· The XPS analysis confirmed that the relative content of Fe ³⁺ increased from 36.87 to 61.84% following the ultrasonic pre-treatment for 5 min in the pH range 4–5. After the treatment, Fe ²
Consulta
· In this paper, Canadian ilmenite ore-based oxygen carriers (OCs) were, for the first time, prepared by coating the ilmenite ore particles with metal oxides of CeO2, ZrO2, NiO, or Mn2O3 by using
Consulta
· TiO2 composition increased by 61% compared to ilmenite ore when 20% HCl was used, whereas Fe2O3 composition decreased by 88%. The physical properties and photocatalytic activity of the prepared
Consulta
· Ilmenite often contains intra-grain chromium (III) oxide known as chromia (Fisher-White et al. 2007), and so untreated low-grade ilmenite ores cannot be used in the sulphate route feedstock. However, either primary ilmenite concentrates (45–55 wt.% TiO 2 ) or granulated slag fines (70–80 wt.% TiO 2 ) are dissolved in 85–92% sulphuric acid at
Consulta
International Research Journal of Engineering and Technology (IRJET) e -ISSN: 2395 -0056 Volume: 03 Issue: 10 | Oct-2016 www.irjet.net p-ISSN: 2395-0072
Consulta
· Synthetic rutile of about 90% TiO2 and 0.8% Fe2O3 was obtained from an Egyptian medium-grade ilmenite ore of grain size 100%–75 μm using 20% HCl at boiling temperature (110 C), with addition of
Consulta
3Frontier Materials Research, Centre of Excellence (FrontMate), Universiti Malaysia Perlis (UniMAP), 01000 Kangar, Perlis Rocks and sands like ilmenite ore (FeTiO 3), brookie, rutile, and
Consulta
· The ore is an ilmenite-rich norite (or ilmenitite) made up of hemo-ilmenite (Hem22.6–29.4, 66.2 wt.% on Discover the world's research 25+ million members 160+ million publication pages 2.3
Consulta
· The evaluation and optimization process was carried out on magnetic products, especially ilmenite minerals. Sampling is done on the feed and the product based on the tool parameter settings. The
Consulta
· The ilmenite ore used in this study was collected form Pantai Pasir Hitam, Langkawi Island in Kedah State, Malaysia. The ore was cleaned then dried at 100 °C in an oven for 24 h. The magnetic separation process is used to remove non-magnetic minerals such as quartz ( Khuzaima et al., 2018 ; Yunos et al., 2020 ).
Consulta
The low titanium dissolution at room temperature is due to the low reactivity of ilmenite and slag. At 140 °C, about 94% titanium dissolves but increasing the temperature to 180 °C, seriously
Consulta
· In addition to phosphate ore, the separation of ilmenite from quartz can also be achieved by triboelectric separation. As reported by Yang et al. [199], at the optimum conditions of 40 m 3 /h
Consulta
· Abstract. In order to elucidate the reduction kinetics and mechanism of natural ilmenite ore with carbon monoxide, reduction experiments have been carried out using thermogravimetric technique in
Consulta
· Japan, Korea, India, Australia, Indonesia, Thailand, Philippines, Malaysia and Vietnam 1 Report Overview 1.1 Ilmenite Ore Research Scope 1.2 Market Segment by Type 1.2.1 Global Ilmenite Ore
Consulta
· A vanadium-titanium magnetite concentrate with 1.14% V2O5, 22.22% TiO2, 42.51% Fe and a rough concentrate of ilmenite with 16.05% TiO2, 20.77% Fe were obtained from low-grade vanadium-titanium
Consulta
reduction and carboiodination reaction of ilmenite ore. This research aimed to investigate the phase reduction of ilmenite ore during carbothermal reduction at 1550 C and
Consulta
· Mineral ilmenite sand deposit in the Hulu Dungun, Terengganu, Malaysia, has prompted a huge interest in their viability as a new resource survey of titanium dioxide feedstock in Malaysia.
Consulta
· Table 1 presents basic information about ilmenite properties (rutile properties are also provided for a comparison), and Fig. 2 shows the crystal structure of ilmenite. The theoretical TiO 2 content in ilmenite is 52.7% and the specific gravity of ilmenite is high (ilmenite is considered to be a heavy mineral with the specific gravity of
Consulta
· The effects of adding 5 to 25 wt pct of ilmenite ore to hematite ore sinter were investigated employing a horizontal tube furnace to clarify the phase development. The temperature was raised
Consulta
· Kucukkaragoz and Eric [14] investigated the solid-state reduction of natural ilmenite by graphite at 1250-1350 • C and reported that a reduction degree of over 80% was obtained at 1350 • C
Consulta
3 was obtained from an Egyptian medium-grade ilmenite ore of grain size 100%–75 Am using 20% HCl at boiling temperature (110 jC), with addition of 0.11 g iron powder/g ore for 5 h. The product
Consulta
· The chloride process used to high-grade ilmenite (90-95% TiO 2 ) and the sulfate process used to ilmenite (40% -60% TiO 2 ) [9].Purification of TiO 2 from ilmenite, by-product of local zircon
Consulta
· It was found that Langkawi ilmenite ore contained mainly higher TiO 2 and hematite, Fe 2 O 3 where the phases of FeTiO 3 and titanomagnetite, (Fe 2 TiO 4 -Fe 3 O 4 ) were detected using XRD.
Consulta
· The influence of microwave heating on the grinding of Panzhihua ilmenite ore was investigated. Factors that influence the processing are: the microwave exposure time, power density and sample mass
Consulta
Reduction of ilmenite with graphite and coke has been investigated in the temperature range 1273–1423 K. Iron was the only phase produced in the ore after reduction at 1173
Consulta
· Therefore, the organic acids can be used as the iron removing agents. On the other hand, most of these studies were concerned with the extraction of titania from ilmenite by H 2 SO 4 and HCl [10
Consulta
· The carbothermic smelting reduction process of ilmenite ore at high temperature was investigated by thermodynamic calculations in conjunction with smelting experiments. Based on thermodynamic calculations, conducting the smelting process at a higher temperature was recommended to achieve a larger amount of FeO reduction, i.e.,
Consulta
· TiO2 production is a key part of Ti metallurgy and Ti recycling, and the process itself has turned out to be energy-consuming and material-consuming. New technologies are needed to utilize complex Ti ores, such as ilmenite, and reduce the carbon footprint of TiO2 extraction. Ammonium sulfate roasting has been revealed as an efficient
Consulta
· The ilmenite ore used in this study was collected form Pantai Pasir Hitam, Langkawi Island in Kedah State, Malaysia. The ore was cleaned then dried at 100 °C in an oven for 24 h. The magnetic separation process is used to remove non-magnetic minerals such as quartz (Khuzaima et al., 2018; Yunos et al., 2020).
Consulta
· The reactivity of ilmenite as an oxygen carrier (OC) in the presence of H2S was studied. A simulated syngas (66% CO, 34% H2) was used as the fuel. H2S concentrations were set to 4700 and 6580 ppm
Consulta
Trituradora de piedra vendida por proveedores certificados, como trituradoras de mandíbula/cono/impacto/móvil, etc.
OBTENER COTIZACIÓN