Patent ID: 8388726

Claim:
A method for extracting copper from crude copper ore comprising: Reducing said crude copper to a size ranging from 50-200 microns; Adding to above said crude copper aluminum chloride equal in quantity to about 1/20 to ⅕ of the quantity of said crude ore; Roasting above mixture at 450-600 C for 80-100 minutes; Cooling down above mixture to room temperature; Adding above mixture to a 0.25 to 3% sulfuric acid, hydrochloric acid or nitric acid solution in a ratio of one part above mixture to five parts of said sulfuric acid, hydrochloric acid or nitric acid solution; Allowing above slurry to stand to leach for a period of 1-180 minutes; Decanting the solution above slurry; Filtering said decanted solution; and, Drying said filtered decanted solution to crystallize copper.