Subagja R, Prasetyo AB, Sari WM. Peningkatan Kadar Nikel Dalam Laterit Jenis Limonit Dengan Cara Peletasi, Pemanggangan Reduksi Dan Pemisahan Magnet Campuran Bijih, Batu Bara, Dan Na2SO4 [Upgrading of Nickel Content in The Limonitic Laterite Ores by Pelletizing, Reduction Roasting and Magnetic Separation of The Mixed Ores, Coal and Sodium Sulphate]. Metalurgi [Internet]. 2016 Aug. 1 [cited 2026 Mar. 17];31(2):103-15. Available from: https://ejournal.brin.go.id/metalurgi/article/view/6979