“Hydrometallurgical Methods for Separating Some Valuable Metals of the Titanium Concentrate Obtained from Gattar Area Solid Residue”

Abstract

1- The successful and simple physical upgrading of the solid waste tailings resulted from the Gattar mineralized ore material to produce a Ti-concentrate (79% TiO2) consisted mainly of rutile mineral. The upgrading process comprised the use of the Shaking Tables (using water streams) and Heavy Liquid Separation (using bromoform). 2- The prepared Ti-concentrate was used as a feedstock for the preparation of industrial- grade products of Ti, and by-products of vanadium, silica and alumina through successive pyro, hydro and electro-metallurgical processes. 3- In the pyro-metallurgical process: the Ti-concentrate was roasted using the flux of (NaOH/Na2CO3, 3/1) in the presence of air in order to: (a) destroy the compact natural rutile crystals that are amenable for direct leaching, (b) selectively dissolve V, Si and Al from the Ti concentrate using hot water leaching where these elements are harmful to the Ti products, and (c) to facilitate the leaching of the water leach residue that containing titanium, iron, manganese, calcium and zirconium using sulfuric acid leaching. The optimal conditions for the roasting step were: 550°C roasting temperature, 40 min