beneficiation process of iron ore

The final goal and task of ore beneficiation is to separate useful minerals and useless gangue minerals and integrate the useful minerals into independent concentrate, and this process can comprehensively recycle the valuable elements, remove the impurities harmful to the metallurgy and other processing processes and improve the quality of the dressed products to fully, reasonably and economically use the mineral resources.

The beneficiation process of iron ore is a complicated process with the transmission and exchange of materials and energy. Reasonable beneficiation process of iron ore should satisfy the following basic requirements: protect the iron ore and minimize its breakage rate, determine suitable ceiling and floor of beneficiation granularity and get the highest recovery and try to comprehensively recover the valuable minerals.

The beneficiation process of iron ore goes like this: The mined ores and rocks are primarily crushed by jaw crusher to the reasonable fineness, and then are sent by bucket elevator and ore feeding machine to ball mill for crushing and grinding. The fine rocks and ores ground by ball mill will go for classifying. The spiral classifier classifies the ore mixture according to the principle that solid particles with different proportions have different dropping speed in the liquid.

When the classified ore mixture goes through magnetic separator, the magnetic materials are separated by the magnetic force and mechanical force according to the magnetic susceptibility of various minerals, and then the magnetic separator will go through the bucket mixer. The separated materials often contain a lot of water, so that they must be concentrated by the ore concentrator, and then dried by the dryer machine, and finally dry minerals can be obtained.