THE STAGE SELECTIVE ROASTING, AN EFFICIENT WAY FOR THE TREATMENT OF ARSENICAL AND ANTIMONICAL BEARING CONCENTRATES AND OTHER COMPLEX METALLURGICAL BY-PRODUCTS

摘要

This paper reviews the experience gained by CMI NESA over the last thirty years for the treatment of arsenical and antimonical bearing concentrates and other complex metallurgical byproducts. The importance of preliminary mineralogical characterization is emphasized as a preliminary step for the success of the roasting. Stage selective roasting appears as an attractive and efficient route for the treatment of complex concentrates. Numerous examples will be given for confirmation of such thermal treatment.