GB/T 30897-2025Steel slag for sintering (English PDF)

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

GB/T 2007.7

GB/T 6730.2

GB/T 38216.4

3 Terms and Definitions

The terms and definitions defined in YB/T 804 and the following terms and definitions apply to this document.

4 Technical Requirements

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

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.