Method for dissolving a nickel- and cobalt-containing metallised material

摘要

The present invention pertains to the field of hydrometallurgy and essentially relates to methods for producing sulphate solutions that contain nickel and cobalt. The method involves processing the material using a solution of sulphuric acid in the presence of a catalyst so as to produce a solution and a solid residue. The catalyst consists of a copper-containing material which is previously dissolved in the sulphuric acid, while the process is carried out at a pH of 2.0 to 4.5.