing Resource Utilization Co., Ltd., Shougang Jingtang Iron & Steel United Co., Ltd., Beijing Shougang International Engineering Technology Co., Ltd., Metallurgical Industry Industry Information Standards Research Institute, Shanghai University, Hangzhou Xiruidi Technology Co., Ltd., Qingdao University of Technology, and Hangzhou Ruikun Information Technology Co., Ltd. The main drafters of this document are. Hong Jianguo, Lu Xionggang, Wang Xiaojie, Qiu Jinhui, Li Guangshi, Zhou Jian, Zhou Tong, Xie Zhaohui, Wang Guochuan, and Su Wei. Lü Wen, Zhang Ruopeng, Zhou Guihai, Chen Jian, Wang Jiangwei, Yan Lei, Zhang Liangliang, Lan Jun, Yang Xiaoqing, Cheng Zhengming, Li Wen, Zhang Hairong, Hu Jianguang, Zhang Yi Zhang Qingjian, Han Jiayou, Zhao Chengxian, Cheng Mingke, Wang Lili, Luo Zhenyong, Wang Tongbin, Cheng Weihua, Wang Kun, Yu Jingyao, Zhang Yuanchun, Lei Rongrong, Zheng Yang. The document replaced by this document has been released in the following versions. ---GB/T 24184, first published in.2009; ---GB/T 30897 was first published in.2014, and this is its first revision. Sintering steel slag 1.Scope This document specifies the technical requirements, test methods, inspection rules, storage, transportation, and quality certification documents for steel slag used in sintering. This document applies to desulfurized slag and magnetically separated steel slag powder used in sintering.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included. For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies. This document. GB/T 2007.7 General Rules for Sampling and Sample Preparation of Bulk Mineral Products - Particle Size Determination Method - Manual Sieving Method GB/T 6730.2 Determination of moisture content in iron ore by gravimetric method GB/T 38216.4 Determination of total iron content in steel slag by titanium trichloride-potassium dichromate titration method YB/T 140 Chemical Analysis Methods for Steel Slag YB/T 804 Terminology for Steel Slag and its Treatment and Utilization YB/T 6056 Determination of Calcium Oxide Content in Steel Slag by EDTA Titration YB/T 6057 Determination of Iron, Silicon, Aluminum, Calcium, Magnesium and Manganese Content in Steel Slag - Inductively Coupled Plasma Atomic Emission Spectrometry 3.Terms and Definitions The terms and definitions defined in YB/T 804 and the following terms and definitions apply to this document. 3.1 Desulfurization slag produced by the external desulfurization process of molten iron using calcium-based desulfurizing agents. 3.2 After being crushed and magnetically separated, steel slag is obtained with a total iron content (mass fraction) greater than or equal to 20% and a particle size less than 10 mm. Steel slag powder. 4.Technical Requirements 4.1 Chemical composition The chemical composition of desulfurization slag used in sintering shall conform to the requirements of Table 1.The chemical composition of magnetically separated steel slag powder used in sintering shall conform to the requirements of Table 2. Table 1.Chemical composition (mass fraction) of desulfurization residue CaO MgO Al2O3 SiO2 PS ≥46.0 ≤3.0 ≤18.0 ≤1 Negotiable between supply and demand parties Table 2 Chemical composition (mass fraction) of magnetically separated steel slag powder Level I II III Total iron (TFe) ≥48 ≥35 ≥20 The phosphorus pentoxide (P2O5) content is no more than 2.0%, which can also be negotiated between the two parties. 4.2 Particle size The particle size range of steel slag used for sintering is 0mm~10mm, with particles larger than 10mm ≤10% and particles smaller than 5mm ≤10%. ≥85%. 4.3 Moisture content Moisture content not exceeding 12%. 4.4 Other The calcium, magnesium, silicon, and sulfur content in the magnetically separated steel slag powder used for sintering shall be negotiated between the supplier and the buyer. 5.Test Methods 5.1 The determination of total iron content shall be carried out in accordance with the provisions of GB/T 38216.4. 5.2 The determination of calcium oxide content shall be carried out in accordance with the provisions of YB/T 6056. 5.3 The determination of magnesium oxide content shall be carried out in accordance with the provisions of YB/T 6057. 5.4 The determination of aluminum oxide content shall be carried out in accordance with the provisions of YB/T 6057. 5.5 The determination of silica content shall be carried out in accordance with the provisions of YB/T 6057. 5.6 The determination of phosphorus content shall be carried out in accordance with the provisions of YB/T 140. 5.7 The determination of sulfur content shall be carried out in accordance with the provisions of YB/T 140. 5.8 Particle size determination shall be carried out in accordance with the provisions of GB/T 2007.7. 5.9 The moisture content shall be determined in accordance with the provisions of GB/T 6730.2.

6 Inspection Rules

6.1 Batching During product quality inspection, the two products, desulfurization slag for sintering and magnetic separation steel slag powder, must be inspected separately in batches of 500 tons. A batch of less than 500 tons is counted as one batch. 6.2 Factory Inspection The factory inspection items are chemical composition, particle size, and moisture content. 6.3 Type Testing Type testing should be conducted in any of the following situations. a) When raw materials or production processes change; b) Upon resumption of production after a shutdown of one month or longer; c) When the factory inspection results differ significantly from the previous type inspection results; d) During normal production, a type test is required once a year. 6.4 Judgment Rules If all factory inspection items meet the requirements of Tables 1 and 2, the factory inspection is deemed合格 (qualified). If any item fails the inspection, it is permissible to [take appropriate action]. For any non-conforming items, a spare sample shall be prepared for retesting. If the sample passes the retest, the batch shall be deemed合格 (qualified); otherwise, it shall be deemed不合格 (unqualified). 7.Storage, transportation and quality certificate 7.1 The two types of products must be stored separately. During transportation and storage, dust should be prevented from flying and relevant environmental protection regulations should be followed. 7.2 The contents of the quality certificate include. a) Product Name; b) Product level; c) Production unit and batch number; d) Executable file number; e) Quality inspection report; f) Inspectors. ...