SU364687A1 - INSTALLATION FOR THE REFINEMENT OF LIQUID METAL - Google Patents

Description

one

The invention relates to metallurgy, in particular to the field of production of high-quality metals and alloys.

A known installation for mixing liquid metal, which consists of a lined chute having a pouring hole and a metal tapping hole; a vertical pair of autonomous open magnetic cores made with double branching, one of which is located under the bottom, and the other on top of the gutter, and a pair of horizontal autonomous open magnitprovodov.

The described apparatus for refining liquid metal differs from that in order to separate the metal from the slag of pepsomenerino in the chute, the latter is equipped with an additional two diametrically opposed in the vertical direction of the W-shaped magnetic cores, the coils of which are connected to a current source with a phase shift of 90 °.

FIG. Figure 1 shows a schematic of an installation for refining liquid metals; in fig. 2 is a section along A-A in FIG. one; in fig. 3 is a section along BB in FIG. one.

The installation consists of a lined groove /, surrounding in the area of metal mixing and slag by four magnetic cores 2, 3, 4, VI 5, and in the area of slag separation

and metal two W-shaped magprovodami 6 and 7.

Chute 1 has an opening 8 for pouring liquid metal, an opening 9 for releasing

cleaned metal; and a hole 10 for tapping.

The installation works as follows. The metal to be processed is poured into the trench / from the ladle, additives and slags are added from the bunker simultaneously. The magnetic cores 2, 3, 4 and 5 are turned on. The arising electromagnetic forces intensively mix the metal along two oppositely directed screw paths, due to which the additives and slags are captured inside the mass of the melt, reacting with impurities, forming low-melting compounds. The melt under the action of electromagnetic forces moves along the axis of the chute and hits

into the action area of the separator. The separator coils are turned on, imposing two electromagnetic fields on the melt, displaced in space by 180 °, and in 90 ° time. These floors, by acting together with induced currents in the melt with currents, create a mechanical gap, which acts continuously in time from top to bottom.

Under the action of this force, there is a nourishing separation of melt fractions according to

specific gravities: slag accumulates in the upper part of the melt, and the lower layers contain purified metal.

The length of the gutter is chosen so that at a given flow rate of the rasilaw on its throat, the metal will be freed from slag by the lattice. At the end of the gutter, two outlets are made according to the levels of slag and clean; eta.; La.

Changing the magnitude of the currents in the coils of the non-mixer and the separator can be done, the optimal mode of operation of the plant for various melts, obtaining a continuous process of cleaning the metal with high performance and quality of cleaning.

PREMLETSKO and about o

A lining unit for refining liquid metal, consisting of a groove surrounded by four open-circuited electromagnetic fluids of the electromagnetic fluid, its system, and a current source, which is different in that it is designed to improve the separation of the metal from the slag directly in the groove. vertical direction W-shaped magnetic circuits, the coils of which are connected to a current source with a phase shift of 90 °.

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