Method and apparatus for high temperature production of metals
OwnerJohn Joseph Barsainventor
Life of this patent
Estimating the term…
Loading patent…
OwnerJohn Joseph Barsainventor
Estimating the term…
Carbothermic reduction of magnesium oxide at approximately 2200 degrees Kelvin yields a high temperature mixture of magnesium vapors and carbon monoxide gas. Previous processes have sought to cool or alter the mixture to cause the yield of pure magnesium, which is then used in subsequent processes for its reducing properties. The present invention takes advantage of the stability and inertness of carbon monoxide at elevated temperatures enabling the magnesium vapor/carbon monoxide gas mixture from the carbothermic process to be used directly for the production of other metals at high temperatures. Chromium oxide, manganese oxide, zinc oxide and sulfide, and several other metal compounds can be reduced by the magnesium vapor/carbon monoxide gas mixture at temperatures high enough to prevent the gas mixture from back-reacting to magnesium oxide and carbon.
A method for reduction of metal oxides, hydroxides, sulfides or polyatomic compounds thereof including the steps of:
A method for production of metals from metal oxides using a carbothermically produced mixture of magnesium vapor and carbon monoxide gas to reduce said metal oxides after passing said mixture of magnesium vapor and carbon monoxide gas through a filter, including the steps of maintaining said metal oxides, and said mixture of magnesium vapor and carbon monoxide gas and said filter at carbothermic temperatures in the range of 1800°-2600° Kelvin during reduction of said metal oxides, producing pure metal, magnesium oxide and carbon monoxide, separating said metal and said magnesium oxide and recycling said magnesium oxide to carbothermic production of magnesium vapor and carbon monoxide gas, whereby back reaction of magnesium vapor and carbon monoxide gas to magnesium oxide and carbon before reduction of said metal oxides is prevented.
A method for production of metals from metal oxides, sulfides or polyatomic compounds including the steps of,
Dependencies are inferred from the claim text.