True flotation versus entrainment in reverse cationic flotation for the concentration of iron ore at industrial scale - Nykänen, Virginia P S; Braga, André Soares; Pinto, Thiago César de Souza; Matai, Patrícia Helena Lara dos Santos; Lima, Neymayer Pereira; Leal Filho, Laurindo de Salles; Monte, Marisa Bezerra de Mello (Mineral Processing and Extractive Metallurgy Review, 2020)