METHOD OF METAL MELT MIXING AND ELECTROMAGNETIC MIXER FOR ITS IMPLEMENTATION (VERSIONS) Russian patent published in 2019 - IPC F27D27/00 B22D11/115 H05B6/34 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy and electrical engineering, particularly to devices for mixing metal melts. In method current phases are set to connected coil groups so that pole division of inductor according to magnetomotive force of coil groups corresponds to (0.7–2.2)∙Δ∙π, total width of phase zones of coil groups by magnetic flux is equal to 400°el, and active length of inductor accounted for fractional or odd number of pairs of magnetic poles of inductor, but not more than 2. In the electromagnetic mixer, the number of turns of the extreme coil groups is greater than the number of coils of the central coil group, the central coil group is inverted relative to the outermost coil groups owing to direction of winding or connection, and the coil groups are connected according to the "star" or "triangle" scheme and connected to the middle points of the three power source inverter power supply power pairs, or the outermost coil groups are connected in series and in the opposite direction, wherein number of coils of extreme coil groups is less than or equal to number of coils of central coil groups, and along core length even coil groups are inverted relative to odd coil groups due to direction of coiling or connection circuit.

EFFECT: inventions allow optimizing winding data at a given value of working gap Δ between inductor and surface of mixed metal melt, as well as the possibility of using semiconductor power sources with three pairs of power semiconductor switches of the inverter and, consequently, improving mixing efficiency at the lowest power inputs, low weight of the inductor of the electromagnetic mixer and its overall dimensions.

33 cl, 30 dwg, 2 tbl