SU423853A1 - INSTALLATION FOR TREATMENT OF LIQUID METALS - Google Patents

Description

one

The invention relates to the field of electrothermal equipment for the production of high-quality metals and alloys.

A known facility for refining liquid metal, consisting of a chamber surrounded by four open magnets, an electromagnetic stirring system and two H-shaped magnetic circuits of the separation system, diametrically opposed in the vertical direction and fed by alternating currents shifted in phase by 90 °. However, when the melt is stirred, tenla is intensely released into the external environment, as a result of which the melt often freezes, but the processing cycle does not pass.

A known plant for refining a liquid metal provides mixing of the metal with the slag and their subsequent separation, but does not solve the issue of heat loss.

The proposed plant for the treatment of liquid metals provides additional heating of the melt in the discharge zone, as well as a significant increase in the effect of separation of the metal from the spent slag. This is achieved by the fact that the chamber at the separation site is provided with an axial partition made of refractory material, inside of which there is a built-in magnetic core that connects

middle cores of the upper and lower electromagnets.

FIG. 1 shows an installation for treating liquid metals; in fig. 2 - the same, cuts along A - AU B - B in FIG. one.

The installation for treating liquid metals is a chamber 1 consisting of two sections — a mixing one and a separating one. In the separation area

its axis is a partition 2 of refractory material, inside which the core 3 is embedded, made of a package of electrical steel sheet. The core connects the middle cores of the 4 electromagnets of the separation system into one magnetic circuit. At the end of the chamber, in its end wall there are two openings at various levels closed by plugs 5 and 6.

From buckets 7 and 8, slag and metal are processed simultaneously into the chamber at the same time. Include power electromagnets mixing and separation systems. The melt, which flows through the chamber, mixes with the slag, reaches the section of the section, flows around the partition and, draining behind it, forms an electron-conducting coil, inside of which there is a magnetic core. Electromagnets of the separation system induce electrical current in this turn.

the current that warms the melt and the heat released compensates for the loss of melt in the chamber during its processing. In addition, the electrodipamic force, which presses the metal down, increases significantly, and therefore the separation effect is enhanced.

Preheating the metal and slag at the drain holes allows the metal to be treated with the slag for the required time without fear of hardening. After the treatment cycle is opened, the plugs are opened and the spent slag and the purified metal are drained into separate containers.

Subject and sb ip e te

An installation for treating liquid metals consisting of a chamber, mixing and separation systems, characterized in that, in order to prevent the melt from solidifying in the discharge zone and increasing the effect of separating the metal from the spent slag, the chamber in the separation section is provided with an axial partition of refractory material, inside which is embedded a magnetic core connecting the middle cores of the upper and lower electromagnets.

ig 1