MUMBAI, India, July 7 -- Intellectual Property India has published a patent application (202617070028 A) filed by Nippon Steel Corporation on June 04, 2026, for Reduced Iron Production Method And Reduced Iron Production Device.
Inventors include Mizutani Moritoshi; and Tomita Katsuyuki.
The application for the patent was published on July 03, 2026, under issue no. 27/2026.
Abstract: This reduced iron production method comprises: an iron oxide charging step for charging a shaft furnace with an iron oxide raw material; a partial combustion step for partially combusting a raw material gas with oxygen gas to raise the temperature of the raw material gas to 800°C or higher, and generating a reducing gas; and a blowing step for blowing the reducing gas into the shaft furnace. In the blowing step, when the temperature of the reducing gas after the partial combustion step is not lower than 800°C but lower than 900°C, the water vapor concentration of the reducing gas is set to 21 vol% or less. When the temperature of the reducing gas after the partial combustion step is not lower than 900°C but lower than 1000°C, the water vapor concentration of the reducing gas is set to 23 vol% or less. When the temperature of the reducing gas after the partial combustion step is not lower than 1000°C, the water vapor concentration of the reducing gas is set to 24 vol% or less.
Disclaimer: Curated by HT Syndication.
