Abstract: The apparatus for refining molten metals from insoluble impurities comprises a housing with a detachable base having an opening, a filtering device with a filtering member, mounted on the housing and operatively passing through the opening in the base, mechanisms for actuating the filtering member through rotation about its longitudinal axis and reciprocation along this axis, and a device for removing impurities from the apparatus. In accordance with the invention, a closed-loop trough is made in the detachable base around the opening for the passage of the filtering device, the device for removing impurities from the apparatus being accommodated within this trough.

Abstract: The apparatus comprises a housing, a filtering device, mechanisms for driving the filtering device, respectively, through rotation and reciprocation and a device for discharging impurities from the filtering device. The filtering device includes the top and bottom plates spaced from one another, the top plate being mounted on a hollow stem, and the bottom plate being mounted on another stem extending through the hollow one. In accordance with the invention, to adjust the spacing of the plates, the filtering device includes a resilient member supported by the stem extending through the hollow one and adapted to cooperate with the hollow stem so as to maintain the relative position of the plates. The end of the same stem extending through the hollow stem, remote from the bottom plate, carries a first abutment cooperating with the resilient member.

Abstract: The method provides for filtration in the field of centrifugal forces generated in a filter immersed into a layer of a melt to be refined, with the solid impurities accumulating in the filter being strained from the residual melt beyond the layer of the melt to be refined.