US4158041A Separation of ilmenite and rutile. US3434947A Process for the separation of iron from metal sulphate solutions and a hydrometallurgic process for the production of zinc. US6699446B2 Methods for separation of titanium from ore. US4269809A Recovery in titanium metal values by solvent …

The photocatalytic activity for oxidation of NH 3 was firstly tested. As shown in Fig. 1, under UV irradiation, both CuO x-anatase and CuO x-rutile show much higher activity compared with pure anatase and rutile TiO 2.The CuO x-anatase is more active than CuO x-rutile under UV light irradiation (Fig. 1 a), and the NH 3 conversion over …

Conclusions. The magnetic properties and the magnetic separation behavior of ilmenite, hematite and a rutile sample (LR Rutile) produced from Athabasca oil sands tailings were studied and the following conclusions can be drawn: 1. Oxidation roasting increased the magnetic susceptibility of ilmenite within the temperature range of …

A Case Study. T. Smijs, S. Pavel, in Nanoengineering, 2015 2.1 Manufacturing. Ilmenite (FeTiO 3) and rutile (TiO 2) are the most important ores used as raw material for TiO 2.Although natural rutile contains a high amount of TiO 2 with low level of impurities, the mineral is becoming scarce and thus more costly. Consequently, ilmenite is currently …

The mineral is insoluble in acids. The density varies between 4.2 and 5.6 and is a function of substitution by high field strength elements in the rutile crystal lattice10. Colour varies from black to deep red and yellow, but is typically yellow to reddish-brown in thin section.

The optimum conditions for maximising the dissolution of iron, while minimizing the dissolution of titanium were at a temperature of 80 °C, HCl of 6 M, S/L ratio of 1/20 g/mL, …

The flowsheet shown in Fig. 1 involves three main operations: (i) oxalic acid leaching of RM to obtain an iron product and a REE-rich residue (Li et al., 2022a), (ii) pH adjustment for the Fe-removed leachate to precipitate Si and Ti, and (iii) production of Al(OH) 3 and SiO 2 (with Ti entrapped), as the two primary products. Fig. 1 also depicts …

Electric separation. Rutile is a good conductor of electricity, while minerals such as silicate, zircon, and leucox are not conductive, so it is easier to separate rutile from other non-conductive minerals by electro-election. ... Magnetic separate the iron, requires the iron contend <0.08% 3. The finished silica sand product is used to make a ...

Nevertheless, a magnetic separation followed by gravity separation of the non-magnetic fraction further improved the recovery of ilmenite, magnetite, monazite, and zircon to 86.96%, 85.09%, 91.06% ...

and leucoxene concentrates. An electrostatic separation is first done. The con-ductive minerals are leucoxene and rutile and the non-conductive minerals are zircon. Different categories of zirconia products will be produced using a series of mag-netic and electrostatic separation (Figure 2). The categories of zirconia produced

The synthetic rutile with 92%–94% TiO 2 was produced from ilmenite with low impurity by the reduction–corrosion process in Australia . ... 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 ...

Low intensity magnetic separation pulls out metallic iron and magnetite. The concentrates pass through a high intensity magnetic separator to pull out the ilmen­ite fraction—46 to 48% TiO2. The non-magnetic frac­tion is subjected to high intensity electrostatic separa­tion which removes the high grade rutile—94-95% TiO2.

Roasting also activates the iron component of the ilmenite so that iron leaching is enhanced. Iron and other impurities are removed by leaching in 25% (w/w) HCl. The resultant solids are then filtered, washed and calcined. The product is subjected to a last stage magnetic separation and a synthetic rutile containing > 97% TiO 2 is obtained.

Separation of Iron by Hydrometallurgical Route The hydrometallurgical route was devel- ... Fig. 4: Production of synthetic rutile from high grade ilmenite ore Table 1: Production …

Section snippets Materials. Water suspension of a commercial amorphous titanium dioxide (TiO 2 /A) from sulfate technology supplied by "Chemical Factory Police S.A." (Poland) was used as a starting material for the synthesis of N-modified, Fe-modified and (Fe,N)-co-modified rutile TiO 2 photocatalysts. The BET surface area of the TiO 2 /A …

Consequently, in situ separation of rutile crystals from the slag melt was conducted in a super-gravity field at the precipitation temperature, where rutile crystal was the only solid phase and other minerals formed molten slag. The slag melt went through a filter as driven by super-gravity, whereas the rutile crystals were overall intercepted ...

Based on the phase transformation, the crystallization and separation behaviors of rutile in the CaO–TiO 2 –SiO 2 –Al 2 O 3 –MgO slag system, selective crystallization, and separation of rutile from the Ti-bearing blast furnace slag produced from Panzhihua Iron and Steel Corporation of China are carried out. 2.2.5.1 …

The isoelectric points of monazite, apatite, ilmenite, quartz, rutile, and zircon are 5.3, 8.7, 3.8, 3.4, 6.3, and 5.1, respectively. Thermodynamic parameters of adsorption were evaluated. ... Appropriate use of depressant is recommended in order to enhance the separation of monazite from its gangue. ... the strongest being that of iron. Table ...

Natural rutile concentrates, which typically contain 92%–96% wt. TiO 2, ... The removal of "tramp" iron from feed belts can also be regarded as a form of low-intensity magnetic separation. However, tramp iron removal is usually accomplished by means of a magnetic pulley at the end of an ore conveyor ...

Flotation-magnetic separation technique has been developed recently for effective separation of rutile from its associated gangue minerals. However, there is a substitution of titanium in the rutile crystal lattice which could occur by iron in the form of isomorphism, and thus, fine rutile particles are often wrapped by almandine, hence …

The residual iron oxides from the product are then leached with sulphuric acid and removed from the synthetic rutile. The Benelite process involves the reduction of …

A type II band alignment of ~ 0.4 eV is present, significantly lowering the effective bandgap of composite materials, and facilitating efficient electron–hole separation. This alignment is the ...

Additional iron modification of the rutile samples successfully inhibited the recombination process and allowed more efficient photocatalytic reaction of acetic acid decomposition. Needless to say, the obtained apparent quantum efficiency values are very high, especially in the visible region. ... Moreover, the additional charge separation (3 ...

[Show full abstract] of 50-250 W, the amorphous, rutile, and both rutile and anatase phases TiO2 films were obtained in sequence, while the content of anatase is similar in the range of 34-37% ...

Synthetic Rutile (SR) is an upgraded ilmenite product that has TiO2 content between 88 and 96%. Ilmenite can be upgraded into SR via two methods: (i) 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).

IRON REMOVING FROM TITANIUM SLAG FOR SYNTHETIC RUTILE Natural rutile, owing to its high titanium content and low levels of impurities, has traditionally been

High-purity rutile (TiO 2) possessing favorable dielectric properties was sustainably recovered from Ti-bearing blast furnace slag through phase transformation and super-gravity separation in this study. Firstly, the phase transformation behavior of Ti was studied, the favorable conditions for transformation from perovskite to rutile were …