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In earlier mechanized opencast mines, processing concerned was crushing to needed size and separation of assorted merchandise by dry screening. With the increasing stress on cleaner product, wet screening has are available in vogue in place of dry screening. Little capability crushers have currently given place to massive capability crushers with improved reduction ratio. From jaw crushing equipment, mine operations have move to gyratory and cone type crushers where closely sized materials are needed. Since steel plants are switching over to sinter, iron ore fines are currently finding market and full recovery of those fines, classifying machines, hydro cyclones and filters are increasingly used. For getting iron ore concentrates from low grade ore.

The final purpose and task of ore dressing is to separate the ores from the useless gangue minerals, separate and collect the symbiotic valuable minerals to sole concentrate, recover the valuable element comprehensively, eliminate the impurities doing harm to metallurgy or other process, improve the quality of ore dressing product, in order to reach the object of making use of mineral resources more sufficiently, reasonably and economically.

The production of ore dressing is a complex process, with the transition and transformation of substance and energy. It has the characteristics of time-variation, large lag, complex mechanism and lots of affecting factors, with the performance of consecution in large range, nonlinearity and tight coupling, which is complex and indeterminate.

The product process of raw ores is to sieve the raw ores to the ore fines of 0 to 15mm and ore lumps of over 15mm. the ore fines are sent to the strong magnetic cylindrical ore storage bin by the belt conveyor as the materials of the product of strong magnetic separation. The ore lumps are sent to the bunker in front of the furnace through two-times screening by the belt conveyor as the materials of the roaster. To a service-oriented brand integrity,As the professional manufacturer of complete sets of mining machiner

The process of roast working of the shaft furnace is to send the ores to the shaft furnace to be roasted, which can separate the ores to the waste rocks and valuable ores. The waste rocks are sent to the hillock by the belt conveyor and the winching system, while the valuable ores are sent to the weak magnetic cylindrical ores bin as the product of the materials of weak magnetic separation.

The working process of ore grinding and magnetic separation can be divided into the strong magnetic separation and weak magnetic separation. The primary of the ore grinding system is a closed circuit made by the ball mill and the separator, while the secondary is a closed circuit consisting by the ball mill and the water cyclone.

To be highly efficient broken, in the large-scale plant the general election coarse, medium and fine three broken (also adopted four paragraphs), the lump ore gradually reduced to the size of 8-25 mm around, and then sent to the abrasive grinding machine. Until useful mineral particles to achieve separation of the monomers. At present, the ore crushing and grinding method primarily with the role of institutions of the more common mechanical force generally have the following five.