The Energy Saving Technology of Beneficiation of Iron Ore

V. V. Karmazin, M. A. Bikbov, A. A. Bikbov
2002 Magnetic and Electrical Separation  
The qualitative and quantitative evaluation of liberation of economic minerals and the level of contamination of the process products by waste components were carried out for the purpose of analysing the technology level and forecast its development directions. Concentration of intergrown particles into a separate product for the purpose of subsequent more efficient and selective liberation is one of the reserves for energy saving in the grinding operations. A pilot selective separator was
more » ... separator was tested in re-cleaning operations to compare with a standard (conventional) separator. The tests that showed, that a separator with a pulsed magnetic field is an efficient device that allows the realization of an intensive concentration of a large amount of unliberated magnetic particles consisting of two phases value minerals and gangue, into several products. total cost [1]. Specific energy consumption of various mechanical disintegration stages is as follows: Coarse crushing 0.3-0.5%; Middling crushing 0.8-1.2%; Coarse and fine grinding-18-20%; Ultrafine grinding-50% and more [2] . Distribution of power consumption among the process needs is illustrated in Fig. 1. According to the data of numerous publications [3-6], disadvantages of presently used techniques (high energy and water consumption and the decreasing grade of the iron ore concentrates) result from low
doi:10.1080/1055691021000062813 fatcat:xxce3o6yfravvn734hnmskc3hi