Back to results
US 4,726,895 AGranted
Process for concentration of gold and uranium magnetically
OwnerEdward Martinezinventor
Life of this patent
Estimating the term…
Abstract
A process for concentrating gold and/or uranium minerals by rendering the nonmagnetic minerals magnetic or weakly magnetic by causing a coating to form on the surfaces of the minerals. The gold and/or uranium are concentrated by use of a gravity-magnetic separator or a suitable high intensity magnetic separator.
Claims20
A process for separating gold particles from a slurry of feed material comprising gold particles and other non-magnetic materials, said process comprising the steps of:
- (1) forming a magnetic coating on the gold particles by adding to the slurry, under substantially atmospheric conditions, an additive comprising one or more chemicals that render said particles magnetic or weakly magnetic;
- and
- (2) separating and recovering said coated gold particles by subjecting the coated gold particle containing slurry to magnetic separation to thereby obtain a concentrate of gold particles.
A process for separating uranium particles from a slurry of feed material comprising uranium particles and other non-magnetic material, said process comprising the steps of
- (1) forming a magnetic coating on the uranium particles by adding to the slurry, under substantially atmospheric conditions, an additive comprising one or more chemicals that render said particles magnetic or weakly magnetic;
- and
- (2) separating and recovering said coated uranium particles by subjecting the coated uranium particle containing slurry to magnetic separation to thereby obtain a concentrate of uranium particles.
Dependencies are inferred from the claim text.