SU405655A1 - MAGNESIUM REFINING MIXER - Google Patents

Description

A known mixer for refining continuous magnesium, including settling chambers, in one of which a partition not reaching the bottom is fixed, and an outlet for outflow and magnesium is made on the wall separating the chambers.

However, the laboriousness of sludge removal is noted, and the efficiency of magnesium refining is not high enough.

The purpose of the invention is to increase the efficiency of refining, to facilitate the collection and removal of sludge. This pell is achieved by the fact that the opening in the wall dividing the chamber is made above the lower rim of the partition, and the lower parts of the walls of the chambers are made with a slope to its center.

FIG. 1 shows the proposed mixer, a longitudinal section; in fig. 2 - the same cross section.

The mixer consists of a steel casing / lined with fireclay brick 2 and graphite blocks 5 to exclude contamination with magnesium.

The mixer is divided by the graphite wall 4 into two chambers 5 for settling impurities.

In the first chamber, the partition 6 is reinforced, not reaching the bottom to form a salt gate.

In wall 4, a hole 7 is made above the nile of the end of the partition b.

The lower portions of the walls of the S chambers are made with a slope of 45 ° to the center of the chamber (studies have shown that the natural slit angle on graphite is 38-45 °).

The bottom side of the mixer bottom is made with a channel 9 in which the heating elements 10 are placed.

The mixer is provided with an Lid, on which tubular heaters 12 are fastened, fittings for loading the draft magnesium, and removing the purified magnesium and sludge, respectively.

Tests of the proposed mixer show that it can work well without channel heating.

Works mixer as follows.

A salt melt consisting of a mixture of chlorides and fluorides of alkali and alkaline earth metals is poured into the first chamber. The melt is poured above the lower end of the septum 4, then rough magnesium is continuously poured through the fitting 3, which is bubbled through the salt plug, refined from oxides and nitrides, collected on the surface of the salt and removed through fitting 14. The impurities of the magnesium are moistened with salt, deposited on

the bottom and periodically removed through the nozzle 15.

Subject invention

A continuous refining mixer for magnesium, comprising settling chambers, with ia a wall dividing the chambers, an outflow opening is made

magnesium, and in one of the chambers, a partition is strengthened, which does not reach the bottom, characterized in that, in order to increase the efficiency of refining, facilitate the collection and removal of sludge, as well as prevent the formation of scaling, a hole in the wall separating the chamber, above the lower end of the septum, and the lower portions of the chamber walls are made with a slope to its center.

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