Molybdenum refining method

Abstract

A molybdenum refining method collects molybdenum with high purity and yield by simple means. The molybdenum refining method includes mixing and grinding a molybdenum ore or concentrate containing molybdenum sulfide, an oxidizing agent, and an alkali or alkaline earth metal salt to produce an alkali or alkaline earth metal salt of molybdic acid from molybdenum sulfide.

1 . A molybdenum refining method comprising:
 providing at least one molybdenum-containing ore selected from the group consisting of a molybdenum ore containing molybdenum sulfide and a molybdenum concentrate containing molybdenum sulfide, an oxidizing agent, and at least one metal salt selected from the group consisting of an alkali metal salt and an alkaline earth metal salt; and   mixing and grinding the at least one molybdenum-containing ore, the oxidizing agent, and the at least one metal salt to produce a metal salt of molybdic acid from molybdenum sulfide.   
     
     
         2 . A molybdenum refining method comprising:
 providing at least one molybdenum-containing ore selected from the group consisting of a molybdenum ore containing molybdenum sulfide and a molybdenum concentrate containing molybdenum sulfide, an oxidizing agent, and at least one metal salt selected from the group consisting of an alkali metal salt and an alkaline earth metal salt;   mixing and grinding the at least one molybdenum-containing ore, the oxidizing agent, and the at least one metal salt to produce a reaction product containing a metal salt of molybdic acid from molybdenum sulfide; and   extracting molybdate ions from the reaction product using an aqueous solvent to collect molybdic acid in the aqueous solvent.   
     
     
         3 . The molybdenum refining method according to  claim 1 , wherein the oxidizing agent is an oxoacid or an oxoacid salt. 
     
     
         4 . The molybdenum refining method according to  claim 3 , wherein the oxoacid is at least one selected from the group consisting of manganese dioxide, lead oxide, silver oxide, a peroxide, nitrous acid, nitric acid, manganic acid, permanganic acid, bichromic acid, chloric acid, chlorous acid, hypochiorous acid, bromic acid, and percarbonic acid. 
     
     
         5 . The molybdenum refining method according to  claim 1 , wherein the at least one molybdenum-containing ore is a molybdenum ore containing molybdenum sulfide. 
     
     
         6 . The molybdenum refining method according to  claim 1 , wherein the at least one molybdenum-containing ore is a molybdenum concentrate. 
     
     
         7 . The molybdenum refining method according to  claim 1 , wherein the at least one metal salt is an alkali metal salt. 
     
     
         8 . The molybdenum refining method according to  claim 1 , wherein the alkali metal salt is at least one selected from the group consisting of a carbonate, a bicarbonate, a halide, a sulfate, a ulfite, a nitrate, and a hydroxide. 
     
     
         9 . The molybdenum refining method according to  claim 1 , wherein the at least one metal salt is an alkaline earth metal salt. 
     
     
         10 . The molybdenum refining method according to  claim 1 , wherein the alkaline earth metal salt is at least one selected from the group consisting of a carbonate, a bicarbonate, a halide a sulfate, a sulfite, a nitrate, and a hydroxide. 
     
     
         11 . The molybdenum refining method according to  claim 2 , wherein the oxidizing agent is an oxoacid or an oxoacid salt. 
     
     
         12 . The molybdenum refining method according to  claim 11 , wherein the oxoacid is at least one selected from the group consisting of manganese dioxide, lead oxide, silver oxide, a peroxide, nitrous acid, nitric acid, manganic acid, permanganic acid, bichromic acid, chloric acid, chlorous acid, hypochlorous acid, bromic acid, and percarbonic acid. 
     
     
         13 . The molybdenum refining method according to  claim 2 , wherein the at least one molybdenum-containing ore is a molybdenum ore containing molybdenum sulfide. 
     
     
         14 . The molybdenum refining method according to  claim 2 , wherein the at least one molybdenum-containing ore is a molybdenum concentrate. 
     
     
         15 . The molybdenum refining method according to  claim 2 , wherein the at least one metal salt is an alkali metal salt. 
     
     
         16 . The molybdenum refining method according to  claim 2 , wherein the alkali metal salt is at least one selected from the group consisting of a carbonate, a bicarbonate, a halide, a sulfate, a sulfite, a nitrate, and a hydroxide. 
     
     
         17 . The molybdenum refining method according to  claim 2 , wherein the at least one metal salt is an alkaline earth metal salt. 
     
     
         18 . The molybdenum refining method according to  claim 2 , wherein the alkaline earth metal salt is at least one selected from the group consisting of a carbonate, a bicarbonate, a halide, a sulfate, a ulfite, a nitrate, and a hydroxide.