Tank-casting mould of installation for receiving of ferrotitanium by means of electroarc melting of rutile under layer of protective flux

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy field, particularly to structure of tank- casting mould of electroslag installation for receiving of ferrotitanium. Tank- casting mould contains metallic square casing, in the basis of which it is hermetically installed stationary current-carrying electrode, between main, side walls and fixed current-carrying electrode there are installed plates, which formes fireproof brickwork of tank- casting mould and implemented as graphitic, herewith part of graphitic plates at side steel walls is held by means of top holding brackets and bottom holding brackets, and fireproof products, which are located under mentioned plates, are manufactured from chamotte, and to four side steel walls there are rigidly fixed four horizontally installed rotary loops, which provide lowering of side steel walls into horizontal position for free unloading of ferrotitanium in solid condition lengthwise side steel walls.

EFFECT: prompt unloading of cooled and crystallised ferrotitanium in solid condition, fast maintanance of damaged brickwork and structural elements of tank - casting mould for following repeated functional usage, and also averaging of chemical composition of received in tank - casting mold of ferrotitanium and increasing of its quality.

1 ex, 2 dwg

The invention relates to ferrous metallurgy, in particular to the construction of a bath-mould of an electric arc furnace, and can be used as one of the main components of the design of the facility to obtain ferrotitanium by electric arc melting of rutile under a layer of protective flux, which serves as an alloying component in the manufacture of structural grades of alloy steel, widely used in machinery, chemical industry, nuclear power.

For smelting of iron ores and non-ferrous alloys in industrial output more than a century and a half use furnace type shaft and the open-hearth furnace in which heat energy is released during the passage of chemical reactions interaction of oxide compounds of metals with a reducing agent, for example, consistent recovery of iron oxides by carbon:

Fe₂O₃→Fe₃O₄→FeO→Fe+Q,

where Q is the heat release, kJ. However, the use of such a furnace equipment in the chain of technological operations ore processing in pure metals and alloys, particularly in color, has a number of disadvantages: the need for preparatory processing of raw materials to the mixture to separate production from its technological equipment, large industrial space for the domain and Artemovsky furnaces, auxiliary production process liquids and gases, complex and widely branched powerful ventilation system connected to all the specified main and auxiliary production units and equipment, powerful transport system. These shortcomings have prompted researchers to use and improve the principle of heat release by means of an electric arc and on the basis of this principle to construct an electric arc furnace in which the ore mixture is subjected to simultaneous recovery and melting under the action of thermal energy. Industrial electric arc furnace in comparison with mine and open-hearth furnaces have considerably smaller dimensions, do not need complicated preparations and extensive ventilation and transport systems. Their production volumes (the volume of the working space) is limited only by the capacity of the power sources of the electric arc and the need in the volume of final product - ferrous and non-ferrous alloys.

30-40 years ago began active construction of electric arc furnaces. Known, for example, design of electric arc furnaces and their use by Author's certificates of the USSR №243640 publ. 13.01.1970, No. 320694, publ. 11.02.1970, U.S. patent 3 598 888, publ. 07.08.1971, PA is into Japan No. 50-14373, publ. 10.04.1975, A.S. No. 583176, publ. 05.12.1977. The use of electric arc furnaces for titanium alloys in the process carousel melting with a bottom drain is described in detail in the monograph "Andreev A.L. and other Melting and casting of titanium alloys. - M, metallurgy, 1994, s.226-230".

In General, electric arc furnace for melting, for example steel charge, structurally consists of a PLANO-cylindrical or oval tank for melting scrap or directly restored to the desired level of iron (sponge iron). Electric arc furnace load normally or when dropped the lid, or through a special hole in the lid. The charge is melted arcs of electrodes introduced into the furnace through the cover. Emptying the furnace is depending on its type through the discharge chute or located eccentric bottom tapping hole. Known electric arc furnace for direct and alternating current.

Electric arc furnace DC have prashadhey graphite and bottom electrodes. The arc that is formed between them, is directed vertically down onto the steel bath. Recently become known arc furnace DC with two graphite electrodes. Ie, construction of electric arc furnace consists of individual nodes steel capacity, which is similar to the e form called a bath or melting bath, and in some case, depending on the conditions for the appointment process of melting ingots called mold. The second node of the arc furnace electrodes, between which an electrical arc is formed, with the mechanism of the upper feed them into the melting bath-mould. The third node of the arc furnace is power supply current electrodes, and the fourth node - load tool of burden and ventilation of the working space - bath-mould.

The object of this invention is the construction of an electric arc furnace - bath-mould, in which the recovery process of oxide compounds of metals under the action of an electric arc between an electrode that is fed vertically from the top and fixed bottom electrode, which is mounted in under a bath of the mold, and the cooling and crystallization of the obtained melt is recovered metals or alloys.

The prior art document US 5479435 And 26.12.1995 "electric Arc furnace", in the description which outlines the design of an electric arc furnace direct current for melting metal scrap. This design includes oval steel tub for melting metal scrap, which is lined with refractory metal casing with monter who bathes in it under the electrode (in one constructive execution, when an electrical arc is formed between one specified upper and lower electrodes), the lid with two holes for arachodonic electrodes and boot square hole between them. When applying current to the electrodes formed between the electric arc melts the metal scrap, which is loaded from the top through the inlet opening and at the completion of melting steel tub rotates around a vertical axis located outside of the housing to the container in which a metallurgical vessel pour the molten alloy.

Similar to the same design from the prior art is document FR 2577311, A1, 14.08.1986 on the Device for insertion of the electrode in electric arc furnace under a constant current, the description and figures 1, 2 which presents the design of an electric arc furnace and devices the introduction of the electrode in the furnace bottom. Electric arc furnace includes a metallurgical vessel for melting the charge, which has a vertical cut in the tub, lined with refractory blocks, which is limited by a metal casing in the form of a cut from the bottom of the cone and the top of the cylinder. In the lowest place of the cut cone, which is wide basis goes up, inserted the bottom of the water-cooled electrode. Top in the bath serves two arachodonic electrode, which obrotowy who try to cross an electric arc with the lower electrode and melted to a liquid state metal-containing charge.

The disadvantages of the above construction of electric furnaces should include the fact that the melting process is the deviation of the electric arc from the straight direction between the electrodes, which causes a high thermal load on the refractory lining and, therefore, is needed to cover the surface of the melt metal scrap protective, for example, foamy slag. In addition, there is a frequent destruction of the electrodes due to the collapse of scrap as when additional load, and when it is incomplete melting and moving along a bath melt. There is also a high heat load on the electrodes in the zone of the furnace cover.

The prior art application EN, 2004106738, AND, on 10.09.2005 Melting furnace and method of melting metal in it", which describes an electric arc melting furnace for melting metals and alloys, which includes a bath, three electrodes, which are arranged spatially above the bath in a circle with a shift relative to each other, phases which are connected to the secondary windings of the power of three-phase transformer and the electrode, which is connected to the constant current source and is located in the axisymmetric region of the triangle, which is formed above three electrodes. The furnace also has a fourth electrode, which is located under the bath and connected to the second pole of the DC source. The melting of the metal-containing mixture is carried out by two groups of electrodes, which form an electric arc from three phase AC and DC single-phase current.

The disadvantages of the above structure are as follows: the intricate design of the electrodes and the formation of electric arcs from AC and DC currents, the need for precise load control from different power sources and, respectively, the complex spatial interactions between different electric arcs in the melt metallic material with its constant stirring. Entirely predictable and the negative impact of electric arcs when they are unbalanced location on refractories and metallurgical bath furnace and the need for constant repair its refractory lining.

Also the prior art document EN, 2179288, C2, 10.06.2001 on "electric Arc furnace", in which description and in Fig. 1-3 outlines the design of an electric arc furnace for melting various metal and non-metallic refractory materials. The furnace includes trapped in the body and lined with refractories rectangular melting chamber with a removable lid and holes for positioning one or two electrodes on the console that have the ability vertically and progressively move, p is d camera melting with the stationary electrode in the form of several rods, connected to a common electrical bus. The melting chamber has the form of a tunnel with a width of hearth 2-4 electrode diameter and has a bottom conclusion formed during arc melting of the melt material through the bottom tapped in the form of a confusor connected to the diffuser, and an additional tapped the side of the heat-resistant material, which consists of heat-resistant plates for flow of the melt and futerovannogo the refractories of the shutter, using the lever, raised on stage, has the ability to open and close.

The disadvantages of the described construction are as follows: the possibility of unloading of finished metal or non-metal melt through the bottom or additional lateral notches only in liquid form, the complexity of the design, which provides movement of the upper electrodes in the melting process, the impossibility of quick disassembly and repair of the melting chamber with the replacement of the damaged lining.

The prior art document US, 4982411, And, on 01.01.1991 "Dome electrode arc furnace DC, the description of which in figure 1-3 outlines the design of bottom electrode in an electric arc furnace direct current for melting metals, mainly steel. The furnace design DC includes the bath in the form of a cut cone facing up wide on the new and surrounded by a metal sheath of her body. Tub lined with refractory bricks, which forms a stepped space that extends up. In the lower part of the cut cone bath - pod mounted lower steel electrode in the form of a cylindrical rod with a diameter of 250 mm, the upper surface of which is flush with the lining of the hearth baths. From the sides of the lower electrode is compacted by ramming backfilling of magnesium oxide, which turns into layers composed of refractory bricks. The lower part of the bottom of the steel electrode is screwed into the refractory insert and bottom has forced water cooling and is connected to the electrical power supply.

The disadvantages of this design include: inability to quickly discharge the obtained molten metal in solid form, disassembly and repair of baths, lack of funds for transportation and replacement of bathtubs on the other, ready for further melting.

The closest, according to the applicant, is known from the prior art document US, 4829538 And 09.05.1989 on "electric Arc furnace", in which description and Figure 1-2 describes the design of an electric arc furnace DC, which includes concentrically located and such that has the ability to vertically descend into the working space of the furnace graphite prashadhey e is ctrad, which when the coil is energized forms an electric arc between its lower end and located in the hearth of the bath of metal or steel electrode. Electric arc furnace includes a rectangular in vertical and horizontal cross sections of the tank for melting metal or metal oxide which is a metal square case with walls. Wall and base casing lined with refractory layers of different (chemical composition) of the brick. The lower part of the body is the basis of and forms under the furnace. The internal volume of the basics of using refractory brick layers forming a stepped space in the form of a cut cone, which extends upward and has its level, the hole is tapped for draining liquid metal or alloy. In the lower part of the cut cone bath - pod mounted the lower electrode in the form of short rods of metal or steel, which are connected via a shared conductive bus. Refractory layers of the base and the furnace is made of brick layers, which are placed sequentially from the top to the bottom of the hull and consist of layers of brick magnesium oxide, layers of bricks from a mixture of magnesium oxide and chromium oxide layers of bricks from a mixture of magnesium oxide and graphite and a layer of compacted graphite mass.

The disadvantages of these designs include: the inability fast TP and the obtained molten metal in solid form in connection with structurally unexpected crystallization of the melt into an ingot directly in the bath, lack of funds for transportation and replacement of the bath to the other, ready for further melting, quick and technological disassembly and repair of the damaged lining of the bath electric arc furnace.

The basis of the claimed invention tasked with developing bath design-mold unit for production of ferrotitanium by electric arc melting of rutile under a layer of protective flux, which will ensure efficient unloading of refrigerated and zakristallizuetsya ferrotitanium in solid form, quick repair and recovery of damaged lining and design elements for future reusable functional use, the averaging of the chemical composition obtained in the tub-the mould ferrotitanium and improve its quality.

The problem is solved in that tub-mould 1 unit for production of ferrotitanium by electric arc melting of rutile under a layer of protective flux includes a metal square case, in the base 11 which is securely connected to the fixed current-carrying electrode 9, four steel side walls 5, which are refractory lining in the form of plates 2, and which form the vertical portion of the bath of the mold, between the base 11 which, side walls 5 and a stationary current-carrying ele what trodon 9 installed refractory products 10, when this plate 2, which form the refractory lining of a bath-mold made of graphite, and some of these graphite plates 2 on the side of the steel walls 5 are attached with the upper retaining bracket 4 and the lower retaining brackets 13 and refractory products 10 that are located under the said plates 2 made of fireclay, a stationary current-carrying electrode 9, which is located in federovna pod bath of the mold, its upper surface is able to contact with the melt ferrotitanium, and made of round graphite rod, which has an external thread, and to form a tight electrical contact he screwed its lower end to the base 11, is connected to one of the electrical contacts, four steel side walls 5, which are rigidly attached four horizontally mounted rotary loop 7, respectively, through which is provided the lowering of the steel side walls 5 in a horizontal position for the free discharge of ferrotitanium in solid form and the rise of the steel side walls 5 are welded thereto the arm 3 in a vertical position with fixing these walls 5 between themselves in this position by clamps 12, along the side of the steel wall 5 fixed level of 8 asbestos for insulation from the case is on contact with the basis of 11 bath-mould which has the corners rigidly attached to the lifting lugs 6 for transporting it to the place of unloading ferrotitanium and repair, and to establish in place of melting.

From the known to the applicant of the prior art, which is partially presented in this application in the design of electric arc units or furnaces DC includes metallurgical capacity - lined refractories bath, in which the recovery processes of the oxide of the metal and non-metal compounds with simultaneous heating and melting. In these structures the tub is made fixed on the surface of the floor of the shop or sections of the device that has the code or the cover through which the lower prashadam or consumable electrodes for education between them and the lower or bottom electrodes of an electric arc and, consequently, reduction and smelting loaded into the bath mixture or melting of a consumable electrode, which is filled with the need to process the charge. As in the claimed invention for use melting of a consumable electrode with the compacted mixture, which is located in a steel shell, which when lowered through the hole in the lid is fused with the end under a layer of protective flux electric arc to a complete meltdown (only cinder), mark is no mark, that is filled with melt ferrotitanium and protective metallurgical slag bath to ensure continuity of the process of obtaining ferrotitanium made interchangeable with the possibility of its easy transportation from site of attachment of the upper electrode to the area of the cooling and crystallization of the obtained melt ferrotitanium and, if necessary, disassembly and repair of the damaged lining of the bath. In parallel, it is advisable to set in place a cooled bath the other, ready for the next recovery process and melting of the following consumable electrode with the charge. After completion of the crystallization liquid ferrotitanium and slag bath unload and prepare for a new cycle of recovery and melting ferrotitanium. In accordance with its primary function - obtaining ferrotitanium in solid form - the claimed invention called EN-mould.

Bath design-mold unit for production of ferrotitanium by electric arc melting of rutile under a layer of protective flux is represented in the drawings - figure 1, 2. 1 shows a top view of a bath-mold unit for production of ferrotitanium by electric arc melting of rutile under a layer of protective flux. In Fig. 2 presents olvida and half longitudinal section of a bath-mold, which is shown in Fig. .

Bath-mould 1 unit for production of ferrotitanium by electric arc melting of rutile under a layer of protective flux (see figure 1, 2) consists of a square metal housing made of steel sheet, which covered square steel two-piece, with a round hole for insertion of the upper electrode (consumable or narashimha), a lid (not shown), sections of which are removable and one of which has attached to it a lateral exhaust ventilation system workspace bath of the mold. In the centre line of the base 11 square metal housing with external thread tightly screwed into the fixed current-carrying electrode 9, which has the appearance of a round rod, which is made of graphite and a steel base 11 on which is supplied current from a power source (not shown). On the basis of 11 around a stationary electrode 9 several layers of tightly Packed lightweight refractory products 10 out of clay so that the joints of each layer of refractory refractory products for 10 do not coincide with locations of joints subsequent (to the top) layer. The last layer of refractory material, the upper surface of which is flush with the upper surface of the fixed current-carrying electrode (9) is a graphite dps is you 2, which form under a bath of the mold and are the lower part of her workspace.

The top from the working hearth cubic space of a bath-mould limited part of the steel, which consists of four steel side walls 5. Steel side walls 5 are rigidly attached retaining the refractory lining of the bottom 13 and top 4 retaining brackets that are closer to the steel side walls 5 are stacked refractory fireclay products 10 and tightly to him graphite plate 2, which is refractory lining steel side walls 5. In a vertical position four steel side walls are held one on one clamps 12 and when they release these walls, together with the refractory lining) have the opportunity to sit with welded thereto from the outside handle 3, and is rigidly attached externally to said walls 5 rotary veils 7 in a horizontal position. From the outside to the steel square case along the side of the steel wall 5 is attached asbestos strips 8, which prevent accidental contact of personnel operating the bath-mould 1 in the course of its operation with current-carrying parts. To ensure transportation baths-mold 1 from a host of pumping ve is hnic electrodes in the working space on a plot of cooling and solidification of the melt ferrotitanium and slag at the bottom corners of the steel bath of the mold 1 is rigidly attached to the four lifting lugs 6.

Bath-mould 1 unit for production of ferrotitanium by electric arc melting of rutile under the ball of protective flux.

Before operating bath of the mold 1 check the operation of all mechanical parts and the integrity of the asbestos strips 8. Collect tub-mould I in the following way. The first base 11 is screwed stationary graphite electrode 9. To ensure good comparedate from base 11 to a stationary graphite electrode 9 on the basis of 11 fall asleep fine (<2 mm) graphite fight with a layer of 5-6 mm In graphite battle laid the first layer of refractory fireclay products 10, the gap between them should not be more than 2 mm On the first layer of refractory products 10 invested their next layer so that did not match the gap of the lower layer with gaps the next layer. Gaps and voids are formed in the process of stacking layers of refractory filled, for example by margalita (fraction not greater than 1 mm). On the top layer of refractory fireclay products 10 are stacked graphite plate 2, chosen so that their upper edge is flush with the upper platform stationary current-carrying graphite electrode 9. The gaps between the specified electrode 9 and the graphite plates 2 smeared with a mixture of the electrode combat (80 wt.%) and liquid glass (20 wt%). Side is the other wall 5 by means of the handles 3 are raised to a vertical position on the swivel hinges 7 and is fixed in this position by means of clamps 12. Between the brackets 13 and 4 are fixed and fixed fireclay 10 and graphite 2 refractories. The size of the graphite plates 2 are selected so that they coincided with graphite plates 2 pod joints without gap. The gaps between vertically installed on the steel side walls 5 graphite plates 2 smeared above the electrode mixture fight and liquid glass. All inspection and Assembly are performed or in the workplace under the pin and lower the upper arachodonic and consumable electrodes, or on the site of unloading and repair, and after Assembly, respectively, bath-mould 1 is ready to melt.

After Assembly into the bath and the mold 1 download a protective flux, which is melted prashadam graphite electrode unit for production of ferrotitanium by electric arc melting of rutile under a layer of protective flux. When lowering it into the flux through rotation from the neutral position narashimha electrode, which is fixed on additional horizontal rod vertical posts of this setup, in a vertical position over the bath-mould 1. Rod driven vertical motion drops in a protective flux. On prashadhey graphite electrode above installation serves current from the power source with the formation of electric arcs is between prashadam graphite electrode and the fixed current-carrying electrode, which is connected to the base 11 bath of the mold 1. With the help of an electric arc in the process of melting the protective flux.

Before beginning the process of melting the protective flux in the steel shell of a consumable electrode of this setup load pre-formed mixture of rutile (or other oxidized titanium containing material), reducing agent (for example, aluminum grains and a bonding agent (for example, liquid glass), which fill and compacted in a steel shell using the seal installation charge. Compacted to experimentally established density-consumable electrode is fixed in the lifting and transport device and loaded into the drying chamber, where it stand to receive a certain amount of moisture in it.

At the end of the drying process and melting a non-consumable electrode protective flux prashadhey electrode of this setup bath of the mold 1 by the additional rotation of the rod away from the bath of the mold 1. At the same time or after the liberation of the working space electroslag furnace dried consumable electrode hoisting means, such as a crane, serves to mount this setup, where it is fixed and with a drive movement in a vertical rack space is between the bath and the mold 1 with immersion in the melt protective flux. For consumable electrode of this setup and the fixed current-carrying graphite electrode, which is mounted in the base 11 of the bath of the mold 1, serves voltage and current to form an electric arc that melts consumable electrode of this setup. The result of the processes of recovery and melting the mixture, which contains a consumable electrode is formed melt ferrotitanium in the tub-the mould 1.

The parameters of electric arc mode and control the distance between the ends of the electrodes in a protective flux bath of the mold 1 are recorded, managed, and maintained in an optimal manner using the indicators on the control panel of this setup. Management of the specified parameters of the process can be carried out both in manual and automatic modes depending on the task, which is solved by means of this setup. Bath volume of the mold is designed so that it fits a certain amount poplavljenim consumable electrodes (from 1 to 7 electrodes in length 600-1200 mm).

After penetration of the replaceable consumable electrode to the end, if the volume of the bath of the mold 1 is not filled in, from the workspace electroslag furnace of this setup deduce the calcine consumable electrode using visheukazannogo movement along the vertical rack. The mount consumable electrode free from cinder and fix it new, previously dried, consumable electrode. This electrode is dipped into the melt ferrotitanium in the bathroom-the mould 1 and again served him food for arcing and melting of a consumable electrode. During the operation of the release of cinder and consolidation of the new consumable electrode into the bath and the lower mold in a known manner graphite prashadhey electrode to maintain the protective flux and educated melt ferrotitanium in liquid form and lift it out when you are ready to melt the new consumable electrode. The melting of the consumable electrode is repeated in the described manner to fill all bathtubs-mould 1 melt ferrotitanium.

After filling the volume of the mold 1 ferrotitanium and slag melting process is stopped with a bath-mold remove the cover, disconnect the electrical contact from the base 11, lifted by the lifting lugs 6 and transported to the appropriate means for the cooling section, unloading and repair. After cooling, the product melt is released from the volume of the mold 1 by releasing the clamps 12 and lower side walls 5 in a horizontal position with the following unloading about the ukta melting - ferrotitanium with slag in solid form in a different capacity. Bath-mould 1 carefully examined to determine damage and damage and, if necessary, it was repaired. After his release from ferrotitanium and slag bath-mould 1 is going on a simplified scheme for further use in the following the melting process.

Recognized good bath, a mold 1 is collected in the following order.

The side walls 5 with handles 3 swivel hinges 7 are raised to a vertical position and fixed therein by clamps 12. The cracks, if they were formed between the vertical graphite plates 2 on the side walls 5, smeared with a mixture of small electrode fight and liquid glass in the above proportions. After collecting the finished tub-mould 1, if necessary, transported in a similar manner to the attachment of consumable electrodes of this setup.

It should be noted that partial disassembly of the bath of the mold 1 is performed after each melting process ferrotitanium on the site of unloading and repair. Example.

Bath-mould 1 in the facility for ferrotitanium by electric arc melting of rutile under a layer of protective flux used in research trunks of rutile. In the research process heats produced spent the electrodes length 600-1200 mm and a weight of 70-150 kg, which contained the charge, which ranged from 50 to 80 wt.% rutile chemical composition: 94,0 wt.% titanium oxide, 1.50 wt.% silicon oxide, 0.07 wt.% phosphorus pentoxide, 3.0 wt.% aluminum oxide and the rest is iron oxide, aluminum grist AP-1 and liquid glass. During melting, the arc voltage was 15-50, and the current is 1000-3000 A. Moisture blend in dried costly electrode does not exceed 10%.

Melting was melted 6 consumable electrodes and received 150 kg ferrotitanium with the chemical composition of 65 to 85 wt.% titanium, 2.0 to 5.5 wt.% aluminum, up to 1.5 wt.% silicon and 17-25 wt.% iron that meets the state standard 4761-91 on ferrotitanium brand FTEs (Ti 65-75 wt.%, Al 5.0 wt.%, Si of 1.0 wt.%, With 0.4 wt.%, V to 3.0 wt.%, Cu 0.4 wt.%, Mo 2.5 wt.%, Zr 2.0 wt.%, Sn of 0.15 wt.%).

In a separate research trunks obtained ferrotitanium had composed up to 85.2 wt.% titanium, which is approximately 10% higher than the corresponding figure for the state, and the total content of impurities of Si+With+V+Cu+Mo+Zr+Sn) was less than 13 wt.%, which is 13% less than the corresponding figure for the standard.

Studies have shown, lining and other parts of the bath-mold 1 after 20 heats the lining of the bath-mold needs minor repairs - puttying no more than two seams on the side walls 5 and, accordingly, the viewing operation regarding the availability of the damages the parts of the bath of the mold 1 in this case is from 1 to 3.5 minutes. In addition, as mentioned above, to create continuity in the process of melting consumable electrodes after filling the bath-mould 1 it is transported to the cooling section, unloading and repair, and in its place under the mount of consumable electrodes installations for the manufacture ferrotitanium by electric arc melting of rutile under a layer of protective flux transported and set another tub mold 1, which is equipped and ready to heat. I.e. the time to replace one (full melt ferrotitanium) bath-mould 1 other bathroom-mold 1 is, as shown by research trunks, not more than 2.5 to 3.5 minutes, which compared to the time of pouring liquid alloy and slag in different moulds or other metallurgical vessel are on 24-31% less.

The chemical composition of the ingots ferrotitanium, the resulting research bottoms, were studied and analyzed throughout the volume of the ingot. The obtained data on the content of titanium and iron in the upper third, middle third and bottom third of the bars differ in the range of 1.75-2,34%, which indicates that sufficient averaging of the chemical composition of the ingots ferrotitanium.

Given the description does not limit the claimed invention in all its modifications, improvements and is quivalent, which do not extend beyond the stated formula, and serves only as illustration, and clarification of specific embodiments of the invention.

Bath-mold (1) unit for production of ferrotitanium by electric arc melting of rutile under a layer of protective flux containing a metal square case, the base (11) which is securely connected to the fixed current-carrying electrode (9), four steel side walls (5)who have refractory lining in the form of plates (2)forming the vertical portion of the bath of the mold, between the base (11) of the housing side walls and a stationary current-carrying electrode (9) is installed refractory products (10), characterized in that the plate (2), which form refractory the lining of a bath-mold made of graphite, and the graphite part of the plates (2) on the steel side walls (5) are retained by an upper retaining brackets (4) and the lower retaining bracket (13), and refractory products (10), which are located under the said plates (2), made of clay, a stationary current-carrying electrode (9) is located in a refractory-lined hearth bath of the mold with the possibility of contacting its upper surface with melt ferrotitanium and made of round graphite rod, which has an external thread and for the formation of tightly what about the electric contact is screwed into the lower end of the base (11), connected to one of the electrical contacts, with four steel side walls (5) is rigidly attached four horizontally mounted rotary loop (7), respectively, through which is provided the lowering of the steel side walls (5) in the horizontal position for the free discharge of ferrotitanium in solid form, as well as the rise of the steel side walls (5) are welded thereto a handle (3) in a vertical position with fixing these walls (5) in this position the clamps (12), and along the side of the steel wall (5) is fixed to asbestos bars (8) to isolate from accidental contact with the base (11) bath-mould, which has the corners rigidly attached to the lifting lugs (6) for transporting it to the place of unloading ferrotitanium and repair, as well as for installation in place of melting.