Study of the Effect of Time Variations on the Leaching Process of Ferronickel Products from Mini Blast Furnace to Yield Elements of Fe, Ni, and Co for NiSO4.6H2O Synthesis

S Pintowantoro,Va Setyowati,Fp Waluyo,A Kawigraha,F Abdul,Y Setiyorini

doi:10.1088/1742-6596/2117/1/012024

S Pintowantoro, Va Setyowati + Show 4 more

Open Access

https://doi.org/10.1088/1742-6596/2117/1/012024

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Abstract

Indonesia, as one of the biggest contributor to air pollution, has a solution to replace petroleum-powered motorized vehicles with battery-powered electric vehicles (EVs). Indonesia has nickel reserves that can be used as one of the cathodes of a Li-ion battery called NMC. In this research, the author uses ferronickel ore from the smelting process of laterite nickel ore. Then ferronickel is leached to produce nickel sulfate. This research was conducted to determine the effect of variations in leaching time (2 hours, 4 hours, 6 hours, 8 hours, 10 hours) on the extraction rate, extraction percentage, chemical composition, yield, and the resulting compounds. The results of this study were that the highest content of nickel extract was produced in a 10-hour variation of 11530 mg/L with an extraction percentage of 94.16%, the most iron in a 10-hour variation of 4128 mg/L with 100% extraction percentage, and the most cobalt in a 2-hour variation. as much as 47.3 mg/L with 100% extraction percentage. The highest nickel yield was produced at a 10-hour concentration variation of 87.37%. The compounds produced from the crystallization products were NiSO4.6H2O, Na2SO4, CoSO4, and FeSO4.

Highlights

In recent decades, the number of electric vehicles (EVs) has continued to increase
The ferronickel powder is tested on Energy-Dispersive X-ray Spectroscopy (EDX) and Atomic Absorption Spectroscopy (AAS) to determine the chemical composition contained in ferronickel
3.1 Ferronickel Sample Characterization The ferronickel powder which has been in powder form is tested for EDX and AAS, EDX testing to determine the initial content of the element before going through the leaching process

Summary

Introduction

The number of electric vehicles (EVs) has continued to increase. Is estimated that worldwide, there will be more than 125 million EVs to be launched by 2030. Li-ion batteries are divided into six based on their cathode constituents, including Lithium Cobalt Oxide (LCO), Lithium Manganese Oxide (LMO), Lithium Iron Phosphate (LFP), Lithium Nickel Cobalt Aluminum Oxide (NCA), Lithium Nickel Manganese Cobalt Oxide (NMC), and Lithium Titanate (LTO) [3]. Of these types of batteries, the NMC battery is a battery with the most superior properties for EV use, because it has a high energy density of up to 0.6 kWh / kg and has a moderate life cycle (2000-3000 times) [4].

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