fluidised bed reduction of oxides ore

Mechanism and Prevention of Agglomeration/Defluidization ,

Mechanism and Prevention of Agglomeration/Defluidization ,

In the case of fluidized-bed reduction of iron ore, earlier works [8, 9, 10] indicated that sticking occurred mostly during metallization of ore The defluidization tended to be preferred at a high fractional reduction and metallization degree Some ore particles were precipitated by the metal iron with the fibrous shape on the particle surface

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Reduction of fine iron ore via a two-step fluidized bed ,

Reduction of fine iron ore via a two-step fluidized bed ,

The industrial application of fluidized bed direct reduction (DR) process for fine iron ore is hampered by the sticking of direct reduction iron (DRI) particl In the present study, the carbon precipitation reaction is coupled with the reduction reaction of fine iron ore to modify the cohesive force among DRI particl

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Direct iron ore reduction by methane in a fluidized bed ,

Direct iron ore reduction by methane in a fluidized bed ,

Novel process chemistry of methane in a fluidized bed was investigated to identify a more direct route to producing the reducing gas needed in the Direct Reduction of iron ore A rather surprising result, however, of the study was the discovery of an inexpensive and attrition-resistant catalytic material for methane oxidative coupling

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Reduction of Iron Ore in a Fluidized Bed with Hydrogen ,

Reduction of Iron Ore in a Fluidized Bed with Hydrogen ,

INTRODUCTION During the past few years there has been considerable interest in developing the so-called direct reduction processes for treating iron oxid The various methods proposed were recently reviewed by Scortecci and Palazzi (1960) In particular the application of fluidized bed techniques received considerable attention and, on first examination, this seems to be the ideal.

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Direct reduced iron - Wikipedia

Direct reduced iron - Wikipedia

The direct reduction process uses pelletized iron ore or natural "lump" ore One exception is the fluidized bed process which requires sized iron ore particl The direct reduction process can use natural gas contaminated with inert gases, avoiding the need to remove these gases for other use

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Reduction of 1—3 mm Iron Ore by CO on Fluidized Bed ,

Reduction of 1—3 mm Iron Ore by CO on Fluidized Bed ,

Available online at sciencedirect -sV;@H ScienceDirect JOURNAL OF IRON AND STEL RESEARCH, INTERNATIONAL 2011, 18(3): 01-05 Reduction of 1 - 3 mm Iron Ore by CO on Fluidized Bed PANG Jian-ming, GUO Pei-min, ZHAO Pei (The State Key Laboratory for Advanced Steel Processes and Products, Central Iron and Steel Research Institute, Beijing 100081, China) Abstract: The reduction ,

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