Application of High Intensity Magnetic Separator in Ore Dressing Plant-I

Iron ore is an important raw material of steel making. Furthermore, it is a type of non-renewable resources. With the development of the social economy, demands for steel are growing day by day. Hence, demands for iron ore are growing, too. How to improve the recovery rate of powdered iron? How to reduce the loss of powdered iron in the production process? How to reduce production cost? All above is what the iron ore production company shall attach great importance to.

Flow chart of iron ore dressing plant:
1.    The iron ore are fed into the primary ball mill by electric vibrating feeder, the powdered iron from the primary ball mill will be classified by the classifier, and the unqualified powder will be conveyed back to the primary ball mill for re-grinding. The qualified powder will flow to the first magnetic separator from the overflow weir.
2.    Iron powder from the primary ball mill will go through the first magnetic separator and second magnetic separator, and then go into the secondary ball mill for find grinding. Later, the find grinded iron powder will be conveyed into the third magnetic separator. Then, the concentrate will be pump into the high frequency vibrating screen by slurry pump. Product on the sieve shall be conveyed back to the second magnetic separator and secondary ball mill for re-grinding, while product under the sieve go through the classificatory, the forth magnetic separator and the fifth separator. After filtering out the water, powdered Iron is produced.
 
From the sample test, we find that, the grinding efficiency of secondary ball mill is relatively low. The main reason is that, the grinding density of the secondary ball mill is relatively low. In this way, the iron ore cannot be grinded effectively by the steel ball.

Hence, engineer from our company decided to use High Intensity Magnetic Separator in Ore Dressing Plant instead of the secondary magnetic separator. More information about this solution, please wait for our new article.