EXPLORING THE POSSIBILITY OF SULFUR DE-CONCENTRATE, POLYGENIC
GOL GOHAR MINING AND INDUSTRIAL CO, BY ROASTING METHOD
ABSTRACT
Gol Gohar mining & industrial complex with more than 1.3 billion tons of Iron ore in Iran, Kerman province and
Southwest of the city of Sirjan, is located in metamorphic complex of Gol Gohar. Because of the old geological age
and multiple structural events, the genesis of the deposit is the supposed to be polygenic. Due to increasing depth of
mine, the processing rheology of this Iron ore has been changed a lot and the following of in mineralogical
composition. Magnetite is the most economic mineral in this deposit and the waste mineral include sulfides such as:
Pyrite, Pyrrhotite, Chalcopyrite and etc. The produced concentrate of beneficiation plant has grade of Fe = 66.7 and
S = 1.7 and is difficult to present to steel industry raw material market. Considering the complexity in mineralogy,
using of the roasting technology in likely to be one of the immediate solutions to reduction the involved effect of high
grade of ‘S’ in concentrate. less the 3 minutes in the lab scale and less the 17 minutes in the pilot scale roasting in
rotary kiln test and in temperature of 500 °C was provide to be sufficient time for reaching sulphur content of 0.2% in
roasted product. In addition to 68.38 of Fe content, lower particle size distribution. More grain ability and considerable
decries is Chlorine content have been the positive effects of roasting and finally high grade concentrate would be result
in to easily vendible in the market.
KEYWORDS
Gol Gohar deposit, concentrate, Iron ore, roasting, polygenic.