Mechanism, Thermodynamics and Kinetics of Rutile Leaching ...

Leaching with sulfuric acid cannot ensure complete recovery of titanium from this ore due to the chemical inertness of rutile with respect to concentrated sulfuric acid. The undissolved rutile in the composition of the sludge after processing of ilmenite ores moves into dumps, which leads to accumulation of waste products in the production area ...

Mechanically Activated Rutile and Ilmenite as the Starting ...

Mechanically activated rutile ore used in aluminothermic reduction saved 30% booster expenses and decreased Cl2 emissions. Mechanical activation of ilmenite and ilmenite/aluminum mixtures was performed, and the kinetics of subsequent hydrometallurgical production of synthetic TiO2 by pressure and normal leaching were studied.

(PDF) Reductive Leaching of Ilmenite Ore in Hydrochloric ...

The process is applicable for higher grade ilmenite ores which will produce higher quality synthetic rutile. The leaching of ilmenite ore with HCl. HCl concn.: 20%, temp.: 110 jC, ilmenite/acid ...

PRODUCTION OF HIGH-GRADE SYNTHETIC RUTILE FROM LOW-GRADE ...

What is claimed is: 1. A process for the recovery of high-grade synthetic rutile from low-grade ores, which comprises: (a) performing a first leaching reaction by contacting the low-grade ores with 35-40% hydrochloric acid at an acid to ore ratio of between 2-2.5, and at a temperature of 60-70° C. to obtain a slurry; (b) filtering a filter cake from the slurry obtained in step (a); (c ...

Leaching and kinetics studies on processing of Abu-Ghalaga ...

38%respectively is prepared and used as leaching agent in different stages of the experimental work. 2.2 Methods 2.2.1 Experimental setup Acid leaching of ilmenite ore was carried out using 1000 cm3 three necked glass reactor provided with a reflux condenser and a …

(PDF) Dissolution Kinetics and Leaching of Rutile Ore In ...

Dissolution Kinetics and Leaching of Rutile Ore In Hydrochloric Acid. Download. Related Papers. A study of dissolution kinetics of a Nigerian galena ore in hydrochloric acid. By Folahan Adekola. Simultaneous Recovery of Total Iron and Titanium from Ilmenite Ore by Hydrometallurgical Processing.

Dissolution Kinetics and Leaching of Rutile Ore in ...

Experiments on the dissolution kinetics and leaching of rutile ore by hydrochloric acid have been carried out. The influence of acid concentration, temperature, stirring speed and particle diameter on the leaching of the ore were examined. The dissolution rates were greatly influenced by the hydrogen ion concentration, temperature, stirring speed and particle diameter.

Dissolution Kinetics and Leaching of Rutile Ore in ...

Leaching time (min) Fraction of rutile ore dissolved 0.5M HCl1.0M HCl 2.0M HCl 4.0M HCl 8.0M HCl Fig. 2. Effect of HCl concentration on the dissolution of rutile ore at 550C. From Fig. 2, it is evident that the leachant has a significant effect on the leaching of the rutile ore. However, the fraction of the ore dissolved was moderate.

Leaching of ilmenite ores by acidic chloride solutions ...

The leach residue containing mainly unleached rutile and pseudorutile can be used as a feed for synthetic rutile production. Highlights HCl leaching of ilmenite ore was found to be very effective in high chloride solution. Optimised leaching were at 5-7.5 M HCl with a total Cl of 500g/L, 3.3% pd, 70°C, 4-6h. Ti and Fe leaching were ~99% and 96 ...

Rutile Ore Titanium Flotation | Mineral Processing Methods ...

Rutile is a good conductor of electricity, the resistance is only 102 – 10 Ω m, while the minerals such as silicate and zircon are non-conductors with a resistance of more than 1 000 Ω m. The most frequently used electrostatic separators are YD series high-pressure electrostatic mineral separator and HDX-1500 plate electrostatic separator.

Intensification of Sulfuric Acid Leaching of Altered ...

A new method of altered ilmenite processing has been studied. In this method, sulfuric acid is used as the reaction medium of the process, and fluoride ions are activators of the dissolving process of the rutile part of the ore raw material. The regression model of the sulfate–fluoride leaching process was developed and analyzed by using the response surface method of 23 matrix.

(PDF) Dissolution Kinetics and Leaching of Rutile Ore in ...

The leaching of rutile ore by hydr ochloric acid may be written as: TiO 2 + 4HCl TiCl 4 + 2H 2 O (1) For this study and for better unde rstanding of the leac hing mechanism, two established Kinetic

Mechanism, Thermodynamics and Kinetics of Rutile Leaching ...

state in ore rocks. The rutile content can exceed 65 wt% in altered ilmenites. It was experimentally proved that the leaching degree of titanium from altered ilmenites barely reaches 15% with a leaching process duration of 5 h, even when 90 95% sulfuric acid solutions are used [29]. Leaching with sulfuric

Up-grading of natural ilmenite ore by combining oxidation ...

Rutile (TiO2) is heavily used in pigments and colorants, and the most abundant source of rutile is ilmenite. Upon oxidation of ilmenite, rutile can be formed with modest energy consumption; furthermore, after leaching, only a few byproducts are formed. Unfortunately, one drawback is the necessarily long oxidative process of typically used methods. In this study, we show that a fluidized …