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Enhanced reduction of ilmenite ore by preoxidation in
2022年6月1日· LPreoxidized ilmenite* means the material was obtained from reducing the lowtemperature preoxidized ilmenite at 800 °C for 75 min to obtain porous ilmenite In previous studies, the reduction kinetics of raw ilmenite and oxidized ilmenite were2020年1月1日· The reduced ilmenite samples used in the present study were provided by a local producer and used as received The reduced ilmenite was produced byPreparation of synthetic rutile from reduced ilmenite
Catalytic removal of iron from reduced ilmenite ScienceDirect
2001年3月1日· In a recent process (Becher et al, 1965), the iron oxide of ilmenite is reduced to the metallic state using coal, which is then catalytically converted to solid iron2019年3月15日· The best reduction conditions under optimized parameters enhanced the TiO2 from initial 51 to 93 wt pct in the synthetic rutile The Xray diffraction and electronDirect Carbothermic Reduction of Weathered Ilmenite for
Chlorination of reduced ilmenite concentrates and synthetic rutile
2011年9月14日· Carbothermal reduction of ilmenites at 1450 °C in argon produced titanium oxycarbide, while in reduction in nitrogen oxycarbonitride was formed Iron2017年6月13日· ElGuindy and Davenport (1970) found that the reduction of ilmenite was initiated at the contact between solid carbon and ilmenite particles, which controlled the reduction in the temperature range 860Solidstate reduction of an ilmenite concentrate with
Reduction and Nitridation Behaviors of Ilmenite with Clean
2022年7月13日· Traditional fluidizing chlorination is not suitable to ilmenite containing high contents of MgO and CaO In this study, a new process for reduction and nitridation of2022年5月31日· This paper examines the effectiveness of the method for producing synthetic rutile from ilmenite through preoxidation and reductive leaching of preProduction of synthetic rutile from tin ore beneficiation Nature
Removal of Metallic Iron from Reduced Ilmenite by Aeration
2020年7月29日· Ilmenite contains 40–65% titanium as TiO 2, with the rest being iron oxide The Becher process removes the iron oxide, leaving a residue of SR that2020年7月29日· The reduced ilmenite, obtained from the carbothermic reduction of ilmenite concentrate in a rotary kiln at about 1100 °C, contained 6288% TiO2 and 2893% Metallic ironRemoval of Metallic Iron from Reduced Ilmenite by Aeration Leaching
Chlorination of reduced ilmenite concentrates and synthetic rutile
2011年9月14日· Fig 1 Extent of chlorination of titanium and iron from reduced ilmenite concentrates of different grade and synthetic rutile at 235 °C with pure chlorine at 100 mL∙min − 1 Carbon to TiO 2 molar ratio was 45 (a) chlorination of titanium; (b) chlorination of iron; (c) change of sample temperature during chlorination2022年7月13日· Lowvalence titanium oxide (Ti 3 O 5) was observed at 900 °C (3–8 h), while only Fe and Ti(N,O) were obtained after roasted at 1000 °C form 8 h (3) FeTiO 3 was reduced and nitrided step by step, which can be divided into initial deoxidation to form Fe and TiO 2, deep deoxidation and nitridation of TiO 2 to generate Ti(N,O)Reduction and Nitridation Behaviors of Ilmenite with Clean
Preparation of synthetic rutile from reduced ilmenite through the
2020年1月1日· The reduced ilmenite was produced by carbothermic reduction of ilmenite concentrate in a rotary kiln at about 1150 °C for approximately 8 h ilmenite (iron oxide) reduction and separation by acid leaching and (ii) ilmenite reduction and aeration (Grey and Reid, 1973, Duong et al, 2020, Xiang et al, 2020)2022年6月3日· Some of the tin oxide in the ilmenite concentrate was reduced to tin metal and dissolved into metallic iron solution (Figure 11c) Crystalline phase of titanium oxide/titania was formed and was clearly separated from sodium, silicon, and aluminum as depicted in Figure 11 d–fMetals | Free FullText | Carbothermic Reduction of Ilmenite
HighTitanium Slag Preparation Process by Carbothermic
2020年11月19日· It was generally accepted that FeTiO 3 is first reduced to Fe and TiO 2 during the carbothermal reduction of ilmenite, and TiO 2 is then reduced to a series of lowvalence titanium oxides [2,27] so more titanium oxide was reduced to titanium suboxide as the carbon content increased, resulting in a decrease in the amount ofIlmenite is a combined oxide naturally occurring in the form FeTiO3, which is also the reduced form in CLC The oxidized form is Fe 2 TiO 5 + TiO 2 It has also been shown that there is a migration of Fe to the surface; thus in practice ilmenite is in part an iron oxide material ( Adanez et al, 2010 )Ilmenite an overview | ScienceDirect Topics
Transformation and separation of metallic iron in reduced ilmenite
2020年8月19日· Titanium products, such as TiO 2 pigment and titanium alloy, are widely used in industries due to their superior performance [1,2,3,4]Titanium resources mainly exist in nature in the form of rutile, ilmenite and vanadium titanomagnetite Ilmenite accounts for about 89% of the world’s consumption of titanium minerals, which is the major titanium2020年9月17日· Extraction of titanium alloys from titanium oxide minerals involves carbothermic, aluminothermic, and silicothermic smelting routes The carbothermic smelting of ilmenite produces pig iron and TiO 2rich slag, where the operating temperature is about 1650 °C to 1700 °CSmelting of prereduced ilmenite (≈ 60% metallization of Fe) hasCarboaluminothermic Production of Ferrotitanium from Ilmenite
Titanium: An Overview of Resources and Production Methods
2021年11月15日· Ilmenite is a significant mineral , which contains between 40% and 65% titanium dioxide The other elements are either ferrous oxide or ferric oxide and sometimes small amounts of vanadium, magnesium, and/or manganese Ilmenite’s main sources are the heavy mineral sands (alluvial deposits) but are also commonly distributed in hard rock Ilmenite Prices, Occurrence, Extraction, and Uses Ilmenite, also known as titanium iron, titanium iron ore or by its synonym menaccanite, is a frequently occurring mineral from the mineral class of "oxides and hydroxides" It crystallizes in the trigonal crystal system with the chemical composition FeTiO3 and develops mostly thick tabularIlmenite Prices, Occurrence, Extraction and Uses | Institute for
The application of a novel horizontal frame paddle reactor to
2022年2月1日· The major mineral phases of the reduced ilmenite were characterized by Xray diffraction (XRD) as shown in Fig 2It can be seen that the main crystal phase of the reduced ilmenite was metallic iron (MFe) and rutile (TiO 2), and a small amount of ferrous pseudobrookite (FeTi 2 O 5)The SEM images are shown in Fig 3The reduced ilmenitethe oxidized ilmenite was reduced by bituminous coal at 1100˝°or 120˝min The metallization rate of reduced ilmenite reac%hemical composition of reduced ilmenite is listed in Table˝1, which indicated that he t TiO 2, TF(otal ir)(tallic ir)tents of reduced ilmenite are 5017, 3737 and 3458 % respectivelyTransformation and separation of metallic iron in reduced ilmenite
InSitu Water Production by Reducing Ilmenite
cannot be easily reduced Compared with oxides of silicon, aluminum, titanium, calcium or magnesium, it is much more easily to extract oxygen from iron oxide such as ilmenite In this chapter, experiment simulating insitu water production was designed and operated The principal aim is to describe the reduction of ilmenite, selection2019年9月2日· highly reduced ilmenite is dense, and there is excellent separation between the slag and ferrotitanium Metals 2019 , 9 , 962 5 of 10 Metals 2019 , 9 , x FOR PEER REVIEW 5 of 10(PDF) Preparation of Ferrotitanium Using Ilmenite with Different
USA Production of rutile from ilmenite Google Patents
A catalytic ilmenite reduction procedure is described which provides a magnetic fraction consisting of the iron and titanium values of the ilmenite ores and a nonmagnetic gangue The magnetic fraction, after solubilization of the reduced iron, provides beneficiated Rutiletype titania product with purity ranges from 80 to 95% depending on the grade of2022年6月1日· 1 Introduction With the depletion of natural rutile, ilmenite ore (FeTiO 3) becomes the most important resource for the production of titanium metal (Ti) and Tibased compounds [1, 2]In the industry, the ilmenite is usually reduced to form metallic iron and titanium slag [[3], [4], [5]], in which Ti is enriched for the subsequent intensified sulfatingEnhanced reduction of ilmenite ore by preoxidation in
Investigation of the HydrogenRich Reduction of Panzhihua Ilmenite
2022年6月17日· The hydrogenrich reduction of ilmenite concentrates has a significant effect on the reduction of the carbon footprint of the titanium slag production process This study investigates the hydrogenrich reduction of Panzhihua ilmenite concentrate pellets The pellets were roasted at 500, 700, 900, and 1100 °C and used as the raw material for2017年12月10日· Fig 3 shows the TG/Differential thermogravimetry (DTG) and relative content of the CO/CO 2 curves for the carbothermic reduction of original and preoxidized ilmenite concentrates at different heating rates (10, 15, and 20 K·min − 1)In the temperature program process, the trend of the TG–DTG curves was similar in the sameEffect of preoxidation on the carbothermic reduction of ilmenite
Effect of the oxygen carrier ilmenite on NOX ScienceDirect
2021年11月1日· Cheng et al investigated catalytic decomposition and oxidation of NH 3 over ilmenite and the reduction of NO by reduced ilmenite and NH 3 In doing so, the influence of the NH 3 and syngas feed concentration on the Nspecies selectivity was examined [7] The oxidation of NH 3 with copper oxide as OC was studied by Normann