199 results about "Rubidium" patented technology

The invention discloses a method for selectively extracting rubidium from lithium ore tailings in a short process, and relates to the field of comprehensive utilization of mineral waste. The method comprises the following steps: grinding the lithium ore tailings into powder; adding an additive into the lithium ore tailing powder, and fully stirring and mixing; roasting the mixture to obtain a calcined clinker; directly carrying out water leaching on the calcined clinker; rubidium enrichment liquid and leaching residues are obtained from the leaching liquid through solid-liquid separation; the rubidium extraction composite material is mixed with rubidium enrichment liquid, and selective adsorption of rubidium is achieved; and recycling the composite material, and the like. According to the method, efficient selective recovery of rubidium in the lithium ore tailings is achieved, the water leaching time is shortened, the water leaching temperature and the rubidium extraction roasting reaction temperature are reduced, the separation efficiency of impurities in the lithium ore tailings and the selective recovery efficiency of the rubidium element are remarkably improved, and efficient selective recovery of rubidium in the lithium ore tailings is achieved.

The invention provides an alkali metal group ion selective permeable membrane, a preparation method and a lithium, rubidium and cesium extraction method and system, and the membrane is prepared by taking polyphenylene sulfide, Zr (HPO4) 2 and a high-molecular polymer adhesive as raw materials through mixing, fibration treatment and compression molding processes. Based on the weak dipole adsorption characteristic between the sulfur position of high-crystallization polyphenylene sulfide and alkali metal cations, efficient screening of monovalent alkali metal ions (Li < + >, Rb < + > and Cs < + >) and multivalent impurity ions (Mg < 2 + >, Al < 3 + > and Fe < 2 + >) is achieved, and the method can be used for extracting rubidium and cesium. The ion selective permeable membrane has excellent mechanical properties, high separation efficiency and corrosion resistance, and is low in production cost; and finally, the multiple targets of lepidolite leaching liquid impurity removal and lithium rubidium cesium synergistic extraction are achieved.

The invention provides a metal material recycling device and a method for leaching fluorine beryllium thallium and lithium rubidium cesium in lithium slag. Relates to the field of metal material recycling, and comprises a leaching tank placed on the ground through four supporting frames, the top of the leaching tank is fixedly provided with a top cover, and the bottom of the leaching tank is fixedly provided with a bottom cover. According to the metal material recycling device and the leaching method for fluorine beryllium thallium and lithium rubidium cesium in the lithium slag, the ultrasonic generator is arranged to supply energy to the first ultrasonic transducer and the second ultrasonic transducer to generate ultrasonic waves, the ultrasonic waves generate microjet flow to impact the surface of minerals, acid liquor permeation and ion diffusion are accelerated, the leaching time is shortened, and the efficiency is improved; the surface of the lithium slag is not prone to passivation, the leaching rate of target metal ions is increased, the leaching liquid is pumped out through the water suction pump, manual contact with the leaching liquid in the next solid-liquid separation procedure is facilitated, dilute sulfuric acid is supplemented through the acid supplementing pipe, then the lithium slag is placed through the funnel, and the consistency and controllability of starting of the leaching reaction are guaranteed.

The invention discloses a catalyst for hydrogen production through ammonia decomposition under mild conditions and preparation and application thereof, regular octahedral magnesium oxide is adopted as a carrier, a small amount of metal salt, a structure auxiliary agent, a pore forming agent and an adhesive are added in the preparation process, and the integral catalyst for hydrogen production through ammonia decomposition is obtained through the steps of mixing, ageing, extruding, drying and the like. The catalyst comprises the following components in percentage by mass: 55-99.87% of MgO, 0.1-5% of Ru and 0.01-5% of SiO2, and contains one or more of the following metal components: 0.1-25% of Me1 (Me1 is one or more of lanthanum, cerium, praseodymium, neodymium, samarium, gadolinium, ytterbium, molybdenum, iron, cobalt and nickel) and 0.02-10% of Me2 (Me2 is one or more of lithium, sodium, potassium, rubidium and cesium). The catalytic reaction conditions are mild, and the ammonia conversion rate of the ammonia decomposition hydrogen production reaction is higher than 99% within the working temperature range of 400-600 DEG C.

The invention provides a pretreatment device and method for extracting rubidium and cesium metals from lithium waste residues. The pretreatment device comprises a control system, a grinding unit, a screening unit, a dissolving unit and a recycling system, a feeding port and a discharging port communicated with the screening unit are formed in the grinding unit, and the screening unit, the dissolving unit and the filtering unit are sequentially arranged and connected through conveying pipelines respectively; the screening unit comprises a screening barrel and n elastic screens mounted in the screening barrel; the elastic screens incline downwards, the (n-1) elastic screens penetrate through the screening barrel to form recovery ports, and the recovery system enables the (n-1) recovery ports to be communicated with the feeding port. According to the method, the problems of low screening efficiency, insufficient grinding, poor dissolving effect, easiness in filtering blockage and the like in the existing pretreatment process of extracting the rubidium and cesium metals from the lithium waste residues are solved, so that the extraction efficiency of the rubidium and cesium metals is improved.

The invention provides a method for removing trace impurity elements from high-purity rubidium salt, which belongs to the technical field of metallurgy and comprises the following steps: dissolving the high-purity rubidium salt with deionized water to obtain a high-purity rubidium salt solution; adding a precipitator into the high-purity rubidium salt solution to carry out selective precipitation reaction of rubidium to obtain a rubidium-containing precipitation product, and preliminarily removing impurity elements such as sodium, potassium and cesium; the rubidium-containing precipitation product is filtered and then subjected to roasting treatment, the rubidium-containing precipitation product is subjected to a decomposition reaction, and a roasted product is obtained; an acidic transformation agent is added into the roasted product for a transformation reaction, and a rubidium salt solution is obtained; impurity elements such as sodium, potassium and cesium in the product are further removed through a recrystallization refining method, and the rubidium salt product with the purity reaching 99.9% or above is obtained. The method can effectively remove trace impurity elements in the high-purity rubidium salt, and has the advantages of short flow, few procedures and high product purity.

The invention provides a preparation method and system of high-purity metal rubidium or cesium, the method comprises the following steps: taking metal rubidium or cesium as a raw material, taking molten metal Ag as an extraction medium, utilizing the characteristics that Na, Li and K have certain solubility in metal Ag and rubidium and cesium are insoluble in Ag, reducing the content of impurities Na, Li and K in the metal raw material rubidium or cesium, and then carrying out vacuum distillation to obtain the high-purity metal rubidium or cesium. According to the method, purification and impurity removal are conducted on the metal rubidium or cesium through melt extraction, the metal raw material rubidium or cesium can be treated to prepare the high-purity metal rubidium or cesium product, the purification rate of Na and Li is 80% or above, the purification rate of K is 50% or above, the purity of the prepared high-purity rubidium is 99.90% or above, the purity of the prepared high-purity cesium is 99.95% or above, the yield is 95% or above, the technological process is short, equipment is simple, and the method is suitable for industrial production. The problems of low efficiency and unobvious impurity removal effect of traditional distillation are solved.

The invention relates to the technical field of spectral measurement, in particular to a portable human body rubidium microelement detector and a spectral detection method. Converting the spectral data to obtain an absorbance curve; carrying out data segmentation on the absorbance curve, and calculating to obtain a baseline drift degree of the absorbance curve based on a segmentation result; performing baseline correction on the absorbance curve based on the baseline drift degree in combination with an iterative adaptive baseline correction algorithm to obtain an absorbance curve after baseline correction; and comparing the absorbance curve after the baseline correction with a standard absorbance-concentration curve to obtain the concentration of the rubidium element. According to the method, for the phenomenon that the content of the rubidium element is relatively low, the baseline drift degree of the spectral data is analyzed in a targeted manner, and the baseline drift degree is set as an iteration termination condition of an iteration self-adaptive baseline correction algorithm, so that a baseline drift part in the spectral data is separated, and the accurate content of the rubidium element in a sample is obtained on the basis of conversion.

Two ends of a flexible pipe are fixedly connected to a grip and a magnetic guide ring respectively, an electromagnet is fixedly mounted in the magnetic guide ring, a rubidium magnet is connected to the outer end of the magnetic guide ring in a threaded fit manner, a through hole is formed in the magnetic guide ring, and one end of an air pipe is communicated and connected to the through hole; the magnetic attraction mode can be selected according to the type of metal, when large-size metal needs to be picked up, only the rubidium magnet needs to be installed on the magnetic guide ring, the metal can be attracted to the rubidium magnet, and cleaning and collecting are convenient; when some metal chips are cleaned, the electromagnet brings magnetic force to the magnetic guide ring, so that the metal chips are adsorbed on the magnetic guide ring; during discharging, only the electromagnet needs to be closed, the magnetic force of the magnetic guide ring disappears, the chippings can fall off, in order to prevent the chippings from being attached to the interior of the magnetic guide ring, the chippings can be blown out of the magnetic guide ring by blowing air into the air pipe, and follow-up use is facilitated.

The invention provides a method for treating rubidium ore through cooperation of sulfuric acid and hydrochloric acid and comprehensively utilizing valuable metals, and belongs to the technical field of rare metal extraction. The ground rubidium ore is subjected to ore phase activation with hydrochloric acid, impurity calcium in the rubidium ore is synchronously removed, and activated slag and activated liquid are obtained; decalcifying the activating solution by using sulfuric acid, and recycling the obtained regenerated hydrochloric acid; curing and roasting the activated slag by using concentrated sulfuric acid to obtain cured slag; performing water leaching on the cured slag to obtain silicon slag and water leaching liquid; separating rubidium from the water extract through controllable cooling crystallization to obtain a rubidium-containing enriched product and a crystallization residual liquid, and sequentially dissolving, extracting and reversely extracting the rubidium-containing enriched product to obtain rubidium salt; performing freezing crystallization on residual crystallization liquid to obtain potassium alum, and returning crystallization mother liquor to serve as leaching water. According to the method, rubidium and potassium products with high economic value are produced, a large number of components of aluminum and silicon are productized, comprehensive utilization of resources is achieved, and the method has the advantages of being short in technological process and easy and convenient to operate.

The invention provides a lepidolite tailing rubidium and cesium extraction device, a rubidium and cesium efficient extraction agent and a preparation method of the rubidium and cesium efficient extraction agent, and relates to the technical field of metal material recycling. The driving mechanism comprises a mounting seat fixedly arranged at the bottom of the front surface of the treatment tank, the inner side of the mounting seat is rotationally connected with a rotating rod, and a surface key groove of the rotating rod is connected with a driving gear. According to the scheme, the pH value of the lepidolite leachate is finally and rapidly adjusted in a targeted mode, the problem that local pH value fluctuation is large due to the fact that excessive pH adjusting liquid is put at a time is solved, the problem that the pH adjusting efficiency of the lepidolite leachate is low due to the fact that the pH adjusting liquid is put intermittently can be solved, gas is injected into the lepidolite leachate at the same time, and the efficiency of adjusting the pH value of the lepidolite leachate is improved. While the pH adjusting liquid and the lepidolite leaching liquid are helped to be fused, the liquid turbulence is enhanced, the concentration gradient is reduced, the pH value of the lepidolite leaching liquid is rapidly adjusted, and the extraction efficiency of rubidium and cesium metal is improved.

The invention belongs to the technical field of geological sample analysis and detection, and particularly discloses a method for measuring the amount of each element of lithium ore in a closed acid-soluble system, and the method comprises the following steps: pretreating the lithium ore; the pretreated lithium ore is weighed and put into a closed sample dissolving device, hydrofluoric acid and purified nitric acid are sequentially added, and the closed sample dissolving device is closed; carrying out heat preservation on the closed sample dissolving device twice to obtain a test solution; and measuring the test solution by using an inductively coupled plasma mass spectrometer to obtain a working curve, and calculating the content of the analysis element in the sample solution by using the working curve. The method for determining the amount of each element in the lithium ore by adopting the closed acid-soluble system has the characteristics of simplicity in operation, high efficiency and good stability, realizes simultaneous determination of the amount of lithium, rubidium, cesium, beryllium, strontium, niobium, tantalum, zirconium, hafnium and rare earth elements in the large-batch lithium ore, and further provides a reference for determination of main trace elements in the lithium ore.

The present invention relates to a process for separating rubidium ions from saline solutions rich in other monovalent ions, particularly sodium and potassium. The process relies on rubidium ions adsorption via ion exchange performed by metal-hexacy anoferrate particles. The process of the present invention provides pure rubidium salt with estimated production costs that do not exceed 20% of the current price.

The invention provides a rubidium and cesium adsorbent and a preparation method and application thereof. The preparation method comprises the following steps: providing a doped and modified Prussian blue analogue, wherein the Prussian blue analogue comprises a Prussian blue matrix material and a transition metal doping element doped in the Prussian blue matrix material; granulating a mixed material containing the doped and modified prussian blue analogue and a granulating agent to obtain a rubidium and cesium adsorbent precursor; a mixed reaction system containing the rubidium and cesium adsorbent precursor and a surface modifier are subjected to a reaction, the surface modifier contains one or more functional structures of an amino group, a sulfonic group, a carboxyl group, a sulfydryl group, an acryloyloxy group, an epoxy group, a crown ether structure and a calixarene structure, and therefore the rubidium and cesium adsorbent is obtained. Through a multi-aspect synergistic strategy of transition metal doping, granulation and surface modification, the prepared rubidium and cesium adsorbent has good stability and high adsorption capacity, and has strong selectivity to Cs < + > / Rb < + >.

The invention discloses an ammoxidation catalyst and a preparation method and application thereof, the active component of the catalyst is represented by a general formula MoxBiaFebAcBdCeDfEgFhOy, A represents at least one element selected from the combination of a nickel element, a cobalt element, a manganese element, a zinc element and a cadmium element; b represents at least one element selected from the group consisting of magnesium, strontium and barium elements; c represents at least one element selected from a combination consisting of potassium, rubidium and cesium elements; d represents at least one element selected from the group consisting of a tungsten element, a vanadium element, a chromium element, a gallium element, a germanium element, a scandium element, an yttrium element, an indium element, a tin element, and an antimony element; e represents at least one element other than promethium element among lanthanide elements; f represents at least one element among platinum group elements. According to the present invention, the composition ratio of the active components of the catalyst is regulated according to the action mechanism of the metal catalyst, such that the comprehensive performance of the catalyst is improved, and the high trinitrile product yield and the low trinitrile yield material consumption are provided.

The invention discloses a method for strengthening flotation recovery of micro-fine particle rubidium and cesium co-associated lepidolite. The method mainly comprises the following steps: blending the micro-fine particle rubidium and cesium co-associated lepidolite into ore pulp by using micro-nano bubble deionized water; sequentially adding a regulating agent and an anion-cation combined collecting agent, fully stirring, and regulating the pH value of the ore pulp; and a flotation machine is used for sorting the evenly-stirred ore pulp, and rubidium and cesium co-associated lepidolite concentrate is obtained. According to the flotation result, on the premise that the using amount of the collecting agent is the same, the recovery rate of the cavitation micro-nano bubble flotation is increased compared with that of conventional bubble flotation, and the flotation recovery rate of the micro-fine particle rubidium-cesium co-associated lepidolite which is an important metal mineral resource can be remarkably increased through the method; and efficient recovery of the rubidium-cesium carrier minerals is effectively realized.

The invention discloses a method for preparing an adsorption material for simultaneously extracting rubidium and cesium by using soft / hard template co-assembly and application, and belongs to the technical field of adsorption material preparation. The invention aims to solve the problems that a traditional adsorbent is poor in selectivity to similar alkali metal ions, slow in mass transfer rate, insufficient in acid environment stability and lack of an adsorption material for specific recognition of rubidium and cesium ions. The method comprises the following steps: 1, preparing cesium-imprinted hierarchical-pore mesoporous silica; 2, Cs / Rb-HMS is prepared; according to the invention, a macroporous-mesoporous channel is constructed; wherein a large hole (PS template) provides a rapid mass transmission channel, and an ion diffusion path is remarkably shortened, so that target ions can rapidly reach adsorption sites in the material; mesopores (Pluronic F127 template) provide a huge specific surface area and load a large number of Cs < + > imprinting sites and Rb < + > imprinting polymer layers, so that high adsorption capacity to Cs < + > and Rb < + > is ensured.

The invention relates to the technical field of mineral separation, and provides a segmented enrichment and recovery method for lithium-containing porcelain clay ore co-associated with rubidium and cesium, which comprises the following steps: grinding the lithium-containing porcelain clay ore to obtain ground ore pulp; the ore grinding pulp is subjected to sedimentation desliming, and settled sand and slime are obtained; the settled sand is subjected to size mixing, and to-be-separated ore pulp is obtained; lepidolite flotation is conducted on the to-be-separated ore pulp through a lepidolite collecting agent, and lithium separation tailings and lepidolite concentrate containing rubidium and cesium are obtained; carrying out potassium feldspar flotation on the lithium separation tailings by adopting a potassium feldspar collecting agent to obtain re-separation tailings and potassium feldspar concentrate containing rubidium and cesium; and fluoride-free separation of feldspar and quartz is conducted on the recleaning tailings, and feldspar concentrate and quartz concentrate are obtained. According to the segmented enrichment and recovery method provided by the invention, comprehensive utilization of co-associated rubidium and cesium in the ore can be realized to the greatest extent while the recovery of the main utilization mineral lepidolite is preferentially ensured, and qualified feldspar products and quartz products are obtained.

The invention relates to the field of hydrometallurgy, and discloses a method for converting hafnium oxalate feed liquid into hafnium oxychloride feed liquid, which is characterized by comprising the following steps: adding an HCl solution and an oxidizing agent into the hafnium oxalate feed liquid, and reacting at a certain temperature to obtain a hafnium oxychloride solution. The method has the advantages of simple operation, no introduction of any metal impurity ions, small reagent consumption, low energy consumption, low cost, high efficiency, no physical state change, and realization of continuous production. The method for adding the HCl solution and the oxidizing agent into the oxalate feed liquid is also suitable for converting oxalate solutions of other metal ions into chloride 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 invention relates to the field of adsorption materials, and discloses a rubidium and cesium ion adsorption material and a preparation method and application thereof.The rubidium and cesium ion adsorption material comprises a framework and an organic sulfonate and / or organic sulfate modified metal ferricyanide adsorbent dispersed in the framework; the skeleton comprises polyvinyl alcohol and cross-linked sodium alginate; the skeleton is connected with the organic sulfonate and / or organic sulfate modified metal ferricyanide adsorbent through an amino-containing silane coupling agent. In the long-term use process of the rubidium and cesium ion adsorption material, the metal ferricyanide adsorbent is not prone to falling off, and the rubidium and cesium ion adsorption material has high rubidium and cesium saturation adsorption capacity and excellent stability.

The invention discloses a pyrophosphomolybdate adsorbent material for extracting rubidium and cesium from salt lake brine and its preparation method and application, and the preparation includes the following steps: S1, preparation of silicon aluminum phosphate aluminum complex: adding silicon source, aluminum source, phosphorus source, composite structure directing agent and deionized water to a reaction device, regulating the pH of the solution to 4-8, stirring, crystallization reaction, filtering and washing after the reaction is completed to obtain a silicon aluminum phosphate aluminum complex; S2, immobilization of molybdenum source: mixing the silicon aluminum phosphate aluminum complex obtained in step S1 with the molybdenum source uniformly, and then roasting, ammonium conversion and granulation treatment are carried out in sequence to obtain a pyrophosphomolybdate adsorbent material. The pyrophosphomolybdate adsorbent material prepared by the present invention is suitable for extracting rubidium and cesium from salt lake brine, and has the advantages of low dissolution loss, large adsorption capacity, high adsorption rate, convenient elution, and reusability.

The invention provides a method for extracting potassium, sodium, rubidium and cesium in lithium slag, which comprises the following steps: S1, carrying out first mixing on the lithium slag and a leaching agent to obtain a mixture; the leaching agent comprises Mg (OH) 2 and CaO; s2, mechanically activating the mixture to obtain a pretreated material; the mechanical activation comprises the following steps: carrying out ball milling on the mixture; s3, carrying out second mixing on the pretreated material and water to obtain a first reaction solution; the second mixing is carried out at the temperature of 40-70 DEG C; s4, performing hydrothermal treatment on the mixed solution to obtain a second reaction solution; the temperature of the hydrothermal treatment is 120-170 DEG C; s5, the second reaction liquid is subjected to solid-liquid separation, and a metal extracting solution and tailings are obtained; the metal extracting solution contains a potassium element, a sodium element, a rubidium element and a cesium element. According to the method, efficient extraction of potassium, sodium, rubidium and cesium in the lithium slag can be achieved at the low hydrothermal temperature.

The present invention relates to a method for producing a composite adsorbent of ferrocyanide of a transition metal in the matrix of silica gel comprising the following steps: (i) preparing a first aqueous composition comprising at least the mixture of a sodium or potassium ferrocyanide with a sodium silicate solution so as to obtain the dissolution of salts; (ii) preparing a second composition comprising the mixture of at least: a transition metal salt chosen from one or more of the following compounds: nickel, copper, zinc, cobalt, and an inorganic acid; (iii) mixing the first aqueous composition with the second composition until a suspension is obtained; (iv) adding an inorganic acid or base so that the suspension obtained at the end of step (iii) has a pH ranging from 4 to 9;(v) demixing the suspension obtained at the end of step (iv) so as to obtain a precipitate within a liquid phase; (vi) separating said precipitate, rinsing and drying the precipitate, so as to obtain a solid precipitate, characterized in that the first aqueous composition comprises a soluble rubidium or cesium salt, and the second composition further comprises a soluble metal salt chosen from one or more of the following compounds: aluminum, titanium, zirconium.;

The invention provides a method and a device for preparing an adsorbent for adsorbing rubidium and cesium from lepidolite leachate. The preparation method of the adsorbent for adsorbing rubidium and cesium from the lepidolite leachate comprises the following steps: S1, weighing straw powder, and carrying out soda boiling treatment on the straw powder; s2, filtering while hot, collecting filter residues, washing with deionized water, and drying; s3, transferring the filter residues into a high-pressure kettle, and adding deionized water for hydrothermal reaction to obtain a reaction product. According to the preparation method and device of the adsorbent for adsorbing rubidium and cesium from the lepidolite leaching solution, the adsorbent has the effects of high adsorption capacity, good selectivity and stability in the aspect of rubidium and cesium adsorption, and the material can adsorb a large number of rubidium and cesium ions due to the rich pore structure and ion exchange sites; and the enrichment capacity on low-concentration rubidium and cesium is improved.

The invention relates to the technical field of separation and extraction, in particular to a device for extracting and separating rubidium and cesium in lithium slag, which comprises a base and a fixed frame fixedly mounted on the base, and further comprises a movable frame inserted on the inner wall of the fixed frame; the liquid inlet mechanism is used for conveying a mixed solution of lithium slag into the separation tower; the filtering mechanism is used for intercepting solid impurities of the mixed solution; and a self-adaptive mechanism. According to the device for extracting and separating rubidium and cesium in the lithium slag, the self-adaptive mechanism can be driven to operate according to different mixed solution flows, and the self-adaptive mechanism can drive the movable frame to move relative to the fixed frame, so that the internal volume of the mixed solution treatment and separation tower is changed to adapt to different mixed solution flows. When the form of the separation tower is changed, the inclination of the inclined filter plate in the filter mechanism is synchronously driven to change, and the inclination is increased, so that a mixed solution can flow on the surface of the separation tower, and filter holes in the separation tower can be fully utilized when the water flow is small.

The present invention provides a method and system for preparing high-purity rubidium or cesium metal. In this method, rubidium or cesium metal is used as the raw material, and molten metal Ag is used as the extraction medium. By utilizing the fact that Na, Li, and K have a certain solubility in metal Ag while rubidium and cesium are insoluble in Ag, the contents of impurities Na, Li, and K in the rubidium or cesium metal raw material are reduced, and then high-purity rubidium or cesium metal is obtained through vacuum distillation. The present invention purifies and removes impurities from rubidium or cesium metal through melt extraction, can process the rubidium or cesium metal raw material to obtain high-purity rubidium or cesium metal products. Among them, the purification rates of Na and Li are above 80%, the purification rate of K is above 50%, the purity of the prepared high-purity rubidium is above 99.90%, the purity of the prepared high-purity cesium is above 99.95%, the yield is above 95%, and the process flow is short and the equipment is simple, solving the problems of low traditional distillation efficiency and unobvious impurity removal effect.

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 present application belongs to the field of mineral flotation, and particularly relates to a method for enriching rubidium and / or cesium in a mineral by flotation, wherein a target mineral containing at least one target element of rubidium and / or cesium is mixed with a flotation reagent containing a collector of formula 1 to perform flotation, and a flotation concentrate enriched with the target element is collected. 10 ~C 18 The alkyl group, M is H, Na, K or ammonium ion. The present application shows that the collector of formula 1 is used innovatively, which can realize synergy based on the combination of intramolecular-COO and R-N- in the alpha position, so as to adapt to the collection characteristics of rubidium and / or cesium minerals, and excellent collection and enrichment effect of rubidium and / or cesium minerals can be obtained.

The invention belongs to the technical field of salt lake resource development and rare metal recovery, and discloses a fibrous rubidium adsorbent as well as a preparation method and application thereof, a metal-based Prussian blue analogue spinning solution is synthesized in a non-aqueous system through a one-pot method, and the fibrous rubidium adsorbent is directly prepared through wet spinning. The preparation of the powder adsorbent and the molding of the composite material are integrated, so that the process is simplified, and the problem of powder agglomeration is avoided. The prepared fibrous rubidium adsorbent has the rubidium ion adsorption capacity of 248.73 mg / L, achieves adsorption equilibrium within 7 min, is suitable for industrially recovering rubidium from high-salinity salt lake brine, and has remarkable economic and environmental benefits.

The present application relates to the technical field of metallurgy, and particularly relates to an extraction device for rubidium and cesium salts in lepidolite. The present application can improve the efficiency of extracting rare metal elements from lepidolite, reduce the waste of rare resources, and help to simplify the process operation of extraction. The present application comprises a support, an extraction cylinder, a plate cover, a bolt and the like. The extraction cylinder is fixedly connected to the upper part of the support. Plate covers are clamped on both sides of the middle part of the extraction cylinder. Bolts are inserted into the left and right sides of the middle part of the extraction cylinder. The present application drives the six-sided rod to rotate by rotating the threaded rod driven by the motor, so that the stirring rod rotates and stirs the solid-liquid mixture of the mixed lithium mica powder and dilute sulfuric acid solution on the high-temperature rubber plug, avoids the precipitation of the lithium mica powder, and further makes the lithium mica powder and the dilute sulfuric acid solution fully mixed, so that the chemical reaction occurs rapidly, and the metal elements such as rubidium, cesium and lithium in the lithium mica powder are extracted.