Desenvolvimento de um processo de lixiviação dos concentrados de manganês em sais fundidos

Abstract

Minas Gerais -31.270-901 -Belo Horizonte -MG Recebido em 3/5/96; aceito em 18/6/97 DEVELOPMENT OF A LEACHING PROCESS OF MANGANESE CONCENTRATE IN MOLTENSALTS. The NaCl-KCl system as fused-salt solvent for leaching has shown to have some advantages over traditional solvents. In this work the solubility of copper, nickel and cobalt oxide in this system, as impurities in manganese concentrate, was studied. The euthetic mixture of NaCl -KCl at 700 o C was used at several fusion times and the dissolved metals were determined by Atomic Absorption Spectrometry. The results have shown that in these conditions only copper was solubilized.