公开(公告)号：US09797023B2

公开(公告)日：2017-10-24

申请号：US14282585

申请日：2014-05-20

Applicant: Grede LLC

Inventor： Bill Connors ,  Kipp Witters

IPC: C21B11/02 ,  C21B5/00 ,  C21B7/16 ,  F27B1/16 ,  F27B1/28 ,  C21B13/02

CPC classification number: C21B5/001 ,  C21B5/006 ,  C21B7/16 ,  C21B11/02 ,  C21B13/023 ,  C21B2005/005 ,  F27B1/16 ,  F27B1/28 ,  Y02P10/143

Abstract: A method of operating a shaft furnace includes inserting a mixture including anthracite coal and coke into a cavity defined by the furnace, and disposing a metal feedstock 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 cavity simultaneously through at least one burner. The method also includes driving a second quantity of oxygen gas at a supersonic oxygen gas flow rate into the cavity through at least one lance, wherein the supersonic oxygen gas flow rate is greater than the first oxygen gas flow rate. The method also includes combusting the mixture within the cavity to 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 also disclosed.

公开(公告)号：US20150176095A1

公开(公告)日：2015-06-25

申请号：US14282585

申请日：2014-05-20

Applicant: Grede LLC

Inventor： Bill Connors ,  Kipp Witters

IPC: C21B5/00 ,  F27B1/28 ,  F27B1/16 ,  C21B7/16 ,  C21B7/00

CPC classification number: C21B5/001 ,  C21B5/006 ,  C21B7/16 ,  C21B11/02 ,  C21B13/023 ,  C21B2005/005 ,  F27B1/16 ,  F27B1/28 ,  Y02P10/143

Abstract: A method of operating a shaft furnace includes inserting a mixture including anthracite coal and coke into a cavity defined by the furnace, and disposing a metal feedstock 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 cavity simultaneously through at least one burner. The method also includes driving a second quantity of oxygen gas at a supersonic oxygen gas flow rate into the cavity through at least one lance, wherein the supersonic oxygen gas flow rate is greater than the first oxygen gas flow rate. The method also includes combusting the mixture within the cavity to 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 also disclosed.

Abstract translation: 操作竖炉的方法包括将包含无烟煤和焦炭的混合物插入由炉限定的空腔中，并将金属原料设置在空腔内。 该方法包括通过至少一个燃烧器将天然气流量的天然气和第一氧气流量的第一量氧气注入到空腔中。 该方法还包括通过至少一个喷枪将超声波氧气流量的第二量氧气驱动到空腔中，其中超音速氧气流量大于第一氧气流量。 该方法还包括将空气中的混合物燃烧以产生堆叠气体，熔化金属原料以产生熔融金属材料，并监测堆叠气体从而操作竖炉。 还公开了一种竖炉。