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Midrex Technologies Inc patents


Recent patent applications related to Midrex Technologies Inc. Midrex Technologies Inc is listed as an Agent/Assignee. Note: Midrex Technologies Inc may have other listings under different names/spellings. We're not affiliated with Midrex Technologies Inc, we're just tracking patents.

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Direct reduction process and shaft furnace utilizing an extended flow diverter cone

A shaft furnace for producing metallic direct reduced iron (dri) from iron-containing pellets or lumps and reducing gas disposed therein, including: a circumferential outer wall defining a top interior reducing zone, a middle interior transition zone, and a bottom interior cooling zone, wherein the iron-containing pellets or lumps travel downwards through the top interior reducing zone, the middle interior transition zone, and the bottom interior cooling zone as the iron-containing pellets or lumps encounter the upward-flowing reducing gas and one or more other gases; and a flow diverter disposed along a centerline of the circumferential outer wall including a convex-upwards upper tapering section disposed in the middle transition zone defined by the circumferential outer wall coupled to a convex-downwards lower tapering section disposed in the bottom cooling zone defined by the circumferential outer wall.. . ... Midrex Technologies Inc

Direct reduction with coal gasification and coke oven gas

A method and apparatus for producing direct reduced iron (dri), including: generating a reducing gas in a coal gasifier using coal, oxygen, steam, and a first coke oven gas (cog) stream as inputs to the coal gasifier; and delivering the reducing gas to a shaft furnace and exposing iron ore agglomerates to the reducing gas to form metallic iron agglomerates. The method further includes delivering a second cog stream directly to the shaft furnace.. ... Midrex Technologies Inc

Methods for mitigating the buildup of direct reduced iron clusters on the walls of a direct reduction furnace

A method for mitigating the buildup of direct reduced iron (dri) clusters on the walls of a direct reduction (dr) furnace, comprising: injecting one or more of lime, dolomite, and another anti-sticking agent into a charge disposed within a reduction zone of the dr furnace, wherein the one or more of lime, dolomite, and another anti-sticking agent is injected into the charge by one or more of: (1) injecting the one or more of lime, dolomite, and another anti-sticking agent into a bustle gas stream upstream of a bustle of the dr furnace; (2) injecting the one or more of lime, dolomite, and another anti-sticking agent into the bustle gas stream in the bustle of the dr furnace; (3) injecting the one or more of lime, dolomite, and another anti-sticking agent into the bustle gas stream through a pipe collocated with a bustle gas port through which the bustle gas stream is introduced into the dr furnace; and (4) injecting the one or more of lime, dolomite, and another anti-sticking agent directly into the reduction zone of the dr furnace separate from the bustle gas stream.. . ... Midrex Technologies Inc

Methods and systems for increasing the carbon content of sponge iron in a reduction furnace

Methods and systems for producing direct reduced iron having increased carbon content, comprising: providing a reformed gas stream from a reformer; delivering the reformed gas stream to a carbon monoxide recovery unit to form a carbon monoxide-rich gas stream and a hydrogen-rich gas stream; and delivering the carbon-monoxide-rich gas stream to a direct reduction furnace and exposing partially or completely reduced iron oxide to the carbon monoxide-rich gas stream to increase the carbon content of resulting direct reduced iron. The carbon monoxide-rich gas stream is delivered to one of a transition zone and a cooling zone of the direct reduction furnace. ... Midrex Technologies Inc

Methods and systems for increasing the carbon content of sponge iron in a reduction furnace

A method for producing direct reduced iron having increased carbon content, comprising: providing a carbon monoxide-rich gas stream; and delivering the carbon-monoxide-rich gas stream to a direct reduction furnace and exposing partially or completely reduced iron oxide to the carbon monoxide-rich gas stream to increase the carbon content of resulting direct reduced iron. The carbon monoxide-rich gas stream is delivered to one or more of a transition zone and a cooling zone of the direct reduction furnace. ... Midrex Technologies Inc








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