SU112420A1 - Multichamber melting furnace - Google Patents

Description

The existing method of refining magnesium powder in gravity resistance furnaces has significant drawbacks, due to the cyclical nature of production, low capacity and productivity of the apparatus.

At the same time, the process of refining is very laborious and requires a significant amount of staff and transport operations.

The subject matter of the present invention is a continuous chamber furnace design for refining raw magnesium, free from the above disadvantages.

The chamber furnace consists of several interconnected chambers, which are cascaded relative to each other. Each chamber is a bath lined with a refractory material, non-self-supporting with magnesium, and divided by two partitions into three cells. The middle cell formed by these partitions is designed to receive metal, the extreme cells are filled with molten salt and are intended to create an electrical circuit.

The imp is a diagram of the device chamber chamber of the three chambers.

The first chamber 1 is a receiver of magnesium powder and, at the same time, it must consistently heat up the metal, refine it and then overheat. The second chamber 2 is intended for settling and cooling the refined magnesium. The third chamber 3 is a collection of refined magnesium, from where the latter is continuously discharged, for example, to a conveyor.

In each partition separating one chamber from another, the tube is sealed at a certain angle for periodically transferring magnesium from the previous chamber to the next.

The end wall of the first chamber is equipped with a device for pouring molten magnesium powder, and in the end stack of the trace chamber

No. 112420

A taphole with a float device 4 was sealed to automatically regulate the jet of poured refined magnesium.

Each chamber has on dg, and steel electrodes, KGTopjje are located in the extreme cells. An odiopha is supplied to the electrodes: the 1st current from the next transformer.

The principle of the chamber chamber is as follows.

The decomposed raw magnesium is poured into the middle cell of the first chamber and brought to the first refining temperature. The metal is agitated and heated to a temperature of 7-40-750 ° C in order to facilitate the separation of solid non-metallic or flux-like inclusions in the metal. After about: heating up the metal through the first tube of the first chamber is transferred by gravity to the second chamber, which is located below the first.

In the second chamber, the metal is cooled to the casting temperature of the metal, i.e., to 700 °, and evaporated to completely remove all solid impurities and iron precipitated from the metal.

In order to cool the metal in the middle cell of the chamber, an air cooling installation is provided.

After the end of the sludge, the metal is transferred by gravity into the third chamber, from where it is continuously fed to the conveyor. The chamber is supplied with a device that ensures a uniform outflow of the metal jet, regardless of its level in the chamber. A uniform discharge of the metal jet, necessary for the smooth operation of the casting conveyor, is achieved by maintaining a constant level of melt in an intermediate metal chamber equipped with a float.

The float chamber has a cork shutter with which the dispensing of the metal begins or stops.

In the chamber filled to the height of the metal, there is a float equipped with a needle entering the saddle. When changing the level of metal in the float, rising or lowering increases or decreases the flow of metal through the valve.

The metal is discharged through a regulating plug located in the bushing.

In order to avoid the burning of metal on the surface, the creation of a controlled atmosphere, F3, is envisaged. For this purpose, gaseous 50 is continuously supplied to the third chamber and passes through successive pipes to successively above the metal surface of the second and then the first chambers. At the outlet of the first chamber, the regulator maintains a slight overpressure in order to avoid air leaks.

Subject and d on and e and

Claims (2)

1. A multi-chamber continuous smelting furnace for refining and smelting magnesium, consisting of separate chambers interconnecting each other, characterized in that, in order to ensure the continuity of the process, the furnace has several chambers, each of which has one JLMH several operations technological process, depending on which separate chambers are supplied with an electrofogger by air-cooled ill. 2. The multi-chamber melting furnace according to claim 1, characterized in that, in order to ensure the transfer of metal from one chamber to another, the chambers are arranged in a cascade with a decrease in the level from the chamber first to the last.