SU43096A1 - Electric resistance furnace - Google Patents

Description

In the proposed electrical resistance furnace, intended primarily for treating magnesium chloride and in which the coke layer and the current-carrying carbon electrodes are located under the heated charge, the receiver for the melt is separated from the electrodes with chamotte or other gas-resistant material to protect the electrodes from the effects of gases.

In FIG. 1 shows a vertical section of an electric resistance furnace according to AB of FIG. 2; FIG. 2- its top view; FIG. 3-horizontal section along the CD of FIG. one.

The furnace, which is primarily intended to produce anhydrous magnesium chloride, has an almost cubic shape. The walls and the bottom of the kiln are lined with ordinary chamotte bricks and the vault of the kiln is lined with chamotte shaped stones, but it can also be made of ordinary bricks. At the bottom of the furnace are two electrodes 7, each consisting of separate blocks. The current is supplied to them in the usual manner. Along the sides of the electrodes 7, facing the inside of the furnace to the melt receiver 6, there are solid walls 2 of chamotte plate or other gas-resistant material. The plates are tightly adjacent to the electrodes and protect them from contact with the furnace gases. On the wall 2 laid

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chamotte bars 5, between which the slits 4 are left, extending downwards. Stacked bars 3 resemble grate in conventional furnaces. On top of the electrodes and grates, a layer of coke is poured through the loading openings, about 20 cm, through which current flows from one electrode to another. A layer of charge of about 40 cm is poured onto the coke layer.

The furnace is designed to conduct a process in which chemical reactions take place between the solid and gaseous phases at high temperatures and the result of which are melting substances.

The gas supplied to the reaction is supplied through one or two tubes 5 leading under the grate. Through the slits 4 in the grate gas is distributed throughout the furnace, uniformly penetrating the layer of coke and charge. The resulting product melt flows into the receiver 6 through the same gap in the grate. On the electrodes, due to the barrier formed by the wall 2, a layer of melt about 50 mm thick is retained to prevent the electrodes from coming into contact with the gases of the furnace.

The subject matter of the invention.

An electric resistance furnace, mainly for treating chlorine magnesium, in which the coke layers and the current-carrying carbon electrodes are located under the heated charge, characterized in that, in order to protect

electrodes from the action of gases, the electrodes are separated from the receiver for melting by chamotte walls or walls of another gas-resistant material.

FIG.