SULPHURIC ACID LEACHING OF LOW/MEDIUM GRADE Mn ORES USING A NOVEL NITROGENEOUS REDUCTANT- NH3NH2HSO4. Journal of Mining and Metallurgy, Section B: Metallurgy, [S. l.], v. 49, n. 1, p. 97, 2013. Disponível em: https://test.aseestant.ceon.rs/index.php/jmm/article/view/2357. Acesso em: 11 jun. 2026.