About 5 million tones of hematite ore is beneficiation in India every year to recover good iron ore lumps and sinter able fines for blast furnace operation usual variation in beneficiation plants designed exist in crushing stages. Screening and type of classification etc. In iron mines the beneficiation process essentially consist of crushing the ROM ore, screening and classification to recover lumps (+10 mm) and fines (-10 + 0.2mm). The fines content amounts to about 35% with an average of 58% iron and they are usually identify in nature and mineralogical dominated by hematite and goethite containing over 8% alumina. Water used as the normal washing medium. The classification of BIM plant contains over 6% alumina which leads to high blast furnace i.e of the order of 21-26% thereby decreasing the productivity and increasing the coke rate1. Thus lowering of alumina content in iron ore fines continued to be challenging problem. I have to take up the present study further keeping in view that the Indian ore which are lateritic soft and friable in nature. Gangue minerals are loosely bound and therefore they may be easily liberated and dispersed as result of high turbulence prevailing in jig bid2. In the addition to the dispersion effect, the density difference between the alumina rich lateritic and alumina lean hematite fines could be taken advantage in the benification process using jig3.
Cite this article:
Deepak Dwivedi. Effect of Lignite, Phenol and Water Dispersant Additives on Jigging Of Iron Ore. Research J. Engineering and Tech. 2(2): April-June 2011 page 66-71.