Reduction of Titania-Ferrous Ore by Hydrogen

摘要: The reduction of titania-ferrous ore (ironsand) containing 57.2 mass% iron and 7-8 TiO 2 was investigated in isothermal experiments using H -Ar gas mixtures a laboratory fixed bed reactor the temperature range from 973 to 1 373 K. degree measured an on-line Dew Point sensor samples course were characterized SEM XRD analyses. complete oxide by 25vol%H achieved within 60 min at higher than 123 At 173 K, rate increased with hydrogen content reducing up . composition after 2-h depended on temperature. Below 073 final sample contained iron-titanium oxides. temperatures above composed titanium oxide. path K is suggested as follows: Fe 3-x Ti x O 4 →'FeO'+Fe 3-x-δ x+δ →Fe+Fe →Fe+xTiO , (0<δ<1-x).