260 results about "Impurity ions" patented technology

The invention relates to a super junction power device and a preparation method thereof. The preparation method comprises the following steps: providing a silicon carbide substrate; a silicon carbide epitaxial layer is formed on the top surface of the silicon carbide substrate, the silicon carbide epitaxial layer has first type impurity ions, a plurality of doped columns are formed in the silicon carbide epitaxial layer, the doped columns have second type impurity ions, and the doped columns are formed through an etching process and an epitaxial process or through a multi-step epitaxial process and a multi-step ion implantation process; forming a body region in the surface, far away from the silicon carbide substrate, of the silicon carbide epitaxial layer, wherein the body region has second type impurity ions; forming a source region between the doped columns, wherein the source region is provided with a first type of foreign ions; forming a first groove penetrating through the source region and the body region between the adjacent doped columns, and forming a second groove penetrating through the body region above the doped columns; forming a gate structure in the first groove; and forming a source trench structure in the second trench. The on resistance of the super junction power device is reduced, and the voltage withstanding characteristic of the super junction power device is improved.

The invention relates to a resin life prediction method and device, a storage medium and electronic equipment, and relates to the field of nuclear technology, and the method comprises the steps: firstly obtaining the exchange capability data of resin in a purification system and the purification flow of the purification system; measuring the inlet conductivity of the coolant flowing into the resin on line by using a first conductivity measuring instrument, wherein the first conductivity measuring instrument is arranged at the inlet of the coolant flowing into the resin; measuring the outlet conductivity of the coolant outflow resin on line by using a second conductivity measuring instrument, wherein the second conductivity measuring instrument is arranged at the outlet of the coolant outflow resin column; based on the inlet conductivity and the outlet conductivity, the equivalent concentration of impurity ions in the coolant is determined; and finally, predicting the service life of the resin according to the equivalent concentration of the impurity ions, the exchange capacity data of the resin and the purification flow of the purification system. Through the scheme disclosed by the invention, online prediction of the service life of the resin can be realized, and the time hysteresis of prediction of the service life of the resin is effectively reduced.

The invention provides spherical cobaltosic oxide as well as a preparation method and application thereof, the preparation method comprises the following steps: (1) injecting a cobalt salt-containing solution and a carbonate solution into a base solution in a parallel flow manner for a coprecipitation reaction to obtain a mixed-phase precursor; and (2) calcining the mixed phase precursor to obtain the spherical cobaltosic oxide, wherein the solute of the base solution in the step (1) is alkali metal hydroxide. According to the method disclosed by the invention, the precursor of the hydroxyl cobalt oxide and cobalt carbonate mixed phase can be prepared without separating kettles, the content of foreign ions in the precursor is low, and small-particle and high-purity cobaltosic oxide can be prepared by directly sintering.

Generation of impurity ions is prevented or reduced in a carbon ion generating device in which a laser-driven ion acceleration system is employed. A carbon ion generating device generates a carbonized region by irradiating a film made of an organic compound with a first laser beam, and generates carbon ions by irradiating at least a part of the carbonized region with a second laser beam.

The invention is suitable for the application field of electrolyte acidity determination, and provides a method for determining the acidity of an all-vanadium electrolyte based on a complexing mass difference method, and the method comprises the following steps: taking the all-vanadium electrolyte, and diluting the all-vanadium electrolyte into a pretreated all-vanadium electrolyte with the concentration of 0.05-0.1 mol / L; adding 1.5-2mL of a complexing masking reagent with the molar concentration of 1.5-2mol / L, weighing, and recording as M1; stirring and titrating, weighing and recording as M2; a quantitative determination method of mass difference is used for calculation, and the formula is {(M2-M1)-0.05} / A * C. In conclusion, a mass difference quantitative determination method is adopted, the vanadium complexing masking reagent is added, the adding amount and the pH value of the vanadium complexing masking reagent are controlled, a stable complex is formed through the complexing masking reagent, vanadium ions and impurity ions, the oxidation-reduction reaction and the precipitation reaction of the complex and sodium hydroxide are inhibited, and the accuracy of the acidity value of the all-vanadium electrolyte is improved.

The invention discloses a method for preparing a vanadium electrolyte by extracting a sodium salt roasting vanadium extraction leaching solution, and belongs to the technical field of vanadium electrolytes. In order to improve the impurity separation depth and the product purity of the vanadium electrolyte, the invention provides a method for preparing the vanadium electrolyte by extracting a sodium salt roasting vanadium extraction leaching solution, which comprises the following steps: removing silicon from the leaching solution, selectively reducing and acidifying, extracting anions, washing, reducing and reversely extracting, degassing and deoiling, and electrolyzing to obtain the 3.5-valent vanadium electrolyte. According to the method, the sodium-modified vanadium-containing leaching solution is used as a raw material, anions in the solution are completely converted into cations in a mode of combining pretreatment deep silicon removal with selective reduction acidification, vanadium is in an anion form, all impurity ions in the solution are efficiently separated through anion extraction-reduction reverse extraction, and the purity of the vanadium-containing leaching solution is improved. The prepared vanadium electrolyte product is extremely low in impurity ion content, the vanadium yield is remarkably improved, and the preparation cost of the high-purity vanadium electrolyte is greatly reduced.

The invention discloses a method for measuring the content of ferric ions in an iron-chromium flow battery electrolyte, which comprises the following steps: before the content of the ferric ions is measured, pretreating the electrolyte to be measured to remove the influence of Cr ions and other impurity ions in the electrolyte on an experimental result, and then titrating with a sodium thiosulfate standard solution; the method has the advantages that the method is suitable for directly measuring the content of the ferric ions under the coexistence condition of a large amount of ferrous ions, the problems that in the prior art, when a large amount of ferrous ions and a trace amount of ferric ions coexist, the error is large, and the accuracy is low are solved, and a technical guarantee is provided for capacity recovery and efficiency improvement of the electrolyte of the flow battery.

The invention discloses a wafer cutting protection liquid composition, and belongs to the field of wet electronic chemicals. The composition comprises the following components in percentage by mass: 0.1-5% of a wetting agent, 0.1-2% of a penetrating agent, 0.1-2% of a dispersing agent, 0.1-2% of a pH regulator, 0.1-2% of a nonionic Gemini surfactant and the balance of water, wherein the sum of the mass percentages is 100%. The nonionic Gemini surfactant used in the invention has excellent wettability and permeability, can effectively reduce surface tension at low concentration, does not introduce foreign ions, is easy to rinse, has no residue, and can improve the cleaning ability to particles. The composition prepared from the cutting fluid has good cooling and lubricating effects, has no obvious foam, does not corrode metal to damage an electrode, can protect a wafer from being damaged during cutting, prevents fragments and pollution, is low in irritation and environment-friendly, and meets the environment-friendly requirement.

The invention relates to the technical field of water electrolysis hydrogen production system monitoring, and discloses an electrolytic bath impurity ion monitoring method which comprises the following steps: constructing a digital twin model of an electrolytic bath; acquiring operation parameters of the water electrolysis hydrogen production system and real-time concentration distribution data of various impurity ions, and synchronizing the operation parameters and the real-time concentration distribution data to the digital twinborn model; based on the real-time concentration distribution data, predicting concentration distribution of various impurity ions at the next moment by using a multi-physics field coupling model; and judging whether the concentration of each impurity ion exceeds a set threshold value or not, if so, determining an early warning level through an ion type and early warning level mapping table according to the type of the impurity ion exceeding the threshold value, and performing early warning. According to the invention, through the digital twinning and multi-physical field coupling model, real-time monitoring and prediction of foreign ions in the electrolytic cell are realized, so that the safety and efficiency of the water electrolysis hydrogen production system are improved.

This application discloses a dynamic water device and its control method for simulating the high temperature and high pressure of a nuclear power plant, including a water storage tank, an aeration assembly, a circulation pump, a first branch, a second branch, and an ion control assembly. The water storage tank is used to hold experimental water; the aeration assembly is used to supply gas to the water storage tank; the circulation pump is used to output the aqueous solution from the water storage tank to the first and second branches to form a water circulation; both the first and second branches are equipped with ion control assemblies, which are used to control the concentration of various ions in the aqueous solution to more closely resemble the conditions of the aqueous solution during actual operation. This application uses the first branch to heat and pressurize the aqueous solution to simulate a real high temperature and high pressure environment, and uses the second branch to detect dissolved oxygen, pH, and conductivity of the aqueous solution; both the first and second branches are equipped with ion control assemblies, which can absorb various impurity ions in the aqueous solution and retain and release OH-. ‑ By regulating OH ‑ The concentration is used to adjust the pH of the aqueous solution.

This invention discloses a method for preparing high rare-earth-doped low-loss boron-containing glass optical fibers. The steps are as follows: weigh glass raw materials containing rare-earth oxides and boron oxide, mix them uniformly, and place them in a high-temperature furnace. First, heat the mixture under a high-purity nitrogen atmosphere, then switch to a high-purity oxygen atmosphere or a high-purity air atmosphere for continued heating. The resulting glass melt is cooled and annealed to obtain a large glass block. The glass is then processed into a preform and placed in an optical fiber drawing furnace for fiber drawing under a high-purity oxygen atmosphere, thus achieving the preparation of high rare-earth-doped low-loss glass optical fibers. This invention eliminates the additional glass matrix absorption in the near-infrared region caused by boron in boron-containing glass optical fibers and also transforms the transition metal impurity ions from a low valence state with broad absorption in the near-infrared region to a high valence state with narrow low absorption in the near-infrared region. Both of these aspects significantly reduce the matrix absorption of boron-containing glass optical fibers, providing possibilities for the application of high rare-earth-doped low-loss glass optical fibers.

The invention belongs to the field of fine chemicals and glass storage, and particularly relates to composite acid, a preparation method and a method for cleaning glass rainbow spots through the composite acid. The preparation method comprises the following steps: sequentially adding 3-5% of acetic acid, 0.1-0.2% of fatty alcohol-polyoxyethylene ether, 0.3-0.5% of disodium ethylene diamine tetraacetate, 0.5-1.5% of hydrofluoric acid, 1.5-3% of concentrated sulfuric acid and the balance of water to a proper amount of water, and uniformly mixing to obtain a composite acid; the method comprises the following steps: completely immersing glass with rainbow spots in a thermal composite acid solution, taking out the glass, cleaning the glass until no composite acid solution is left, adding calcium carbonate into waste liquid after cleaning is completed, and discharging the waste liquid after the pH value of the waste liquid is qualified. The glass cleaning agent has an efficient and comprehensive decontamination effect on glass rainbow spots, impurity ions difficult to remove are not introduced, and cleaned glass is high in light transmittance, low in haze and small in damage to a glass body.

The invention provides a method for synergistically removing impurities through pH regulation and complexing of ionic rare earth ore leachate, the ionic rare earth ore leachate is stirred and mixed uniformly, a plant polyphenol sulfonic acid derivative complexing agent is added, the complexing agent is prepared through sulfonation, neutralization, concentration and drying by taking gallic acid as a raw material, and the complexing agent can automatically regulate the pH value of the solution and stabilize the pH value at 5.1-5.3; under the condition, phenolic hydroxyl groups, carboxyl groups and sulfonic functional groups in complexing agent molecules preferentially form stable precipitates with impurity ions such as Al < 3 + > and Fe < 3 + > in the leachate, and the complexing effect with rare earth ions (RE < 3 + >) is weak; and after the reaction is completed, carrying out solid-liquid separation to obtain the purified leachate and impurity-containing precipitation slag. The method solves the problem of ammonia nitrogen pollution caused by use of ammonium bicarbonate, ammonia water and other ammonium salts in the traditional process, is a novel method with high impurity removal rate, simple process flow and environmental friendliness, and is suitable for industrial application.

The invention relates to the technical field of hydrogen production processes, in particular to a purification device for removing foreign ions in alkali liquor as well as a preparation method and application of the purification device. Based on the characteristic of selective adsorption of layered hydroxides, the device can remove foreign ions in the system. The device comprises a purification unit, and efficient adsorption is realized by utilizing a special crystal structure of layered hydroxide and through selective interaction between intercalation anions and target metal ions. And meanwhile, plasma is adopted to treat the surface of the layered hydroxide, so that adsorption active sites are increased. The device breaks through the limitation that a traditional alkaline hydrogen production system purification device cannot selectively remove cation impurities in the electrolyte, and in-situ continuous operation of electrolyte purification is achieved.

The application relates to the technical field of alumina preparation, and particularly discloses a method for reducing the alkalinity of alumina, which comprises the following operations: firstly, mixing alumina with an additive and an organic acid, then performing ball milling, and finally performing calcination; the additive can promote the adhesion of the organic acid and the alumina; the additive and the organic acid are both decomposed into water and carbon dioxide after calcination. The method for reducing the alkalinity of alumina can effectively reduce the pH value of the alumina, does not introduce other impurity ions, is simple to operate, has low energy consumption, and can be used as an adsorbent, a catalyst carrier and an additive in a battery material.

The invention relates to the field of hydrometallurgy, and discloses a method for converting hafnium oxalate feed liquid into hafnium sulfate feed liquid, which comprises the following steps: adding a sulfuric acid solution and an oxidizing agent into the hafnium oxalate feed liquid, and reacting at a certain temperature to obtain the hafnium sulfate feed liquid. Oxidants used in the method are preferably hydrogen peroxide and ozone, other impurity ions are not introduced, and the purity of the product is not influenced at all. Oxidation products are H2O and CO2 and are basically free of pollution to the environment. The process of evaporation, filtration, calcination, redissolution and the like of a traditional evaporation method and an alkali precipitation-redissolution method is not needed, the operation is simple, the efficiency is high, the cost is low, and the operability is high. The method for adding the sulfuric acid solution and the oxidizing agent into the oxalate feed liquid is also suitable for converting oxalate solutions of other metal ions into sulfate solutions, including but not limited to zirconium oxalate, titanium oxalate, thorium oxalate, scandium oxalate, niobium oxalate, tantalum oxalate, vanadium oxalate, cobalt oxalate, cesium oxalate and rubidium oxalate.

The application relates to an enhanced gallium oxide power transistor and a manufacturing method, the power transistor comprising a beta-Ga2O3 substrate, a beta-Ga2O3 unintentionally doped layer, a p-type NiOx buffer layer, an n-type beta-Ga2O3 channel layer, a p-type NiOx cap layer, a source electrode, a drain electrode and a gate electrode, wherein the beta-Ga2O3 substrate, the beta-Ga2O3 unintentionally doped layer, the p-type NiOx buffer layer and the n-type beta-Ga2O3 channel layer are stacked in sequence; the source electrode is located at one end of the n-type beta-Ga2O3 channel layer, the drain electrode is located at the other end of the n-type beta-Ga2O3 channel layer; the p-type NiOx cap layer is located on the n-type beta-Ga2O3 channel layer and between the source electrode and the drain electrode; and the gate electrode is located on the p-type NiOx cap layer. In the power transistor, a pn junction is formed between the p-type NiOx buffer layer and the upper n-type beta-Ga2O3 channel layer, which can prevent impurity ions in the beta-Ga2O3 unintentionally doped layer from penetrating into the channel layer, reduce the compensation effect of the impurity ions penetrating into the channel layer, improve the electron mobility of the channel layer, and improve the electron concentration in the channel layer and the current density of the device.

The invention relates to the technical field of photovoltaic material manufacturing, in particular to a quartz crucible manufacturing system and method.The system comprises forming equipment arranged in a first closed space and melting equipment arranged in a second closed space, and a discharging port of the forming equipment communicates with a feeding port of the melting equipment; the first air inlet device is communicated with the first closed space, an air inlet of the first air inlet device is lower than a mold forming position in the forming equipment, and the air inlet angle of the first air inlet device is larger than the included angle between an inclined plane formed by the mold forming position and the air inlet and the horizontal plane. The system and method provided by the invention can significantly reduce the impurity ion content of the quartz crucible, improve the purity of the transparent layer and prolong the service life of the transparent layer.

The utility model relates to the technical field of monopotassium phosphate production, and discloses an impurity removal device for monopotassium phosphate, which comprises an impurity removal pool, a crystallizing pool and a delivery pump, the bottom of the impurity removal pool and the bottom of the crystallizing pool are both communicated with a liquid discharge pipe, and a sealing valve is arranged at the port of the liquid discharge pipe; a mounting seat is fixedly mounted on the outer wall of the impurity removal pool, an electric sliding rail is fixedly mounted at the top of the mounting seat, a lifting plate is fixedly mounted at the movable end of the electric sliding rail, after the filter basket enters a solution, the solution can enter the filter basket, crystals separated out by impurities are intercepted by the filter basket, and the impurities are separated out by the lifting plate. The suction pipe in the filter basket sucks the solution entering the filter basket, the solution is transferred into the crystallizing pond through the delivery pump, the hose and the liquid inlet pipe, crystals separated out by impurity ions are still left in the impurity removal pond, and the filter is arranged before the transfer in the whole process, so that the state of the solution can be better maintained; therefore, the solution entering the crystallizing pond is pure enough.

The invention relates to the technical field of comprehensive utilization of non-ferrous metal smelting waste residues, and discloses a harmless treatment and valuable metal recovery method for arsenic-alkali residues, which comprises the following steps: carrying out selective leaching and antimony separation on the arsenic-alkali residues, and precipitating antimony by using solubility product difference to obtain arsenic-containing alkali filtrate; carrying out gradient carbonization crystallization under oxidation-reduction potential clamping on the filtrate, converting sodium carbonate into sodium bicarbonate crystals under the constraint of specific potential by utilizing the salting-out effect of pentavalent arsenic in a saturated sodium bicarbonate solution, separating out the sodium bicarbonate crystals, and filtering and separating to obtain a sodium bicarbonate product and arsenic-rich mother liquor; according to the method, through a coupling mechanism of potential clamping and gradient carbonization crystallization, the solubility difference of arsenic and alkali is constructed, the salting-out effect is utilized, the arsenic-alkali co-dissolution balance is broken on the premise that exogenous foreign ions are not introduced, and the arsenic-rich mother liquor is subjected to terminal mineralization to generate arsenic-containing mineral precipitates. Efficient separation and recovery of antimony and sodium carbonate and deep solidification of arsenic are realized.

The invention provides a method for preparing pure aluminum by regenerating waste aluminum through ionic liquid electrolysis, and belongs to the technical field of non-ferrous metal metallurgy. The method comprises the following steps: carrying out electrolytic dissolution by taking the waste aluminum alloy as an anode and the ionic liquid as an electrolyte to obtain the ionic liquid containing impurity ions; and carrying out constant potential deposition on the ionic liquid containing the impurity ions to obtain pure aluminum. The aluminum chloroaluminate ionic liquid is adopted as an electrolyte, the aluminum scrap is adopted as an anode, and the aluminum scrap component is dissolved out by regulating and controlling the potential of the anode; the insoluble impurities are separated in the form of anode mud, the soluble impurities are separated out in the form of aluminum alloy through constant potential deposition, electrolyte is purified, and finally, industrial pure aluminum is obtained through deposition in the purified ionic liquid. The method is low in operation temperature and free of harmful gas emission, solves the energy consumption and environmental bottleneck of the secondary aluminum industry, and breaks through the technical problem of impurity separation.

The application relates to a thorium and spallation element separation method, which comprises the following steps: injecting a thorium-based solution into column 1 to obtain a first effluent, washing column 1 with a first inorganic acid solution and a second inorganic acid solution in sequence to obtain a first washing solution and a first thorium solution respectively; injecting the first thorium solution into column 2 to obtain a second effluent, washing column 2 with a third inorganic acid solution and a second inorganic acid solution in sequence to obtain a second washing solution and a second thorium solution; mixing the first thorium solution and the second thorium solution, injecting into column 3 to obtain a third effluent, and washing column 3 with a fourth inorganic acid solution to obtain a third thorium solution. The method does not introduce other foreign reagents and is not polluted by foreign impurity ions, and the high ion potential of Th is utilized to preferentially adsorb on a cation column to achieve the purpose of separation from other spallation elements.

The invention discloses a gallium and germanium ion flotation separation method in the technical field of hydrometallurgy, and aims to solve the problems of poor selectivity and low recovery rate when low-concentration gallium / germanium is recovered from a high impurity ion background solution in the prior art. Efficient separation and enrichment of target ions are achieved through the processes of roughing, concentration and scavenging. Wherein a masking agent is added in the concentration stage to deeply purify foam products, and a collecting agent is added in the scavenging stage to maximize the recovery rate. According to the method disclosed by the invention, the simplification and synergistic interaction of the process are realized through the orderly addition of the functional agent and the coupling of the flotation process, the gallium / germanium ion flotation recovery rate can be stabilized at 95% or above within the wide range of pH 1.0-12.0, the key impurity ion entrainment rate is lower than 2%, and the technical problem of loose metal ion flotation separation under a complex system is fundamentally solved.

The invention provides a quenching crystallization reaction system for preparing layered composite metal hydroxides and a corresponding preparation method, a high-pressure cooling distributor is additionally arranged between a reaction kettle and a collecting tank, and the high-pressure cooling distributor comprises a cavity and a quenching device which are communicated with each other; and a low-temperature cooling medium enters the cavity from the quenching device, is in direct contact with the high-temperature reaction slurry and rapidly cools the high-temperature reaction slurry, so that the layered composite metal hydroxide with the surface defect active site can be obtained. According to the invention, a cooling liquid system consistent with hydrotalcite reaction slurry is adopted, construction of defect active sites is realized for hydrotalcite through a quenching type cooling mode under the condition of not introducing impurities, the product performance can be effectively improved, the equipment requirement is low, the process is simple, the cost is effectively reduced, and the method is suitable for industrial production. And meanwhile, the impurity ion introduction problem caused by acid-base solvent etching and the like is also avoided, the process cleanliness is guaranteed, and the method is very suitable for industrial implementation.

The application discloses a touch force sensor and a manufacturing method thereof. The touch force sensor comprises a silicon substrate, a pressure-sensitive resistor and a wire formed by injecting impurity ions into a first surface of the silicon substrate, an insulating film layer located on the first surface of the silicon substrate, the insulating film layer comprising a through hole, a silicon substrate signal electrode layer located on a side of the insulating film layer away from the silicon substrate, the silicon substrate signal electrode layer being electrically connected with the pressure-sensitive resistor and the wire through the through hole, a first annular layer located on a side of the insulating film layer away from the silicon substrate, a surface of the silicon substrate signal electrode layer away from the silicon substrate being in the same plane as a surface of the first annular layer away from the silicon substrate, a glass substrate signal electrode layer located on a side of the silicon substrate signal electrode layer away from the insulating film layer, and the glass substrate signal electrode layer being electrically connected with the silicon substrate signal electrode layer. The application can realize high-precision alignment of the cavity and the pressure-sensitive resistor, and avoid the problems of process risk and stress residue caused by using an insulating thick film to manufacture the cavity.

The invention relates to the technical field of inorganic salt mother liquor treatment, in particular to an inorganic salt mother liquor recycling system based on MVR evaporative crystallization, which comprises three groups of sedimentation tanks and separation cylinders fixedly communicated with the bottoms of the sedimentation tanks, stirring components and sealing conical seats are arranged in the separation cylinders, and the tops of the sedimentation tanks are connected with liquid storage hoppers through liquid inlet pipes. An electromagnetic control valve is arranged on the liquid inlet pipe, and a calcium hydroxide solution, a sodium carbonate solution and a barium chloride solution are sequentially arranged in the multiple liquid storage hoppers from left to right; through staged treatment of the three groups of sedimentation tanks, the ion selective electrode sensor and the controller are combined to precisely add corresponding agents, the hetero ions are removed step by step in a targeted manner, and the subsequent progressive deep purification treatment is matched, so that a high-quality water quality basis is provided for efficient recycling of the mother liquor; and the problems of crystal quality reduction, equipment scaling and the like caused by hetero-ion enrichment are effectively avoided.

This invention discloses a method for the synergistic control and removal of organic matter in the hydrometallurgical process of zinc smelting, belonging to the field of hydrometallurgical technology. It includes the following steps: incorporating the TOC content of manganese ore powder and iron removal agent into quality monitoring and limiting content thresholds; controlling the addition amounts of flocculant, bone glue, and organic cobalt removal agent; and simultaneously adjusting the concentrations of zinc ions and soluble silicon in the supernatant to reduce liquid viscosity, thereby reducing the introduction of impurities at the source; adding activated carbon to the purification process to adsorb organic matter; and adding a waste liquid circulation filtration system to the electrolysis process, while selectively adding modified activated carbon to remove suspended solids, organic matter, colloids, and harmful impurity ions from the electrolytic waste liquid. This invention achieves three main benefits: first, it establishes a synergistic removal system for fine suspended solids, colloids, organic matter, and impurity ions; second, it increases the electrolysis current efficiency to over 90% and reduces cell voltage; and third, it improves the utilization efficiency of fresh liquid and reduces overall production costs.

The invention relates to a method for recovering germanium in germanium distillation raffinate and carrying out gradient purification and impurity removal, belongs to the technical field of germanium distillation raffinate resource recovery, and aims at the characteristics that impurity ions in the germanium distillation raffinate are high in concentration, and germanium and impurities are difficult to effectively separate due to similar properties. Short-process efficient and high-purity productization recovery of germanium in the germanium distillation residual liquid is realized by adopting a pretreatment-ion exchange-chlorination distillation technical route, and comprehensive recovery and resource utilization of lead, chlorine, zinc and the like in the germanium distillation residual liquid are realized by adopting an acidification lead precipitation-negative pressure distillation-neutralization impurity removal technical route. According to the method, the high-purity GeCl4 product is directly extracted and produced from the germanium-containing wastewater by adopting chemical modification and ion exchange methods, and compared with the existing process, the method has the technical advantages of high comprehensive utilization rate, short-range high efficiency, greenness, cleanness and the like.

The invention discloses a method for separating rhenium from a rhenium-rich solution containing molybdenum and tungsten. The method comprises the following steps: extracting a rhenium-rich raw material solution containing ReO4 <-> and impurity ions by using an extraction agent containing hydrophobic ionic liquid to obtain an organic extraction phase containing ReO4 <-> and a raffinate phase containing the impurity ions; wherein the solvent of the raw material solution is water, and the impurity ions comprise one or two of MoO4 < 2-> and WO4 < 2->; the hydrophobic ionic liquid is composed of positive ions and negative ions, the anions are selected from one or more of halide ions, borate anions, carboxylate anions, carbonate anions, nitrate ions, nitrite ions, sulfate anions, sulfite anions, sulfonate anions, phosphate anions, phosphite anions, thiocyanate anions and amino acid ions. The method is high in separation efficiency, simple in technological process, easy to amplify, small in extraction agent loss, capable of being recycled and suitable for industrial production.

The invention discloses a method for purifying a high-purity material. The method comprises the following steps: converting a solid or liquid impurity-containing material into gaseous atoms or atomic clusters; ionizing the gaseous atoms or atomic clusters into charged ions; applying a first electric field and a first magnetic field to the charged ions so as to enable the charged ions to form a collimated ion beam; a second magnetic field is applied to the straightened ion beam, so that impurity ions and material ions in the ion beam are separated from each other; and applying a second electric field on the movement path of the ion beam separated from the impurity ions to reduce the movement speed of the ion beam to a second speed, and collecting the material ions in the ion beam to obtain the high-purity material. The method for purifying the high-purity material is simple in technological process and lower in cost, the purity of the obtained material can reach 7N, 8N or even higher, and the method has important significance in the fields of scientific research and production.