SU1259086A1 - Salt heating furnace - Google Patents

Description

The invention relates to non-ferrous metallurgy, specifically to the construction of salt-heated furnaces for melting solid materials, and can be used for melting light alloy scrap and salt-burning furnaces.

The aim of the invention is to increase the service life of the furnace during the melting of the solid charge.

Electrodes are laid with the possibility of | about 650-660 ° C. The electrodes are fed in a longitudinal movement in the channels, a strand, the current passes through the melt

formed by electrically insulating heats it and being in rasterial. Channels are excellent, for example, melt scrap. As heating magnesium

fluoroflogopite or nylon and asbestos alloys melt and float, t

that, for the purpose of additional sealing, the 15th scrap components are lowered

channel and convenient pairing of his hearth. Liquid metal is chosen and with lining the channel is made in a layer of concrete with a thickness of 1.5-3.0 electrode thicknesses, and the concrete is isolated from the lining and the scrap load is again loaded. 5–10 melts are produced per day, and the melt temperature changes as much as 20, the steel electrode 20 having a higher temperature coefficient of expansion compared with the material of the channel, concrete, lining, slides along the internal surface of the channel.

ki for example diabase

a layer of concrete with a thickness of less than 1.5 thick- 1Pe1 electrode is ineffective, and over 3.0 thickness of the electrode the rigidity of the lining is broken,

The drawing shows the side wall of the furnace with a built-in electrode, a cut,

The furnace contains lining 1, electrode 2, channel 3 of electrical insulation

Editor And, Shulla Order 5111/38

Compiled by ..

Tehred L. Serdyukova Proofreader A. Tsko

Circulation 561 Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raugaska nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

material, layer 4 concrete and diabase tile 5.

The furnace works as follows. In the furnace, there is a melt of magnesium, barium, sodium, and potassium chlorides, into which solid metallic magnesium scrap is loaded at a melt temperature of 700-720 ° G. After the scrap is loaded, the melt temperature decreases to

on the hearth. Liquid metal is chosen and

reload scrap batch. In a day, 5-10 heats are made and the temperature of the melt changes as much. The Steel Electrode, having a higher temperature coefficient of expansion compared with the material of the channel, concrete, lining, slides along the internal surface of the channel.

The proposed device allows to significantly increase the lining durability, and the service life of the furnace increases by 3-4 months.

Claims (3)

1. SALT HEATED FURNACE, including a lined casing, overlapping and electrodes mounted in the lining from top to bottom, characterized in that, in order to increase the service life of the furnace when melting a solid charge, the lining is made with channels of electrical insulating material, in which with the possibility of longitudinal movement are the electrodes. 2. Oven pop. 1, characterized in that the channels are made of fluorophlogopite or nylon and asbestos. 3. The furnace according to paragraphs. 1 and 2, with respect to the fact that the lining is made with a layer of concrete and a layer of diabase tile located between the materials of the channel and the lining. ί