505 results about "Titanium chloride" patented technology

The invention relates to an electrothermal film and a manufacturing method thereof, belonging to the technical field of semiconductor heating. The electrothermal film is mainly prepared by adopting stannic chloride, titanium tetrachloride, stannic chloride, titanium trichloride, ferric chloride, antimony trichloride, calcium chloride, potassium chloride, cadmium chloride, stannic dioxide, stannictetroxide, hydrofluoric acid, boric acid, ethanol, isopropyl alcohol and inorganic water. By adopting the above formula, the mixture is mixed, stirred and heated to prepare into electrothermal film treating fluid, a semi-finished product of the electrothermal film is obtained by spraying the electrothermal film treating fluid at negative pressure on the electrothermal film carrier, and then silveroxide slurry is coated on the semi-finished product of the electrothermal film for baking to form a finished product of the electrothermal film. The electrothermal film has reasonable proportion andsimple manufacturing process, can be manufactured into various electrothermal film heating devices, has a working temperature capable of being up to 500 DEG C, and has wider application range. The electrothermal film of the invention also has the function of far infrared radiation, can play a role of physical therapy and health care to human body, and can help improve the quality and output of agricultural products.

A sol solution containing poly(titanic acid) and a planar heterocyclic ligand is provided. Titanium dioxide (TiO₂) particles are formed by aging the sol solution at a temperature below about 140° C. The particles have metallocene-like Ti-complexes comprising the heterocyclic ligand and can be substantially in the anatase phase. The heterocyclic ligands can be triazole, tetrazole, or thiadiazole. The sol solution may be prepared by aging a precursor solution. The precursor solution may contain the heterocyclic ligands and a precursor for poly(titanic acid). The precursor may be titanium alkoxide or titanium chloride. The sol solution may also contain at least one of an organic acid, a base, and a surfactant. The aged sol solution may form a colloidal dispersion of the TiO₂ particles. A photo-catalytic and transparent film may be formed from the TiO₂ particles by depositing a layer of the colloidal dispersion on a support.

A method of fabricating a storage capacitor includes depositing a first titanium nitride layer on a dielectric layer using a chemical vapor deposition technique or an atomic layer deposition technique performed at a first temperature with reactant gases of titanium chloride (TiCl₄) gas and ammonia (NH₃) gas at a predetermined flow ratio and depositing a second titanium nitride layer on the first titanium nitride layer using a chemical vapor deposition process performed at a second temperature that is greater than the first temperature with reactant gases of titanium chloride (TiCl₄) gas and ammonia (NH₃) gas.

A process for the production of a photocatalytically active self-cleaning coated substrate, especially a glass substrate, which comprises depositing a titanium oxide coating on the surface of the substrate by contacting it with a fluid mixture containing a source of titanium and a source of oxygen, the substrate being at a temperature of at least 600° C. The coated surface has good durability, a high photocatalytic activity and a low visible light reflection. Most preferably the deposition temperature is in the range 645° C. to 7200° C. which provides especially good durability. The fluid mixture preferably contains titanium chloride and an ester, especially ethyl acetate. Also disclosed is a self cleaning coated substrate, especially a glass substrate, having high photocatalytic activity and low visible light reflection and a durable self-cleaning coated glass.

This invention relates to a method to prepare mezoporous empty-centered titanium dioxide powders, which comprises following steps: titanium chloride is made into hydrosol with pure water, diluted and introduced into a spray dryer for spray drying. The subsequent product is empty-centered ball-shaped powder made up of nanosized titanium dioxide particles and the preceding titanium chloride is titanium tetrachloride or titanium trichloride. The titanium dioxide particles prepared in this invention all have mezoporous empty-centered ball-shaped structure and the empty-centered wall is made up of nanosized titanium dioxide particles and mezopores, on the surface of which titanium atoms possess a fraction of as high as 70%. As only titanium tetrachloride is adopted as precursor and no other reagent is necessary, the product is highly pure and has excellent photocatalytic properties. This method has the advantages of high yield, low cost, easily controlled technique and convenience for magnification experiment. Besides, there are not severe requirements for facilities and this method is suitable for industrial production.

The invention discloses a making method of ultraviolet masking agent of sericite mica, which comprises the following steps: 1) preparing fined sericite mica; 2) activating the sericite mica powder; 3) adding water in the sericite mica to form the suspension with density at 2. 5-5%; adjusting the pH value to 2. 0-2. 5 through alcaine as system C; 4) allocating titanic chloride solution with density at 10-15%; adding zinc chloride in the titanic chloride solution; making the molar rate of Zn and Ti at 1: 2; obtaining the solution D; 5) dripping the solution D into the system D; controlling the pH value to 7. 0; 6) filtering the sediment; washing; drying at 95 deg. c; 7) grinding the drier; placing the drier in the electric furnace at 600 deg. c for 2-3h; 8) grinding the sintered material; beating to 10-15um; obtaining the product.

Method of refining titanium tetrachloride by using aluminium powder and vash oil mixture. The method is refining of coarse titanium tetrachloride containing high content of vanadium impurities. Mixing aluminium powder, vash oil and a few AlCl[3] in certain percentage and adding into bottom of fractionating tower containing coarse titanium tetrachloride. Heating the bottom of fractionating tower at a temperature of 139 DEG and regulating reflux ratio of the tower, this moment the aluminium powder and mineral oil deoxidizing the VOCl[3] into lower valency indissoluble precipitate VOCl[2] and being removed, and the TiCl[4] and some low boiling point chemical compounds volatilizing into a reflux unit, extracting cuts of 136-137 DEG boiling point, then condensing to get fine titanium tetrachloride. The vanadium-removed fine titanium tetrachloride contains vanadium content of V%<=0.0007%. The vanadium removing process and the fractionating process are all proceeded in the fractionating tower that saves device. The invention reduces a large amount of residue and sewage discharge, and consumes less materials relative to technics of using aluminium powder and mineral oil to remove vanadium alone, the invention provides high refining efficiency, simple operation and continuous, and has economic and environmental benefit of energy-saving and emission-reduction.

The invention relates to the technical field of preparation of nonferrous metal, in particular to a method for preparing titanium sponge through magnesium and chlorine recycling. The method comprises the following steps of: crushing natural rutile or titanium-rich slag, finely grinding to -0.25mm and chlorinating to obtain rough titanium tetrachloride; removing iron from the rough titanium tetrachloride by using a distillation tower with bottom temperature of between 140 DEG C and 145 DEG C and top temperature of 137 DEG C; removing silicon through a rectification tower with bottom temperature of 140 DEG C and top temperature of between 57 DEG C and 70 DEG C; removing vanadium by using copper wires to obtain a titanium tetrachloride product with purity of more than 99 percent; proportioning refined titanium tetrachloride and metal magnesium according to a mass ratio of magnesium to titanium as (1.3:1)-(1.8:1) and reacting at the temperature of between 700 DEG C and 1,000 DEG C to obtain mixture of the titanium sponge, the magnesium chloride and the silicon tetrachloride; and distilling the mixture of the titanium sponge, the magnesium chloride and the silicon tetrachloride for 30-35 hours under the conditions of temperature of between 880 DEG C and 1,000 DEG C and final vacuum degree of less than 0.1Pa to separate the titanium sponge and the magnesium chloride.

The invention relates to energy-saving manufacturing of purified hydrogenated titanium powders or alloying titanium hydride powders, by metallo-thermic reduction of titanium chlorides, including their hydrogenation, vacuum separation of titanium hydride sponge block from magnesium and magnesium chlorides, followed by crushing, grinding, and sintering of said block without need for hydrometallurgical treatment of the produced powders.

Methods disclosed contain embodiments of processes for manufacturing high-purity powders and their use in manufacturing near-net shape titanium and titanium-alloy articles by sintering titanium hydride and alloyed titanium hydride powders produced from combined hydrogen-magnesium reduction of titanium chlorides, halides and hydrides of other metals. Additional titanium hydride powder introduced with titanium tetrachloride beneficially affects the kinetics of magnesium-thermic reduction due to formation of the additionally-emitted atomic hydrogen, which helps to reduce presence of oxides and so cleans inter-particle interfaces of the product and enhances diffusion between all of components of the powder mixture.

The invention discloses a method for preparing a precious metal titanium dioxide core-shell structure. The method comprises the following steps: (1) preparing a precious metal nano particle colloidal solution; (2) adjusting the pH value of a titanium trichloride solution by adding alkaline matter; (3) adding the solution prepared in the step (1) to the solution obtained in the step (2) and reacting; (4) carrying out solid-liquid separation so as to obtain a nano material with the precious metal titanium dioxide core-shell structure. The preparation method disclosed by the invention is simple and feasible, and is good in repeatability, the prepared core-shell structure is good in monodispersity, and the thickness of a titanium dioxide shell layer can be controlled by adjusting the pH of the reaction system. Therefore, the core-shell structure can be applied to the field of hydrogen production of photocatalytic decomposition of water.

The invention provides a method and device for producing titanium by a fused salt electrolysis process, relating to a device adopting titanium tetrachloride as a raw material to directly produce high purity titanium by the fused salt electrolysis process. The method is characterized by adopting titanium tetrachloride as the raw material, introducing titanium tetrachloride into mixed fused salt of sodium chloride and potassium chloride, adopting magnesium as an anode and titanium as a cathode to electrolyze titanium tetrachloride to generate magnesium chloride and titanium, directly depositing the generated titanium on the titanium cathode and separating the generated titanium to obtain a titanium product. The method and device for producing titanium by a fused salt electrolysis process have the beneficial effects that the method and the device can be used for directly producing the high purity titanium from titanium tetrachloride without using titanium sponge as a raw material, can save the cost and can be used for producing titanium with higher purity; the produced high purity titanium is shaped like a cylinder or a square column; and a titanium ingot in the shape can be directly used as a raw material of an electron beam smelting furnace or a consumable electrode vacuum furnace in the next process, thus saving the processes of briquetting and welding and further saving the cost.

The invention relates to a method for preparing a titanium dioxide photocatalyst with a plant hierarchical structure in the technical field of photocatalysis. The method comprises the following steps: selecting a plant with a hierarchical structure as a template, and pre-treating the surface of the plant; preparing titanium tetrachloride solution or titanium alcoholic solution as a precursor solution; putting the treated plant into the prepared precursor solution to carry out ultrasonic treatment; and after the ultrasonic treatment is finished, taking out the plant, cleaning the plant by distilled water, drying the cleaned plant, and roasting the plant to remove the biological template to obtain a titanium dioxide material keeping the plant hierarchical structure. The titanium dioxide with the plant hierarchical structure prepared by the method has larger specific surface area and three-dimensional communicated pore canal structure, has higher photocatalysis property, and has wide application prospect on environmental governance such as organic pollutant degradation, and the like, self-cleaning, and the like.

The invention discloses a method for preparing vanadium oxide by using sodium salt roasting lixivium of titanium tetrachloride refined tailings. The method comprises the following steps: adding an aluminum remover and an adsorbent in heated sodium salt roasting lixivium of titanium tetrachloride refined tailings to remove impurities, and then filtering to obtain purified liquor; adding a soluble ammonium salt into the purified liquor and carrying out molybdenum precipitation, then, filtering to obtain ammonium metavanadate precipitates, washing, drying and roasting the ammonium metavanadate precipitates to obtain vanadium pentoxide. According to the method disclosed by the invention, sodium salt roasting lixivium of titanium tetrachloride refined tailings is directly adopted, molybdenum precipitation is directly carried out after further removing aluminum, and the purity of the prepared titanium tetrachloride is greater than 99.9wt%, the content of impurities such as silicon, chromium, iron, calcium and aluminum, is less than 0.005wt%, the yield of vanadium is over 90wt%, so that not only can a long-term pollution problem of waste slag on environment be solved, but also a vanadium resource is recycled and high-purity vanadium oxide is prepared, so that the method has very good social and economic benefits.

The invention relates to a catalyst for ternary polymerization of norbornene, maleic anhydride and vinyl acetate and a ternary polymerization method. The catalyst is characterized by being prepared by a method comprising the following steps: dissolving tri(cyclopentadienyl) neodymium, titanium tetrachloride and a ligand compound in a solvent in a dry single-opening glass bottle in an inert gas atmosphere, and sealing the opening of the bottle by using a latex tube, so as to obtain a titanium complex catalyst. Compared with the prior art, the invention provides a novel titanium complex catalyst and a ternary polymerization method using the same, the preparation method is simple, the titanium complex catalyst can generate catalytic activity in a nitrogen protection system at 40-90 DEG C to catalyze ternary polymerization of norbornene, maleic anhydride and vinyl acetate, and after being soaked in methanol, a polymerization product can be easily washed and separated; the catalyst has the characteristics of high yield, low reaction temperature, low price, availability, high catalytic efficiency and the like.

The invention relates to the manufacture of titanium hydride powder using continuous or semi-continuous process, and using titanium slag or synthetic rutile as raw materials, while hydrogen, titanium tetrachloride, titanium trichloride, titanium dichloride, and hydrogen chloride are participate as intermediate reaction products. The continuous comprises: (a) reduction of TiCl₄ to low titanium chlorides followed by cooling a mixture, (b) separating of residual TiCl₄ from solid low chlorides by heating the mixture in argon or vacuum up to 150° C. followed by removing the titanium tetrachloride from the mixture, (c) dissociation of TiCl₃ to TiCl₂ at 450° C. in vacuum followed by removal of gaseous titanium tetrachloride from the reaction zone, condensation to the liquid, and returning back into the reaction retort, (d) dissociation of TiCl₂ in vacuum at 750-850° C. to manufacture fine powder of metallic titanium and titanium tetrachloride, whereby hydrogen heated up to 1000° C. is used to accelerate this reaction, and (e) saturation of the fine titanium powder by hydrogen at 400-640° C. to manufacture final product of titanium hydride powder which is free of oxygen or nitrogen. The semi-continuous process includes the Kroll's process as the very first step.

The invention relates to a method for treating byproducts in chlorination-process technologies for titanium dioxide powder, and particularly discloses a method for comprehensively utilizing titanium chloride residues and filter liquid thereof in chlorination-process technologies for titanium dioxide powder. The method includes dissolving the titanium chloride residues in diluted hydrochloric acid to obtain acidic solution and neutralizing the acidic solution by the aid of sodium hydroxide solution; carrying out pH (potential of hydrogen) regulation, deionized water treatment and multi-step filter processes to obtain the filter liquid with sodium chloride which is a main component; feeding the obtained filter liquid to brine working procedures of chlorine-alkali systems and carrying out re-saturation treatment on the filter liquid to obtain raw materials for chlorine-alkali production. The method has the advantages that metal reducing agents do not need to be added into the acidic solution with the titanium chloride residues; steps for carrying out evaporative crystallization on the filter liquid can be omitted; the ultimately obtained filter liquid can be used as the production raw materials for chlorine-alkali technologies, and accordingly the chlorination-process technologies for the titanium dioxide powder can be organically combined with the chlorine-alkali production technologies.

The invention relates to a method for the extraction of scandium in titanium chloride smoke dusts and fused salt chloride residues by using a compound extraction agent, and belongs to the technical field of rare-earth metals. The weight percent of particular components of the compound extraction agent is that: 5%-35% of P350, 15%-45% of TBP, 5%-35% of secondary-octyl alcohol, and 5%-35% of kerosene oil. According to the invention, a high purity scandium oxide is obtained through twice leaching, extraction, nitric acid reverse extraction, oxalic acid sedimentation, and scorching. The extraction method adopts once direct water leaching, and twice hydrochloric acid leaching after roasting to improve the leaching rate; the leaching rate of scandium surpasses 96%, meanwhile the using of acid is reduced, the industrialized production is facilitated, and the total recovery of scandium is high and surpasses 85%.

The invention relates to a resource utilization method of titanium chloride slag and a device thereof and belongs to the chemical field of titanium dioxide. The method comprises the following steps: S1, carrying out alkaline leaching to form slag slurry; S2, carrying out solid-liquid separation on the slag slurry; S3, washing the separated solid in the step 2 again; S5, second settlement: adjusting the pH to 9-10 of the filtrate after solid-liquid separation in the step 2 with sodium carbonate and sodium hydroxide jointly, and carrying out settlement to remove heavy metal ions therein to formsecondary slag slurry; and S6, filtering the secondary slag slurry with a ceramic film, wherein solid-liquid separation is carried out on concentrated liquor and washing slag slurry through a plate-and-frame filter press or a centrifugal machine; and the clean liquor is deeply treated by a membrane separation technology to prepare salt dissolving light salt brine for a chlor-alkali process. The method converts environment-harmful titanium chloride slag into harmless building raw material and light salt brine for the chlor-alkali process, and turns wastes into wealth, so that the method has obvious economical and environmental benefits.

The cost-effective titanium powder is manufactured by (a) magnesium-thermic reduction of titanium chlorides characterized by the formation of a hollow block of the reaction mass having an open cavity in the center of the block, (b) thermal-vacuum separation of the hollow block from excessive Mg and MgCl2 at 850-950° C. and residual pressure of 10<-2>-10<-3 >mm Hg, (c) cooling of obtained titanium hollow block in a H2-contained atmosphere at an excessive hydrogen pressure, (d) crushing the hydrogenated titanium block, (e) grinding the crushed titanium pieces into the powder combined with a hydro-metallurgical treatment of obtained titanium powder in a diluted aqueous solution of at least one chloride selected from magnesium chloride, sodium chloride, potassium chloride, or titanium chloride, and (f) drying and, optionally dehydrating the titanium powder ground to a predetermined particle size. The formation of the hollow block of the reaction mass with the open cavity in the center of the block is carried out by accelerating the reaction mass on the inside surface of the reactor. The hydro-metallurgical treatment of titanium powder is carried out in the solutions having the total content of chlorides of 0.5-10 wt. %, at the powder-to-solution weight ratio from 1:1 to 1:4. The cooling of the titanium hollow block in the hydrogen-contained atmosphere is carried out to the temperature of 550-450° C. at the excessive hydrogen pressure of 0.2 bar or higher. The productivity of the innovative process is higher, the energy consumption is lessened more than double, the duration of the processing cycle is decreased by 3. The shorter time of high-temperature stages results in significant improvement of titanium powder quality because it prevents the oxidation and nitrogenation of the metal. The powder dispersion is increased caused by porous and poorly sintered structure of the reaction mass. Cooling the block in the presence of hydrogen also increases the powder quality and the yield of fine powder fractions during the hydro-metallurgical treatment.

The invention provides a method for preparing coarse titanium tetrachloride. The method uses natural leucoxene as a raw material and metallurgical coke as a reducing agent to obtain the coarse titanium tetrachloride through the addition of chlorine for boiling chloridization, the cooling of a cyclone exhaust fan, atomization, the filtration of a cloth envelop collector and the absorption of a packed absorption tower. The invention has the advantages of expanding the sources used for producing the coarse titanium tetrachloride by using the natural leucoxene as a raw material, and removing slag and collecting titanium tetrachloride in a mixed furnace gas discharged from the top of a chlorination furnace. In the prior art, furnace slag produced during the production of titanium tetrachloride by using high titanium slag as a raw material is discharged from the bottom of the furnace, and the operation environment is severe and requires a gas mask for operation.