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Article

Study on Grinding Optimization of Cassiterite Polymetallic Sulfide Ore Based on Single-Factor Test Method

1
Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured Materials, Guangxi Higher School Key Laboratory of Minerals Engineering and Materials, College of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
2
College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
3
School of Chemical and Biological Engineering, Hechi University, Hechi 546300, China
*
Author to whom correspondence should be addressed.
Minerals 2025, 15(8), 827; https://doi.org/10.3390/min15080827 (registering DOI)
Submission received: 6 July 2025 / Revised: 31 July 2025 / Accepted: 31 July 2025 / Published: 3 August 2025

Abstract

Cassiterite polymetallic sulfide ore exhibits a complex mineral composition and significant variations in mineral properties, which frequently lead to issues such as the over-grinding of cassiterite and under-grinding of sulfide minerals during the grinding process. These issues consequently impair liberation performance in subsequent beneficiation stages. Among these factors, the grinding media ratios stand as one of the critical factors influencing grinding efficiency. Based on these, the paper adopts the single-factor test method to systematically study the influence law of factors such as grinding time, mill rotational rate, and mill filling rate on the particle size composition of ore grinding products and the grinding technology efficiency under different media conditions; in addition, it is compared with the influence law of different conditions of media ratios on the grinding efficiency of ore. The results show that the optimal parameters of the grinding operation are obtained at the grinding time of 4 min, the mill rotational rate of 60%, and the filling rate of 35%. The grinding time and mill filling rate have a relatively more significant effect on the product particle size distribution, while the effect of the mill rotational rate is relatively less significant. When the parameters of grinding operations are optimal, the yield of qualified particle size and grinding technical efficiency are used as the evaluation indices, respectively. Overall, the order of the grinding effect of different media conditions was as follows: steel ball combination of Φ20 mm and Φ25 mm > steel balls of three single sizes > steel ball combination of Φ20 mm and Φ30 mm. The optimal grinding media ratios are Φ20 mm and Φ25 mm (the percentage of the Φ20 mm ball is 90%). The reasonable media ratios will effectively coordinate the optimal grinding effect between different media. The research results can provide the necessary basic data for the subsequent grinding optimization of cassiterite polymetallic sulfide ores.
Keywords: cassiterite polymetallic sulfide ore; single-factor test method; grinding technical efficiency; over-grinding and under-grinding cassiterite polymetallic sulfide ore; single-factor test method; grinding technical efficiency; over-grinding and under-grinding

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MDPI and ACS Style

Yang, J.; Zhu, P.; Deng, X.; Li, H.; Ma, S.; Wang, D. Study on Grinding Optimization of Cassiterite Polymetallic Sulfide Ore Based on Single-Factor Test Method. Minerals 2025, 15, 827. https://doi.org/10.3390/min15080827

AMA Style

Yang J, Zhu P, Deng X, Li H, Ma S, Wang D. Study on Grinding Optimization of Cassiterite Polymetallic Sulfide Ore Based on Single-Factor Test Method. Minerals. 2025; 15(8):827. https://doi.org/10.3390/min15080827

Chicago/Turabian Style

Yang, Jinlin, Pengyan Zhu, Xingjian Deng, Hengjun Li, Shaojian Ma, and Dingzheng Wang. 2025. "Study on Grinding Optimization of Cassiterite Polymetallic Sulfide Ore Based on Single-Factor Test Method" Minerals 15, no. 8: 827. https://doi.org/10.3390/min15080827

APA Style

Yang, J., Zhu, P., Deng, X., Li, H., Ma, S., & Wang, D. (2025). Study on Grinding Optimization of Cassiterite Polymetallic Sulfide Ore Based on Single-Factor Test Method. Minerals, 15(8), 827. https://doi.org/10.3390/min15080827

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