ilmenite koh solution

Titanium Dissolution from Indonesian Ilmenite

Ilmenite with aqueous KOH solution by using autoclave[23]. Reffering to those research activities there is no research concern with kinetic study of titanium dissolution from Indonesian decomposed Ilmenite, therefore, at present work a kinetical study for the dissolution of titanium from ...

Preview Objective Chemistry for NEET Vol I by A.K. Singhal ...

Increasing basic nature of hydroxides LiOH NaOH KOH RbOH CsOH 22. Increasing thermal stability of hydroxides LiOH NaOH KOH RbOH CsOH 23. Increasing covalent character LiCl LiBr LiI 24. Increasing ionic character CaCl2 BeCl2 MgCl2 BaCl2 SrCl2 25. Increasing solubility BeCO3 MgCO3 CaCO3 BaCO3 26.

Decomposition of Ilmenite in KOH-H2O Solutions Under High ...

10%· Current methods for decomposing ilmenite 1 are based mainly on the treatment of ilmenite with sulfuric acid or chlorination at high temperatures. The object of the present work was to study the effects of KOH solution on the decomposition …

mica ore mimes in kelantan | Prominer (Shanghai) Mining ...

mica ore mine area in kelantan state of malaysia. mica ore mine area in kelantan state of malaysia gold mining pany malaysia - Quanto Basta clay, coal, copper, feldspar, gold, gravel, ilmenite, iron ore, kaolin, limestone, mica, Malaysian Minerals- Your Gateway To Mineral's World, MINING COMPANIES Current Mining areas in Malaysia Gold mining is carried out in the five states the Sokor Gold ...

Acid leaching of ilmenite decomposed by KOH | Request PDF

Nayl and Aly (2009) decomposed ilmenite in an aqueous solution of KOH and investigated this route by using a range of acids to produce high-grade TiO 2 . Amer (2002) pressure-leached ilmenite at a ...

Decomposition of Ilmenite in KOH-H2O Solutions Under High ...

Current methods for decomposing ilmenite 1 are based mainly on the treatment of ilmenite with sulfuric acid or chlorination at high temperatures. The object of the present work was to study the effects of KOH solution on the decomposition and stability of ilmenite under hydrothermal conditions.

Decomposition of ilmenite by concentrated KOH solution ...

The ilmenite is decomposed in concentrated KOH or NaOH solution under atmospheric pressure and an intermediate with high in titanium and low in iron is obtained by separation, which can be ...

Acid leaching of ilmenite decomposed by KOH | Request PDF

After adding a measured amount of the ilmenite sample (0.18% V 2 O 5 and 0.38% Cr 2 O 3 ) and potassium hydroxide solution, the mixture of the reactants was heated under stirring speed of 375 r/min.

Decomposition of ilmenite by concentrated KOH solution ...

A new process was provided for decomposition of ilmenite by concentrated KOH solution under atmospheric pressure. The significant effects of reaction temperature, KOH concentration, stirring speed, particle size, and alkali-to-ilmenite mass ratios on titanium extraction were studied.

Removal of iron from ilmenite by KOH leaching-oxalate ...

Jan 16, 2010· Oxalic acid was used for the removal of iron from the intermediates of ilmenite leached by KOH liquor. Various parameters, such as pH, temperature, initial oxalate concentration, and illumination were investigated. Meanwhile, it was found that orthorhombic crystal Ti 2 O 2 (OH) 2 (C 2 O 4 )·H 2 O formed as the leaching proceeded.

Selective reduction leaching of vanadium and iron by ...

Large amounts of selective catalytic reduction (SCR) denitrification catalysts with poor mechanical property are disposed and difficult to be regenerated, resulting in environmental pollution.

Decomposition of ilmenite by concentrated KOH solution ...

Nov 01, 2006· The effect of alkali-to-ilmenite mass ratios on the extraction of titanium was investigated in 80 wt.% KOH solution with the 160–180 μm size fraction of the ilmenite at 200 °C, using the alkali-to-ilmenite mass ratios of 5:1, 7:1 and 9:1.

Ilmenite - Wikipedia

Ilmenite most often contains appreciable quantities of magnesium and manganese and the full chemical formula can be expressed as (Fe,Mg,Mn,Ti)O 3.Ilmenite forms a solid solution with geikielite (MgTiO 3) and pyrophanite (MnTiO 3) which are magnesian and manganiferous end-members of the solid solution series.. Although there appears evidence of the complete range of mineral chemistries in the ...

Decomposition of Ilmenite in KOH‐H 2 O Solutions Under ...

May 01, 1976· Required amounts of the solution and the ilmenite sand (i.e. 60 mg of 10M KOH and 50 mg of ilmenite sand) were sealed hermetically in an Au capsule 35 mm long, 3 mm OD, and 0.15 mm thick. The capsule was placed in hydrothermal equipment described in Ref. 2 and the pressure and temperature were raised to the desired value.

Acid leaching of ilmenite decomposed by KOH - ScienceDirect

Jun 01, 2009· Digestion of ilmenite ore decomposed with 70% KOH using L/S of 1/5 at 150 °C for 3 h convert the ilmenite to potassium titanate and iron oxide (ilmenite paste). Less than 2% of iron, chromium, vanadium, and titanium were lost in KOH solution. – The KOH treated ilmenite was subjected to leaching by H 2 SO 4, HCl, and C 2 O 4 H 2 at different ...

Development of an Improved Sub-Molten Salt Method for ...

ilmenite and the desired amount of KOH solution were added to the reactor. The HPHE was then switched on and the system was heated under the specified stirring speed. When the temperature reached the pre-set value and became stable, it was taken as the start of the experiment. At appropriate time intervals during a run, approximately 1 gr of

Extraction behaviours of titanium and other impurities in ...

To effectively utilize ilmenite and recycle KOH solution, the extraction behaviours of titanium and other associated impurities in the decomposition process of ilmenite by highly concentrated KOH solution were studied. Experiments on the extraction behaviours of titanium as well as other associated impurities of ilmenite such as iron, silicon, calcium, and aluminium were carried out.