|
 |
Titanium-enriched ilmenite residue, its application and method of obtaining titanium pigment Claimed is titanium-enriched residue after leaching of ilmenite with hydrochloric acid as raw material for obtaining titanium-containing pigment by means of sulfuric acid method. Titanium enriched residue consists of friable and porous residue, obtained after removal of iron from crystal lattice of ilmenite (FeTiO3) by leaching with hydrochloric acid, and metatitanic acid aggregates. Residue contains small amounts of retile and titanium augite, with larger part of constituting it TiO2 being amorphous. Solid substance, obtained after leaching, is dried with formation of titanium-enriched residue. Residue is soluble in sulfuric acid, with water content in it constituting not more than 20%, with residue representing white, light-yellow or light-gray particles or powder, in which content of amorphous TiO2 constitutes 65-97%, the total content of iron constitutes not more than 8%, and specific weight of residue constitutes 2.9-3.6. |
 |
Invention relates to method of titanium obtaining. Method includes presence of titanium oxide with the level of admixtures of at least 1.0 wt %, taken in form of ore or ore concentrate. After that performed is reaction of titanium oxide with formation of titanium oxycarbide. After that, electrolysis of titanium oxycarbide in electrolyte is carried out, with titanium oxycarbide being made as anode. Then, extraction of refined metal titanium from cathode in electrolyte, with the level of admixtures being 0.5 wt %, is carried out. |
|
Proposed method comprises mixing of initial titanium-bearing slag with soda ash, mix sintering and leaching of produced cake, first, in water for production of iron-titanium-bearing precipitate and, then, in muriate for production of titanium-bearing precipitate. Then, pulp is filtered to separate the precipitate to get titanium dioxide concentrate. note here that initial slag sintering with soda ash occurs at 900°C and Na2CO3:slag ratio equal to (0.98-1.15):1. Cake sintering in water is conducted to transfer sodium silicate to solution while titanium dioxide concentrate is made by calcination of precipitate resulted from hydrochloride-acid treatment. Note here that said initial titanium slag represents that of reducing fusion of ilmenite. |
|
|
Treatment method of mixture of niobium and/or tantalum and titanium oxides Treatment method of a mixture of niobium and/or tantalum and titanium oxides for separation of niobium and/or tantalum from titanium involves dilution of the mixture at heating in the hydrofluoric acid solution so that a fluoride solution is obtained. A tetramethylammonium hydroxide solution or its salt is added at mixing to the obtained fluoride solution and evaporated to dryness. Formed complex fluorides of niobium and/or tantalum and tantalum with a tetramethylammonium cation are treated by low-molecular aliphatic ketone for extraction of complex niobium and/or tantalum fluorides in the form of tetramethylammonium hexafluoroniobate and/or hexafluorotantalate to the solution. Tetramethylammonium hexafluorotitanate is obtained in the deposit. |
|
|
Method for opening perovskite concentrate Method involves carbothermal vacuum treatment. Prior to carbothermal treatment, a charge is prepared, which consists of perovskite concentrate and carbon-containing material in the ratio suitable for formation of calcium carbide, and titanium carbides and oxycarbides. Opening is performed in one unit in two stages. At the first stage, carbothermal treatment is performed at the temperature of 1100-1300°C and residual pressure of 10-100 Pa so that solid mixture of calcium carbides and titanium carbides and oxycarbides is obtained. The second stage is performed at the temperature of 1400-1500°C and pressure of 5-10 Pa for dissociation of calcium carbide and its stripping so that elementary calcium and carbon is obtained and with concentration in the residue of precious components of titanium, tantalum, niobium and rare-earth metals, which are contained in perovskite concentrate and are subject to chlorination. |
|
 |
Electrolysis unit for saturation of cacl2 melt with calcium Electrolysis unit includes a metal housing with anode and saturating compartments and a metal diaphragm separating the anode and the saturating compartments, where as saturating melt there used is liquid Ca-Cu melt, and as melt for saturation there used is electrolyte CaCl2+(20-60) wt % KCl. The metal diaphragm is submerged into liquid Ca-Cu melt approximately by one third of thickness of its layer to prevent penetration of anode gases and transfer of electrodeposited calcium through the melt to the saturating compartment, and metal surfaces of the housing of the anode compartment and the diaphragm have the coating in the form of a layer of dense corrosion-resistant ceramics for protection against action of anode gases. |
|
Method includes double-stage treatment of gases first in cyclones with return of trapped dust for melting process, then in metal fabric filters with dust production. After treatment of gases dust is removed from filters and further processed. At the same time dust after extraction from a metal fabric filter is loaded into a reservoir, binder is supplied, mixed to produce a paste-like mixture. Then the mixture is granulated to produce granules, which are dried and sent for further processing by chlorination. Using a suspension of sludge of carnallite chlorators makes it possible to additionally recycle wastes of magnesium production. |
|
|
Processing method of arizonite and ilmenite concentrates Processing method of arizonite and ilmenite concentrates involves processing of initial concentrate by leaching of hydrochloric acid with a solution at controlled pressure and temperature in a closed volume at temperatures higher than 99°C. After leaching is completed, extraction of the deposit enriched in titanium and its treatment is performed. Prior to leaching, initial concentrate is subject to preliminary mechanical activation till the level providing extraction of not less than 85% of iron and not more than 5% of titanium to the solution. |
|
|
Method for obtaining titanium-aluminium alloy from oxide titanium-containing material Method for obtaining titanium-aluminium alloy from oxide titanium-containing material is proposed, which involves preparation of charge containing oxide titanium-containing material, aluminium and calcium-containing material, reduction melting and separation of alloy from slag. As calcium-containing material, calcium fluoride and calcium, or calcium fluoride and calcium oxide, or calcium fluoride and mixture of calcium and calcium oxide is used; charge is prepared so that the following ratio of titanium dioxide, aluminium, calcium and/or calcium oxide, calcium fluoride, wt %, is obtained: TiO2 : Al: Ca and/or CaO : CaF2 1:(0.6-1.6):(0.3-1.0):(0.1-0.3), and reduction melting of the charge is performed at the temperature of 1450-1750°C. |
|
|
Spongy titanium obtaining method Method involves reduction of titanium tetrachloride by means of magnesium in a vessel so that spongy titanium block is obtained, and its cleaning from impurities. Then, block is removed from the vessel, skull is separated from ball, ball is divided into upper and lower parts; and further completing of marketable batch of spongy titanium is performed. In order to obtain marketable batch of high-purity spongy titanium, upper part of ball is separated from lower part at the height of 21-35% of the ball height. Separated upper part of the ball is crushed and dissipated as to fractions, and completing of marketable batch of spongy titanium is performed using the fraction of 70+12 mm with content of the following components, wt %: nickel and chrome of up to 0.009 and iron of up to 0.025. |
|
|
Method for processing oil containing leucoxene flotation concentrate for producing rutile Method involves distillation of the oil fraction in an inert gas atmosphere, milling and reducing roasting of the mineral residue by petcoke. Then milling and sulphatisation of titanium cinder are performed with oleum and leaching of titanium-containing compounds with water. |
|
|
Procedure for extraction of rutile from ilmennite Procedure consists in fluoridation of raw material by sintering with fluoride agent. Upon fluoridation product is crumbled, dissolved in distilled water and filtered. Produced solution is settled with ammonia at pH 8÷9, sediment is mixed with chloride of ammonia and baked at 220-270°C during 5 hours. |
|
 |
Method of producing gas absorber from titanium powder Invention relates to production of gas absorbers from titanium powder to be used in electric vacuum and other instruments as absorbers of diverse gases at reduced pressure in X-ray tubes or fundamental particle accelerators. Proposed method comprises mixing titanium dioxide with reducing agent and heating prepared mix. Aluminium nanopowder is used as reducing agent. Said nano powder is produced by electric explosion of aluminium conductor in atmosphere of argon, conductor-to-titanium dioxide ratio varying from 0.8:1 to 1.2:1. Mix is heated at 400-600°C in vacuum at 1.9-2.1 Pa for 3-5 minutes. |
|
Procedure for production of titanium of high purity for sputtering target Procedure consists in purification of source rods of metal titanium produced by iodide procedure in reactor. Rods are purified in a flow of dehydrated chloride at temperature 500°C. Further, rods of titanium are subjected to vacuum zone re-crystallisation to production of poly-crystals of titanium of high purity and then to electron vacuum melt for obtaining required by weight amount of poly-crystals of high purity titanium in a flat crystalliser. There is produced a flat ingot, melt on each side through total depth. |
|
 |
Installation for production of sponge titanium Installation for production of sponge titanium consists of retort-reactor with cover, of drain unit, of false bottom made in form of stop and of perforated sheet arranged on lower supports. Also, the perforated sheet consists of two parts in form of a ring and a circle attached on rods by means of pins; the rods are rigidly attached to one of lower supports of the false bottom. |
 |
Procedure for processing titanium-magnetite concentrate Procedure for processing titanium-magnetite concentrate consists in leaching concentrate with sulphuric acid and heating in presence of metal iron, in transfer of iron and vanadium into leaching solution and in concentrating titanium in residue. Further, solution is evaporated; iron containing residue is extracted and subjected to pyrolysis producing iron oxide and regenerated hydrochloric acid. Titanium containing residue is dried and baked producing a titanium product. Also titanium-magnetite concentrate is leached at concentration of hydrochloric acid of 15-19% and temperature 95-105°C. Iron-vanadium product in form of sediment of iron and vanadium hydroxides is settled from leaching solution by means of processing with ammonia solution at pH 2.4-2.8; there is produced iron chloride solution (II). Produced iron chloride solution is evaporated; iron containing sediment is extracted and the left sediment is subjected to pyrolysis. Titanium containing sediment is baked at temperature 700-800°C. |
 |
Installation for magnesium-thermal production of spongy titanium Invention refers to non-ferrous metallurgy, particularly to installations for production of spongy titanium. The installation for magnesium-thermal production of spongy titanium consists of a reduction device with a bottom branch and cover and a draining facility with a valve; the reduction device is installed into a furnace equipped with electric heaters. The furnace consists of a jacket, of lining with channels supplying air into the furnace and withdrawing air from the furnace and of a bottom with an aperture for the draining facility. The installation also consists of pipes for supply of compressed air cooling the bottom branch and valve of the draining facility. Notably, the pipes supplying compressed air to cool the bottom branch and valve of the draining facility are installed in the aperture of the furnace bottom. From above the pipes for supply of compressed air cooling the bottom branch and the valve of the draining facility are perforated. |
|
Method of processing quartz-leucoxene concentrates Invention relates to a method of processing quartz-leucoxene concentrates containing high concentrations of rutile-quartz aggregates, and can be used to produce synthetic rutile. The method involves fluorination of the concentrate using ammonium fluoride while heating with separation of ammonia water, thermal treatment of the fluorination product with separation of silicon compounds in form of a sublimate of a ammonium silicofluoride and titanium in form of a residue of synthetic rutile and obtaining titanium and silicon dioxides in form of end products. Before fluorination, the initial concentrate is mixed with an ammonium fluoride solution with concentration of 300-400 g/l. The mixture is dried at temperature of up to 100°C and fluorination is carried out while raising the temperature to above 190°C. The fluorination product is thermally treated with separation of titanium and silicon compounds at temperature 250-280°C for 0.8-1.0 hours. The obtained residue of synthetic rutile is burnt at 800-850°C while trapping fluorine with ammonia water and obtaining an ammonium fluoride solution. The sublimate of ammonium silicofluoride is treated with ammonia water to obtain silicon dioxide with nanosized particles and the ammonium fluoride solution, which is mixed with the ammonium fluoride solution obtained from burning the residue of synthetic rutile, is evaporated to concentration of 300-400 g/l and then mixed with a new portion of the initial concentrate. |
|
 |
Method of processing of iron-titanium concentrate Method includes formation of charge consisting of concentrate and sodium carbonate by means of intergrinding of components and reduction of charge components at presence of taken with excess carbonaceous reducing material at temperature 850-1300°C. Additionally batch material reduction is implemented up to providing of content of metallic iron in the range of particles dimensions 10-300 mcm not less than 80%. Received partly reduced conservative mass, consisting of metalise phase containing main part of iron and vanadium and oxide phase, containing main part of titanium and vanadium, it is grinned up to size not more than 300 mcm. Then it is implemented leaching of vanadium from reaction mass and leaching residue is separated from vanadate solution. After separation residue of leaching is subject to gravitational separation in water flow with separation of metalised and oxide phases. Metalised and oxide phases are separately subject to wet magnetic separation for receiving of metallic iron and titanium oxide concentrate. Additionally wet magnetic separation is implemented in the range of field intensity 20-300 E. |
 |
Manufacturing method of consumable electrode Invention relates to field of special electrometallurgy and can be sued at manufacturing of consumable electrode for melting of ingots of high-reaction metal and alloys, for instance titanic, in vacuum arc furnace. Manufacturing method of consumable electrode from wastes of titanic manufacturing includes assembly of electrode elements by placement of them on conducting rod by whole its length subsequent welding on of elements to rod by welding. In the capacity of electrode elements there are used blanks in the form of disks with opening in the center. Blanks are received by means of remelt of wastes of titanic manufacturing on tray with projection in the middle. |
 |
Rolling method of silica-titanic concentrates Method is implemented by means of chlorination with carbonaceous reducing agent. Additionally initial silica-titanium concentrate with content of titanium dioxide 45-68% and silicon dioxide 25-50% is prepared, mixing with carbonaceous reducing agent in its weight ratio (2-4):1, it is provided uniformity of charge by means of preliminary selection of concentrate and reducing agent size. The charge is subject to thermal treatment or treatment in field of high-temperature arc plasma in reducing environment up to initial stage carbidation of silicon oxide. Chlorination is implemented at temperature 700-1200°C with receiving of tetrachlorides of titanium and silicon, it is divided and cleaned them for following treatment into metals, metal oxides and other compositions of particular elements with return of circulating chlorine to chlorination. |
 |
Device for receiving of spongy titanium Device includes crucible-reactor with cover and branches, exhaust device, false bottom, implemented in the form of perforated sheet with cuts by edges, located on bottom supports. Additionally perforated sheet is implemented at edges with platforms, formed by cuts. Bottom supports are implemented with openings for fixation of perforated sheet in horizontal position on bottom supports by means of bars, passed through openings of bottom supports and thrown on platforms of perforated sheet. Platforms, formed by cuts, are located evenly by all edge of perforated sheet. By edge of perforated sheet it is located not less than four platforms, located on-the-mitre 90° to each other. |
 |
Remelting method of titanic sponge or powder and device for its implementation Method of remelting of titanic sponge or powder is in that titanic sponge or powder is uninterruptedly fed in vacuum into fireproof melting crucible. After melting by radiation of optical-quantum generator of high power density - laser it is formed titanic ingot, providing continuous runoff of titanium melt into water-cooled ingot mould. Device contains evacuated vessel. In it is installed bin with titanic sponge or powder, fireproof melting crucible, transporter uninterruptedly fed of titanic sponge or powder into fireproof melting crucible, optical-quantum generator of high power density - laser for remelting by radiation of titanic sponge or powder and continuous runoff of titanium melt into water-cooled ingot mold. |
|
Method of titanium-bearing raw material processing Method includes preparation of charge, its loading into chlorinator with melt of metals chlorides, chlorination by feeding of chlorine-containing agent through 4 chlorine lead-in into melt of metals chlorides with continuous innovation of melt with receiving of gas-vapor mixture, containing titanium tetrachloride. Then it is implemented saline cleaning of gas-vapor mixture by saline melt of alkaline metals chlorides and cleaning in spray scrubber with condensation of admixtures chlorides in pulp of liquid titanium tetrachloride, used in the capacity of reflux liquid in scrubber, circulation of formed pulp in circuit of spray scrubber in circuit of chlorinator, extraction of titanium tetrachloride by condensation in direct-contact condenser. Additionally chlorination is implemented with usage in the capacity of chlorine-containing agent of chlorine gas and/or anodic chlorine-gas, pulp at first is contact to waste from chlorinator by gas-vapor mixture, and then with melt mirror by metal chlorides. Saline cleaning of gas-vapor mixture is implemented by means of contacting of gas-vapor mixture contact, escaping from chlorinator with surface of melt of alkaline metals chlorides at keeping of melt temperature 350-400°C, concentration of free alkaline metals chlorides 0.5-3.0 wt % and with processing of surface coating of melt by gas stream of inert gas at a rate of feeding 40-120 m3/hour. |
|
|
Method to process titanium-silicon-containing stock Invention relates to metallurgy and can be used for desiliconization of mineral stock, production of artificial rutile, silicon dioxide and modification of its surface. Proposed method comprises initial stock fluorination by fluorine-containing ammonium salt to produce fluorinated mass containing mix of silicon and titanium compounds. Fluorination over, said mix is separated to produce commercial products based on titanium and silicon dioxides. Initial stock is fluorinated at 110 to 195°C, or without heating. Aforesaid mix is separated by sublimation of ammonium silicon fluoride at 305 to 450°C, or by water leaching. |
|
 |
Method of producing titanium dioxide Invention can be used in production of titanium dioxide when processing material which contains titanium and iron, for example ilmenite concentrates. The method of producing titanium dioxide involves the following steps: (a) reacting iron-containing titanium ore with an aqueous solution of NH4F at temperature 100-120°C, pressure of 1-2 bars and pH of approximately 6.5-7.0; (b) filtering the obtained aqueous suspension with subsequent separation into a precipitate fraction which contains ammonium fluoroferrates, and a filtrate fraction which contains ammonium fluorotitanates; (c) hydrolysis of the obtained filtrate fraction thereby obtaining a solid component which is ammonium fluorooxotitanate; (d) thermal hydrolysis of the solid component obtained at step (c). |
 |
Method of production of high purity titanium for sputtered targets Source material in form of rod of metallic titanium obtained by iodide method is placed into boat of reactor made out of refractory material and heated to temperature 750-800°C; further flow of mixture of argon with bromine is run through reactor over source material. Mixture is obtained by running argon through a temperature-controlled at 20°C ampoule with liquid bromine. Mixture of argon with bromine is run through volatile bromides till maximal purification of rod from impurities. Purified titanium rod is subject to electron vacuum zone re-crystallisation till obtaining poly-crystal of high purity titanium. Amount of material required by weight in form of titanium poly-crystals is re-melted in a cooled flat crystalliser till obtaining cast structure of high quality by means of melting flat ingot from each side to total depth. |
 |
Method of obtaining titanium concentrates involves processing anatase concentrates obtained from mechanical preparation in the following sequence: burning (A), reduction with gas (B), magnetic separation of the reduced product in a weak field (C), magnetic separation in a strong field of the non-magnetic fraction, obtained from magnetic separation in a weak field (D), leaching the product of magnetic separation in a strong field with hydrochloric acid (E), filtration and dehydration of the leached product, high-temperature oxidation of the dehydrated material (F), water hardening of the oxidation product (G), leaching the hardened product with hydrochloric acid (H), filtration and drying of the product of second leaching and magnetic separation in a strong field (I). The non-magnetic fraction of the last magnetic separation becomes the final product. Alkaline solution from first and second leaching is fed into a device for extracting rare earth elements and recycling HCl (J). |
|
Method of silicon- calcium-containg concentrate purification from admixtures Invention relates to method of purifying natural and technological silicon- calcium-containing concentrate from admixtures of sulfur, phosphorus and carbon and can be applied in production of materials used in coating of welding electrodes. Method includes crashing of concentrate into fractions not more than 100 mcm. Milled concentrate is distributed in layer not more than 1mm on working surface, which has coefficient of light flow reflection not less than 0.6. Then concentrate is processed by influencing on it by movable laser ray with density of irradiation power 102-106 wt/cm2 at rate of laser ray axis movement 0.3-2.0 cm/s relative to processed concentrate, admixtures being removed as gaseous products from zone, located at distance 2-4 mm from laser ray axis. |
|
|
Method of processing of raw materials containing titanium Invention relates to a method of processing of the raw materials containing titanium and can be used to obtain fine titanium dioxide and ferric oxide base powders. The method involves fluorination of the raw materials by means of sintering with fluoride reagent, heat treatment of the fluorinated mass in order to separate the fluorination products by sublimation, pyrohydrolysis of the residue left after sublimation to obtain ferric oxide. Fluorination uses ammonium fluoride as the fluoride reagent, ammonium bifluoride or their mixture and fluorination is performed at 110-240°C for 0.5-5 hours in vacuum or in inert gas. Heat treatment of the fluorinated mass at sublimation is performed at 300-600°C. The sublimation products are trapped with water obtaining a solution of ammonium fluorotitanate and hydrated titanium dioxide is precipitated with an aqueous solution of ammonia. After that the sediment is filtered from the solution of ammonium fluoride and heat treated to obtain anhydrous titanium dioxide. Pyrohydrolysis of the residue after sublimation is performed at 300-650°C for 0.5-3 hours. |
|
 |
Processing method of ilmenite concentrates Charge consisting of ilmenite concentrate and carbonaceous reducing agent in ratio 1:(0.09-0.15) respectively are grinned up to size particle size 40-73 micron, it is mixed with binding agent and with addition of water in amount 6-7.3% of mass, there are manufactured pellets and they are dried at temperature 200-400°C. Pellets metallisation is implemented in pipe furnace at temperature 1100-1300°C. Hot pellets are molten in electric furnace at temperature 1830-1870°C and melt is isolated in electric furnace before poring during 3-5% of total duration of melting. In the capacity of ilmenite concentrate there are used iron-titanic concentrates with low content of admixtures, containing 50-55% % TiO2, 32-36% FeO, 10-15% Fe2O3, up to 0.5% AL2O3, up to 0.8% SiO2, up to 0.1% Cr2O3, up to 0.6% MnO, up to 0.05% P2O5, up to 0.3% V2O5, up to 0.1% CaO and up to 0.7% MgO. Used during reduction processes carbonaceous reducing agent - blast-furnace coke, pitch coke, petroleum coke, coal contains active carbon not less than 80% and sulphur not more 1%. |
 |
Installation for magnesium-thermal production of sponge titanium Installation for magnesium-thermal production of sponge titanium consists of electric pit-type heating furnace with apparatus of reduction in form of retort with cover, false bottom and drainage facility. The electric pit-type heating furnace is made with two rows of channels for supply cooling air, with channels for hot air exhaust and with an opening in a hearth. The upper row of channels for supply of cooling air is arranged at a distance from the top of the electric furnace constituting 0.10-0.12 of its height. The second row of channels for supply of cooling air is arranged at a distance from the top of the electric furnace constituting 0.25-0.27 of its height. Channels for hot air exhaust are arranged at a distance from the top of the electric furnace constituting 0.35-0.45 of its height. Also ratio between the retort of the apparatus of reduction and height of electric furnace is 0.85-0.95. |
 |
Processing method of titanic jaw Invention relates to non-ferrous metallurgy and can be used in titanium metallurgy, particularly for receiving of titanium jaw by magnesium-thermic reduction, particularly processing method of titanium jaw. Method includes vacuum separation, titanium jaw block extraction from apparatus and its cutting. Additionally at cutting it is separated from block a part of titanium jaw of off grade. Titanium jaw of off grade is crushed, leached by means of charging to nutsch filter with simultaneous feeding of boric acid solution and mixing by counterflow fed compressed air. Then it is washed by water at mixing by by counterflow fed compressed air, dehydrated and dried. Processes of leaching, washing and dehydration are implemented on nutsch filter at compressed air consumption equal to 500-1500 nm3 per 1 tonn of dry jaw. |
 |
Method is implemented by means of liquid-phase recovery of metals from oxides of concentrate batches, consisting of main and additional parts, in conditions of melt revolution by electromagnetic field. During the melting it is effectively used centrifugal effect, accelerated fused fed for melting charge, containing concentrate, and in it there are selectively recovered metals from oxides. At that likewise accelerated iron is diluted in aluminium while production of ferroaluminium. Method is implemented almost excluding gas emission from melt. Facility for method implementation is outfitted by collector circulating ferrosilicium that simplifies process of charge treatment, reduces treatment time of each regular charge batch. Under the bottom of circulating ferrosilicium collector there are located induction units which are equal in structure to induction units, located around walls and under the bottom of assembly that provides decreasing of costs for induction units manufacturing and for electricity supply. |
 |
It is received copper vitriol at reprocessing of copper-chloride fusion cake, which is waste of titanium tetrachloride cleaning. Reprocessing method includes receiving of fine material by treatment of fusion cake by water, its treatment by oxidant at blending, filtration and filtrate treatment by sodium hydroxide and separation of deposit by filtering. In the capacity of oxidant it is used sodium or potassium hypochlorite. Before treatment by sodium hydroxide fine material is filtered, deposit in the form of iron compounds is separated. At treatment of filtrate by sodium hydroxide deposit is received in the form of copper hydroxide, it is washed and repulped in the solution of copper sulfate, heated and during blending is treated by sulfuric acid. Received heated solution of copper sulfate is filtered, filtrate is cooled with receiving of copper sulfate dies, copper sulfate dies are separated by means of filtration, washed and dried. Filtrate received after copper sulfate dies separation is directed to preparation of sulfuric acid water solution or to repulping of copper hydroxide deposit. |
|
Method of processing titanium-silicon containing concentrates with production of artificial rutile Method can be implemented in rare metals industry at processing of titanium-silicon containing concentrates for production of artificial rutile. The method includes mixing of concentrate with a leaching reagent, thermo treatment and leaching with creating of titanium dioxide sediment. At that mixing of the source concentrate is carried out with the use of concentrated solution of sodium hydroxide as a leaching reagent. Produced pulp is thermo treated by heating it at a rate of 5-8°C/min to a temperature of 480-520°C and successive conditioning at that temperature within 2.0-2.5 hrs. An immediate product of thermo treatment is subject to leaching. |
|
 |
High titanium ferro alloy produced by two stages reduction out of ilmenite Invention refers to high titanium ferroalloy, produced by two stages melting in electric furnace; alloy is used as alloying component at production of steel with high level of physic-mechanical properties. For producing of ferroalloy the charge prepared out of ilmenite, iron and/or steel scrap, crushed electrodes and/or coke, lime and/or lime stone is used; then slag containing titanium oxide and part of iron melt on the first stage are withdrawn; a consumable electrode in a steel coat is melted under the layer of flux; the said electrode contains crushed slag of the first stage and aluminium as filler. Ferro alloy contains components at a following ratio, wt %: titanium 68.02-78.7; iron 19.32-30.0; impurities to 1.98. |
 |
Method of processing of oil titanium leucoxenic concentrates Invention refers to metallurgy of rare metals, particularly to methods of processing of hard uncovered concentrates specifically to leucoxenic concentrates produced at dressing of oil bearing siliceous titanium ores of Yaregsky deposit and used for further production of artificial rutile. The method includes sintering of float concentrate at presence of additives, cooling, crumbling and dressing by way of separation of titanium oxide grains from silicates either by physic-chemical and/or mechanical methods. Prior to sintering oil titanium leucoxenic float concentrate is mixed with fuel sorption active additives for their saturation with oil from float concentrate. Sintering is performed by means of filtration burning under the mode of superadiabatic heating in a shaft type reactor. At that oil titanium float concentrate is charged into the reactor from the top together with inert additives, while from the bottom oxygen containing gas-oxidiser is supplied into the reactor by counterflow. Float concentrate is being charged at its successive flow through the heating and drying zones, through pyrolysis zone, burning and cooling zones and is discharged; while oxygen containing gas-oxidiser is supplied during the flow through these zones at inverted sequence; this gas takes part in the processes of burning and interacts with components of the concentrate producing at the final stage gas-product which consists of water steam released during drying and products of oil burning. As inert additives, recycled hard modifying additives in kind of refractory materials are used. The temperature of sintering in the burning zone is maintained within the range of 900-1300°C by means of regulating mass fractions of burning and non-burning materials charged into the reactor and oxygen supplied with gas-oxidiser. |
 |
Invention pertains to procurement of metallic device; in particular, parts for gas turbines of the flying constructions made from titanium alloys. To produce such metallic devices, the following range of procedures must be brought into action. Firstly, one or several non-metallic junction-predecessors should be made ready, each containing metallic composition element therein. These need to be chemically restored to procure a multitude of initial metallic particles, preferably those whose size varies between 0.0254 mm to approximately 13 mm, which do not have to be melted down. After having been fused at a later stage, they will solidify. The melted and solidified metal can be used either as a casting metal product or can be transferred into a partially finished product (billet) to be processed additionally until it is ultimately ready. The invention permits to substantially reduce the frequency of chemical faults in a metal product. |
|
Titanomagnetite processing method Method comprises steps of preparing uniform-content charge including titanomagnetite, carbon-containing reducing agent and binder; palletizing said charge and subjecting it to thermal reduction; terminating reduction at temperature providing transition of slag fraction to yielding state, mainly at 1330-1400°C for producing partially reduced product containing metallic fraction and slag fraction; disintegrating partially reduced product till size of slag fraction particles less than 0.2 - 0.25 mm and separating metallic fraction from it; subjecting slag fraction to electric melting for after reducing of it during melting process; dividing formed melt by density for producing slag component and metallic component including residual part of iron; then combining metallic fraction with produced metallic component for preparing metallic mixture to be cleaned from impurities in order to produce steel; disintegrating slag component and concentrating it for producing titanium product. Method allows decrease electric energy consumption for electric melting procedure till value 1020 - 1080 kWt x h/ ton of slag while providing iron extraction degree 91 -92% and producing titanium product with content of titanium dioxide 96 - 98%. |
|
 |
Production of titanium dioxide Proposed method includes leaching-out of titanium-containing material by sulfuric acid solution, thus obtaining lye containing titanyl sulfate, separation of titanyl sulfate from lye, hydrolysis of titanyl sulfate for forming solid phase containing hydrated titanium oxides followed by roasting the solid phase obtained at the hydrolysis stage. Proposed method includes additional leaching-out stage for leaching-out of solid phase remaining after leaching-out of initial titanium-containing material by means of solution containing sulfuric acid. |
 |
Titanium dioxide production process Invention relates to a sulfate process for titanium dioxide production from titanium-containing material. Process comprises leaching starting material to produce leaching lye containing acidic solution of titanyl sulfate, which is separated from the lye and then hydrolyzed to form hydrated titanium oxides further fired to produce desired titanium dioxide. Hydrolysis step is properly controlled to form hydrated titanium oxides with desired particle size distribution. |
 |
Method of production of titanium dioxide Proposed method includes leaching-out of titanium-containing materials with sulfuric acid solution for obtaining lye, deposition of ferrous sulfate from lye, extraction of titanyl sulfate from lye by means of solvent, hydrolysis of extracted titanyl sulfate followed by roasting of solid phase obtained at hydrolysis stage. At least part of raffinate from extraction stage is used as part of leaching solution at initial leaching-out stage. |
 |
Device for producing sponge titanium Device comprises retort-reactor provided with the bottom branch pipe and false bottom, lid that covers the reactor and is provided with the central branch pipe, fusible plug that is set in the branch pipe and is pressed to the branch pipe with a ring, nozzle made of a truncated cone, retort-condenser provided with the bottom branch pipe and false bottom, water jacket, and heat shield. The water jacket has opening in its top part and guiding ring for supplying water to the retort-condenser arranged under it. The height of the central branch pipe in the lid is 0.3-0.7 of the lid height, and the height of the pressing ring is 0.5-1.5 of the height of the central branch pipe. The nozzle is secured to the top part of the pressing ring. The larger base of the nozzle faces downward. |
|
Method involves stopping the process of feeding titanium tetrachloride and argon into reactor when drainage apparatus is depressurized; in case of depressurizing of drainage apparatus, creating and maintaining vacuum in reactor according to amount of melted magnesium, with vacuum extent being calculated from equation: V=(0.8-0.9)x(1-C)xHrxdmg, where V is vacuum in reactor, kgf/cm2; (0.8-0.9) is maximum level of magnesium in reactor, part; (1-C) is coefficient taking into account unused magnesium in the course of reduction process, part; Hr is height of reactor, cm; C is coefficient of utilization of magnesium, part; dmg is density of magnesium at temperature of 800 C, kgf/cm2. |
|
 |
Method for producing of spongy titanium and apparatus for performing the same Method involves heating reduction unit; melting condensate and draining condensate of magnesium chloride; feeding argon into unit and creating excessive pressure therein; discharging argon from said unit into vacuum-type crucible; pouring magnesium into unit from vacuum crucible under hermetically sealed mode while maintaining equal excessive pressure in unit and vacuum crucible; feeding titanium tetrachloride and providing reduction process while periodically pouring out magnesium chloride; after pouring out condensate of magnesium chloride, positioning magnesium level measuring device into branch pipe for feeding of titanium tetrachloride; pouring magnesium into device until magnesium comes into electric contact with electrode of level sensor; stopping feeding of magnesium when signal is generated by level indicator; removing level sensor from branch pipe and feeding titanium tetrachloride. Apparatus has reduction unit comprising retort with drain device, hermetical cover, titanium tetrachloride and argon feeding branch pipes positioned on cover, magnesium pouring branch pipe wherein drain pipe of vacuum crucible is located, compensating device, detachable magnesium level measuring device formed as signaling device and level sensor made in the form of electrode located within protective enclosure, said level sensor being positioned within titanium tetrachloride feeding branch pipe. Lower end of electrode is deepened into retort up to the level of magnesium so as to come into electric contact with it, and upper end of level sensor is connected to signaling device. Electrode is formed as rod made from stainless steel, its lower end is deepened by distance determined on the basis of ratio of distance from cover to magnesium level to diameter of apparatus of 1:(3.5-4.5). Protective enclosure for electrode is made from electrically isolating material such as asbestos on liquid glass. Retort is earthed relative to ground. Also, signaling device is provided with serviceability control button connected to power source. Signaling device has two signal lamps. |
 |
Method of production of titanium-containing product and device for realization of this method Proposed method is used in processing the ilmenite concentrate into ferro-titanium, highly titanous slag suitable for production or titanium sponge or pigment and into carbon-free iron suitable for fusion with metallic chromium into alloy used for production of tube or sheet stainless steel billets. Proposed method includes forming liquid metal substrate in melting unit, setting the substrate in rotation by means of electromagnetic field for forming of parabolic dimple to which titanium-containing burden is fed; this burden is molten for slag by energy of electromagnetic field and metals are reduced from slag oxides with the aid of reductant; reduced metals are fused together with substrate and slag is added with reductant oxide and metal and slag phases drained from melting unit. Portion of titanium-containing burden is delivered in two parts: first part is delivered to dimple for metal substrate formed from ferro-aluminum; during delivery of this part of portion, portion of fluor spar is molten in dimple for reduction of metals from oxides of first part of burden portion by substrate aluminum and fusing them with metal substrate which is lean in aluminum; aluminum oxide thus formed is dissolved in fluor spar to tolerable dissolving limit at temperature of molten fluor spar of 1600-1700°C. Fluor spar and dissolved aluminum oxide from melting unit are drained into ladle and are cooled to 1450°C for conversion of aluminum oxide into solid phase which is separated from molten fluor spar together with part of aluminum oxide remaining in it. After drainage of fluor spar and dissolved aluminum oxide on metal substrate whose chemical composition is changed, second part of burden portion is delivered and is molten; metal oxides in second part of burden portion are reduced by titanium of substrate; oxide forming free energy of these oxides is lesser than that of titanium oxide; thus, highly titanous slag is formed; 70-80% of metal phase lean in titanium is drained from melting unit. Titanium is reduced from oxide of slag remaining in melting unit and is fused together with remaining metal phase; aluminum oxide formed at reducing of titanium is fused together with fluor spar which is delivered to melting unit together with reductant. Then, fluor spar is fully drained from melting unit together with dissolved aluminum oxide, after which metal phase added with titanium is fully drained and substrate is immediately formed from ferro-aluminum in melting unit and procedure is repeated. |
 |
Proposed titanium sponge separator includes retort-reactor with false bottom and drain unit, cover with vacuum line, heat shield, retort-condenser with bottom branch pipe and with closed jacket provided with water distributor under its cover. Bottom branch pipe of retort-condenser is provided with drain unit which is sealed-up with cap. Besides that, drain unit welded to bottom branch pipe of retort-condenser is sealed-up with cap provided with sealant. Water is delivered to bottom of retort-condenser from distributor mounted on side surface of jacket. |
 |
Apparatus for magnesium-thermal production of titanium sponge Apparatus includes reduction unit having retort with bottom branch pipe to which flange of draining device is welded, false bottom, lid with branch pipe for pouring magnesium, unions for evacuating apparatus, measuring pressure and reducing argon pressure. On lid there is one central branch pipe for pouring magnesium and supplying titanium tetrachloride into which cone is welded. Titanium tetrachloride is fed along union passing through limiting member and welded into bushing fluid-tightly joined with said branch pipe. Rings of stand of false bottom are welded to elliptical bottom of retort by means of intermittent welded seam. Grid and stop of false bottom are fastened by means of plates rigidly secured to wall of retort. Thickness of lining of furnace hearth exceeds by 10 - 30% thickness of lining of cylindrical portion of furnace. Opening of furnace hearth is protected by means of shield. Shield is also mounted inside furnace over opening of furnace hearth; relation of shield outer diameter to opening diameter is in range 1.1 - 1.5. Shield having two dampers may be mounted outside furnace in casing of furnace hearth. |
 |
Titania-containing slag processing method Titania-containing blast-furnace slag processing comprises melting metallic substrate in melting chamber of melting unit, making substrate rotate by means of electromagnetic field generated by MHD-device of melting unit, forming parabolically shaped recess in the substrate, adding a portion of slag into recess, melting slag by electromagnetic energy transmitted to the slag through substrate, reducing metals, and melting them together with substrate metal. Reduction of titanium and other metals from their oxides having free energy lower than that of aluminum is effected in molten portions of slag with aluminum or ferroaluminum. These reduced metals contribute to metallic substrate. Thereupon, a fresh portion of slag is introduced into melting unit and titanium incorporated in the substrate reduces metals from their oxides contained in the fresh slag portion and having free energy lower than that of titanium. Titanium-reduced metals are melted together with metallic substrate and a predetermined amount thereof is poured out. The rest of metallic substrate is replenished with titanium reduced from slag phase with aluminum. Titanium-containing alloy is poured out from melting chamber in predetermined amount, after which, keeping alloy remaining in chamber rotating, all processed slag is discharged. After the notch is closed, rotation of the rest of alloy is stopped, metal plug is formed in the notch, and a fresh portion of slag is supplied in controlled mode while gradually forcing liquid metallic substrate to rotate in order to form parabolically shaped recess therein. From molten portion of slag, a portion of silicon is then reduced with titanium, after which all operations are repeated. |
Another patent 2513033.