Method of pre-treating molybdenite containing copper

Abstract

Disclosed is a method of pre-treating molybdenite containing copper. The method includes mixing molybdenite containing copper with sulfuric acid, performing a sulfation reaction through a heating process after the mixing process is performed, performing a water leaching process by putting and stirring water after the sulfation reaction is performed, separating a cake from liquid after the water leaching process is performed, and drying the separated cake.

What is claimed is: 
     
         1 . A method of pre-treating molybdenite containing copper, the method comprising:
 mixing molybdenite containing copper with sulfuric acid;   performing a sulfation reaction through a heating process after the mixing process is performed;   performing a water leaching process by putting and stirring water after the sulfation reaction is performed;   separating a cake from liquid after the water leaching process is performed; and   drying the separated cake.   
     
     
         2 . The method of  claim 1 , wherein the sulfation reaction is performed at a temperature of 180° C. to 240° C. 
     
     
         3 . The method of  claim 1 , wherein the sulfation reaction is performed for time of 20 minutes to 80 minutes. 
     
     
         4 . The method of  claim 1 , wherein the sulfuric acid is mixed with the molybdenite at an equivalent ratio of 0.9 to 1.8 with respect to the molybdenite. 
     
     
         5 . The method of  claim 1 , wherein the sulfation reaction is performed at a temperature of 180° C. to 240° C. for time of 20 minutes to 80 minutes after the sulfuric acid is mixed at an equivalent ratio of 0.9 to 1.8. 
     
     
         6 . The method of  claim 1 , wherein the sulfation reaction is performed at a temperature of 210° C. to 240° C. 
     
     
         7 . The method of  claim 6 , wherein the sulfation reaction is performed for time of 40 minutes to 80 minutes. 
     
     
         8 . The method of  claim 6 , wherein the sulfuric acid is mixed with the molybdenite at an equivalent ratio of 0.9 to 1.8 with respect to the molybdenite. 
     
     
         9 . The method of  claim 1 , wherein the sulfation reaction is performed at a temperature of 210° C. to 240° C. for time of 40 minutes to 80 minutes after the sulfuric acid is mixed at an equivalent ratio of 0.9 to 1.8. 
     
     
         10 . The method of  claim 1 , wherein the water comprises at least one selected from the group consisting of distilled water, deionized water, hard water, and heavy water. 
     
     
         11 . The method of  claim 1 , further comprising performing a floatation process with respect to the molybdenite before the molybdenite is mixed with the sulfuric acid.