Titanium slag processing |
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IPC classes for russian patent Titanium slag processing (RU 2522876):
 Foundry alloy / 2521916
Invention relates to foundry and can be used for production of high-strength iron with globular graphite without structurally free cementite as-cast. Proposed alloy contains the following substances, in wt. %: rare earth metals - 10-20, silicon - 20-30, scandium - 1-3, aluminium making the rest. Foundry alloy comprises 1-3 wt. % of lanthanum in rare earth metal compound.
Conditioning agent / 2521915
Invention relates to foundry and can be used for production of high-strength iron with globular graphite without structurally free cementite as-cast based on metalised pellets and steel wastes. Proposed agent contains components in the following ratio in wt. %: cerium - 7-10, lanthanum - 3.5-5.0, yttrium - 15-20, aluminium making the rest.
 Chemical-electric method for production of aluminium-zirconium master alloys / 2515730
In the method anode galvanostatic polarisation of zirconium with current density of 0.5-4.0 mAcm-2 is carried out within 1-5 hours in the melted chlorides of alkali metals or a mixture of chlorides of alkali metals and alkali-earth metals, which contain melted aluminium or aluminium-magnesium alloy at a temperature of 700-750°C in argon environment.
Method for obtaining aluminium-scandium alloy combination / 2507291
Method for obtaining aluminium-scandium alloy combination involves aluminium melting, aluminothermic reduction of scandium from initial charge containing scandium fluoride, calcium chloride and sodium fluoride under cover flux and further exposure of the obtained molten metal. Prior to aluminothermic reduction the initial charge is placed into a melting pot and pre-heated to the temperature of 790°C, and then, it is added to molten aluminium and aluminothermic reduction is performed at the temperature of at least 830°C. After the molten metal exposure, separate pouring of salt and metal melt is performed. An initial charge containing the following component ratio, wt %, is used: scandium fluoride - 40-45; potassium chloride - 40-45; sodium fluoride is the rest. Pre-heating of the initial charge can be performed in a graphite melting pot pre-saturated with cryolite, or in a melting pot from glass carbon.
Modifying alloying bar al-sc-zr / 2497971
Alloying bar contains the following, wt %: scandium 0.8-1.5, zirconium 0.8-1.5; at least one of the following elements: manganese up to 0.10, chrome up to 0.10, titanium up to 0.10, molybdenum up to 0.10, iron up to 0.30, silicon up to 0.20, and aluminium is the rest.
 Method for obtaining titanium-containing alloy for steel alloying / 2497970
Reaction powder mixture containing 45-88 wt % of titanium-containing component and 12-55 wt % of silicon-containing component is prepared. Powders with particle size of less than 5 mm are used. After that, an exothermic reaction of combustion in inert atmosphere is initiated in the mixture.
Method to produce aluminium-copper alloys / 2486271
Aluminium alloy is prepared, reheated over alloy liquidus curve temperature. Copper is added into the aluminium melt in the form of a wire, at the same time electric current is sent between the wire and the melt. Wire melting is carried out without formation of an arc at the ratio of current density to speed of wire feed equal to 0.3-1.0·1010 A·s/m.
 Alloy of out-of-furnace production of steel and iron and blend to this end / 2483134
Proposed composition contains the following substances, in wt %: titanium - 30- 50, zirconium - 1-25, silicon - 15-30, aluminium - 0.1-3, iron making the rest. For production of proposed alloy the blend is used that contains ilmenite concentrate, rutile, coal, quartz sand, quartzite, and zirconium concentrate.
Alloy for alloying of steel with titanium / 2482210
Alloy contains the following components, wt %: titanium 45-75, silicon 5-45, aluminium 5-15, carbon not more than 0.2, iron - balance, at the same time the mass ratio of titanium to aluminium is within the limits from 3:1 to 15:1.
Method for production of aluminium-zirconium ligature (versions) / 2482209
For production of aluminium-zirconium ligature, aluminothermal recovery of zirconium is carried out from its compounds in the environment of melted metal halogenides. Zirconium is recovered from its fluoride or oxide, and also from fluozirconate or oxifluozirconate of alkaline or alkaline-earth metal in presence of potassium chloride, sodium fluoride and aluminium fluoride, introduced into the melt or formed in the process of aluminothermy. The temperature of the process amounts to 850-1150°C. Recovery is carried out under the layer of chloride cover flux, containing potassium and sodium chlorides at the following ratio of components, in the mixture, wt %: potassium chloride 42-45, sodium chloride - balance. The melt is soaked for 15-30 minutes, and bars are poured. The invention makes it possible to produce bars of ligature with homogeneous structure with dimensions of intermetallides of up to 15-30 mcm, at the same time non-return losses of zirconium are reduced down to 7-9%, environmental characteristics of the process are improved.
 Aluminium slag processing / 2518805
Invention relates to processing of aluminium slags. Proposed method comprises processing of aluminium slags in electroslag furnace including crucible with bottom cathode and top anode. Cryolite (Na3AlF6) and aluminium oxide (Al2O3) are fed into said crucible and fused therein. Then, crushed aluminium slag, a mechanical mix of Al2O3 and aluminium metal, and cryolite are loaded in electrolyte liquid melt with subsequent melting and dissolution in electrolyte. Note here that melting and dissolution of aluminium slag occur at 1100-2000°C. Precipitation of liquid aluminium metal occurs in the area of bottom cathode. Note that precipitation of liquid secondary slag composed of the mix cryolite with aluminium oxide occurs in the area of anode. Thereafter, aluminium and secondary slag are unloaded.
 Production of titanium oxinitride-based inorganic material / 2518363
Production of titanium oxinitride TiN0.35-0.7O0.4-0.6 comprises combustion of titanium-bearing charge in self-propagating high-temperature synthesis in nitrogen at 40-150 atm. Said titanium-bearing charge is composed by titanium production wastes as titanium fire cutting minced slag and that of its alloy of minus 0.5 mm fraction containing titanium, nitrogen, oxygen and mechanical impurities of titanium oxides. On using the titanium fire cutting minced slag and its alloys containing more than 5 wt % of titanium oxide mechanical impurities, additionally titanium chips or its alloys or titanium powder are added to the charge in amount of 0.5-1 portions with respect to excess amount of titanium oxide mechanical impurities in the charge.
Method to extract metals from silicate slags / 2515735
Method includes grinding of slag and leaching. To prevent formation of non-filtered pulps, specified for gel formation of silicic acid, slag is previously mixed with concentrated acid (nitric or hydrochloric), taken in quantities necessary to neutralise slag, pulp is maintained for 1-2 hours. At the same time precious components are leached, and the produced silicic acid coagulates, forming large agglomerates. After this the mass is additionally ground and leached with water. At the stage all salts are washed into the solution, and gels are not produced. Further the solution is separated by filtration or whirling and processed by available hydrometallurgical methods, and the hard silicate product is sent to a dump.
Method of producing vanadium pentoxide from vanadium-containing slag / 2515154
Invention relates to extraction of pure vanadium pentoxide from slag obtained during production thereof. The method involves taking ground vanadium-containing slag, fusion thereof with sodium hydroxide to obtain sodium metavanadate. The sodium metavanadate is then leached with water and the solution is separated from the solid phase. The obtained solution is then mixed with an inorganic acid to achieve pH≤4 and a sorbent is added, the sorbent used being powdered coal which is modified with cation-active nitrogen-containing surfactants. After the sorption process, the spent sorbet is separated from the liquid phase, dried and calcined at temperature of 600-640°C to obtain pure vanadium pentoxide. The cation-active nitrogen-containing surfactants used are, for example, lauryl dimethylbenzyl ammonium chloride, cetylpyridinium chloride and polyhexamethylene guanidine hydrochloride.
Method of nickel production dump converter slags processing with production of semi-finished nickel for fabrication of "20ХН2М" and "20Н2М" steels / 2514750
Invention relates to metallurgy. Proposed method comprises crushing of said slag in ball mill and screening it by means of screen with mesh dimension of 1 mm. Steel 20 blanks are machined to produce 1 mm deep chips to be dipped for 1-2 minutes in bath with diluted hydrochloric acid. Said chips are flushed and dried to moist removal. 10-20 wt % of chips are mixed with 80-90 wt % of screened dump converter slag to add over 100 wt % some 2-5 wt % of salmiac. Then, produced mix is laid in container made of container of refractory steel with fusible gate. Container is heated to 1050-1100°C and cured thereat for 4-6 hours. Container is cooled down and broken down. Chips are removed by magnetic separation, screed and pelletised. Then, they are smelted in arc furnace and cast to semi-finished ingots. Said semi-finished ingots can be used for production of steels "20ХН2М" and "20Н2М".
 Processing method of high-aluminous slags of aluminothermic production of ferroalloys / 2511556
Invention relates to mining, metallurgical and building industries and can be used at utilisation of slags of ferroalloy industry. A slag crushing method is implemented till the fraction of -10.0+0.0 mm with its further screening into three fractions: -10.0+1.0 mm, -1.0+0.315 mm and -0.315+0.0 mm; with that, fraction of -10.0+1.0 mm is subject to additional crushing and returned for screening, then each of two fractions: -1.0+0.315 mm and -0.315+0.0 mm is separately dried, and then two separated flows are first subject to electric separation with separation into conducting and non-conducting fractions; then, each of the obtained fractions is subject subsequently first to low-magnetic, and then to high-magnetic separation with extraction of a high-magnetic fraction in the form of iron scrap and large and small fractions of a metal phase of ferroalloys and extraction of non-magnetic non-conducting fraction in the form of a high-aluminous concentrate.
Extraction method of nickel and cobalt from waste convertor slags of nickel manufacturing plant / 2499064
Method involves chemical heat treatment of slags containing 0.4-1% of nickel and 0.2-0.9% of cobalt in the form of oxides and 2-10% of sulphur. Processing is performed in a mixture with steel low-carbon chips obtained after the turning process and ammonium chloride or chlorides of alkali metals or their mixture at the temperature of 1050-1100°C for formation of gaseous nickel and cobalt chlorides and performance of an exchange reaction. As a result of the reaction, nickel and cobalt are deposited from gaseous phase, diffuse inwardly and dope low-carbon steel chips that are further remolten in induction furnaces so that an alloy containing 0.9-1.7% of nickel and 0.3-0.8% of cobalt, and iron that is the rest, is obtained. As a result, an alloy is obtained, the sulphur content of which does not exceed it content in initial metal of low-carbon steel chips.
 Device for nonferrous metal hot slag compression / 2494157
Proposed device comprises the frame with slag compression head, mould for collection of compressed metal with slag output device, pipe to feed vacuum to the latter via through opening made in mould side wall, and seal arranged in clearance between slag output device and mould. Note here that slag compression head has ribbed outer surface while slag output device bottom has one or several through drain holes and/or open pores. A seal may be arranged between compression head and slag output device. Said slag output device inner surface facing the slag can have one or several ribs. Hollow head may be furnished with two or more air-cooled pipes. Slag output device and/or head may be equipped with vibrator. This device may incorporate one or several magneto hydrodynamic pumps to force metal to said one or several drain holes and/or open pores.
Method to process salt aluminium-containing slags to produce flux covers and aluminium process alloys / 2491359
Method includes grinding, crushing, water leaching of slag, pulp filtration, evaporation of a salt solution, drying of an oxide residue and its electrolysis. Oxide residue is loaded into an electrolytic cell 6÷8 times per day, in amount of 3.1÷4.9% of the electrolyte mass, dissolved in a fluoride electrolyte containing NaF and AlF3 with cryolite ratio of 1.8÷2.2, and electrolysis is carried out to produce a process alloy, which contains the following, in wt %: Al - 83÷95, Si - 3÷12, Fe - 2÷5.
Method for treatment of dump salt slag in remelting of secondary wastes of aluminium and aluminium alloys / 2487180
Method includes charging of aluminium into a furnace after drain during remelting of secondary wastes of aluminium alloys in a rotor furnace onto the surface of hot salt slag in the furnace, cooled salt dump slag in the volume of 20-30% from rated volume of wastes in the furnace, mixing of cold and hot slag as the furnace rotates for 1-2 min and unloading of the slag into a reservoir.
 Method of depleting slags from smelting of oxidized nickel ores / 2244028
Claimed method comprises combining slags using extraction principle with number of extractions n approaching infinity. Depleting agent efficient in presence of reducing agent is selected from materials enriched with pyrite, pyrrotine, calcium sulfide, and calcium sulfate; metal and alloys mainly containing Si, Al, Fe, C, etc. as well as reducing and sulfidizing complexes consisting of sulfides, oxides, and reducing substances (C, Me). Carbonaceous reducers, utilized individually or in mixture, are any known carbonaceous reducers. Degree of metal Me recovery is in accordance with conventional extraction equation.
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FIELD: metallurgy. SUBSTANCE: this process comprises preparation of the charge by mixing the titanium-bearing slag with aluminium and calcium-bearing material. The latter represents calcium fluoride and calcium, of calcium fluoride and calcium oxide, or calcium fluoride and the mix of calcium and calcium oxide. Here, the ratio between titanium dioxide, aluminium powder and calcium and/or between calcium oxide and calcium fluoride makes 1:(0.58-1.62):(0.28-1.1):(0.09-0.32). Besides, it includes reducing fusion of said slag at 1450-1750°C and separation of the alloy from said slag. EFFECT: higher quality of the alloy and titanium extraction, better separation of the alloy from slag. 3 cl, 2 ex, 1 tbl
The invention relates to the field of metallurgy and can be used in the processing of such slag to obtain titanoalyuminidnykh alloys or ligatures. A method of refining slag production of ferrotitanium, comprising adding to the liquid or solid slag, limestone, quartzite powder of aluminum, iron ore, ferrosilicon and the recovery of oxides of metals by melting in furnace with obtaining silicotitanate containing 17-20% Ti, 18-24% Si, 25-30% Al, <0.35% of C, 0.02% S, 0.05% P, or ferrosilicon containing 20-35% Ti, 15-25% of Si, 2 to 8% Al, and high-alumina intermediate (Gasik M.I., Lyakishev I.L., Emlyn B. I. Theory and technology for the production of ferroalloys. M.: metallurgy, 1988, s-467). The disadvantages of this method are multi-stage, complex instrumentation process and the low complexity of the use of raw materials. There is a method of processing liquid titanicthe slag obtained in the processing of titaniferous magnetite ore, including placing it in the melting unit, which with the help of an electromagnetic field is created, the rotation of the liquid alloy, the reduction of the metallic oxides on the surface of a rotating liquid alloy at a temperature of 1750°C using as a metal reductant aluminum or ferrosilicon with the teachings of titanium-containing alloy and slag aluminum-silicon melt (RF Patent No. 2206630, IPC SW 33/00, SW 37/00, publ. 20.06.2003). The disadvantages of this method are the high cost and high power consumption of the process. The closest to the essential features is the way vysokotekhnologicheskoi ligatures, which are obtained after melting and recovery of ilmenite concentrate slag containing titanium oxide, restore melter Assembly aluminum at a temperature of 1600 To 1800°C with the introduction of calcium oxide to its content of 20-30% with obtaining vysokotekhnologicheskoi ligatures and slag containing oxides of aluminum and calcium, and separate the ligature from slag (RF Patent No. 2250271, IPC SS 35/00, 38/14, publ. 20.04.2005). The disadvantages of this method are: - not enough high quality alloy due to high concentration in the alloy of oxygen (>4%), nitrogen (>1%) and, respectively, non-metallic inclusions due to the high affinity of titanium for oxygen; - low extraction of titanium oxides in titanomagniyevij alloy; - problems of separation of metal and slag phases. The technical result of the invention is to improve the quality of the alloy and the extraction of titanium in the alloy, the improvement of the separation process of the alloy and slag. This result is achieved by utilizing open source is about processing of titanium slag, including reductive smelting of titanium containing slag with aluminum and calcium-containing material and the separation of the alloy from the slag, characterized in that as the calcium-containing material using a calcium fluoride and calcium, or calcium fluoride and calcium oxide, or calcium fluoride and a mixture of calcium and calcium oxide while maintaining the mixture ratio of titanium dioxide: aluminum, calcium and/or calcium oxide:calcium fluoride by weight 1:(0,58-1,62):0,28-1,1):(0,09-0,32), and reductive smelting is carried out at a temperature 1450-1750°C. the oxide titanium containing slag use titanium containing slag from the production of ferrotitanium, smelting titaniferous magnetite ore in the electric or blast furnace. The use of calcium-containing material of calcium fluoride with calcium oxide, calcium or mixtures thereof allows selective transfer in titanomagniyevij alloy titanium and limit the transfer of oxygen and nitrogen. Maintaining the claimed ratio between titanium dioxide, alumina, calcium and/or calcium oxide and calcium fluoride provides, on the one hand, the maximum degree of extraction of titanium in titanomagniyevij alloy when recovering titanium dioxide from the source of the slag and the formation of low-melting movable slag system and, on the other hand, forcing the regime process is reductive smelting, the decrease in total mass of dross and savings of blended materials and energy. The restoration melting at 1450-1750°C allows you to get in alloys intermetallic compounds of TixAlycharacterized by strong internal chemical bonds, which provides a high content of titanium in the alloy. The resulting secondary oxide intermediate - alumosilicates slag can be used for subsequent production of high quality cement. Maintaining the ratio of titanium, aluminum, calcium fluoride, calcium and/or calcium oxide in the charge below the proposed limits are not possible to achieve a high extraction of titanium in titanomagniyevij alloy. Maintaining the amounts of titanium, aluminum, calcium fluoride, calcium and/or calcium oxide in the charge above the proposed limits will not improve the degree of extraction in titanomagniyevij the titanium alloy and leads to a decrease in the titanium alloy to 30%, and unnecessary transition in this alloy, oxygen and nitrogen. The proposed method is as follows: preparing a mixture by mixing a titanium containing slag (titanium containing slag from the manufacture ferrotitanium, smelting titaniferous magnetite ore in the electric or blast furnace) with aluminum, calcium and/or calcium oxide, calcium fluoride, while maintaining the ratio between them on mA is CE 1:(0,58-1,62):(0,28-1,1):(0,09-0,32) are rebuilding the melting of the charge in the air or neutral atmosphere at temperatures 1450-1750°C in a resistance furnace, induction or arc furnaces, and then separated titanomagniyevij alloy from the slag. The claimed method is tested in laboratory conditions. Example 1. The charge weighing 150-200 g consisting of titanium containing slag ferrotitanium production, composition, %: 30,0 TiO2, 0,1 FeO, 51,0 Al2O3, 10,5 CaO, 4,0 MgO (grain size less than 1 mm), aluminium powder (particle size less than 0.1 mm), calcium oxide (CaO) and calcium fluoride (CaF2), mixed and then loaded into a corundum crucible installed in a laboratory resistance furnace, and melted at temperatures 1450-1600°C. the mass Ratio of TiO2:Al:CaO:CaF2varied 1:(0,5-1,65):(0,25-1,05):(0,08-0,35). After penetration of the melt mixture kept for 10-20 minutes at temperatures of 1400-1800°C and then together with the crucible was removed from the furnace and cooled in air. The total duration of the process did not exceed 30 minutes The results of experiments to obtain titanomagnievoe alloy is given in table. When the ratio of aluminum to titanium dioxide in the mixture is less 0,58 not achieved the degree of extraction in titanomagniyevij the titanium alloy more than 70% and increases the oxygen content in the alloy more than 1%. The implementation process with the ratio of aluminum to titanium dioxide in the charge more 1,62 does not contribute to increase the degree of extraction in titanomagniyevij the titanium alloy and the result in the decrease in the titanium alloy - less than 30%. These tables indicate that the carrying aluminothermic melting obtaining titanomagnievoe alloy containing more than 30% of Ti, at a controlled temperature in 1450-1750°C and the mass ratio of TiO2:Al:CaO:CaF2within 1:(0,58-1,62):(0,28-1,1):(0,09-0,32) provides (comparable to the prototype of the intensity process) increasing the degree of extraction of titanium in the target products - titanoecidae alloys (in comparison with the prototype 1.2-1.6 times), improving the quality of these alloys and receiving secondary oxide semi - alumosilicates slag suitable for the subsequent production of high quality cement. The oxygen content in titanoalyuminidnykh alloys significantly lower than in the method prototype. This provides a low content in alloys of Ti-Al nitrogen, which is important for the quality of the alloy, so in this case, virtually eliminated the formation of nitride inclusions. In these conditions, the extraction in titanomagniyevij alloy Ti amounted to 91.2 99.1 per cent. The oxygen content in the alloy was equal to 0.1 to 0.9%, and the nitrogen - 0,06-0,09%. Example 2. A mixture of 1 kg, consisting of titanium slag production of ferrotitanium, composition, %: 18.3 TiO2, 8.6 FeO, 62.0 Al2O3, 11.2 CaO, 4.0 SiO2, aluminium powder (particle size less than 0.1 mm), granules of calcium particle size of 0.1 to 0.2 mm and calcium fluoride, spesialis mass ratio TiO 2:Al:Ca:CaF2as of 1:0,65:0,5:0.15 and gradually loaded in a corundum crucible, set in an induction furnace and melted within 30-40 minutes. The temperature of the slag bath was 1600-1700°C. after the melting of the charge, the melt was kept for 15-20 minutes, then poured into the mold, cooled and perform the separation of the products of melting. The total duration of the melting process does not exceed 40 minutes In the obtained alloy containing, %: 32,1% Ti and 0.2% oxygen, 0.08% nitrogen. Removing the alloy Ti was 95,8%.
Example 3. The mixture (1.5 kg)consisting of a titanium containing slag blast-furnace production composition, wt.%: 17.9 TiO2, 0.6 Fe, 0.4 Mn, 15.4 Al2O3, 15.2 CaO, 38.6 SiO2(grain size less than 2 mm), aluminum grains (0.1-3.0 mm), granules of calcium particle size of 0.1 to 0.2 mm, calcium oxide and fluorspar (CaF 2), were mixed in the ratio of TiO2:Al:(Ca+CaO):CaF21:0,7:(0,1+0,9):0,15 and melted in two-electrode furnace with magnesite lining for 30-40 minutes. The temperature of the slag bath was 1500-1600°C. after the melting of the charge, the melt was kept for 15-20 minutes, then poured into the mold, cooled and perform the separation of the products of melting. The total duration of the melting process does not exceed 60 minutes resulted In an alloy with %: 36,7% Ti and 0.1% oxygen, 0.06 to 0.12% of nitrogen. Removing the alloy Ti was 93.8%. The proposed method can improve the quality titanomagnievoe alloy with a high degree of extraction of titanium from titanium containing slag and the improvement of the separation of the alloy and slag due to the formation of low-melting movable slag system. 1. A method of processing titanium slag, including the reduction smelting of titanium containing slag with aluminum and calcium-containing material and the separation of the alloy from the slag, characterized in that as the calcium-containing material using a calcium fluoride and calcium, or calcium fluoride and calcium oxide, or calcium fluoride and a mixture of calcium and calcium oxide while maintaining the mixture ratio of titanium dioxide:aluminum, calcium and/or calcium oxide:calcium fluoride by weight 1:(0,58-1,62):(0,28-1,1):(0,09-0,32), and rehabilitation PLA is ku is carried out at a temperature of 1450-1750°C. 2. The method according to claim 1, characterized in that as a titanium containing slag used slag from the production of ferrotitanium. 3. The method according to claim 1, characterized in that as a titanium containing slag used slag from the smelting of titaniferous magnetite ore in the electric or blast furnace.
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