SU407958A1 - METHOD OF PROCESSING METAL SLAG IN VACUUM - Google Patents

Description

one

The invention relates to the secondary treatment of a liquid metal.

The known method of vacuum-slag metal processing, which consists in the fact that the metal enters the vacuum chamber from above, and the slag - from below through one metal conduit. The mixture of metal and slag is drained through another metal conduit.

The aim of the invention is to ensure efficient s. Mixing of metal with slag and control of the degree of their mixing. This is achieved by introducing the metal and slag into the vacuum chamber (reaction vessel) from the atmosphere or from a container with adjustable pressure over the melts so that the flows of metal and slag are directed in the vacuum chamber towards each other or at such an angle Provides the best conditions for mixing them at the meeting.

The drawing shows the scheme of drying, the proposed method.

In the vacuum chamber 1, the required vacuum is created, after which metal and slag are supplied from tanks 2 and 3 to melt pipes 4 and 5. When melts get into vacuum, the jets disperse and, as they are directed towards each other or under the required angle, additionally fractioned into smaller droplets when struck against each other. When this occurs, the metal and the slag are effectively mixed, the process of metal refining by slag is intensified, and favorable conditions are created for a more complete evacuation.

metal. In order to increase the kinematic energy of the jets, pressure is applied on their surface in tanks 2 and 3 or on one of them. Regulating the applied pressure in any required limits (for example, from 0.1

up to 10 atm), controls the degree of mixing of the interacting phases and, consequently, the quality of refining. The metal and slag after the meeting and the interaction in the form of an emulsion enter the receiver 6, where the separation of these phases occurs due to different density, during which the additional refining of the metal is carried out. After that, they are taken from the tank 6 and are served either for further processing or for direct use as intended.

The method can be used both in continuous and cyclic metal production processes and is applicable in metallurgical and foundry shops to improve the quality of metals and alloys.

Subject invention

L. Method of metal processing slag in vacuum, including the supply of slag separately

and a metal in a vacuum chamber, characterized in that, in order to ensure effective mixing of the metal with the slag, the metal and slag are fed into the vacuum chamber simultaneously towards each other. .2. The method according to claim 1, of tl and h and w w, and with that

that, in order to regulate the degree of mixing of the metal with the slag in the vacuum chamber, an adjustable pressure is applied on the surface of the supplied metal and slag melts or on one of them.