SU937937A1 - Ore smelting furnace - Google Patents

Description

(54) ORE-THERMAL ELECTRIC OVEN

one

The invention relates to ferrous for ferrous and nonferrous metallurgy, chemistry, in particular, to the design of electric furnaces for the production of silicon, manganese, chromium and their alloys, carbide, calcium, etc.

Electric furnaces are known that contain a lined body, a carbon hearth and three or six round or in the same number of rectangular electrodes located in the working space with a distance of 2.2-3.5 of the reduced diameters of the electrodes 1 between their axes.

The disadvantage of such furnaces is the low operating voltage, due to the physicochemical properties of the charge materials, which does not allow for the efficient use of the power of electric furnaces.

The closest technical solution to the proposed 20m is an ore-thermal electric furnace including a lined case, a carbon subtype and installed in a row of electrodes, decay

between the axes of which is 3.51 O, O are diameter electrodes.

That is. the location of the electrodes made it possible to increase the tension on them by 1.171, 3 times 2.

However, with an increase in the capacity of the furnaces, it turned out to be insufficient; therefore, the increase in power is achieved by increasing the current loads, which reduces the cos - transformers of the furnace, and consequently, the active power, leads to a deterioration of technical and economic indicators.

The purpose of the invention is to increase the operating voltage and active power.

The goal is achieved by the fact that in a ore-smelting furnace containing a lined body, a carbon hearth and electrodes arranged in a row with a distance between the axes of 3.5-10.0, you bring the l-electrodes lined to t p. in terms of (comb jurme)

by hollow 3-bYa, IOO .- (. ii

Claims (3)

Koy shch:) ichyom electro; 1y r. assichkhks.mi; i gulost x aub'ev comb; 1pedusmotvnyi options for placing in each hollow tooth comb on one electrode, and in the presence of electrodes in the number, multiple of six, in the extreme teeth x are located on one electrode, and in the other teeth x - two. In this case, the electric furnace is equipped with partitions installed inside the hollow lath equidistant from the axes of the electrodes. In addition, it is equipped with diggers, mounted in each tooth of the comb, with a fuck, the large axes of the digger are perpendicular to the longitudinal axis of the staff. FIG. 1 shows a furnace with one electrode in each tooth, plan view; in fig. 2 - vertical section of the tooth comb with an electrode; in fig. 3 - vertical section of the tooth comb with an electrode and Koshny; in fig. 4 - oven with a combination of two electrodes in the middle teeth x, plan view; in fig. 5 is a vertical incision of a tooth with two electrodes and one accumulator under it. The furnace furnace 1 is made in the form of a comb 2, inside of the teeth of which 3 there are round or rectangular electrodes 1-U1. The tooth is connected by a hollow rail 4. Between the cores there is a gap 5, Depending on the location of the furnace transformer relative to the furnace, the tap holes 6 are located either on the side of the hollow rack or on the opposite side. A variant of installation in the boot rail 4 is provided. It is also 15) there is a variant of the location in each hollow tooth 3 of the stopper & D, 9 and the cooler 10. It is understood that either all the electrodes are located in the stove or there are none. The furnace works as follows. The electrodes are supplied electrically with a current, which is closed through the bottom 9 and through the metal located on the base of the furnace. At the start of the furnace, the teeth and the hollow rail are filled with carbonaceous material. In the working mode, the furnace is fed with a mixture and lifted up. The metal to the slag is released through the lungs. 6. In order to increase the mash during the operation of the furnace, it is possible to load a hollow batt of carbonaceous into the hollow rail. The number of electrodes can be two, three, six multiple of six. Increasing the size of the proposed device is achieved due to the fact that the overwhelming part of the side surfaces of the electrodes and their mental support to the hearth is insulated from adjacent electrodes by the laying of the stove. The application of the invention will allow to increase the working threshold by 1.5 times, by another 10% it will increase when the partition is installed in a hollow rail, and the installation of a pigment cabinet for a number of alloys allows you to increase the working voltage up to 2.7 times compared to the known one. COS V is proportionally increased and the furnace power is active. The choice of options for the proposed solution: a device without a pigmer is advisable, for example, in the production of ferromanganese, when the role of the depositor is not sufficient or in the difficulties of installing them; doubling the number of electrodes in a separate tooth is most effective when the number of electrodes is a multiple of six, which will reduce the length of the furnace by -22%; The device of a partition in a hollow rod is advisable for the formation of slags with high electrical conductivity and low viscosity. The application of the invention allows to reduce electrical losses, improve the productivity of the furnace. Claim 1, Ore-heat electric furnace comprising a lined body, a carbon hearth and electrodes arranged in a row with a distance between their axes of 3.5-1 O, 0 times the diameter of the electrodes, so as to increase the working and & The power unit, the lined casing is made in terms of f (a comb with hollow teeth, a hollow lath, fuse, electrodes are located in the cavities of the comb teeth, 2. The electric furnace according to claim 1, is distinguished by the fact that one electrode is located in the cavity of the teeth. 3. Electric furnace according to claim 1, characterized in that in the extreme teeth x there is one electrode, and in the remaining teeth x x- two, 4, Electric furnace up to paragraphs. 1-3, that is, the fact that it is equipped with partitions installed inside the hollow rail equidistant from the axes of the electrodes. 5. Electric oven on PP. 1-3, characterized in that it is provided with accumulators installed in each tooth of the comb, and the major axes of the koshishnik are perpendicular to the longitudinal axis of the slats. Sources of information taken into account in the examination S “7, 9 7 1. Mikulinsky A. S. Ore electrothermal processes. M., Metallurgists, 1966, p. 82, 93. 2. Mikulinsky A. S. et al. The effect of the decay of electrons on the electrical resistance of the bath. - Steel number Yu, p. 761-762.