GB/T 45126-2025Determination of carbon dioxide content of steel slag during carbonation fixation (English PDF)

Foreword

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.

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: China Metallurgical Construction Research Institute Co., Ltd., China Metallurgical Energy Conservation and Environmental Protection Co., Ltd., Gansu Jiugang Group Hongxing Steel China Metallurgical Corporation Limited, Suzhou Shijing Technology Co., Ltd., China Metallurgical Southern Urban Environmental Engineering Technology Co., Ltd., China Metallurgical Changtian Guo International Engineering Co., Ltd., Jiangsu Binxin Steel Group Co., Ltd., North China University of Water Resources and Electric Power, Shanxi Taigang Stainless Steel Co., Ltd.

China Iron and Steel Research Institute Co., Ltd., Shandong University, Guangxi Shenglong Metallurgical Co., Ltd., Shandong Taishan Iron and Steel Group Co., Ltd., Qian'an Jinyu Shougang Environmental Protection Technology Co., Ltd., Metallurgical Industry Information Standards Research Institute, Sichuan Dazhou Iron and Steel Group Co., Ltd., Lingyuan Iron and Steel Co., Ltd.

Co., Ltd., Tianjin Chengjian University, Hubei Jinshenglan Metallurgical Technology Co., Ltd., Baowu Environmental Science Wuhan Metal Resources Co., Ltd., Dahe Group Group Co., Ltd., MCC Heavy Industry (Tangshan) Co., Ltd., University of Science and Technology Beijing, Qingdao University of Technology, Southeast University, Xi'an University of Architecture and Technology, Shandong Iron and Steel Group Yongfeng Lingang Co., Ltd., Lingkuang Environmental Protection Technology (Shanghai) Co., Ltd., Xixia County Hengji Metallurgical Materials Co., Ltd., Wuyang Iron and Steel Co., Ltd., Yanshan University, Beijing Jianlong Heavy Industry Group Co., Ltd., Hesteel Dahe Energy and Environmental Technology Co., Ltd., Beijing Jianyan Bohe Technology Co., Ltd., Inner Mongolia Huayizhuo Materials Technology Co., Ltd.

The main drafters of this document are: Yue Changsheng, Peng D, Xia Chun, Qiu Jinhui, Jiang Xintai, Wang Haitao, Dong Shihong, Shao Yan, Zhu Qingde, Xiang Hao, Ye Hengdi, Lu Guanghua, An Dengfei, Lu Wen, Liu Changbo, Zhang Lei, Qiu Guibo, Wang Jiangwei, Lü Cungen, Ronghui, Yang Yan, Xu Xiaoming, Lin Tao, Chen Shuyun, Chang Jingcai, Yang Bentao, Yan Liang, Wang Minxin, Rui Yibin, Chen Jian, Zhang Ruopeng, Liu Tao, Liu Xiaogang, Huang Yuhong, Wei Jinchao, Qian Chunxiang, Kang Jiangang, Zhu Lilei, Zhang Mei, Liu Ming, Tang Chun, Jia Wenjun, Wang Penggang, Wu Yuedong, Shi Zhiqiang, Xu Fei, Zhou Jun, Su Wei, Xing Yi, Li Huijun, Wang Nian, Zhang Xu, Zhao Qingxin, Sun Yuping, Wang Guan, Li Yunyun, Wang Jinye, Wu Lei, Hu Gaofei, Gu Haigang, Lin Lu, Yi Guilan, Tian Yunxia, Li Shibin, Gao Huadong, Li Yiren, Tian Jinglei, Yang Baocang, Zhou Yang, Yu Jingyao, Yu Yang, Li Jiajie, Chen Lu, Wang Qiang, and Zhang Qingjian.

Carbonation of steel slag to fix carbon dioxide Content determination method Warning---People who use this document should have formal laboratory work experience. This document does not address all possible safety issues.

The user is responsible for taking appropriate safety and health measures and ensuring that the conditions stipulated by relevant national laws and regulations are met.

1 Scope

This document specifies the method for determining the content of carbonation-fixed carbon dioxide in steel slag by infrared absorption method.

This document is applicable to the determination of fixed carbon dioxide content in converter slag and electric furnace slag by carbonation, with a determination range of 0.2% to 30.0%.

2 Normative references

GB/T 2007.2

GB/T 6379.1

GB/T 6379.2

GB/T 6682

GB/T 8170

3 Terms and definitions

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

4 Principle

The sample is heated and burned in the oxygen flow of the high-frequency induction furnace, and the generated carbon dioxide is carried by the oxygen to the measuring chamber of the infrared analyzer.

Carbon dioxide absorbs infrared energy of a certain wavelength, and its absorption energy is proportional to its concentration. The mass of total carbon can be measured based on the change in the detector's absorption energy.

The sample was decomposed by hydrochloric acid, dissolved by sodium fluoride (hydrofluoric acid), and the residue was acid-washed, washed with water, and dried on acid-washed asbestos.

Determine the mass fraction of free carbon in the sample. The difference between the mass fraction of total carbon and free carbon is the mass fraction of fixed carbon, which is then calculated Obtain the mass fraction of carbon dioxide fixed by the sample.