Back to results
US 4,301,973 AGranted
Beneficiation of iron ore
AssigneeKennecott Corporation
InventorRalph W. M. Lai
Life of this patent
Estimating the term…
Abstract
Isostearic acid, a liquid isomer of stearic acid, is used as an agent in a froth flotation process to concentrate the iron oxide in iron ores. By use of this flotation agent, the iron oxide in the ground ore is directly floated away from the remainder of the ore. The process enables a high amount of iron oxide to be concentrated from low grade ores.
Claims12
A process for concentrating iron oxide from an iron oxide containing ore comprising:
- a. grinding the ore;
- b. introducing the ground ore into a flotation cell in the form of pulp;
- c. introducing a flotation agent into said pulp and maintaining the pH of the pulp alkaline, said flotation agent comprising an isostearic acid which is liquid at room temperature;
- d. introducing air into the flotation cell to cause the iron oxide component of the ore to float away from remaining portions of the ore;
- and
- e. collecting the iron oxide component from the top of the cell.
3 more elements
Dependencies are inferred from the claim text.