Dey, Shobhana and Pani, Santosh and Mohanta, M K and Singh, Ratnakar (2012) Utilization of Iron Ore Slimes: A Future Prospective. Separation Science and Technology, 47 (5). pp. 769-776.
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In India, iron ores processing industries play a vital role in the Indian economy. During the washing and processing of iron ores, slimes less than 0.15 mm are generated and discarded into the tailing pond. These slimes need processing as they cannot be used directly in blast furnaces. In the present investigation, a typical iron ore slime sample containing 59.22% Fe, 4.76% SiO2, and 4.57% Al2O3 was taken. The desliming operation was carried out by using 2’’ Mozley hydrocyclone. The process variables used to attain the optimum condition of desliming include the spigot opening, the feed pressure, and the diameter of the vortex ﬁnder maintaining the pulp density at 10% solid. The deslimed sample was treated by different techniques including an enhanced gravity separator to achieve iron concentrate with 65% Fe so that it can be used for steel making through pelletization. The yield of the magnetic concentrate is about 46.8% with 65% Fe. To improve the yield, the overﬂow from 2’’ hydrocyclone and the rejects from magnetic separation were deslimed and processed to recover the iron values. The ﬁnal concentrate is 74% yield with 64.8% Fe, 1.76% SiO2, and 1.8% Al2O3
|Uncontrolled Keywords:||desliming; enhanced gravity separator; hydrocycloning; iron ore slimes; reverse ﬂotation|
|Deposited By:||Dr. Shobhana Dey|
|Deposited On:||23 Apr 2012 14:36|
|Last Modified:||30 Apr 2012 15:08|
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