Patent application number | Description | Published |
20120304823 | METHOD FOR PREPARING SPONGE TITANIUM FROM POTASSIUM FLUOTITANATE BY ALUMINOTHERMIC REDUCTION - The invention provides a method for preparing sponge titanium from potassium fluotitanate by aluminothermic reduction, comprising the following steps: a reaction step: aluminum and zinc are mixed under a vacuum state, and the mixture is then reacted with potassium fluotitanate; a distillation step: KF, AlF | 12-06-2012 |
20120304824 | TECHNOLOGICAL METHOD FOR PREPARING SPONGE TITANIUM FROM SODIUM FLUOTITANATE RAW MATERIAL - The invention provides a technological method for preparing sponge titanium from sodium fluotitanate raw material, comprising the following steps: step A: placing aluminum in an airtight resistance furnace, evacuating, introducing inert gas into the resistance furnace, and heating the aluminum to obtain molten aluminum; step B: opening a reactor cover, adding a proper amount of sodium fluotitanate into the reactor, closing the reactor cover, detecting leakage, slowly heating the reactor to 150° C., evacuating and continuously heating the reactor to 250° C.; step C: introducing inert gas into the reactor, continuously heating the reactor to 900° C., and stirring uniformly; step D: opening a valve, adjusting the stirring speed, dripping the molten aluminum, and controlling the temperature of reaction in a range from 900 to 1000° C.; and step E: opening the reactor cover, removing a stirring device out of the reactor, and eliminating NaAlF | 12-06-2012 |
20120304825 | PROCESS FOR PRODUCING SPONGE TITANIUM - The present invention provides a process for producing sponge titanium, which includes the following steps: Step A: placing aluminum into a resistance furnace, vacuum pumping, introducing inert gas, heating to molten aluminum; Step B: opening a reactor cover, adding a proper amount of potassium fluotitanate to a reactor, leakage detecting after closing the reactor cover, slowly raising the temperature to 150° C., vacuum pumping, and continuously heating to 250° C.; Step C: introducing inert gas into the reactor, continuously raising the temperature to 750° C., stirring uniformly; Step D: opening a valve to adjust the stirring speed, adding molten aluminum drops, and controlling the reaction temperature to 750° C. to 850° C.; Step E: opening the reactor cover, removing a stirring device, eliminating the upper layer of KAlF | 12-06-2012 |
20120304826 | METHOD FOR PREPARING SPONGE TITANIUM FROM SODIUM FLUOTITANATE BY ALUMINOTHERMIC REDUCTION - The invention provides a method for preparing sponge titanium from sodium fluotitanate by aluminothermic reduction, comprising the following steps: a reaction step: aluminum and zinc are mixed under a vacuum state, and sodium fluotitanate is then added into the mixture for reaction; a separation step: the product resulting from the complete reaction stands still and is then introduced with inert gas, and NaF and AlF | 12-06-2012 |
20120306129 | REACTION EQUIPMENT FOR PRODUCING SPONGE TITANIUM - The present invention provides a piece of reaction equipment for producing sponge titanium, which includes a reactor and a reactor cover with a stirring device, wherein a sealing ring is arranged between the reactor cover and the reactor, one side of the reactor cover is provided with a lifting device for controlling the lifting of the reactor cover, a resistance furnace is arranged above the reactor cover, a valve is arranged below the resistance furnace, and a vacuum-pumping pipe and an inflation pipe are arranged above the reactor cover. The present invention has the beneficial effects that the production equipment can ensure normal production, and effectively ensures the quality of sponge titanium product; compared with the prior art, the equipment has low cost, environmental protection and harmlessness during production. | 12-06-2012 |
20120306131 | DISTILLATION EQUIPMENT FOR PRODUCING SPONGE TITANIUM - The present invention provides a piece of distillation equipment for producing sponge titanium, which includes a heating furnace and a reactor for containing a condensate, wherein a heating furnace cover is arranged above the heating furnace, a reactor cover is arranged above the reactor, the heating furnace cover is connected with the reactor cover by a pipe, a resistance wire is arranged on the pipe, each lifting device is arranged above the heating furnace cover and the reactor cover, a vacuum-pumping pipe is arranged above a heater cover, and a first metal sealing ring is arranged between the reactor cover and the reactor. The present invention has the beneficial effects that the distillation equipment can ensure normal production, and effectively ensure the quality of sponge titanium product. The problem of distillation tube blockage is solved by adopting a metal gasket. | 12-06-2012 |
20120308430 | SEALING RING AND PREPARATION METHOD THEREOF - The present invention provides a sealing ring and a preparation method thereof. The sealing ring, based on percent by weight, includes 80%-85% of aluminum, 10%-15% of titanium, 0.1%-1% of scrap iron, and 4%-4.9% of potassium fluoroaluminate. Moreover, the present invention provides a method for preparing sealing ring, which includes the following steps: Step A: melting the aluminum in a medium-frequency induction furnace, adding the potassium fluoroaluminate to the medium-frequency induction furnace after melting the aluminum, melting and stirring the mixture evenly; Step B: adding titanium scrap or sponge titanium, and scrap iron to the mixture successively, melting and mixing the mixture totally at 800° C. to 1200° C., standing the mixture after stirring evenly; Step C: removing scum on the surface; Step D: casting into a mould to obtain a final sealing ring. | 12-06-2012 |
20120321522 | ZERO POLLUTION RECOVERY SYSTEM FOR SAFELY PRODUCING ANHYDROUS FLUORINE HYDRIDE - The present invention provides a zero pollution recovery system for safely producing anhydrous fluorine hydride, comprising: a compartment, a reactor for producing fluorine hydride, and a water pool; the reactor is disposed in the compartment; the water pool is disposed at the bottom of the compartment; absorption hoods are respectively disposed above both ends of the reactor for absorbing fluorine hydride gas; at least two absorption towers mutually connected in series via pipes are disposed above the compartment; water pipes connected with the water pool are respectively disposed at the top and bottom of the absorption tower; and a cooler and a receiver connected with the water pool is disposed on the pipes. The present invention has the advantages of being able to control the range over which fluorine hydride can diffuse. | 12-20-2012 |
20130091988 | METHOD FOR PRODUCING METAL ZIRCONIUM INDUSTRIALLY AND PRODUCING LOW-TEMPERATURE ALUMINUM ELECTROLYTE AS BYPRODUCT - The invention provides a preparation method for producing metal zirconium industrially and producing low-temperature aluminum electrolyte as byproduct, which comprises the following steps: A) aluminum and fluorozirconate are put in a closed reactor, inert gas is fed into the reactor after evacuation, the reactor is heated up to 780° C. to 1000° C. and then the mixture in the reactor is stirred rapidly; and B) after reaction continues for 4 to 6 hours, the liquid molten at the upper layer is sucked out to obtain low-temperature aluminum electrolyte, and the product at the lower layer is subjected to acid dipping or distillation to remove surface residue to obtain metal zirconium. | 04-18-2013 |
20130092550 | LOW-MOLECULAR-RATIO CRYOLITE FOR ALUMINIUM ELECTROLYTIC INDUSTRY AND METHOD FOR PREPARING THE SAME - The disclosure provides low-molecular-ratio cryolite for aluminium electrolytic industry, which consists of potassium cryolite and sodium cryolite with a mole ratio of 1:1˜1:3, wherein the molecular formula of the potassium cryolite is mKF.AlF | 04-18-2013 |
20130092551 | ELECTROLYTE SUPPLEMENT SYSTEM IN ALUMINIUM ELECTROLYSIS PROCESS AND METHOD FOR PREPARING THE SAME - The disclosure provides an electrolyte supplement system in an aluminium electrolysis process, which includes low-molecular-ratio cryolite, wherein the low-molecular-ratio cryolite is selected from mKF.AlF | 04-18-2013 |
20130092552 | POTASSIUM CRYOLITE FOR ALUMINUM ELECTROLYSIS INDUSTRY AND PREPARATION METHOD THEREOF - The invention provides a potassium cryolite for aluminum electrolysis industry, which has a molecular formula: mKF.AlF | 04-18-2013 |
20130095020 | CYCLIC PREPARATION METHOD FOR PRODUCING TITANIUM BORIDE FROM INTERMEDIATE FEEDSTOCK SODIUM-BASED TITANIUM-BORON-FLUORINE SALT MIXTURE AND PRODUCING SODIUM CRYOLITE AS BYPRODUCT - A cyclic preparation method for producing titanium boride from intermediate feedstock sodium-based titanium-boron-fluorine salt mixture and producing sodium cryolite as byproduct, which comprises the steps: a) boric acid or boric anhydride is added with hydrofluoric acid and then with sodium carbonate solution for concentration and crystallization to generate sodium fluoborate; titanium-iron concentrate is added with hydrofluoric acid and then with sodium carbonate and sodium hydroxide to obtain sodium fluotitanate; B) the sodium fluoborate is mixed with the sodium fluotitanate, and the mixture reacts with aluminum to generate titanium boride and sodium cryolite; C) the sodium cryolite is sucked out and then fed into a rotary reaction kettle together with concentrated sulfuric acid, hydrogen fluoride gas as well as sodium sulfate and sodium aluminum sulfate are generated by reaction in the rotary reaction kettle, and the hydrogen fluoride gas is collected and then dissolved in water to obtain hydrofluoric acid aqueous solution; and D) the obtained hydrofluoric acid aqueous solution is recycled. | 04-18-2013 |
20130095021 | CYCLIC PREPARATION METHOD FOR PRODUCING TITANIUM BORIDE FROM INTERMEDIATE FEEDSTOCK POTASSIUM-BASED TITANIUM-BORON-FLUORINE SALT MIXTURE AND PRODUCING POTASSIUM CRYOLITE AS BYPRODUCT - A cyclic preparation method including the following steps: a) boric acid or boric anhydride is added with hydrofluoric acid and then with potassium sulfate for reaction to generate potassium fluoborate; titanium-iron concentrate is added with hydrofluoric acid and then with potassium sulfate for reaction to generate potassium fluotitanate; B) the potassium fluoborate is mixed with the potassium fluotitanate, and the mixture reacts with aluminum to generate titanium boride and potassium cryolite; C) the potassium cryolite is sucked out and then fed into a rotary reaction kettle together with concentrated sulfuric acid, hydrogen fluoride gas as well as potassium sulfate and potassium aluminum sulfate are generated by reaction in the rotary reaction kettle, and the hydrogen fluoride gas is collected and then dissolved in water to obtain hydrofluoric acid aqueous solution; and D) the obtained hydrofluoric acid aqueous solution and potassium sulfate aqueous solution are recycled. | 04-18-2013 |
20130095022 | PREPARATION PROCESS OF TRANSITION METAL BORIDE AND USES THEREOF - The invention provides a preparation process of transition metal boride, comprising the following steps: A) aluminum is put in a reactor, inert gas is fed into the reactor after evacuation, the reactor is heated up to 700 to 800° C. and then added with dry potassium fluoborate or sodium fluoborate, monomer boron and cryolite are generated by rapid stirring and reaction for 4 to 6 hours, and the molten liquid at the upper layer is sucked out and the monomer boron is obtained by means of separation; and B) the obtained monomer boron is added with transition metal for reaction at the temperature from 1800 to 2200° C. in order to generate corresponding transition metal boride. | 04-18-2013 |
20130095023 | METHOD FOR CYCLICALLY PREPARING MONOMER BORON AND COPRODUCING POTASSIUM CRYOLITE USING POTASSIUM FLUOBORATE AS INTERMEDIATE MATERIAL - A method for cyclically preparing monomer boron and coproducing potassium cryolite using potassium fluoborate as an intermediate material, which includes following steps: A) adding hydrofluoric acid to boric acid or boron oxide to enable a reaction to form fluoboric acid; B) adding a potassium sulphate aqueous solution to the fluoboric acid to enable a reaction to form the potassium fluoborate; C) putting the potassium fluoborate into a reactor, adding aluminium to react with the potassium fluoborate to form the monomer boron and potassium cryolite; D) extracting the potassium cryolite, sending the potassium cryolite to a rotary reaction kettle together with concentrated sulphuric acid to enable a reaction to form hydrogen fluoride gas and aluminium potassium sulphate, potassium sulphate, collecting the hydrogen fluoride gas and dissolving it into water to obtain the hydrofluoric acid; E) recycling the obtained hydrofluoric acid to Step A to leach the boric acid or boron oxide. | 04-18-2013 |
20130095024 | METHOD FOR CYCLICALLY PREPARING MONOMER BORON AND COPRODUCING SODIUM CRYOLITE USING SODIUM FLUOBORATE AS INTERMEDIATE MATERIAL - A method for cyclically preparing monomer boron and coproducing sodium cryolite using sodium fluoborate as an intermediate material, which includes the following steps: A) adding hydrofluoric acid to boric acid or boron oxide to enable a reaction to form fluoboric acid; B) adding a sodium carbonate aqueous solution to the fluoboric acid to enable a reaction to form the sodium fluoborate; C) putting the sodium fluoborate into a reactor, adding aluminium to react with the sodium fluoborate to form the monomer boron and sodium cryolite; D) extracting the sodium cryolite, sending the sodium cryolite to a rotary reaction kettle together with concentrated sulphuric acid to enable a reaction to form hydrogen fluoride gas and aluminium sodium sulphate, collecting the hydrogen fluoride gas and dissolving it into water to obtain the hydrofluoric acid; E) recycling the obtained hydrofluoric acid to Step A to leach the boric acid or boron oxide. | 04-18-2013 |
20130098206 | METHOD FOR CYCLICALLY PREPARING TITANIUM SPONGE AND COPRODUCING SODIUM CRYOLITE USING SODIUM FLUOTITANATE AS INTERMEDIATE MATERIAL - A method for cyclically preparing titanium sponge and coproducing sodium cryolite using sodium fluotitanate as an intermediate material, which includes the following steps: A) adding hydrofluoric acid to titaniferous iron concentrate to enable a reaction to form fluotitanic acid; B) adding sodium carbonate and sodium hydroxide to the fluotitanic acid to enable a reaction to form the sodium fluotitanate; C) putting the sodium fluotitanate into a reactor, adding aluminium to react with the sodium fluotitanate to form the titanium sponge and sodium cryolite; D) extracting the sodium cryolite and sending it to a rotary reaction kettle together with concentrated sulphuric acid to enable a reaction to form hydrogen fluoride gas and sodium sulphate, aluminium sodium sulphate; collecting the hydrogen fluoride gas and dissolving it into water to obtain a hydrofluoric acid solution; E) recycling the obtained hydrofluoric acid to Step A to leach the titaniferous iron concentrate. | 04-25-2013 |
20130098207 | METHOD FOR CYCLICALLY PREPARING TITANIUM SPONGE AND COPRODUCING POTASSIUM CRYOLITE USING POTASSIUM FLUOTITANATE AS INTERMEDIATE MATERIAL - A method for cyclically preparing titanium sponge and coproducing potassium cryolite using potassium fluotitanate as an intermediate material, which includes the following steps: A) adding hydrofluoric acid to titaniferous iron concentrate to enable a reaction to form fluotitanic acid; B) adding potassium sulphate to the fluotitanic acid to enable a reaction to form the potassium fluotitanate; C) putting the potassium fluotitanate into a reactor, adding aluminium to react with the potassium fluotitanate to form the titanium sponge and potassium cryolite; D) extracting the potassium cryolite and sending it to a rotary reaction kettle together with concentrated sulphuric acid to enable a reaction to form hydrogen fluoride gas and potassium sulphate, aluminium potassium sulphate; collecting the hydrogen fluoride gas and dissolving it into water to obtain a hydrofluoric acid aqueous solution; E) recycling the obtained hydrofluoric acid aqueous solution to Step A to leach the titaniferous iron concentrate. | 04-25-2013 |
20130115370 | PROCESS FOR PREPARING INERT ANODE MATERIAL OR INERT CATHODE COATING MATERIAL FOR ALUMINIUM ELECTROLYSIS - The disclosure provides a process for preparing an inert anode material or inert cathode coating material for aluminium electrolysis, which includes the following steps: A) putting aluminium into a reactor, injecting an inert gas to the reactor after vacuumizing, adding the mixture of dried fluoborate and fluorotitanate in the reactor to enable a reaction to form titanium boride and cryolite, and isolating the titanium boride; and B) melting the obtained titanium boride with a carbon material, tamping the melt liquid on a carbon cathode surface, sintering the carbon cathode surface to form the inert cathode coating material for aluminium electrolysis; or, mixing the obtained titanium boride with the carbon material evenly, then high-pressure moulding the mixture, and finally sintering the moulded mixture at a high temperature to form the inert anode material for aluminium electrolysis. | 05-09-2013 |
20140131214 | LOW-MOLECULAR-RATIO CRYOLITE FOR ALUMINIUM ELECTROLYTIC INDUSTRY AND METHOD FOR PREPARING THE SAME - The disclosure provides low-molecular-ratio cryolite for aluminum electrolytic industry, which consists of potassium cryolite and sodium cryolite with a mole ratio of 1:1˜1:3, wherein the molecular formula of the potassium cryolite is mKF.AlF | 05-15-2014 |
20140131215 | ELECTROLYTE SUPPLEMENT SYSTEM IN ALUMINIUM ELECTROLYSIS PROCESS AND METHOD FOR PREPARING THE SAME - The disclosure provides an electrolyte supplement system in an aluminium electrolysis process, which includes low-molecular-ratio cryolite, wherein the low-molecular-ratio cryolite is selected from mKF.AlF | 05-15-2014 |
20140131216 | POTASSIUM CRYOLITE FOR ALUMINUM ELECTROLYSIS INDUSTRY AND PREPARATION METHOD THEREOF - The invention provides a potassium cryolite for aluminum electrolysis industry, which has a molecular formula: mKF.AlF | 05-15-2014 |
20140134090 | PREPARATION PROCESS OF TRANSITION METAL BORIDE AND USES THEREOF - The invention provides a preparation process of transition metal boride, comprising the following steps: A) aluminum is put in a reactor, inert gas is fed into the reactor after evacuation, the reactor is heated up to 700 to 800° C. and then added with dry potassium fluoborate or sodium fluoborate, monomer boron and cryolite are generated by rapid stirring and reaction for 4 to 6 hours, and the molten liquid at the upper layer is sucked out and the monomer boron is obtained by means of separation; and B) the obtained monomer boron is added with transition metal for reaction at the temperature from 1800 to 2200° C. in order to generate corresponding transition metal boride. | 05-15-2014 |
20140138254 | SODIUM CRYOLITE FOR ALUMINUM ELECTROLYSIS INDUSTRY AND PREPARATION METHOD THEREOF - The invention provides a sodium cryolite for aluminum electrolysis industry, which has a molecular formula: mNaF.AlF | 05-22-2014 |
20150041095 | ALUMINUM-ZIRCONIUM-TITANIUM-CARBON GRAIN REFINER FOR MAGNESIUM AND MAGNESIUM ALLOYS AND METHOD FOR PRODUCING THE SAME - The present invention pertains to the field of metal alloy, and discloses an aluminum-zirconium-titanium-carbon grain refiner for magnesium and magnesium alloys, having a chemical composition of: 0.01%˜10% Zr, 0.01%˜10% Ti, 0.01%˜0.3% C, and Al in balance, based on weight percentage. Also, the present invention discloses the method for preparing the grain refiner. The grain refiner according to the present invention is an Al—Zr—Ti—C intermediate alloy having great nucleation ability and in turn excellent grain refining performance for magnesium and magnesium alloys, and is industrially applicable in the casting and rolling of magnesium and magnesium alloy profiles, enabling the wide use of magnesium in industries. | 02-12-2015 |