ガーニエライト鉱石中のニッケルの酸浸出に関する研究

浸出液としての硫酸溶液と硝酸溶液の比較

抄録

Authors reported the results about the leaching of Ni from garnierite ore by using HNO₃ solution as the leaching medium previously. In this report, at first, the experimental data of the leaching of Ni from garnierite ore by using H2 SO4 solution as the leaching medium were statistically researched. Next, the experimental data of this time, and the data of the previously reported, were arranged to the orthogonal array, and a series of experiment of using H₂SO₄ solution and HNO₃ solution as leaching medium were performed.
The effects on the extraction of Ni, Fe, MgO from the ore by the difference between H₂SO₄ solution and HNO3 solution as the leaching medium were statistically treated and compared.
The results of these comparison showed that the former heighten the extractions of Ni, Fe, MgO from the ore than the later. When the process decreasing the extractions of Fe, MgO from the ore is developed, to use H2 SO4 solution as the leaching medium may be profitable to the industrial process, because of the lower price of H₂SO₄ than HNO₃.