Analysis of the Influence of Temperature and Ratio on Extraction Percentage in the Leaching Process of Low-Grade Nickel in Pomalaa, Southeast Sulawesi
Nickel Laterite Ore Extraction
DOI:
https://doi.org/10.36761/hexagon.v5i1.3213Keywords:
Keywords: Lateritic Nickel; Nickel Extraction; Temperature; Solid-Liquid Ratio.Abstract
Currently, nickel is widely used in various industries because it offers numerous benefits, particularly in the metal and battery industries, among others. With the increasing applications and advantages of nickel, it is necessary to separate nickel from its source. The aim of this study is to investigate and analyze the influence of temperature and ratio on the recovery of lateritic nickel ore in Pomalaa, Southeast Sulawesi, during the leaching process of nickel metal using sulfuric acid. Based on XRF analysis, the rock samples have a high nickel content of approximately 5.67%. This result is similar to the total nickel testing using aqua regia as a solvent, which yielded around 6.5429%. Under the conditions of leaching nickel-bearing rock with a solid-liquid ratio of 1:20 and a temperature of 90°C, the highest percentage of nickel extraction achieved is approximately 66.76%. Conversely, a low percentage of nickel extraction is obtained at room temperature with a solid-liquid ratio of 1:10, approximately 8.65%. Based on these results, temperature and solid-liquid ratio in the leaching process significantly influence the percentage of nickel extraction.
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