bioleaching iron from ilmenite

A review on the recovery of titanium dioxide from Ilmenite , The preoxidised ilmenite was leached using hydrochloric acid and iron powder as leaching and reductive agent, respectivelyA test without iron powder was also conducted to determine the effect of .
Bioleaching of Ilmenite and Basalt in the Presence of Iron , The biological leaching experiments were conducted using Acidithiobacillus ferrooxidans, an iron (Fe)-oxidizing bacteria, and Pseudomonas mendocina, an Fe-scavenging bacteria We found that both strains were able to grow using the Fe(II) derived from the tested basaltic rocks and ilmenite
Bioleaching of Ilmenite and Basalt in the Presence of Iron , Blending of the basaltic rock with ilmenite to further stimulate the bacterial metabolisms by providing additional Fe(II) resulted in a slight increase in Si, Ca, and Al release rat For example, Si was released at an initial rate of 66e-12 mol/m2*s in the biotic experiments, while Si leached from the abiotic control at a rate of 40e-12mol .
Titanium and iron dissolutions from ilmenite by acid , Request PDF on ResearchGate | Titanium and iron dissolutions from ilmenite by acid leaching and microbiological oxidation techniques | This research was concerned with the solubility of ilmenite .
Sulfation Leaching Treatment ilmenite Concentrate Titanium , Ilmenite Concentrate The ilmenite concentrate used in the pilot plant studies was the same as that used in the laboratory studies (table 1) Equipment The electric arc furnace employed to carbothermically reduce Tahawus ilmenite to separate iron and prepare low-iron titanium slag was described in a previous Bureau publication
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
Ilmenite: An ore of titanium | Uses and Properties Ilmenite is a black iron-titanium oxide with a chemical composition of FeTiO 3 Ilmenite is the primary ore of titanium, a metal needed to make a variety of high-performance alloys Most of the ilmenite mined worldwide is used to manufacture titanium dioxide, TiO 2, an ,
extraction of pure titanium from ilmenite Titanium and iron dissolutions from ilmenite by acid leaching and May 3, 2012 The bioleaching experiments after 35 days gave the highest iron extraction of 045% in the presence of pure culture (A niger) and mixed culture (A niger and P citrinum), whereas the titanium dissolution was observed to be very low (
Bioleaching - Wikipedia Bioleaching of non-sulfidic ores such as pitchblende also uses ferric iron as an oxidant (eg, UO 2 + 2 Fe 3+ ==>UO 2 2+ + 2 Fe 2+) In this case, the sole purpose of the bacterial step is the regeneration of Fe 3+ Sulfidic iron ores can be added to speed up the process and provide a source of iron
Titanium and iron dissolutions from ilmenite by acid , May 04, 2012· Ilmenite concentrate was soluble in 15 M sulfuric acid and 15 M hydrochloric acid solutions at 90 °C However, improved leaching was obtained with 8 and 12 M sulfuric acid solutions The chemical leaching results for different stirring speeds showed that a speed of 750 rpm was favourable to iron and titanium dissolutions
Bioleaching of ilmenite and basalt in the presence of iron , Bioleaching of ilmenite and basalt in the presence of iron-oxidizing and iron-scavenging bacteria , Abstract Bioleaching has been suggested as an alternative to traditional mining techniques in extraterrestrial environments because it does not require extensive infrastructure and bulky hardware , ie Le Chatelier's principle Iron(II) in .