Ilmenite can be converted into pigment grade titanium dioxide via either the sulfate process or the chloride process. Ilmenite can also be improved and purified to Rutile using the Becher process. Ilmenite ores can also be converted to liquid iron and a titanium rich slag using a smelting process.

ilmenite sulfate process iron recovery A novel process for recovery of iron, titanium, and vanadium from titanomagnetite concentrates: NaOH molten salt roasting and water leaching ... Instead, the ilmenite concentrates is used in the sulfate process to produce TiO 2 pigment. ...

Ilmenite contains nearly 53% of TiO 2 (rutile) and is an essential mineral for the processing of titanium with silica impurities of about 10%, iron oxide, vanadium, niobium, tantalum, tin, chromium, and molybdenum compounds. In the form of magmatic, titanium is shaped in titanite (CaTi(O|SiO 4)) containing silica 58. Ilmenite

Sulfate process plants must utilise lowvanadium ilmenite, as vanadium is a penalty element. Titanium dioxide pigment can also be produced from higher titanium content feedstocks such as upgraded slag, rutile and leucoxene via a chloride acid process.

The Becher process reduces the iron oxide contained in the ilmenite to metallic iron and then reoxidises it to iron oxide and in the process, separates out the titanium dioxide as .

Mar 10, 2009· A titania slag product of Rosetta ilmenite assaying 72% TiO2 is treated by the sulfate process option of the pigmentary TiO2manufacture. The relevant factors of acid concentration, particle size,... Sulfate digestion process for high purity TiO2 from titania slag | SpringerLink

sulphate processes have also been developed and be come more and more important due to its low energy requirement compared to the conventional thermo and electro chemical processes . The present work is concerned with the direct preparation of anatase grade TiO 2 pigment from Rosetta ilmenite concentrate using the sulphate process.

traditional "sulfate" process consists in solubilizing ilmenite or slag by dissolving it in concentrate sulphuric acid or in a stream of chlorine gas to produce a vapour mix of chlorides. The main technical requirement for sulfate process feed stocks is that these must be soluble in concentrate sulphuric acid.

Jul 15, 2013· The sulfate process generates metal sulfates, iron sulfate, as waste, and these sulfates and waste sulfuric acid are difficult to recover and recycle. In contrast, the chlorine process recycles chlorine gas (Cl 2) directly back into the process. The sulfate process uses feedstocks with lower TiO 2 content, so more waste must be separated. Also, continuous processes are inherently .

Nov 04, 2013· Therefore, China produces about million tons of TiO 2 pigment per year in sulphate process, in which ilmenite is firstly leached with concentrated sulphuric acid and then the Ticontained solution is purified and hydrolyzed.

In the past, ilmenite has commercially been converted to TiO 2 via the sulphate process. High grade ilmenites are dissolved in concentrated sulphuric acid and first hydrolyzed to titanium oxide hydrates and then these hydrates are calcined to the anatase form of TiO 2.

Manufacture of titanium dioxide. There are two main processes, the Sulfate Process and the Chloride Process (Table 1) which use the two principal ores, ilmenite and rutile, respectively. Ilmenite contains 4560% TiO 2 and rutile contains up to 99% TiO 2. The ores are mined worldwide but most production is in Australia and South Africa.

sulfate process, which utilizes ilmenite as a raw material, is well known and widely used but unfavorable. This is due to environmental conce rns and the production of a large volum e of byproducts

Sulphategrade ilmenite can be further upgraded in a smelting process to produce titanium dioxide slag, or it can be used as a feedstock in the sulphate TiO 2 pigment production process. Chloride grade ilmenite can be upgraded to synthetic rutile or it can be used as a feedstock by some chloride TiO 2 pigment producers.

a sulfate process for producing titania from a titaniferous material (such as an ironcontaining titaniferous material; such as ilmenite) is disclosed: l'invention concerne un procédé au sulfate pour produire du titane à partir d'un matériau titanifère ...

Ilmenite is ultimately converted into pigment grade titanium dioxide via either the sulfate process or the chloride process. Sulfate process plants must utilise lowvanadium ilmenite, as vanadium is a .

Ilmenite smelting is a carbothermic process to upgrade the mineral ilmenite, yielding TiO2rich slag (which is mainly used as a feed stock for TiO 2 pigment production) as primary pr oduct and pig iron as a byproduct. This smelting process is unusual in having .

Ilmenite can be converted into pigment grade titanium dioxide via either the sulfate process or the chloride process. Sulfate process plants must utilise lowvanadium ilmenite, as vanadium is a penalty element. Ilmenite can also be imnproved and purified to Rutile using the Becher process. Ilmenite ores can also be converted to liquid iron and a titanium rich slag using a smelting process.[9]

initial phases of the chloride process; however, it is used later on in downstream surface treatment of TiO 2. The sulfate process relies on sulfuric acid (H 2 SO 4) to leach titanium from ilmenite ore (FeTiO 3). The resulting reaction produces titanyl sulfate (TiOSO 4). A secondary hydrolysis stage is used to break the titanyl sulfate into ...