Studying the effect of different operation parameters on the grinding energy efficiency in laboratory stirred mill

Akkaya, Barış; Toroğlu, İhsan; Bilen, Mehmet

doi:10.1016/j.apt.2020.09.026

Cited by 12 publications

(4 citation statements)

References 27 publications

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“…Thus, larger GM, which present a higher stress intensity, are better for the breaking of large particles, while smaller GM are more suitable for the smaller particles. 25 In our study, the ilmenite particles were suitable for the small GM.…”

Section: Resultsmentioning

confidence: 67%

Development of a Safe and Environmentally Friendly Sulfate Process for the Production of Titanium Oxide

Sadeghi

Esfahany

2022

Ind. Eng. Chem. Res.

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The current research was aimed at developing a safe and more environmentally friendly sulfate process for the production of titanium oxide. In this process, to leach titanium from ilmenite by relatively dilute sulfuric acid (50 wt %), a two-step leaching scheme using a series of stirred tank reactor (STR) and vertical stirred media reactors (SMRs) was devised for carrying out the chemical reaction and particle activation, respectively. The proposed modified sulfate process (MSP) efficiency was 76.5%. The amount of sulfuric acid discarded (100 wt %) from the hydrolysis step per ton of TiO2 was about 100 kg, while this is about 1000 kg in the conventional sulfate process. About 600 kg of quick lime per ton of TiO2 is also saved in the waste acid neutralization section, which ultimately reduces the production of scrap gypsum by about 1700 kg/ton TiO2. The cost balance indicated that processing by the MSP brings about 185 US $/ton TiO2 profit.

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Section: Resultsmentioning

confidence: 67%

Development of a Safe and Environmentally Friendly Sulfate Process for the Production of Titanium Oxide

Sadeghi

Esfahany

2022

Ind. Eng. Chem. Res.

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“…It also clearly shows that for the current experimental samples to be ground, based on the +0.3 mm residual of 25%, the energy consumption for steel ball milling is 11.661 kWh/t, for ceramic ball milling is 7.535 kWh/t, and for binary media milling is 9.003 kWh/h. Ceramic ball milling consumes 64.62% of the energy consumed by steel ball milling, and the energy consumption for binary media milling is 77.21% of the energy consumed by steel ball milling [38,39]. Figure 8 demonstrates the relationship between the newly generated −0.075 mm yield of the three ground products and the grinding energy consumption.…”

Section: Energy Consumption Distributionmentioning

confidence: 99%

Enhancing the Grinding Efficiency of a Magnetite Second-Stage Mill through Ceramic Ball Optimization: From Laboratory to Industrial Applications

Wu,

Chen,

Liao

et al. 2024

Minerals

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Ceramic ball milling has demonstrated remarkable energy-saving efficiency in industrial applications. However, there is a pressing need to enhance the grinding efficiency for coarse particles. This paper introduces a novel method of combining media primarily using ceramic balls supplemented with an appropriate proportion of steel balls. Three grinding media approaches, including the utilization of steel balls, ceramic balls, and a hybrid combination, were investigated. Through an analysis of the grinding kinetics and the R–R particle size characteristic formulas, the study compares the breakage rate and particle size distribution changes for the three setups. The results indicate that employing binary media effectively improves the grinding efficiency for +0.3 mm coarse particles while maintaining the energy-saving advantages of ceramic ball milling. Simultaneously, the uniformity of the ground product is ensured. This proposed approach has been successfully validated in industrial applications, providing robust theoretical support for the expansion of ceramic ball milling applications.

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“…Therefore, it is necessary to run the VSM with good performance and low energy. The VSM performance is affected by many factors like the structures, material properties, and operating parameters, which together influence the flows and interactions between the media balls and the materials [17][18][19][20]. This topic received numerous investigations via multiple research methods.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Optimization of the Milling Performance of an Industry-Scale VSM via Numerical Simulations

Tong

Chen

Liu³

et al. 2023

Materials

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Vertical stirred mills (VSM) are widely used for powder processing in many situations like mechanical alloying preparation and raw material crushing and shaping. Many structural and operational parameters like stirrer helix angle and rotating speed have great significance on VSM performance, especially in a large industry-scale situation. Therefore, it becomes essential to investigate these parameters systematically to obtain high energy efficiency and good product quality. In this work, the discrete element method (DEM) was used to examine the effects of stirrer helix angle (α), stirrer diameter (d), and rotating speed (n) on the grinding performance in an industrial VSM, and then the response surface method (RSM) was employed for multi-objective optimization in the VSM. It is found that a media vortex phenomenon may happen near the stirring shaft. The media collisions are significantly influenced by α, d, and n. Through multi-objective optimization design (MOD), the power consumption (P) of the stirrer reduced by 8.09%. The media collision energy (E) increased by 9.53%. The energy conversion rate (R) rises by 20.70%. The collision intensity and frequency are both improved. This optimization method can help determine good operating parameters based on certain structures.

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Studying the effect of different operation parameters on the grinding energy efficiency in laboratory stirred mill

Cited by 12 publications

References 27 publications

Development of a Safe and Environmentally Friendly Sulfate Process for the Production of Titanium Oxide

Development of a Safe and Environmentally Friendly Sulfate Process for the Production of Titanium Oxide

Enhancing the Grinding Efficiency of a Magnetite Second-Stage Mill through Ceramic Ball Optimization: From Laboratory to Industrial Applications

Analysis and Optimization of the Milling Performance of an Industry-Scale VSM via Numerical Simulations

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