公开(公告)号：US20220403481A1

公开(公告)日：2022-12-22

申请号：US17843013

申请日：2022-06-17

申请人： Midrex Technologies, Inc.

发明人： Haruyasu Michishita ,  Taiji Hatakeyama ,  Todd Astoria

IPC分类号： C22B1/24 ,  C21B3/02

摘要： A process for producing hot briquetted iron with increased solid carbonaceous material and/or flux includes: providing a shaft furnace of a direct reduction plant to reduce iron oxide with reducing gas; providing a hot briquette machine to produce hot briquetted iron; coupling a chute between a) a discharge exit of the shaft furnace for discharge of hot direct reduced iron and b) an entrance of the hot briquette machine; adding solid carbonaceous material and/or flux to the discharged hot direct reduced iron from the shaft furnace to produce a mixture of the discharged hot direct reduced iron and the solid carbonaceous material and/or flux before feeding to the hot briquette machine; and processing in the hot briquette machine to produce a product of hot briquetted iron with increased solid carbonaceous material content greater than about 3 weight percent and/or an increased flux content.

公开(公告)号：US12000011B2

公开(公告)日：2024-06-04

申请号：US17843013

申请日：2022-06-17

申请人： Midrex Technologies, Inc.

发明人： Haruyasu Michishita ,  Taiji Hatakeyama ,  Todd Astoria

IPC分类号： C22B1/24 ,  C21B3/02 ,  C21B13/00 ,  C21B13/02 ,  C22B1/243 ,  C22B1/244 ,  F27B1/00 ,  F27D3/08 ,  F27D13/00

CPC分类号： C22B1/24 ,  C21B3/02 ,  C21B13/008 ,  C21B13/0086 ,  C21B13/02 ,  C22B1/243 ,  C22B1/244 ,  F27B1/00 ,  F27D3/08 ,  F27D13/00

摘要： A process for producing hot briquetted iron with increased solid carbonaceous material and/or flux includes: providing a shaft furnace of a direct reduction plant to reduce iron oxide with reducing gas; providing a hot briquette machine to produce hot briquetted iron; coupling a chute between a) a discharge exit of the shaft furnace for discharge of hot direct reduced iron and b) an entrance of the hot briquette machine; adding solid carbonaceous material and/or flux to the discharged hot direct reduced iron from the shaft furnace to produce a mixture of the discharged hot direct reduced iron and the solid carbonaceous material and/or flux before feeding to the hot briquette machine; and processing in the hot briquette machine to produce a product of hot briquetted iron with increased solid carbonaceous material content greater than about 3 weight percent and/or an increased flux content.