Briquetting Pressure Roles in Selective Reduction Process of Limonitic Nickel Laterite

Abstract:

Direct reduction is one of the methods used in nickel extraction from limonitic nickel laterite. Briquettes become an essential part of the direct reduction. This research examines the appropriate com-paction pressure of briquettes to achieve the optimum concentration, recovery of Ni and Fe, and selectivity factors also analyze the com-pounds formed. The briquettes were made at a pressure of 20 Kgf/cm², 30 Kgf/cm², 40 Kgf/cm², and 50 Kgf/cm². This study was performed out by mixing the prepared materials and then compact-ing them to form briquettes. Then, it was put into a crucible, and the coal-limestone bed mixture is added and put into the muffle fur-nace. Then, the direct reduction was started by heating at 700°C for 2 hours and continued at 1400°C for 6 hours. Next, it was continued with magnetic separation and weighing of the reduction products. The products were tested with SEM-EDX to determine the content. The products were tested with XRD to determine the compounds formed. The optimal results were obtained at variations of 30 Kgf/cm² with a Ni content of 5.00% and Recovery of 86.76%.

• Periodical: Key Engineering Materials (Volume 939)
• Pages: 3-9
• DOI: https://doi.org/10.4028/p-rv871t
• Online since: January 2023
• Authors: Fakhreza Abdul*, Frederick Geovan Liris Limbong Rare, Yuli Setiyorini, Vuri Ayu Setyowati, Sungging Pintowantoro
• Keywords: Briquette, Direct Reduction, Laterite Nickel, Sustain Natural Resources

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