鉱物処理

[12-10] ⼤気圧下でのクエン酸によってハルマヘラ島(インドネシア)からの低グレード褐鉄鉱鉱⽯のニッケル抽出

^〇Astuti Widi¹、平島 剛¹、笹木 圭子¹、沖部 奈緒子¹ (1. Kyushu University)

司会:芳賀 一寿(秋田大学)

Leaching mechanism and kinetics of nickel extraction from low-grade limonitic ore of Halmahera Island(Indonesia) using citric acid solution under atmospheric pressure were investigated. The effects of variousparameters were studied to optimize the leaching conditions and to determine the kinetic of the leaching. Theresults indicated that the increase in the leaching time, temperature, citric acid concentration, pulp density andparticle size enhanced the leaching rate of nickel.