Romanchenko Y. Polygradient electromagnetic separators with advanced structures of lamellar matrices

The dissertation is devoted to solving the actual scientific problem by determination of advanced structures of lamellar matrices of polygradient electromagnetic separators for the extraction of ferromagnetic particles from dispersed media using a combination of systemic methods of synthesis and analysis to increase the efficiency of removal of ferromagnetic impurities up to 1 mm. Structural-system researches of the functional class of magnetic separators received further development, which allowed to determine the boundaries of existence, the quantitative composition and genetic structure of types of polygradient magnetic separators. The inhomogeneity degree of the magnetic field and the spectrum of the force field in the plane of working areas of the synthesized structures were researched, which made it possible to determine rational structural variants of the matrices based on the effective area parameter of the working area. An improved design of a polygradient electromagnetic separator is proposed, which provides a more uniform distribution of local areass of high intensity and increased heterogeneity of the magnetic field in the working volume of the matrix. It has been established that when the shape of triangular plates changes to trapezoidal with a constant maximum magnetic field strength in the air gap, the effective area of the working area increases by almost 2 times. Key words: electromagnetic separator, polygradient matrix, working area, geometric criteria of similarity, boundary conditions, effective area.