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Paper Information

Title: 

UPGRADING OF ILMENITE CONCENTRATE FROM UROMIEH QARA AGHAJ BY SMELTING

Type: PAPER
Author(s): IRANNEZHAD M.*,MONTAJAM M.
 
 *DEPARTMENT OF MINING, METALLURGICAL & PETROLEUM ENGINEERING AMIRKABIR UNIVERSITY OF TECHNOLOGY, 424, HAFEZ AVE. ,TEHRAN, 15914, IRAN
 
Name of Seminar: PROCEEDING OF IRANIAN MINING ENGINEERING CONFERENCE
Type of Seminar:  CONFERENCE
Sponsor:  IRANIAN SOCIETY OF MINING ENGINEERING
Date:  2005Volume 1
 
 
Abstract: 

Titanium occurs in two mineralogical forms of commercial importance-ilmenite and rutile. Ilmenite which is substantially ferrous titanate (FeTiO3), relatively abundant, has a theoretical titanium dioxide content of 52.7 per cent but commercial grade may contain from as little as 35 percent titanium dioxide to as much as 65 per cent. One of the most important ilmenite upgrading processes developed so far is smelting of ilmenite concentrate for production of a slag rich in titanium oxides and a pig iron.
he raw material studied was ilmenite concentrate with 44.5 per cent titanium dioxide, provided from Qara-Aghaj titanium rock deposit located at Uromieh ,Iran, containing ilmenite as a valuable mineral with average grade of 8.5% TiO2 and 209 Mt of estimated reserve. The effects of kinds and quantities of fluxes, the rate of heating temperature of melting were studied. sodium carbonate with a 5% wt as a flux were used. melting temperature of 1300-1600oC at a ramping rate of 50oC/min were used. The melting time were 1 hours respectively. A slag containing more than 77% titanium dioxide can be recovered. After acid leaching on the slag a synthetic rutile containing more than 90 % TiO2 was obtained.

 
Keyword(s): ILMENITE, UPGRADING, SLAGGING, REDUCTION, PREOXIDATION
 
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