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Reduced Ilmenite Present

Ilmenite Reduction - Lunarpedia

The product of CO reduction of Ilmenite is Carbon Dioxide (CO 2), which is reduced to CO and oxygen. The CO is recirculated, and the oxygen stored. [2] . The presence of solar wind implanted carbon in the regolith will allow the recovery of additional carbon if recycling efficiency is sufficiently great, though a method for dealing with evolved ...

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Jan 01, 2020 · There was no indication of a secondary reduction step where rutile reduces to a less oxidized state such as Ti 3 O 5 (Bardi et al., 1987) supporting the literature which states that TiO 2 will only begin to reduce when all the ilmenite present has reduced (Zhao and Shadman, 1993).

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In this study, the iron oxide present in ilmenite was reduced for different times and temperatures using coconut pith which is an agrowaste available in large quantities in Kerala. Pith has low S, P and ash contents and has a moderate calorific value. The reduction process was studied using chemical analysis, SEM, X-ray and EPMA.

Solar Carbothermic Reduction of Ilmenite Using Palm Kernel ...

高达10%返现 · Aug 05, 2020 · The reduced ilmenite phase contains a variety of impurities, including Al, Mg, and Mn. The reduced ilmenite was also examined using EPMA. The results are shown in Fig. 6e and f. Major phases present included reduced ilmenite (may include pseudobrookite), Fe metal, Cr-rich spinels, rutile, and zircon.

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A method of preparing a pre-reduced ilmenite ore for smelting, wherein metal oxides contained in the ore are selectively reduced in solid-state reactions over titanium oxide, the method including the step of pre-reducing carbon-based pellets of the ore.

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Titania rich slag used in the present study was obtained after carbothermal reduction of OSCOM ilmenite, supplied by Indian Rare-earth Limited (IREL), Chhatrapur, India. ... pre-reduced ilmenite ...

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The presence of chromite in significant amount in ilmenite downgrades the market value of the ilmenite. A substantial amount of the chromite may be removed, firstly by a reduction step, secondly by a leaching, aeration or oxidation roasting step and finally by a physical separation step. An optional preoxidation may precede the reduction step and an optional physical separation step may be ...

Preparation of synthetic rutile from reduced ilmenite ...

Jan 01, 2020 · The reduced ilmenite samples used in the present study were provided by a local producer and used as received. The reduced ilmenite was produced by carbothermic reduction of ilmenite concentrate in a rotary kiln at about 1150 °C for approximately 8 h. The ilmenite concentrate used in this plant is a natural weathered beach sand with the main ...

Reduction of Manavalakurichi ilmenite by Activated ...

Sep 05, 2018 · The reserves of ilmenite are abundant in India; however, it needs to be upgraded to synthetic rutile. The carbothermic reduction is one of the most effective processing methods to produce TiO2. However, it is more energy intensive method as is carried out at high temperature. The present paper studies the carbothermic reduction of Manavalakurichi ilmenite concentrate by charcoal in the ...

(PDF) Utilization of Roast-Reduced Ilmenite Leach Liquor ...

In the present investigation the ilmenite ore was first subjected to oxidation roasting at the temperatures ranging between 850 - 950 °C to convert ferrous oxide in the ilmenite to ferric state.

WO2017087997A1 - Improved ilmenite smelting process ...

A method of preparing a pre-reduced ilmenite ore for smelting, wherein metal oxides contained in the ore are selectively reduced in solid-state reactions over titanium oxide, the method including the step of pre-reducing carbon-based pellets of the ore.

Transformation and separation of metallic iron in reduced ...

Aug 19, 2020 · Therefore, it is essential to study the transformation mechanism of metallic iron and Ti–Fe separation for the corrosion process of reduced ilmenite. In the present work, the corrosion process of reduced ilmenite was investigated, with the emphasis on the effects of corrosion temperature, oxygen flow rate and corrosion time on the ...

(PDF) Hydrochloric acid leaching of a pre-reduced ...

Hussein et al. w21x studied the hydrochloric acid leaching of a pre-reduced ilmenite under the following conditions: 3.24 M HCl concentration, leaching temperature of 908C, leaching time of 3 h and a solidrliquid ratio corresponding to 7% of solids; they achieved 95% of iron extraction, which is comparable to 97% iron extraction of the present ...

Present Value Calculator

Present Value, or PV, is defined as the value in the present of a sum of money, in contrast to a different value it will have in the future due to it being invested and compound at a certain rate. Net Present Value. A popular concept in finance is the idea of net present value, more commonly known as NPV. It is important to make the distinction ...

CN102534264A - Technique for producing and reducing ...

The invention provides a method for reducing ilmenite, which comprises the following steps: sending ilmenite, a reducer and a desulfurizer, which serve as raw materials, into a microwave high-temperature kiln; sequentially preheating, sintering and cooling; and sequentially pulverizing, screening, carrying out magnetic separation, and carrying out jet mil blending, wherein in the sintering ...

China Titanium manufacturer, Reduced Titanium, Welding Rod ...

Nov 24, 2010 · Shijiazhuang yuanyu trading Co., Ltd founded in 2009, it is founded basis on the shijiazhuang xinsheng reduced ilmenite factory, Shijiazhuang Xinsheng reduced ilmenite factory founded in 1985, at present, it is one of the leading manufacturers of reduced ilmenite in China, and It became the first company export reduced ilmenite at Hebei province in China, It located in

An Optimal Route for the Preparation of Metallized ...

Jul 23, 2021 · The decrepitation of the reduced ilmenite composite pellets compared to that of the raw pellets with 4 wt% binder is shown in Fig. 9. In the present study, the fraction of particles smaller than 0.5 mm is considered to be formed by decrepitation, and so, a decrepitation index of less than 5% by weight is recommended .

WO2016120529A1 - Method for producing titanium oxide ...

The invention relates to a method for producing titanium oxide-containing slag and pig iron from ilmenite. The method is characterized in that it comprises the steps: a) pre-reducing ilmenite in the presence of reductant in a prereduction reactor to metallize at least part of iron in the ilmenite; b) optionally removing unreacted reductant and gangue from the pre-reduced ilmenite; and c ...

WO1996024699A1 - Treatment of titanium-containing material ...

The present invention provides a method of oxidising and removing metallic iron from a titanium-containing material which method includes oxidising the metallic iron in the presence of an additive that accelerates the rate of oxidation of the metallic iron.

US4085190A - Production of rutile from ilmenite - Google ...

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 non-magnetic gangue. The magnetic fraction, after solubilization of the reduced iron, provides beneficiated Rutile-type titania product with purity ranges from 80 to 95% depending on the grade of ilmenite starting material.

percentage of ilmenite in iron ore

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A STRUCTURAL MODEL FOR THE RUSTING OF REDUCED

The major phases present in the reduced ilmenite are anatase, pseudo brookite and metallic iron. In the rusted ilmenite using the above carboxyl compounds along with NH4Cl the . Acta Metallurgica Slovaca, 9, 2003, 1 (13 - 20 ) 15 major phase is anatase. The metallic iron peak has become insignificant confirming that it has been converted to ...

Beneficiation of Iron in Thermal-Reduced Ilmenite by ...

ilmenite, haematite and goethite [6]. The average deposits of a typical iron ore contains 25 – 68% [6]. Geological survey of Kenya [7], reports that laterites containing iron ore deposits are mainly used for surfacing the roads. Research studies recently established that iron in laterites can be used as a source of iron [3-5]. present.

Investigations on reduction of ilmenite ore with different ...

In this study, the iron oxide present in ilmenite was reduced for different times and temperatures using coconut pith which is an agrowaste available in large quantities in Kerala. Pith has lowS ...

An Optimal Route for the Preparation of Metallized ...

The reduced ilmenite composite pellets also display a reasonable decrepitation value of 4.9%, thereby making them suitable to be used directly in arc furnaces for titania slag production.

Combination beneficiation ilmenite digestion liquor ...

According to the present invention, we have discovered that reduced ilmenite, that is ilmenite which has been subjected to a reducing treatment and thus consists essentially of titanium dioxide, metallic iron, and possibly some unreduced iron oxide, may be reacted with an ilmenite digestion liquor formed by the digestion of ilmenite ore with ...

BENEFICIATION OF ILMENITE ORES - LAPORTE INDUSTRIES

The present invention provides a process for beneficiating an ilmenite ore, which comprises forming from the ilmenite a material of which at least 20% by weight has a crystal structure of the pseudobrookite type, reducing the said material under such conditions that not less than 4% of the iron content of the reduced material (calculated as Fe ...

Ilmente Upgrading by the Murso Process - atef.helals.net

Leaching of the reduced product. 4. Solid-Liquid separation. 5. Recovery and recycling of the hydrochloric acid from ferrous chloride liquors. Oxidation. The iron in ilmenite is present in both the ferrous and ferric states and the ratio of ferrous to ferric iron varies in different ilmenites and

Ilmenite - Material Safety and Data Sheet

Ilmenite Sand contains a small amount of free quartz, and precautions should be taken to avoid inhaling the dust Radiation In common with many minerals, Ilmenite contains very low levels of naturally occurring radioactive elements of the uranium and thorium series.

(PDF) Ilmenite Smelting at Ticor SA | Hanlie Kotze ...

In addition, the slag also contains approximately 10% FeO. Also present are impurities such as SiO2, Al2O3, MgO, MnO, CaO, Cr2O3, V2O5, and ZrO2. Due to the reducing conditions in ilmenite smelting, some of the impurities (such as MnO) are partially reduced, and report also to the metal phase.

1 INTRODUCTION - University of Pretoria

• Ilmenite, coal, char and sulphur are reacted in a rotary kiln at approximately 1200 °C in such a way that the iron oxide content of the ilmenite is reduced to metallic iron. This is different to the other synthetic rutile processes where the iron content of the ilmenite is only partially reduced.

Processing Lunar Soils for Oxygen and Other Materials

Processing Lunar Soils for Oxygen and Other Materials . Christian W. Knudsen and Michael A. Gibson . Two types of lunar materials are excellent candidates for lunar oxygen production: ilmenite, FeTiO3, and silicates such as anorthite, CaAI2Si208 (Kesterke 1971, Williams et al. 1979, Williams and Erstfeld 1979, Steurer 1982, Carroll 1983). Both are lunar surface minable, occurring in soils ...

Rutile and ilmenite in Australia - Chemlink

At present, the lower grades of ilmenite (52 to 57 per cent titanium dioxide) are exported without conversion to the rutile by West Australian titanium mineral producers to the sulfate-based and electric arc slagging plants. ... After screening, the slurry of reduced ilmenite (mixture of iron and titanium dioxide) in water is oxidised with air ...

China Titanium manufacturer, Reduced Titanium, Welding Rod ...

Nov 24, 2010 · Shijiazhuang yuanyu trading Co., Ltd founded in 2009, it is founded basis on the shijiazhuang xinsheng reduced ilmenite factory, Shijiazhuang Xinsheng reduced ilmenite factory founded in 1985, at present, it is one of the leading manufacturers of reduced ilmenite in China, and It became the first company export reduced ilmenite at Hebei province in China, It located in

Microwave-Absorbing Characteristics and XRD ...

absorbing characteristics of carbothermic reduced products of ilmenite and oxidized ilmenite [32], and the effect of temperature on dielectric property and microwave heating behavior of low grade Panzhihua ilmenite ore [33], obtaining some significant conclusions, which has allowed us to optimize ... present study was focused on investigating ...