43results about "Zirconium halides" patented technology

The present application provides a molten salt extraction and distillation separation device for zirconium and hafnium tetrachloride, comprising a distillation tower, a reboiler, a reflux tank, a circulation tank, a sublimator, a gas preheater, and a condenser. During installation, the various components are connected in sequence to obtain a complete molten salt extraction and distillation separation device for zirconium and hafnium tetrachloride. The device has a simple structure, is easy to operate, and is convenient to connect, and is suitable for the molten salt extraction and distillation separation of zirconium and hafnium tetrachloride.

The invention relates to the technical field of mineral processing, and discloses a method for separating zirconium and hafnium in zirconite, which comprises the following steps: pretreating raw materials, crushing the zirconite raw materials into particles with the particle size of 0.5-5mm through a jaw crusher, obtaining particles with uniform particle size through vibrating screening equipment, and then separating zirconium and hafnium in the zirconite by adopting a mineral separation and purification technology combining gravity separation, magnetic separation and electric separation to obtain zirconium and hafnium in the zirconite. Gangue and iron-titanium impurities are removed according to density, magnetism and electrical property differences; and chlorination reaction: mixing the pretreated zirconite and carbon according to the mass ratio of 1: 0.8, putting the mixture into a high-temperature chlorination furnace, carrying out chlorination for 4 hours at the temperature of 850-1100 DEG C to generate (Zr, Hf) Cl4 mixed gas, and collecting and purifying the gas through a condensation and washing device to ensure the purity of the zirconium-hafnium chloride in the gas. The method for separating the zirconium and the hafnium in the zirconite aims at solving the problems of low separation efficiency, high cost and serious environmental pollution generally existing in a traditional zirconium and hafnium separation method.

A compound containing lithium, a tetravalent metal element M, chlorine and a dopant element X and having a reflection peak in each of 2θ angle ranges of 15° to 17°, 31° to 32.5°, 41° to 42.5°, 48.5° to 50° and 53° to 55° in an X-ray diffraction chart measured using a CuKα ray at 25° C., in which a half width of a reflection peak having a largest peak height in the 15° to 17° range is 0.35° to 3.00°.

A positive electrode material 1000 in one embodiment of the present disclosure comprises a positive electrode active material 110, a coating layer 111 that includes a first solid electrolyte and covers at least part of the surface of the positive electrode active material 110, and a second solid electrolyte 100. The first solid electrolyte contains Li, M1, and F. M1 is at least one selected from the group consisting of Ti, Al, and Zr. The second solid electrolyte 100 contains Li, M2, O, and X. M2 is at least one selected from the group consisting of Ta and Nb. X is at least one selected from the group consisting of F, Cl, Br, and I.

The application relates to a modified lithium-rich manganese-based material, a preparation method thereof, a positive plate and a battery. The modified lithium-rich manganese-based material comprises a double-alkali-metal manganese-rich matrix, and the expression of the double-alkali-metal manganese-rich matrix is as follows: Li 1+x Na z Mn a Co b Ni c M 1‑a‑b‑c O 2+x+z‑y D y ; wherein, 0

Provided herein are methods and systems for extracting zirconium and / or other impurities from a strontium-containing mixture. A method for removing zirconium from a mixture including zirconium and strontium can include converting at least a portion of a Zr-containing precursor to ZrF4 in the mixture, converting at least a portion of a Sr-containing precursor to SrF2 in the mixture, solubilizing at least a portion of the ZrF4 and / or the SrF2 in a solvent to create a solution, and / or separating at least a portion of the solubilized ZrF4 and / or at least a portion of the solubilized SrF2 from the mixture.

The present invention discloses a production process of zirconium oxychloride and zirconium oxychloride. The process comprises the following steps: 1) Using zirconium tetrachloride as a raw material, preparing a first zirconium oxychloride solution; 2) Using high-purity zirconium oxychloride as a raw material, preparing a second zirconium oxychloride solution; 3) Simultaneously starting natural cooling for the first zirconium oxychloride solution and the second zirconium oxychloride solution. After the second zirconium oxychloride solution starts to crystallize, adding a preset mass of the second zirconium oxychloride solution to the first zirconium oxychloride solution to obtain a mixed solution; 4) Naturally cooling the mixed solution, and after crystallization, obtaining zirconium oxychloride crystals. The process of the present invention starts from a zirconium oxychloride solution, controls the crystallization process, reduces the impurity content in zirconium oxychloride, and improves the quality of zirconium oxychloride. The zirconium oxychloride of the present invention controls the crystallization process during crystallization, obtains crystals with higher purity, reduces the number of crystallization times, thereby achieving the improvement of the quality of zirconium oxychloride products and indirectly reducing the production cost of enterprises.

This invention discloses a process for preparing chlorides by reducing chlorination with rare metal oxides, comprising the following steps: S1, in an inert atmosphere, a mixture containing rare metal oxide powder, a reducing agent, and a chloride salt is subjected to a reduction reaction at a predetermined temperature 1; S2, the temperature is lowered to a predetermined temperature 2, oxygen is introduced, and the concentration of oxygen in the mixed gas is adjusted to carry out a chlorination reaction, and the chlorinated product is condensed and collected. This invention eliminates the need for gaseous chlorinating agents such as chlorine or hydrogen chloride, avoiding the leakage risks of liquid chlorine and compressed hydrogen chloride during storage and transportation; the raw materials can be directly rare metal oxides, with a wide range of sources, good process adaptability, and significantly reduced production costs.

Provided is a solid electrolyte (11) which has a compound that contains lithium, a halogen, and one or more elements that are selected from the group consisting of Zr, Al, Y, Zn, In, Ta, Nb, Hf, La, Ce, Ba, Sr, Ca, Mg, and Ga. The fluorine concentration in a surface region (11B) is higher than that in a central region (11A), and the thickness of the surface region (11B) is 1 nm to 1,000 nm.

Provided herein are methods and systems for extracting zirconium and / or other impurities from a strontium-containing mixture. A method for removing zirconium from a mixture including zirconium and strontium can include converting at least a portion of a Zr-containing precursor to Zrp4 in the mixture, converting at least a portion of a Sr-containing precursor to Srp2 in the mixture, solubilizing at least a portion of the Zrp4 and / or the Srp2 in a solvent to create a solution, and / or separating at least a portion of the solubilized Zrp4 and / or at least a portion of the solubilized Srp2 from the mixture.

The surface-treated inorganic fluoride particles are characterized by being inorganic fluoride particles the surface of which is coated by an organic compound. The surface-treated inorganic fluoride particles of the present invention can be suitably used for various high-frequency devices and the like.

The surface-treated inorganic fluoride particles are characterized by being inorganic fluoride particles the surface of which is coated by an organic compound. The surface-treated inorganic fluoride particles of the present invention can be suitably used for various high-frequency devices and the like.

The utility model discloses a device for purifying crude zirconium tetrachloride, which comprises a tank body, the top of the tank body is fixedly connected with a tank cover through a bolt, the top of the tank cover is communicated with a zirconium tetrachloride exhaust pipeline, the lower part of one side of the tank body is communicated with an argon pipeline, and one side, far away from the argon pipeline, of the tank body is communicated with a hydrogen pipeline. The utility model relates to the technical field of zirconium tetrachloride purification, in particular to a device for purifying crude zirconium tetrachloride, which can be used for treating waste gas generated during purification through the matching of a tank body, a tank cover and a treatment device, and can be used for carrying out auxiliary heating and heat preservation on the tank body by utilizing waste heat of the waste gas because the temperature of the waste gas is higher when the waste gas is exhausted. The heat in the tank body is prevented from being directly and rapidly dissipated through the tank body, so that the energy-saving performance is improved, and external treatment equipment is not needed for waste gas treatment, so that the input of the equipment can be reduced, and the investment of economic cost is reduced.

Disclosed herein is the compound (NaxLi3−x)(3−y) / 3Y1−yZryCl6, where x is greater than 0 and less than 3 and where y is greater than 0 and less than 1. Where x = 1 and y = 0.75, the compound is Na0.75Li1.5Y0.25Zr0.75Cl6. The compound is usable as an effective solid electrolyte for a solid-state battery. The solid electrolyte can utilize lithium ions and / or sodium ions as charge carriers.

The present invention describes a solid-state material having ionic conductivity for lithium ions, a composite comprising said solid-state material and a positive electrode active material, a method for preparing said solid-state material, the use of said solid-state material as a solid electrolyte in an electrochemical cell, a solid structure selected from the group consisting of a positive electrode (cathode), a negative electrode (anode) and a separator of an electrochemical cell comprising said solid-state material, and an electrochemical cell comprising such a solid-state structure.

The invention discloses a preparation method of high-purity zirconium fluoride, which comprises the following steps: step S1, dissolving: dissolving a zirconium-containing substance with hydrofluoric acid according to a solid-to-liquid ratio of 1: 4 to 1: 10, after the zirconium-containing substance is dissolved, adding pure water to obtain a zirconium-containing solution, and forming a zirconium fluoride solution when the mass content of zirconium fluoride in the zirconium-containing solution is greater than 100g / L; s2, impurity removal: introducing the zirconium-containing solution into a resin tower, and carrying out ion exchange adsorption; s3, concentration: performing electrodialysis concentration on the purified zirconium-containing solution through an electrodialyzer; step S4, freeze drying: carrying out primary drying on the concentrated zirconium-containing solution through freeze drying; and S5, high-temperature drying: performing high-temperature drying on the freeze-dried materials, and performing crushing and granulation. The preparation method of the high-purity zirconium fluoride is good in purification effect.

The invention relates to the technical field of zirconium and hafnium separation, in particular to a method for separating zirconium tetrachloride and hafnium tetrachloride. The method for separating zirconium tetrachloride and hafnium tetrachloride comprises the following steps: (a) carrying out first heating treatment on a mixed system containing crude zirconium tetrachloride salt and alkali metal chlorate to obtain a first mixed system; (b) introducing crude zirconium tetrachloride gas into the first mixed system to carry out gas-liquid mass transfer exchange; zirconium tetrachloride gas generated in the gas-liquid mass transfer exchange process is collected; (c) carrying out second heating treatment on the reaction system after the gas-liquid mass transfer exchange is finished; and (d) carrying out third heating treatment on the reaction system subjected to the second heating treatment, and collecting hafnium tetrachloride gas generated in the third heating treatment process. The method for separating zirconium tetrachloride and hafnium tetrachloride is short in separation process, high in separation efficiency, high in product purity, high in operability, low in cost and capable of achieving continuous and large-scale production.

Processes for the synthesis of [89Zr]ZrCl4 from [89Zr][Zr(oxalate)4]4- salt are provided. The [89Zr]ZrCl4 can be reacted with biomarker targeting agents to produce 89Zr labelled radiopharmaceuticals. The 89Zr labelled radiopharmaceuticals find use in, for example, non-invasive molecular imaging.

This invention relates to the field of non-ferrous metal metallurgy, and particularly to a zirconium tetrachloride purification system and method. The zirconium tetrachloride purification system includes a purification furnace; a vacuum collection tank connected to the furnace via a first pipeline, on which an exhaust valve is installed, and a discharge port at the bottom of the vacuum collection tank; a circulating cooling water system connected to the vacuum collection tank; a filter connected to the vacuum collection tank via a second pipeline, on which a first pneumatic valve is installed; a tail gas spray tower connected to the filter via a third pipeline; and a control system electrically connected to the exhaust valve and the first pneumatic valve. This zirconium tetrachloride purification system and method solves the problems of low control accuracy and inherent dangers in existing zirconium tetrachloride purification methods.

[ 89 Zr][Zr(oxalate)4] 4- From salt 89 A method for synthesizing ZrCl4 is provided. 89 Zr]ZrCl4 is reacted with a biomarker targeting agent, 89 Zr-labeled radiopharmaceuticals can be produced. 89 Zr-labeled radiopharmaceuticals are used, for example, in non-invasive molecular imaging.

The invention relates to the technical field of sodium ion batteries, in particular to a positive electrode material and a preparation method thereof, a positive plate, a sodium ion battery and electric equipment. The structural formula of the positive electrode material is Na < x > MO < 2-y > A-z < F >, naxMO2 is a layered oxide matrix material, and M is a transition metal element; a is a metal coating element, the positive electrode material contains an oxide corresponding to the element A, the oxide corresponding to the element A is located on the surface and inside the layered oxide matrix material, A comprises at least one of Al, Zr, Mg and W, and y is the ratio of the molar weight of the element A to the molar weight of the layered oxide matrix material; the positive electrode material contains metal fluoride, the metal fluoride is located on the surface of the layered oxide matrix material, and z is the ratio of the molar weight of the F element to the molar weight of the layered oxide matrix material. According to the invention, the dissolution phenomenon of transition metal elements in the material circulation process can be effectively improved, so that the circulation capacity retention rate is increased.

The invention discloses a multi-anion doped chlorine-based solid electrolyte as well as a preparation method and application thereof. The chemical formula of the polyanion doped chlorine-based solid electrolyte is ZrCl4.xLi3PO4.yLinA.zLiA '(0.2 < = x < = 0.7, 0.05 < = y < = 0.6, 0 < = z < = 1; linA is Li2S and / or Li3N, and LiA'is one or more of LiF, LiCl, LiBr and LiI). By introducing various anions, the multi-anion doped chloride solid electrolyte with high ionic conductivity is prepared. By adjusting the variety and proportion of anions, the electrochemical stability window of the chloride solid electrolyte can be broadened, and the chloride solid electrolyte can stably operate at the high voltage of 4.5 V when matched with a high-voltage positive electrode. In addition, the all-solid-state battery using the polyanion doped chloride solid electrolyte has excellent fast charging performance and cycling stability.

The application belongs to the technical field of sponge zirconium production and relates to a method for preparing and producing refined zirconium tetrachloride, which comprises the following steps: S1, boiling chlorination, a carbon powder filtering settler is connected to the gas outlet of a chlorination furnace, the gas outlet of the carbon powder filtering settler is connected to a hydrogen charging iron remover, the cavity temperature in the carbon powder filtering settler and the hydrogen charging iron remover is respectively controlled to be 400±10 DEG C, and hydrogen is introduced into the hydrogen charging iron remover; S2, condensation, the gas outlet of the hydrogen charging iron remover is sequentially connected with a first-stage condenser, a second-stage condenser and a third-stage condenser, the cavity temperature in the first-stage condenser is controlled to be 280±10 DEG C, the cavity temperature in the second-stage condenser is controlled to be 240±10 DEG C, the cavity temperature in the third-stage condenser is controlled to be 220±10 DEG C, and the condensed materials at the outlets of the condensers are all refined zirconium tetrachloride. The method can completely cancel the purification process of the traditional refined zirconium tetrachloride preparation process, and greatly saves energy, manpower and other costs.

The application provides a molten salt extraction rectification separation method of zirconium hafnium tetrachloride, and is particularly suitable for a molten salt extraction rectification separation device. In the molten salt extraction rectification separation, main components such as a rectification tower, a sublimer, a reflux tank, a condenser, a reboiler and a circulating tank are connected first, then zirconium hafnium chloride raw materials to be separated and chloride salt for rectification are filled, and finally the device is started to realize the separation of zirconium hafnium chloride under rectification conditions. The separation device and method have good usability and process adaptability, and the prepared zirconium tetrachloride and hafnium tetrachloride meet the use requirements in the fields of atomic energy, aerospace, high-power laser and integrated circuit, and provide reference and guidance for the research and development and application of the molten salt rectification separation technology and equipment of zirconium hafnium tetrachloride.

The utility model discloses a zirconium tetrachloride purification furnace cooler, which relates to the technical field of zirconium tetrachloride production, and comprises a sorting assembly, the sorting assembly comprises a hanging barrel, a condenser, an auxiliary heating pipe, a gas collecting chamber, an exhaust valve and a cooling pipeline, the condenser is sleeved outside the hanging barrel, the auxiliary heating pipe is inserted in the middle of the hanging barrel, and the air collecting chamber is sleeved outside the auxiliary heating pipe. The two sides of the hanging barrel are communicated with air collecting chambers, exhaust valves are arranged at the top ends of the air collecting chambers, cooling pipelines are communicated between the adjacent exhaust valves, and pipelines used for introducing air and cooling water for cooling are laid on the inner side of the condenser. The zirconium tetrachloride purification furnace cooler provided by the utility model has the characteristics that low-boiling-point impurities such as silicon tetrachloride, titanium tetrachloride and aluminum trichloride are enriched in the gas collection chamber and are intensively and automatically discharged, so that the loss amount of zirconium tetrachloride during exhaust is reduced, the impurity removal effect and the purity of refined zirconium tetrachloride are improved, the recovery rate of zirconium is improved, and the production cost is reduced. The working time consumption is short; the production efficiency is higher.

The invention discloses a solid electrolyte material as well as a preparation method and application thereof, and relates to the technical field of batteries. The chemical formula of the solid electrolyte material is Na < x > (OCN) < x > (ZrCl4) < y > and / or Na < x > (SCN) < x > (ZrCl4) < y >, x is larger than or equal to 1.5 and smaller than or equal to 2.5, and y is equal to 1. The invention also discloses a preparation method of the solid electrolyte material, which comprises the following steps: uniformly mixing sodium salt and zirconium chloride, and then carrying out sintering reaction in an inert atmosphere to obtain the solid electrolyte material. The solid electrolyte material has the advantages of excellent ionic conductivity, stable electrochemical performance and the like, and can be applied to the field of solid sodium-ion batteries.

The application discloses a preparation method of rare metal chloride, which comprises the following steps: in an inert atmosphere, a mixture containing rare metal powder, a chlorine salt and an auxiliary material is heated to a predetermined temperature, oxygen is introduced, the concentration of oxygen in the mixed gas is adjusted, a chlorination reaction is carried out, and a chlorination product is condensed and collected to obtain the rare metal chloride. The application avoids the safety production risk caused by the use of chlorine or hydrogen chloride in the traditional production, and the production process avoids the leakage risk of liquid chlorine and compressed hydrogen chloride in the storage and transportation process. Since the reaction process is a double decomposition reaction, the reaction rate is controllable, the reaction does not have obvious heat release, and is safe and reliable. The chlorine content in the production tail gas is extremely low, and the environmental pollution problem caused by a large amount of chlorine-containing tail gas in the traditional chlorination process is avoided.

A compound containing lithium, a tetravalent metal element M, chlorine and a dopant element X and having a reflection peak in each of 2θ angle ranges of 15° to 17°, 31° to 32.5°, 41° to 42.5°, 48.5° to 50° and 53° to 55° in an X-ray diffraction chart measured using a CuKa ray at 25°C, in which a half width of a reflection peak having a largest peak height in the 15° to 17° range is 0.35° to 3.00°.

The invention provides a zirconium-hafnium molten salt rectification separation system. The system comprises a rectification unit and a steam stripping unit, the rectification unit comprises a rectification tower, a reboiler and a reflux tank; the steam stripping unit comprises a steam stripping column, a fused salt extrusion tank and a gas preheater; the reboiler is respectively connected with the rectifying tower and the steam stripping column; the steam stripping column is respectively connected with the fused salt extrusion tank and the gas preheater; the reflux tank is respectively connected with the rectifying tower and the fused salt extrusion tank; the fused salt extrusion tank is also connected with a gas preheater; after the fused salt enriched by zirconium tetrachloride in the reboiler is subjected to steam stripping treatment by a steam stripping column, zirconium tetrachloride enters a steam stripping medium to be separated from the fused salt; the fused salt subjected to steam stripping further enters a rectifying tower to participate in a rectifying reaction, so that heat transfer and mass transfer balance in the rectifying tower is prevented from being damaged due to relatively high zirconium and hafnium chloride content in the fused salt; according to the method, the gas-liquid contact area is increased in a manner of separating zirconium tetrachloride by virtue of sieve plate bubbling and steam stripping, and the mass transfer rate of zirconium tetrachloride from a liquid phase to a gas phase can be remarkably improved at a relatively low temperature, so that the separation efficiency is improved.

The invention relates to the technical field of high-purity preparation of key metals, and discloses a method for purifying crude zirconium, which comprises the following steps: S1, heating crude zirconium, flux metal and fused salt to melt for reaction to obtain zirconium alloy with low hafnium content; and S2, the low-hafnium-content zirconium alloy obtained in the step S1 reacts with chlorine, and a zirconium product is obtained. The method does not need multiple times of high-temperature fractionation or multi-stage extraction treatment, realizes preparation of the high-purity zirconium product in a short process, and has the advantages of high zirconium recovery rate, simplicity in operation and the like.