[특허]Plant and process for fluidized bed reduction of ore

Plant and process for fluidized bed reduction of ore 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C21B-007/22
출원번호	US-0708898 (1991-05-31)
발명자 / 주소	Whipp Roy H. (Miami FL)
출원인 / 주소	Fior de Venezuela (Pto. Ordaz VEX 03)
인용정보	피인용 횟수 : 22 인용 특허 : 0

초록 ▼

An improved FIOR processing plant and method for reducing raw iron ore fines into a 90+% metallized briquette product utilizing a multi-stage fluidized bed reactor in which the reducing and fluidizing gases are the products of partial combustion of methane with oxygen, the gases being introduced into an intermediate zone of the reducing tower above the stage or stages where final metallization occurs. Said processing plant including an ore preparation and feed assembly, a multi-stage reactor assembly, a briquetting assembly, a recycle and fresh reducing gas assembly, and, a heat recuperation assembly.

대표청구항 ▼

In a processing plant for reducing wet iron ore fines under ½″including a reactor assembly, a preheat reactor assembly, and, an ore feed assembly with an ore feed conduit means for transferring iron ore to said reactor assembly, said preheat reactor assembly comprising: a preheat reactor; a quench and gas cleanup system; an airstream source means for providing an airstream; a natural gas source means for providing natural gas; said preheat reactor including: a reactor vessel including an upper cavity portion and a lower cavity portion; ore inlet port means for connecting said upper cavity portion to the ore feed conduit means; gaseous exhaust port means for connecting said upper cavity portion to said quench and gas cleanup system; ore outlet port means for providing an exit for ore fines from said lower cavity portion and out of said preheat reactor; air intake port means connecting said lower cavity portion to said airstream source means and facilitating the development of an airstream upward from the lower cavity portion to the upper cavity portion and out of the gaseous exhaust port means; said airstream passing through falling iron ore fines and developing a fluidized bed of iron ore fines within said reactor vessel; said air intake port means being located below said ore outlet port means; natural gas injection means for injecting natural gas into said airstream and for igniting said natural gas in said airstream; said natural gas injection means including natural gas intake port means connecting said lower cavity portion to said natural gas source means; and, combustion air means for providing combustion air and mixing combustion air with said natural gas to facilitate combustion, said mixture being referred to as flue gas.

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Shin, Myoung-Kyun; Lee, Jun-Hyuk; Jeong, Sun-Kwang; Choi, Nag-Joon; Kim, Hang-Goo; Kang, Heung-Won, Fluidized bed breakage prevention system for fluidized bed reduction reactor and method.
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Dominic M. Faccone ; Narayan Govindaswami, Integrated mini-mill for iron and steel making.
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Geiger Gordon H. ; Swanson Arden W. ; Stephens Frank A. ; Stephens ; Jr. Frank M., Iron carbide process.
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Stevens James E. (Bay Village OH) Swanson Arden W. (North Olmsted OH), Iron carbide process.
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Swanson Arden W., Iron carbide process.
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Dam Oscar G.,VEX ; Albarran Wolfgang A.,VEX, Method for reforming reducing gas in a fluidized bed process for reduction of ore.
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Kuivalainen, Reijo; Eriksson, Timo; Hotta, Arto, Method of operating an oxycombustion circulating fluidized bed boiler.
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Gorbell, Brian N.; Carin, legal representative, Christianne; Fedkenheuer, Alvin W.; Jonasson, John S.; Starosud, Alexander, Process and system for drying and heat treating materials.
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Cip Gerhard,ATX ; Rossmann Gottfried,ATX ; Milionis Konstantin,ATX ; Whipp ; Jr. Roy Hubert, Process for the direct reduction of particulate iron-containing material and a plant for carrying out the process.
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Frank M. Stephens, Jr. ; Frank A. Stephens ; Robert F. Hogsett ; John P. Hager, Process for the production of iron carbide from iron oxide using external sources of carbon monoxide.
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Meissner David C. (Charlotte NC) Sugiyama Kimio (Osaka JPX) Kobiyashi Isao (Miki JPX) Ohiraki Kenji (Akashi JPX) Ano Shintaro (Kobe JPX), Spouted bed circulating fluidized bed direct reduction system and method.
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Stephens ; Jr. Frank M., Two step process for the conversion of iron oxide into iron carbide using gas recycle.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Plant and process for fluidized bed reduction of ore 원문보기

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Plant and process for fluidized bed reduction of ore 원문보기

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