Effect of Sulfur Addition to Nickel Recovery of Laterite Ore
| Autor: | Ariyo Suharyanto, Agus Budi Prasetyo, Iwan Setiawan, Eni Febriana, Wahyu Mayangsari, Muhammad Ikhwanul Hakim, Andinnie Juniarsih, Januar Irawan, Rudi Subagja, Tiffany Ary Prakasa |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Reducing agent
0211 other engineering and technologies Magnetic separation chemistry.chemical_element reduction 02 engineering and technology engineering.material 020401 chemical engineering nickel ore Laterite Graphite 0204 chemical engineering QD1-999 021102 mining & metallurgy Limonite Extraction (chemistry) Sulfur Nickel Chemistry chemistry visual_art sulfur engineering visual_art.visual_art_medium additives limonite Nuclear chemistry |
| Zdroj: | Jurnal Kimia Sains dan Aplikasi, Vol 23, Iss 1, Pp 14-20 (2020) |
| ISSN: | 2597-9914 1410-8917 |
| Popis: | This research studied the effect of the addition of sulfur on the reduction process of limonite nickel laterite ore with Ni content of 1.11wt% and Fe 48.7wt%. The stages of the research included the characterization of ore materials, preparation, mixing, pelleting, reduction, and magnetic separation. The reduction stage was carried out with several experimental variables, which were the time and temperature of the reduction, as well as the addition of reducing agents and sulfur additives. Products from the reduction process were separated magnetically, and the concentrate was then analyzed using XRD and AAS. The results showed that the addition of sulfur additives to a certain amount could cause the formation of FeS and Fe-silicate, which could increase the content and percentage of nickel recovery by suppressing the metallization of iron. The optimum conditions were obtained in the reduction process with a temperature of 1100°C for 60 minutes, with the addition of graphite reductant and sulfur additives each of 7% of the sample weight. Ni contents in the reduction product concentrate obtained were 1.98% with 96% gain, while Fe could be reduced to 29.2% with an extraction percentage of 76.1%. |
| Databáze: | OpenAIRE |
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