Investigation of Direct Reduction Mechanism of Attepe Iron Ore by Hydrogen in a Fluidized Bed

Autor:	Sedat Yörük, Şahin M. Gülaboğlu, Nesibe Dilmaç
Rok vydání:	2015
Předmět:	Hydrogen Metallurgy Kinetics Metals and Alloys Nucleation chemistry.chemical_element engineering.material Condensed Matter Physics Metal Reduction (complexity) chemistry Iron ore Mechanics of Materials Fluidized bed visual_art Materials Chemistry visual_art.visual_art_medium engineering Wüstite
Zdroj:	Metallurgical and Materials Transactions B. 46:2278-2287
ISSN:	1543-1916 1073-5615
DOI:	10.1007/s11663-015-0409-8
Popis:	In this study, the kinetics of reduction of Attepe iron ore by H-2 in a batch fluidized bed is analyzed at temperatures of 873 K, 973 K, and 1073 K (600 A degrees C, 700 A degrees C, and 800 A degrees C). It is determined that the reduction route includes two consecutive regions controlled by distinct steps. The first region which takes place at low reduction levels is determined to be controlled by nucleation of wustite, while the following is determined to be controlled by gas/solid reaction occurring at metallic iron/wustite interface. An "ad-hoc" model is used to represent the reduction of Attepe iron ore to metallic iron with good accuracy.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb2df1540676c2039c1832ebeba6eab6 https://doi.org/10.1007/s11663-015-0409-8 Zobrazit plný text záznamu Full text from SpringerLink