An Energy Efficient Advanced Comminution Process to Treat Low-Grade Ferrochrome Slag Using High-Pressure Grinding Rolls

Talasetti Santosh, Chinthapudi Eswaraiah, Shivakumar Irappa Angadi, Sunil Kumar Tripathy (), Rahul Kumar Soni and Danda Srinivas Rao
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Talasetti Santosh: Department of Fuel, Minerals and Metallurgical Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad 826004, India
Chinthapudi Eswaraiah: CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, India
Shivakumar Irappa Angadi: CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, India
Sunil Kumar Tripathy: Research and Development Division, Tata Steel Ltd., Jamshedpur 831001, India
Rahul Kumar Soni: CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, India
Danda Srinivas Rao: CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, India

Energies, 2023, vol. 16, issue 7, 1-15

Abstract: The present research aims to analyze the comminution behavior of ferrochrome slag using high-pressure grinding rolls. The laboratory bench scale high-pressure grinding rolls were used to study the three significant variables on the grinding efficiency of ferrochrome slag. The Central Composite Design was used to study the process variables, such as roll gap, applied load, and roller speed. The grinding efficiency was evaluated based on the product size and the energy consumption. The results showed that the increased gap between the rolls and roller speed decreases the product size with increased energy consumption. The results also found that an increase in applied load decreases the product fineness with increased energy consumption. The models were developed for the responses of P 80 (size of 80% mass finer) and Ecs (specific energy consumption). Both the responses show high regression coefficients, thus ensuring adequate models with the experimental data. The minimum values of the P 80 size and specific energy were determined using quadratic programming. The optimum values of the roll gap applied load and roll speed were found to be 1.43 mm, 16 kN, and 800 Rpm, respectively. The minimum values of P 80 and the specific energy consumption were found to be 1264 µm and 0.56 kWh/t, respectively.

Keywords: HPGR; comminution; ferrochrome slag; characterization; energy consumption; product size; modeling (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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