Method of separating rhodium from platinum and/or palladium

1. A method of separating rhodium from platinum and/or palladium comprising:

chloridizing a raw material including rhodium and at least platinum and/or palladium in chlorine atmosphere without sodium chloride and obtaining a soluble salt of platinum and/or palladium;

water-leaching chloridized material and dissolving platinum and/or palladium into a solution;

filtering the solution; and

leaving rhodium in a filtered residue of the solution.

2. The method as claimed in claim 1 further comprising:

crushing the raw material including rhodium and at least platinum and/or palladium into particles having grain diameter of 500 μm or smaller; and

mixing carbon particle with the crushed raw material.

3. The method as claimed in claim 1 , wherein the raw material is chloridized at 750 to 880 degrees C.

4. The method as claimed in claim 1 wherein the raw material includes ruthenium and iridium, further comprising:

mixing sodium chloride with the residue;

chloridizing the residue in chlorine atmosphere and obtaining a soluble salt of rhodium, ruthenium, and iridium;

water-leaching the rhodium, ruthenium, and iridium and dissolving the rhodium, ruthenium, and iridium into a solution;

filtering the solution;

adding sodium bromate to the solution and separating ruthenium from the solution by oxidizing and distilling; and

separating palladium, platinum, and iridium in order with solvent extraction method.