专利名称：SHAFT FURNACE AND METHOD OF
OPERATING SAME
发明人：Bill Connors,Kipp Witters申请号：US14282585申请日：20140520
公开号：US20150176095A1公开日：20150625
专利附图：
摘要：A method of operating a shaft furnace includes inserting a mixture includinganthracite coal and coke into a cavity defined by the furnace, and disposing a metalfeedstock within the cavity. The method includes injecting natural gas at a natural gas
flow rate and a first quantity of oxygen gas at a first oxygen gas flow rate into the cavitysimultaneously through at least one burner. The method also includes driving a secondquantity of oxygen gas at a supersonic oxygen gas flow rate into the cavity through atleast one lance, wherein the supersonic oxygen gas flow rate is greater than the firstoxygen gas flow rate. The method also includes combusting the mixture within the cavityto produce a stack gas, melting the metal feedstock to produce a melted metal material,and monitoring the stack gas to thereby operate the shaft furnace. A shaft furnace is alsodisclosed.
申请人：Grede LLC
地址：Southfield MI US
国籍：US
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