Process for beneficiating oxide ores
AssigneeHazen Research, Inc.
InventorsJames K. Kindig, Ronald L. Turner
Life of this patent
Estimating the term…
Abstract
One or more mineral values of metal oxide ores selected from the group consisting of bauxite, taconite, apatite, titanium oxides and the metal oxides of Groups, IIIB, IVB, VB VIB, VIIB, VIIIB, IB, IIB and IVA are beneficiated by treating the ore with a metal containing compound under conditions such as to selectively enhance the magnetic susceptibility of the mineral values to the exclusion of the gangue in order to permit a physical separation between the values and gague.
Claims60
A process for beneficiating metal oxide ores selected from the group consisting of bauxite, apatite, and the metal oxides of Groups IIIB, IVB, VB, VIB, VIIB, VIIIB, IB, IIB and IVA which comprises contacting the metal oxide ore with a metal containing compound under conditions which cause the metal containing compound to react substantially at the surface of the metal oxide particles to the substantial exclusion of the gangue particles so as to alter the surface characteristics of the metal values thereby causing a selective enhancement of the magnetic susceptibility of the metal oxide values to the exclusion of the gangue in order to permit a physical separation between the values and the gangue.
A process for beneficiating metal oxide ores selected from the group consisting of bauxite, apatite, and the metal oxides of Groups IIIB, IVB, VB, VIB, VIIB, VIIIB, IB, IIB, and IVA which comprises contacting the metal oxide ore in a specific system with from about 0.1 to about 100 kilograms of a metal containing compound at a temperature within a range of 125.degree. C. less than the general decomposition temperature of the metal containing compound in a specific system for the ore being treated for a period of time from about 0.05 to about 4 hours under conditions which cause the metal containing compound to react substantially at the surface of the metal oxide particles to the substantial exclusion of the gangue particles so as to alter the surface characteristics of the metal values thereby causing a selective enhancement of the magnetic susceptibility of the metal oxide values to the exclusion of the gangue in order to permit a physical separation between the values and the gangue.
A process for beneficiating metal oxide ores selected from the group consisting of taconite, bauxite, apatite, rutile, pyrochlore, uraninite, cuprite, cassiterite, carnotite, scheelite and hematite which comprises contacting the metal oxide ore in a specific system with from about 2 to about 20 kilograms of an iron containing compound per metric ton of ore at a temperature within a range of 125.degree. C. less than the general decomposition temperature of the iron containing compound in the specific system for the ore being treated for a time period from about 0.15 to 2 hours under conditions which cause the iron containing compound to react substantially at the surface of the metal oxide particles to the substantial exclusion of the gangue particles so as to alter the surface characteristics of the metal values thereby causing a selective enhancement of the magnetic susceptibility of the metal oxide values to the exclusion of the gangue in order to permit a magnetic separation between the values and the gangue.
Dependencies are inferred from the claim text.