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GB/T 45689-2025Slag vertical roller mill — Energy consumption index (English PDF)

矿渣水泥立磨能耗指标

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

May 30, 2025

Implementation date

December 1, 2025

Scope

GB/T 45689-2025 is the English-translated version of 矿渣水泥立磨能耗指标.

GB/T 45689-2025 is the Chinese national standard covering the electricity a vertical mill uses to grind blast furnace slag into cement addition — the energy consumption index in kilowatt-hours per tonne, the standard operating regime of feed grindability, moisture and size and of product fineness without which two mills cannot be compared, the quality the ground slag has to reach, the test method, the assessment, and the energy consumption grade label. First edition, under the China Machinery Industry Federation. In force from 1 December 2025. Issued on 30 May 2025, it has been in force since 1 December 2025.

Document preview — GB/T 45689-2025

National Standard of the People's Republic of China

ICS: 73.120
Classification: D 94

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

PrefaceIII
1 Scope1
2 Normative references1
3 Terms and Definitions1
4 Technical Requirements1
5 Test methods2
6 Energy consumption assessment2
7 Energy consumption level label2
Appendix A (Informative) Test method for energy consumption of slag cement vertical mill3
Reference4

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 is required.

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 Machinery Industry Federation.

This document is under the jurisdiction of the National Technical Committee for Standardization of Mining Machinery (SAC/TC 88).

This document was drafted by: Luoyang Mining Machinery Engineering Design and Research Institute Co., Ltd., Shanxi Energy College, CITIC Heavy Industries Machinery Co., Ltd.

Co., Ltd., Shenyang Jianzhu University.

The main drafters of this document are: Zhang Zhiyong, Wang Jun, Zhang Ziying, Jiang Jun, Tao Wenjia, Qu Dongting, He Enguang, Wang Lihui, Wu Xiaoqiang, Xia Ying, Bai Xiaotian.

Energy consumption index of slag cement vertical mill

1 Scope

This document specifies the technical requirements, test methods, energy consumption assessment and energy consumption grade marking for slag cement vertical mill energy consumption indicators.

This document is applicable to the production of granulated blast furnace slag powder for cement, mortar and concrete.

Slag cement vertical mill (hereinafter referred to as vertical mill).

2 Normative references

GB/T 203

GB/T 7679.5

GB/T 8170

GB/T 18046-2017

3 Terms and definitions

The terms and definitions defined in GB/T 7679.5 and the following apply to this document.

3.1 Normal regime

The grindability index (Bond method) of the material to be ground is not more than 22 kW-h/t, the moisture content of the material entering the mill is not more than 18%, and the particle size of the material entering is not large.

The particle size of the product is less than 10 mm, the specific surface area of the product is not less than 4.200 cm2/g (Blaine method), and the residual moisture of the product is not more than 1% (mass fraction).

Note. The grindability index test as specified in GB/T 26567 stipulates that the mesh size of the finished sieve is 80 µm.

3.2 Energy consumption index

The ratio of the vertical mill's measured average power to its processing capacity under specified standard operating conditions.

Note. The unit is kilowatt-hour per ton (kW-h/t).

3.3 evaluating value of energy conservation

Under the test conditions specified in this document, the energy consumption index values required for energy-saving products are achieved.

4 Technical requirements

4.1 The design, manufacture and quality of vertical mill shall comply with the provisions of JB/T 10997.

4.2 Grinding material The quality of granulated blast furnace slag shall comply with the requirements of GB/T 203.

4.3 The quality of the produced granulated blast furnace slag powder shall not be lower than the S95 grade specified in GB/T 18046-2017.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

Editions of GB/T 45689

Edition	Title	Revision	Status
GB/T 45689-2025	Slag vertical roller mill - Energy consumption index	current edition	Current

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