Title:
METAL REFINING METHOD BY REDUCTION OF METAL OXIDE WITH HIGH-TEMPERATURE STEAM AND HYDROGEN GAS
Document Type and Number:
Japanese Patent JP2019151911
Kind Code:
A
Abstract:
To solve the problem associated with the conventional art in which: in a metal refining method using a melting furnace, it has been not easy to perform a melting method using steam.MEANS FOR SOLVING THE PROBLEM: Conventionally, it has been not easy to perform a reductive reaction of metal oxide only with high-temperature steam. However, into the steam at 138°C, put are a gas with an oxygen concentration of 0.2% or less and a hydrogen concentration of 0.5% or more and carbon or carbon monoxide, so that the metal oxide is reduced and can be refined as metal.
Inventors:
KUME SHOICHI
Application Number:
JP2018057148A
Publication Date:
September 12, 2019
Filing Date:
March 06, 2018
Export Citation:
Assignee:
KANGEN YOYU GIJUTSU KENKYUSHO KK
International Classes:
C22B5/12; C22B5/10