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SYSTEM AND METHOD FOR FLUIDIZED DIRECT REDUCTION OF IRON ORE CONCENTRATE POWDER
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Title:
SYSTEM AND METHOD FOR FLUIDIZED DIRECT REDUCTION OF IRON ORE CONCENTRATE POWDER
Author:
MU, Wenheng
;
LI, Hongzhong
;
JIAO, Xingang
;
WANG, Cunhu
;
XIE, Zhaohui
;
ZHU, Qingshan
;
FAN, Chuanlin
Subjects:
BLASTING
;
CHEMISTRY
;
CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS
;
FURNACES
;
FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL
;
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
;
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
;
HEATING
;
KILNS
;
LIGHTING
;
MANUFACTURE OF IRON OR STEEL
;
MECHANICAL ENGINEERING
;
METALLURGY
;
METALLURGY OF IRON
;
OPEN SINTERING OR LIKE APPARATUS
;
OVENS
;
RETORTS
;
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
;
TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
;
WEAPONS
Description:
A system and method for the fluidized direct reduction of iron ore concentrate powder. A two-phase fluidized bed is used for the direct reduction of iron ore concentrate powder. Each phase of the fluidized bed is formed by a bubbling bed and a circulating bed. Use of serial-connection processing involving gas and of high-gas-velocity processing of the circulating bed increase the gas utilization rate and the reduction efficiency of single-phase reduction. Once reduced gases are subjected to preheating, each gas is sent into an initial reduction phase and a final reduction phase so as to implement reduction of minerals. Use of mixed-connection processing involving gas appropriately reduces processing pressure. Hot flue gas produced by combustion in a gas heater is sent to a mineral pre-heating system that is used for pre-heating iron ore concentrate powder. Järjestelmä ja menetelmä rautamalmikonsentraattijauheen suoraa leijupetireduktiota varten. Rautamalmikonsentraattijauheen suorassa reduktiossa käytetään kaksivaiheista leijupetiä. Kukin leijupetivaihe muodostetaan kuplivalla leijupedillä ja kiertoleijupedillä. Kaasua käyttävän sarjakytkentäkäsittelyn ja kiertoleijupedin suurinopeuksisen kaasukäsittelyn käyttö nopeuttavat kaasun käyttöastetta ja yksivaiheisen reduktion reduktiotehoa. Kun redusoidut kaasut esilämmitetään, kukin kaasu siirtyy alkureduktiovaiheeseen ja loppureduktiovaiheeseen mineraalien reduktion toteuttamiseksi. Kaasua käyttävän sekakytkentäkäsittelyn asianmukainen käyttö pienentää käsittelypainetta. Kaasunlämmittimessä polttamalla tuotettu kuuma polttokaasu siirretään mineraalin esilämmitysjärjestelmään, jota käytetään rautamalmikonsentraattijauheen esilämmityksessä.
Creation Date:
2019
Language:
English;Finnish;Swedish
Source:
esp@cenet
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