14results about "Titanium tetrachloride" patented technology

The invention belongs to the field of separation, and particularly relates to a method for extracting and separating niobium and titanium from niobium concentrate. The method comprises the following steps: (1) crushing a niobium concentrate raw material, and then adding a carbonaceous reducing agent and a binder to prepare a spherical material; (2) heating the spherical material in an inert atmosphere for carbonization treatment to obtain pretreated powder; (3) heating and roasting the pretreated powder, and then continuously introducing chlorine until the reaction is finished; and (4) performing fractional condensation on a volatile gas-phase product in the roasting process to obtain NbCl5 and TiCl4, thereby completing the separation. The method is efficient in reaction, short in process, low in cost and free of secondary pollution, product purity exceeds 99%, traditional technical problems are solved, and industrialization is easy.

The invention provides a process for purifying and refining industrial grade titanium tetrachloride, which comprises the following steps of: removing main impurities such as silicon tetrachloride, vanadium oxychloride, aluminum chloride, ferric chloride and titanium oxychloride in a titanium tetrachloride crude product by adopting a rectification method and a chemical method, and condensing into a titanium tetrachloride liquid; carrying out degassing treatment on the titanium tetrachloride liquid; filtering the titanium tetrachloride liquid by using an ultrafiltration membrane; filtering the titanium tetrachloride liquid by using a nanofiltration membrane; and crystallizing the titanium tetrachloride liquid to obtain a finished product of which the purity reaches 99.99% and the total content of metal impurities is less than 5ppb. Main impurities in a titanium tetrachloride crude product are removed through a rectification method and a chemical method, then titanium tetrachloride liquid is filtered through an ultrafiltration membrane and a nanofiltration membrane, and metal impurities are efficiently removed through surface negative charges of the nanofiltration membrane, so that a titanium tetrachloride finished product with the purity reaching 99.99% and the total content of the metal impurities being smaller than 5 ppb is obtained. The process steps are simplified, and the titanium tetrachloride purification efficiency is improved.

A novel circulating fluidized bed chlorination furnace system is disclosed. The outlet of the petroleum coke feed tank is connected in parallel to the lower inlet of the chlorination furnace via a discharge pipe. The bottom of the chlorination furnace also has multiple chlorine inlets and slag discharge ports. The chlorine inlets are connected to chlorine pipes, and the slag discharge ports are connected to slag discharge pipes. The top of the chlorination furnace has an outlet, which is connected to the side inlet of a high-temperature cyclone separator via a feed pipe. The top of the high-temperature cyclone separator also has a liquid discharge port, which is connected to the top of a low-temperature cyclone separator via a liquid discharge pipe. The top of the low-temperature cyclone separator also has a liquid outlet. This invention features a compact structure, convenient installation, stable operation, and is safe and environmentally friendly. The entire reaction system is fluidized, preventing slag discharge pipe blockage. The combined use of the high-temperature and low-temperature cyclone separators ensures multiple cycles, repeated combustion, and reaction of the titanium tetrachloride mixture.

A device and method for efficient clean utilization of fluor carbon cerium ore double chlorination method, relate to the field of rare earth comprehensive utilization and recovery, the device is composed of a first continuous packing bed, pipeline device; second continuous packing bed; third continuous packing bed; first screw propelling type condenser; second screw propelling type condenser. Rare earth concentrate is chlorinated with aluminum chloride, carbon monoxide and chlorine gas generated in the first and second continuous packing beds in the third continuous packing bed. Chlorinated rare earth, aluminum fluoride and alkaline earth metal chlorides generated by chlorination reaction remain in the chlorination slag in solid form, and titanium tetrachloride, silicon tetrachloride and iron chloride leave the chlorination furnace in gaseous form. The gaseous chlorination products are condensed and recovered by the screw propelling type condenser. The solid phase products are separated by water immersion to obtain single rare earth chloride. The present application realizes the comprehensive utilization of rare earth elements and associated elements such as titanium, fluorine, silicon and iron in fluor carbon cerium ore, and no acid and alkali waste liquid and wastewater are generated in the reaction process, which has good environmental benefits.

The invention provides a method for blowing a micro-fine particle grade titanium-rich material in a fluidizing chlorination furnace, which comprises the following steps: step S1, drying and screening the micro-fine particle grade titanium-rich material to obtain titanium-rich material fine powder; s2, conveying the titanium-rich material fine powder to a chlorine pipeline of a boiling chlorination furnace; s3, the titanium-rich material fine powder is fully mixed with chlorine while being conveyed in a chlorine pipeline; and S4, a mixture of the titanium-rich material fine powder and chlorine is blown into a boiling chlorination furnace reaction zone. According to the method for blowing the micro-fine particle-grade titanium-rich material by the fluidizing chlorination furnace, the problem of resource waste caused by the fact that the micro-fine particle-grade titanium-rich material cannot be directly used for production of the fluidizing chlorination furnace is solved, efficient utilization of the micro-fine particle-grade titanium-rich material is realized through the blowing technology, the production cost is reduced, the energy consumption is reduced, and the yield and the quality of titanium tetrachloride are improved.

The invention discloses a method for pre-judging abnormal quality of a titanium tetrachloride distillation system, which comprises the following steps: arranging a trial observation hole on a reflux pipeline of the titanium tetrachloride distillation system, and pre-judging the quality of distillation reflux according to the change of the trial color on the basis that the initial color of the trial color is colorless and transparent. And the work of the distillation system is regulated and controlled according to different colors presented by the trial mirror. According to the method, the trial mirror observation hole is formed in the reflux pipeline of the titanium tetrachloride distillation system, and whether the quality of distillate reflux is abnormal or not is pre-judged according to the color presented by the trial mirror; according to the method, the distillation system does not need to be sampled and detected, and whether the reaction quality in the distillation system is controlled or not can be quickly and accurately judged only by observing the color of the distillate on line in real time through the trial mirror, so that the detection time can be effectively saved, enough regulation and control time can be provided for workers when the quality of the distillation system is abnormal, and the detection efficiency is improved. And unqualified distillates can be prevented from entering the distillation system in time.

The application provides a method for preparing titanium tetrachloride by using a fluidized bed, wherein the powder fluidization area and the cooling area are alternately arranged in the fluidized bed, the whole is in a rectangular structure, the powder material is added from one side of the fluidized bed, and is sequentially overflowed through several fluidization areas and cooling areas and then discharged from the outlet; the fluidization gas enters the fluidized bed through the distribution plate at the bottom of the fluidization area, and reacts with the added powder particles at a certain temperature to prepare titanium tetrachloride; and the cooling medium is sent from the bottom of the fluidized bed and discharged from the top outlet after heat exchange. The method uses the slag containing titanium carbide, titanium nitride or titanium carbonitride as the raw material, and reacts with chlorine gas, so that the reaction efficiency is high; the fluidized bed adopts the cross design of the fluidization area and the cooling area, so that the heat released by the chlorination reaction is discharged from the fluidized bed through the cooling medium in time, and the local heat release of the reaction is avoided, and the sintering of the material or even the dead furnace condition is avoided.

The invention relates to the technical field of titanium metallurgy, and discloses a method for preparing titanium tetrachloride from titanium-containing composite slag through low-temperature selective chlorination, which comprises the following steps: providing the titanium-containing composite slag which comprises a multiphase solid material of a TiCxOy phase and a melilite phase; the method comprises the following steps: putting titanium-containing composite slag into a reactor, and heating to 350-700 DEG C; introducing chlorine-containing gas into the reactor, and contacting the chlorine-containing gas with the titanium-containing composite slag to carry out selective chlorination reaction; and collecting and condensing gas generated in the reaction process to obtain a TiCl4 product, and discharging chlorination residues after the reaction. The method provided by the invention overcomes the dilemma in the traditional process, efficiently extracts titanium through a low-temperature selective chlorination technology, inhibits chlorination of impurities such as calcium and magnesium from the source, and realizes green production.

The invention discloses a method and a device for removing vanadium from crude titanium tetrachloride, and belongs to the technical field of impurity removal and refining of inorganic matters. The method comprises the following steps: (1) preheating crude titanium tetrachloride liquid, then introducing hydrogen into the crude titanium tetrachloride liquid, and irradiating the crude titanium tetrachloride liquid by adopting ultraviolet light with the wavelength not greater than 274 nm, so that the crude titanium tetrachloride reacts with the hydrogen; and (2) evaporating the reaction product to obtain refined titanium tetrachloride and vanadium-rich slag. According to the method, hydrogen is activated through ultraviolet light to generate H free radical ions, the problem that hydrogen cannot directly react with titanium tetrachloride and vanadium oxytrichloride is successfully solved, the efficient clean reducing agent hydrogen is used for removing vanadium from titanium tetrachloride, the safety and environmental friendliness of the vanadium removal process are effectively improved, the vanadium removal effect is improved, and the method is suitable for industrial production. The titanium tetrachloride with higher purity and the vanadium-rich slag with higher vanadium grade are obtained, an excellent foundation is laid for subsequent use of the titanium tetrachloride and the vanadium-rich slag, and a new thought is provided for vanadium removal of the titanium tetrachloride.

The invention relates to the technical field of titanium metallurgy, and discloses a method for directionally converting titanium-containing slag into TiCxOy-containing composite slag, which comprises the following steps: putting titanium-containing slag containing perovskite phase and a carbonaceous reducing agent into a reactor; heating the materials in the reactor to carry out carbon thermal reduction reaction; cO-containing gas generated in the reaction process is discharged, converted slag is obtained, and the slag is multiphase composite slag comprising the TiCxOy phase and the melilite phase. According to the method, phase transformation is accurately controlled, the obtained product is the composite slag containing TiCxOy and melilite, the composite slag can be directly used as a downstream chlorination raw material without complex crushing and magnetic separation iron removal procedures, the technological process is greatly shortened, and the equipment investment and operation cost are reduced.

The present application belongs to the field of mixed metallurgy, and discloses a method for removing organic impurities in refined titanium tetrachloride, comprising the following steps: opening a titanium tetrachloride valve, and introducing refined titanium tetrachloride after vanadium removal into a mixing tank; opening a reagent valve, and introducing a reagent into the mixing tank, wherein the reagent comprises at least one of the following: alkali metal chlorides and their hydrated chlorides, alkaline earth metal chlorides and their hydrated chlorides, aluminum trichloride and its hydrated chloride, and iron trichloride and its hydrated chloride; opening a stirrer in the mixing tank to stir, so that the reagent and the refined titanium tetrachloride are fully mixed and reacted; and introducing the reaction liquid into a distillation device, and obtaining refined titanium tetrachloride with an organic impurity content of <0.0001% through distillation. The method of the present application has a high removal rate of organic impurities in refined titanium tetrachloride, reaching 99.99%, and the process of the present application is simple, the equipment investment is small, and the energy consumption is low.

The application is suitable for the technical field of titanium chloride white, and provides a device and method for reducing slurry solid content of a low-temperature chlorination leaching system; the device comprises a chlorination furnace, a low-temperature chlorination leaching tower, a spraying part arranged at a flue gas outlet of the chlorination furnace, a spraying groove for collecting spraying water discharged from the low-temperature chlorination leaching tower, and an organic reagent injection device arranged in the low-temperature chlorination leaching tower; the spraying groove provides spraying water for a heat exchanger through a conveying pump; an output end of the heat exchanger is communicated with an input end of the spraying part through a first conveying pipeline; a solid-liquid separator is further arranged between the heat exchanger and the conveying pump, the solid-liquid separator is used for solid-liquid separation of the spraying water input by the conveying pump, and provides supernatant after solid-liquid separation for the heat exchanger; and the device further comprises a refining system, and a concentrated phase output end of the solid-liquid separator is connected in a slurry evaporation furnace of the refining system.

The invention relates to the technical field of titanium dioxide production, in particular to a preparation method and a surface treatment method of titanium dioxide for polycarbonate. The preparation method comprises the following steps: mixing and grinding natural rutile ore and petroleum coke, boiling and chloridizing, rectifying and purifying, and carrying out gas-phase oxidation to obtain a high-purity rutile type titanium dioxide matrix; and carrying out inorganic coating of silicon first and aluminum second, synthesis of a multifunctional organic coating agent, and organic grafting on the surface of the high-purity rutile type titanium dioxide matrix. Inorganic coating forms a compact protective layer, an organic coating agent integrates ultraviolet absorption, interfacial compatibility and covalent grafting functions, and a dual light stabilization mechanism of passive isolation and active absorption is constructed. According to the method, the dispersity and interface bonding force of titanium dioxide in polycarbonate are remarkably improved, the mechanical property and long-term weather resistance of the composite material are improved, and the method is suitable for the field of high-end engineering plastic products such as electronic appliances and automobile parts.

The invention belongs to the field of resource utilization of metallurgical solid waste, and discloses a comprehensive utilization method of titanium-containing blast furnace slag, which comprises the following steps: uniformly mixing titanium-containing blast furnace slag, a carbonaceous reducing agent, a composite phase inversion agent and water according to a mass ratio of 100: (25-35): (40-50): (20-25), granulating, and drying to obtain pellets; wherein the composite phase inversion agent is composed of NaCl and CaCl2 according to the mass ratio of (4-8): 4; under the protective atmosphere, the pellets are subjected to microwave heating to 800-1000 DEG C, and after heat preservation is conducted for 1.5-2.5 h, mixed gas and chlorinated tailings are obtained; the mixed gas is subjected to first-stage condensation separation, second-stage condensation separation and third-stage condensation separation in sequence, and a SiCl4 product, a TiCl4 product and an iron-aluminum salt product containing FeCl3 and / or AlCl3 are obtained in sequence; wherein the condensation temperature of the first-stage condensation separation is 136-140 DEG C, the condensation temperature of the second-stage condensation separation is 102-105 DEG C, and the condensation temperature of the third-stage condensation separation is 12-15 DEG C. According to the method, energy consumption is reduced, the titanium recovery rate is high, and recovery of valuable elements such as silicon and titanium is achieved.