Abstract: Equipment for the treatment of a liquid such as a metal melt has one or more rotors (5) for the supply of gas and/or particulate material to the liquid in a reaction chamber (1). The reaction chamber (1) is closed and has an inlet (3) and an outlet (13) and is designed to be placed under a vacuum. The outlet (13) communicates with another chamber or outlet passage (2). The equipment may have several reaction chambers (1, 2) arranged in series. The first reaction chamber (1) then communicates with the second reaction chamber (2), the second reaction chamber with a third, etc. via an opening (16).

Abstract: The apparatus includes an upper metal reservoir (10), a casting mold (2) having an inlet and an outlet, and a vertically moveable base (7) positioned at the outlet with a casting shoe or bottom block (5) which is designed to bear against the outlet at the start of a casting cycle. The casting shoe is mounted as a moveable shoe on the base (7) and is designed to be locked by the direct engagement with the base when it has been brought into a centered position in relation to the casting mold (2). Furthermore, centering devices (3, 4, 8) for the casting mold and the casting shoe are provided thereon for centering the casting shoe in relation to the casting mold.