Study effect of carbon type of nickel extraction in thermal upgrading-selective reduction

Fathan Bahfie, Azwar Manaf, Widi Astuti, Fajar Nurjaman, Erik Prasetyo

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Selective reduction can be applied with thermal upgrading that is the process for nickel extraction with holding temperature in the range 1150°C. The effect and type of reductor are the main factor during the selective reduction process which could control the percentage and grain size of nickel. With those factors, this research will be finding the variation of reductor type. The first step is saprolite and reductor characterization. The percentages of Ni, Fe, Mg, Al, and Si in saprolite are given in 1.82, 30.47, 10-20, 4.86, and 8.1 weight percent. Saprolite has 53.1 percent iron oxide/oxyhydroxide, 38.3 percent lizardite, and 8.7 percent silicate. For reductor, those are graphite, palm kernel shell, and anthracite with carbon percentage 98, 77, and 68. From XRF, the optimum nickel grade is in the graphite and anthracite with 6.5 and 7 wt.%. For phases, the ferronickel is appearing in the high intensity for the optimum reductor type and the microstructure is around 5-10 um for both. Moreover, the optimum reductor type are graphite and anthracite.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
EditorsSigit Dwi Yudanto, Ari Yustisia Akbar, Fendy Rokhmanto, Made Subekti Dwijaya, Muhammad Yunan Hasbi, Wahyu Mayangsari, Yudi Nugraha Thaha
PublisherAmerican Institute of Physics
Edition1
ISBN (Electronic)9780735448124
DOIs
Publication statusPublished - 28 Feb 2024
Event5th International Seminar on Metallurgy and Materials, ISMM 2022 - Tangerang Selatan, Indonesia
Duration: 22 Nov 202223 Nov 2022

Publication series

NameAIP Conference Proceedings
Number1
Volume3003
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference5th International Seminar on Metallurgy and Materials, ISMM 2022
Country/TerritoryIndonesia
CityTangerang Selatan
Period22/11/2223/11/22

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