Double acting liberation of Ni and Co in the pre-treatment process to increase recovery of nickel from low-grade nickel laterite

Eni Febriana, Research Center for Metallurgy, National Research and Innovation Agency (BRIN), KST B. J. Habibie, Tangerang Selatan, 15314, Indonesia
Muhamad Irham Mulyadi, Department of Metallurgy Engineering, Universitas Sultan Ageng Tirtayasa, Cilegon Banten, Indonesia
Wahyu Mayangsari, Research Center for Metallurgy, National Research and Innovation Agency (BRIN), KST B. J. Habibie, Tangerang Selatan, 15314, Indonesia
Januar Irawan, Research Center for Metallurgy, National Research and Innovation Agency (BRIN), KST B. J. Habibie, Tangerang Selatan, 15314, Indonesia
Iwan Setiawan, Research Center for Metallurgy, National Research and Innovation Agency (BRIN), KST B. J. Habibie, Tangerang Selatan, 15314, Indonesia
Ahmad Maksum, Department of Mechanical Engineering Politeknik Negeri Jakarta G.A. Siwabessy street, Kampus Baru UI Depok, 16425, Indonesia
Florentinus Firdiyono, Research Center for Metallurgy, National Research and Innovation Agency (BRIN), KST B. J. Habibie, Tangerang Selatan, 15314, Indonesia
Soesaptri Oediyani, Department of Metallurgy Engineering, Universitas Sultan Ageng Tirtayasa, Cilegon Banten, Indonesia
Agus Budi Prasetyo, Research Center for Metallurgy, National Research and Innovation Agency (BRIN), KST B. J. Habibie, Tangerang Selatan, 15314, IndonesiaFollow
Johny W. Soedarsono, Prof Johny Wahyuadi Laboratory, Department of Metallurgical and Materials Engineering, Universitas Indonesia, Depok 16424, Indonesia

Author ORCID Identifier

Eni Febriana: 0000-0002-1816-9598

Muhamad Irham Mulyadi: 0009-0007-6082-8044

Wahyu Mayangsari: 0000-0002-7941-5510

Januar Irawan: 0000-0002-9687-5869

Iwan Setiawan: 0000-0002-7164-1599

Ahmad Maksum: 0000-0003-1800-9137

Florentinus Firdiyono: 0000-0003-4686-1626

Soesaptri Oediyani: 0000-0003-1059-4597

Agus Budi Prasetyo: 0000-0001-7514-4648

J W Soedarsono: 0000-0001-6051-2866

Abstract

This study highlights the effectiveness of employing double-acting liberation to release Ni and Co from the complex phases of the low-grade nickel laterite. It includes the addition of concentrated sulphuric acid and NaF as well as the heat treatment prior to roasting and leaching processes to improve the destruction of the complex phases contained. The finding describes that dehydration of iron sulfate and decomposition of the lizardite at a lower temperature, 270°C, were occurred in the pre-treatment process, followed by hematite formation in the roasting process. It subsequently accelerated Ni and Co extraction in the pregnant solution and omitted Fe as the water-insoluble hematite in the residue when the leaching process was employed. The optimum leaching percentages of nickel and cobalt are 71.3% and 98.8%, serially, and were obtained at a roasting temperature of 700°C for 30 minutes with the addition of 3 wt.% sodium fluoride. This research provides essential contributions to the optimization of decomposition process for complex phases of in the low-grade nickel laterite at a lower temperature and to upsurge leaching percentage of Ni and Co by strictly suppressing Fe dissolution.

Recommended Citation

Febriana, Eni; Mulyadi, Muhamad Irham; Mayangsari, Wahyu; Irawan, Januar; Setiawan, Iwan; Maksum, Ahmad; Firdiyono, Florentinus; Oediyani, Soesaptri; Prasetyo, Agus Budi; and Soedarsono, Johny W. (2024) "Double acting liberation of Ni and Co in the pre-treatment process to increase recovery of nickel from low-grade nickel laterite," Journal of Sustainable Mining: Vol. 23 : Iss. 3 , Article 7.
Available at: https://doi.org/10.46873/2300-3960.1422