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| Application of the Roller Press Final Grinding System in the Production of Blast Furnace Slag and Steelmaking Slag Micropowder |
1. Tianjin Cement Industry Design & Research Institute Co., Ltd. 2. Baoding Taihang Heyi Cement Co., Ltd.
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Abstract This paper summarizes several kinds of popular production technology of blast furnace slag and steelmaking slag micropowder, and introduces the final grinding system of roller press (RP), which developed by Tianjin Cement Industry Design & Research Institute Co., Ltd. and used for 300kt/a slag micropowder project of Bangxin Building Materials Co.,Ltd. and 600kt/a slag micropowder project of Zhongtai Building Materials Co., Ltd. The output of Bangxin project is 50~55t/h (dry basis) and power consumption of the system is less than 35kWh /t. The output of Zhongtai project is 86.6t/h (dry basis) and power consumption of the system is 34.69kWh/t. Compared with the vertical roller mill, the final grinding system of RP is more efficient in grinding blast furnace slag and steelmaking slag, and the power consumption is lower. In addition, the metal iron can be removed in time of production, reducing the wear of the roller surface, the repair cost of the RP is about one-half lower than vertical roller mill.
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Received: 01 April 2019
Published: 26 November 2019
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