A Survey and Analysis on Electricity Consumption of Raw Material Mill System in China Cement Industry between 2014 and 2019

Ruonan Meng, Qinglin Zhao, Miaomiao Wu, Quanming Long and Mingkai Zhou
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Ruonan Meng: State Key Laboratory of Silicate Materials for Architecture, Wuhan University of Technology, Wuhan 430070, China
Qinglin Zhao: State Key Laboratory of Silicate Materials for Architecture, Wuhan University of Technology, Wuhan 430070, China
Miaomiao Wu: State Key Laboratory of Silicate Materials for Architecture, Wuhan University of Technology, Wuhan 430070, China
Quanming Long: State Key Laboratory of Silicate Materials for Architecture, Wuhan University of Technology, Wuhan 430070, China
Mingkai Zhou: State Key Laboratory of Silicate Materials for Architecture, Wuhan University of Technology, Wuhan 430070, China

Sustainability, 2021, vol. 13, issue 3, 1-11

Abstract: In the whole process of cement production, the electricity consumption of a raw material mill accounts for about 24% of the total. Based on the statistics of the electricity consumption of the raw material mill system of 1005 production lines in China between 2014 and 2019, it is found that the average electricity consumption of the raw material preparation process of all clinker production lines between 2014 and 2019 was 25.2 kWh/t. The average electricity consumption of different-tonnage production lines varies with time. In comparison with high-tonnage ones, the electricity consumption of low-tonnage production lines has wider distribution. The average electricity consumption of raw material mill dropped from 30.88 kWh/t in 2014 to 16.13 kWh/t in 2019, with a drop of more than half. At present, the raw material preparation process of new drying-process cement production enterprises mainly includes middle unloading drying tube mill raw material preparation system, vertical mill raw material final grinding system, and roller press raw material final grinding system. This paper compares the characteristics of several grinding systems and summarizes their influence on the electricity consumption.

Keywords: raw material mill; electricity consumption; middle unloading drying tube mill; vertical mill; roller press (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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