1. Inicio
  2. Atrás
Título: Investigation of the mineralogical characteristics of fine particle residues
Autores: Lastra Quintero, Rolando
Fecha: 1988
Publicador: McGill University - MCGILL
Fuente:
Tipo: Electronic Thesis or Dissertation
Tema: Engineering, Metallurgy.
Descripción: Solid residues are generated at various stages of metal production. Some of these residues still contain significant quantities of metals. In determining possible process routes for residues a detailed knowledge of the mineralogy (i.e. the minerals or phases present) is required. This thesis examines the mineralogical characteristics of four residues: copper smelter dust, jarosite residue and hot-acid-leach residue all from the metallurgical plant of Kidd Creek Mines Ltd., and low-acid-leach residue from the Canadian Electrolytic Zinc plant.
The methodology of characterization included the fractionation of the residues based on particle size, magnetic susceptibility and leachability in sulphuric acid. The fractions were analyzed by X-ray diffractometry and electron beam techniques.
A major phase in all the residues was zinc ferrite. The characterization of this phase showed that it does not have the stoichiometric composition of ZnFe$ sb2$O$ sb4$ but exhibits a variable composition of the type Zn$ sb{x}$Fe$ sb{3-x}$O$ sb4$. This variable composition corresponds to a measured variation in magnitude susceptibility of the ferrites.
Some treatment routes for these residues are examined; special emphasis was placed on the potential application of magnetic separation. The hot-acid-leach residue appeared the most amenable to magnetic separation.
Idioma: en