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Title: System and method for regeneration and recirculation of a reducing agent using highly exothermic reactions induced by mixed industrial slags

Embodiments relate to systems and methods for regenerating and recirculating a CO, H.sub.2 or combinations thereof utilized for metal oxide reduction in a reduction furnace. The reduction furnace receives the reducing agent, reduces the metal oxide, and generates an exhaust of the oxidized product. The oxidized product is transferred to a mixing vessel, where the oxidized product, a calcium oxide, and a vanadium oxide interact to regenerate the reducing agent from the oxidized product. The regenerated reducing agent is transferred back to the reduction furnace for continued metal oxide reductions.
Inventors:
; ;
Issue Date:
OSTI Identifier:
1413238
Assignee:
U.S. Department of Energy (Washington, DC) NETL
Patent Number(s):
9,840,756
Application Number:
14/790,082
Resource Relation:
Patent File Date: 2015 Jul 02
Research Org:
National Energy Technology Lab. (NETL), Pittsburgh, PA, and Morgantown, WV (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE

Other works cited in this record:

Basic refractory and slag management for petcoke carbon feedstock in gasifiers
patent, April 2014

Producing Metal and Carbon Dioxide with Hydrogen Recycle
patent-application, August 2010

Energy recovery from high temperature slags
journal, September 2011

A review of waste heat recovery technologies towards molten slag in steel industry
journal, December 2013

Energy recovery from molten slag and exploitation of the recovered energy
journal, May 1997

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