SURIYANTO BAKRI; MUBDIANA ARIFIN; ALDI SURYADI; ARIF NURWASKITO; FIRDAUS. Effect of Drum Rotation Speed on Magnetic Separation Efficiency for Iron Grade Improvement of Galesong Beach Iron Sand Takalar Regency. Cognitia : International Engineering Journal, [S. l.], v. 1, n. 2, p. 77–83, 2025. DOI: 10.63288/ciej.v1i2.9. Disponível em: https://ejournal.candela.id/index.php/ciej/article/view/65. Acesso em: 1 nov. 2025.