GB/T 32974-2024Methods of determination and calculation of heat balance in regenerative furnace of iron and steel industry (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.

This document replaces GB/T 32974-2016 "Test and calculation method for heat balance of regenerative industrial furnaces in the steel industry" and GB/T 32971-2016 "Test and calculation method for heat balance of regenerative ladle baking system in the steel industry", which is similar to GB/T 32974-2016 The main technical changes are as follows.

a) Added the test scope of heat balance of regenerative ladle baking system (see 4.3);

b) Increased the thermal balance test time of the ladle baking system (see 4.4);

c) The heat balance calculation units have been changed (see 4.5, Chapter 9, 4.5, Chapter 9 of the 2016 edition);

d) The frequency of flue gas sampling and analysis has been changed (see 8.2.4.1, 8.2.4.1 of the 2016 edition);

e) The smoke volume test method has been changed (see 8.2.4.2, 8.2.4.2 of the 2016 edition);

f) Added the test content and methods for ladle (see 8.2.10);

g) The wind speed range of heat dissipation on the furnace surface has been changed (see 9.2.6, 9.2.6 of the 2016 edition);

h) Added the calculation method of heat loss through the ladle lining, outer shell and ladle cover (see 9.2.12);

i) The oxidation burn test method has been changed (see 8.2.3.3, Appendix D of the 2016 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., Metallurgical Industry Information Standards Research Institute, Yingkou Institute of Technology, Shandong Huimin Technology Development Co., Ltd., Sinosteel Anshan Thermal Energy Research Institute Co., Ltd.

The main drafters of this document are: Cong Wei, Li Hongcui, Wang Jiangwei, Luan Caixia, Qiu Jinhui, Yang Xiuqing, Liu Jianwei, Chen Jian, Fan Tianjiao, Chen Qingjun, Zhang Ruopeng, Wu Kangkang, Zhao Chunzhu, and Yu Jingyao.

The previous versions of the documents replaced by this document are as follows.

— GB/T 32974, first issued in 2016, this is the first revision;

— GB/T 32971, first issued in 2016.

Regenerative Industrial Furnaces in the Steel Industry Thermal balance test and calculation method

1 Scope

This document specifies the heat balance test and calculation benchmarks, test object overview, recent Periodic production situation, test preparation, test steps, test content and methods, and calculation methods.

This document is applicable to the heat balance test and calculate.

2 Normative references

The contents of the following documents constitute 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.

YB/T 4209 Technical Specification for Regenerative Combustion in the Iron and Steel Industry YB/T 4773 Determination and calculation method of oxidation loss of steel billets

3 Terms and definitions

The terms and definitions defined in YB/T 4209 and YB/T 4773 apply to this document.

4 Thermal balance test and calculation benchmark