17 results about "Scandium chloride" patented technology

The invention relates to the technical field of hydrometallurgy, in particular to a method for recycling scandium oxide from scandium slag, scandium oxide and application of the scandium oxide. According to the method, the scandium residues obtained from MHP are subjected to acid leaching, then pass through an N1923 extraction section, then pass through a P350 extraction section and then pass through an N235 extraction section, and finally a scandium chloride solution is subjected to scandium precipitation treatment and roasting, so that high-purity scandium oxide is obtained. The method has the advantages that an alkali reverse flow required by a scandium-containing loaded organic phase is avoided, the whole extraction section can be performed in an extraction tank without filtering operation, the automation degree is high, the continuity is good, the flow is short, and the acid consumption is greatly reduced, meanwhile, the amine extraction agent N1923 is firstly used and has strong selectivity on scandium, and when the amine extraction agent N1923 is used for separating most impurities in the first extraction section, the scandium content is greatly reduced; the temperature required by extraction and reverse extraction is lower than the temperature required by an acidic phosphine extraction agent, so that aging and deterioration of an organic phase are avoided, the stage number of the reverse extraction stage is greatly reduced, and the production cost is remarkably reduced.

The invention belongs to the field of chemical engineering, and particularly relates to a preparation method of scandium trichloride, which comprises the following steps: a) mixing scandium-containing ferro-manganese slag with carbon, and preheating to obtain a preheated material; b) chlorinating the preheated material to obtain a chloride material; c) feeding the chloride material into a vacuum smelting furnace for low-temperature vacuum smelting, raising the smelting temperature after low-boiling-point components in the material in the furnace are completely volatilized, and collecting scandium trichloride volatilized from the smelting furnace by using an organic solvent to obtain a solution containing scandium trichloride; d) removing the organic solvent in the solution to obtain scandium trichloride. According to the method provided by the invention, the high-purity scandium trichloride can be produced by using the iron-manganese slag, the scandium resource in the iron-manganese slag can be efficiently recycled, and the method has good economic benefits and environmental benefits.

The application discloses a kind of metal organic framework materials, preparation method and its application in photodynamic sterilization, it is related to biological medicine technical field, preparation method includes, and it is prepared to A solution by dissolving with the preparation of mid-four (4-carboxyl phenyl) porphyrin is added N,N-dimethylformamide;Scandium chloride hexahydrate is dissolved in ultrapure water, and B solution is prepared;The A solution and B solution prepared are mixed, and are treated with ultrasound, so that two kinds of solutions are fully mixed to prepare mixed solution;The mixed solution is treated with microplasma;After the mixed solution treated with microplasma is centrifuged, and metal organic framework solid is obtained.The application uses microplasma treatment to provide a large number of high-energy electrons in discharge process, promotes the rapid deprotonation of organic linker, has the advantages such as small volume, low energy consumption, simple and fast and reagent green.

In order to solve the technical problem that an industrial preparation method of scandium metaphosphate is lacked in China at present, the invention provides a preparation method of optical-grade scandium metaphosphate, and the optical-grade scandium metaphosphate with the purity reaching 99.9% or above can be produced. The method comprises the following steps: dissolving scandium chloride hexahydrate by using a hydrochloric acid solution to obtain a scandium chloride solution, filtering and recrystallizing to obtain scandium chloride hexahydrate crystals, and reacting the scandium chloride hexahydrate crystals with an ammonium carbonate solution to obtain high-purity scandium carbonate; then, the diluted food-grade phosphoric acid and the high-purity scandium carbonate are subjected to a heat preservation stirring reaction, scandium dihydrogen phosphate crystals are obtained, the scandium dihydrogen phosphate crystals are subjected to low-temperature drying foaming treatment and high-temperature treatment, and scandium metaphosphate is obtained. According to the method, the optical-grade scandium metaphosphate with the purity reaching 99.9% or above can be industrially produced, and the use requirement of optical glass firing is met.

The invention relates to a sodium fluoscandate preparation method, which comprises: mixing a scandium chloride solution and an EDTA-2Na solution, and adjusting the pH value and the temperature to obtain a complexing solution; mixing sodium fluoride with the complexing solution, and carrying out fluoridation reaction to obtain a sodium fluoscandate precipitate; and washing and drying the sodium fluoscandate precipitate to obtain the sodium fluoscandate. According to the method, the scandium chloride solution and the EDTA-2Na solution are used, so that the binding rate of Sc < 3 + > and F <-> is reduced, the particle aggregation phenomenon is avoided, the separation efficiency is improved, and the sodium fluoscandate with relatively high purity is obtained.

The invention provides a method for extracting and enriching scandium from MHP, and belongs to the field of hydrometallurgy. The method has the advantages that the operation steps are simple, the scandium element in the MHP raw material is extracted and enriched by using the organic amine extraction agent N1923, the scandium chloride product obtained by the extraction, washing and reverse extraction of the N1923 extraction agent can effectively remove impurities and form an industrialization mode, the separation cost is lower, the flow is shorter, the scandium resource can be efficiently recycled, the MHP resource utilization rate is increased, and the method is suitable for industrial production. The method has great industrial potential.

The invention relates to the technical field of scandium resource recovery, in particular to a method for recovering scandium from a cobalt nickel hydroxide intermediate product. The method for recovering scandium from the cobalt-nickel hydroxide intermediate product comprises the following steps: S1, leaching the cobalt-nickel hydroxide intermediate product, a reducing agent and a sulfuric acid solution to obtain a leachate; s2, carrying out scandium precipitation treatment on the leachate and a precipitant to obtain a first scandium enrichment and a crude nickel sulfate solution; dissolving the first scandium enrichment in sulfuric acid to obtain a scandium sulfate solution; s3, the scandium sulfate solution and a precipitant are subjected to precipitation double salt treatment, and a second scandium enriched product is obtained; calcining the second scandium enrichment to obtain a third scandium enrichment; s4, dissolving the third scandium concentrate with hydrochloric acid to obtain a scandium chloride solution; the scandium chloride solution is subjected to scandium precipitation treatment through oxalic acid to obtain scandium-containing precipitates; and calcining the scandium-containing precipitate to obtain scandium oxide. According to the method, the loss rate of cobalt, nickel and manganese is low, high-purity scandium oxide can be recycled, an extracting agent does not need to be used, safety and environment friendliness are achieved, and meanwhile the high scandium recycling rate is guaranteed.

The invention belongs to the technical field of magnetic functional materials, and particularly relates to an amorphous nanocrystalline strip and a preparation method thereof. The amorphous nanocrystalline strip is prepared from the following raw materials in percentage by mass: 5.6 to 6.5 weight percent of Nb, 9.5 to 10.5 weight percent of Si, 1 to 2 weight percent of B, 0.5 to 1 weight percent of Cu, 0.1 to 0.2 weight percent of Co, 0.05 to 0.1 weight percent of Zr, 0.4 to 1.5 weight percent of rare earth element, 0.5 to 1.0 weight percent of high-entropy oxide and the balance of Fe; the high-entropy oxide is prepared by the following preparation process: adding ferric chloride, cobalt chloride, nickel chloride, manganese chloride and scandium chloride into diethylene glycol, and heating, stirring, centrifuging, washing, drying and calcining under a closed condition to obtain the high-entropy oxide. The amorphous nanocrystalline strip prepared by the preparation method disclosed by the invention is relatively high in magnetic conductivity and relatively small in coercive force, and has relatively high stability in a temperature range of-40 DEG C to + 150 DEG C.

To provide a method for manufacturing a scandium-containing alloy containing at least one metal selected from aluminum or magnesium, by reducing a scandium compound containing at least one selected from the group consisting of scandium oxide, scandium fluoride, and scandium chloride, in a way that is inexpensive, safe, environmentally friendly, and energy-efficient.SOLUTION: A method according to the present disclosure for manufacturing a scandium-containing alloy includes: a preparation step of preparing a composite powder including a scandium compound powder comprising at least one selected from the group consisting of scandium oxide, scandium fluoride, and scandium chloride, and a metal powder comprising at least one of aluminum and magnesium, or both aluminum and magnesium; and a heating step of heating the composite powder at 500°C or higher in a vacuum atmosphere or an inert gas atmosphere.SELECTED DRAWING: Figure 4

The invention provides an anhydrous scandium chloride preparation device which comprises a vacuum tube furnace tube which is divided into a heating reaction zone and an extended condensation zone from left to right; the extended condensation area is further divided into a water absorption drying area and a dust collection area, gas firstly passes through the water absorption drying area, and due to the fact that the water absorption drying area is close to the heating reaction area, ammonium chloride cannot be condensed and only absorbs water; after passing through the water absorption drying area, the gas enters the dust collection area, and in the dust collection area, ammonium chloride in the gas can be condensed into powder which is intercepted and collected in the dust collection area by a filter. Besides, the cooling coil is wound on the periphery of the dust collecting area, so that the temperature of the area can be reduced, the ammonium chloride can be cooled and collected to the maximum extent, and equipment failure caused by the fact that ammonium chloride dust enters a vacuum system is avoided.

The invention provides a preparation method of ultra-dry anhydrous scandium chloride, which comprises the following steps: S1, mixing a water-containing scandium chloride raw material with ammonium chloride, and pre-dehydrating to obtain crude anhydrous ScCl3; s2, the coarse anhydrous scandium chloride is placed in a vacuum condition for gradient heating, then distillation purification is conducted, and ultra-dry anhydrous scandium chloride with the absolute purity larger than or equal to 99.99% is obtained; the step S2 is carried out in a reaction kettle, a quartz pore plate is placed above the raw materials in the reaction kettle, and a plurality of adsorption materials are placed above the quartz pore plate. The total amount of ultra-dry anhydrous scandium chloride rare earth prepared by the method reaches 31.59%, the total amount of water-soluble rare earth reaches 31.34%, the water content is less than or equal to 1ppm, the oxygen content is less than or equal to 50ppm, and the single yield reaches 94%.

The invention relates to a method for purifying and preparing 3N5 high-purity scandium oxide by a synergistic extraction system. The method comprises the following steps: regulating and controlling the acidity of scandium chloride enriched liquid to obtain scandium chloride feed liquid; performing counter-current extraction on the scandium chloride feed liquid by adopting an extracting agent solution to obtain a scandium-containing organic phase; wherein the extracting agent is a mixture of P507 and CA100; washing and removing impurities from the scandium-containing organic phase to obtain a washed organic phase; performing liquid-liquid reverse extraction on the washing organic phase to obtain scandium-containing reverse extraction liquid; precipitating the scandium-containing strip liquor through oxalic acid to obtain scandium oxalate; and roasting scandium oxalate to obtain 3N5 high-purity scandium oxide. According to the method, the pH value of the scandium chloride feed liquid is controlled through acidity regulation and control, and the scandium-containing organic phase is obtained through synergistic extraction of the extraction agents P507 and CA100; the scandium-containing strip liquor is subjected to oxalic acid precipitation and roasting to obtain the 3N5 (99.95% or above) high-purity scandium oxide, and the method is easy to operate and convenient for industrial application.

A preparation method of a semi-metallic antimony-doped high-specific-surface-area carbon-supported scandium monatomic solid hydrogen storage material comprises the following steps: fully mixing Sb2O4 and porous carbon, heating to 900 DEG C for calcination under the protection of nitrogen atmosphere, then cooling to room temperature under the protection of nitrogen atmosphere to obtain an antimony-doped high-specific-surface-area carbon material, adding deionized water, mixing and fully stirring, and carrying out vacuum drying to obtain the scandium monatomic solid hydrogen storage material supported by semi-metallic antimony-doped high-specific-surface-area carbon. The antimony-doped high-specific-surface-area carbon material dispersion liquid is obtained; and adding the antimony-doped high-specific-surface-area carbon material dispersion liquid into a scandium chloride solution while stirring, then adding deionized water to obtain a semi-metal antimony-doped carbon-supported scandium monatomic precursor liquid, standing at room temperature, removing supernate, retaining precipitate, and carrying out high-temperature pyrolysis to obtain the semi-metal antimony-doped high-specific-surface-area carbon-supported scandium monatomic solid hydrogen storage material. The method has the advantages that the process is simple, and high-efficiency hydrogen adsorption and rapid dynamic response are realized by utilizing the structural advantages of the bimetallic atoms and the high-specific-surface-area carbon material.

This invention belongs to the field of magnetic functional materials technology, specifically relating to an amorphous nanocrystalline ribbon and its preparation method. The amorphous nanocrystalline ribbon is composed of the following raw materials in the indicated mass percentages: Nb 5.6-6.5 wt%, Si 9.5-10.5 wt%, B 1-2 wt%, Cu 0.5-1 wt%, Co 0.1-0.2 wt%, Zr 0.05-0.1 wt%, rare earth elements 0.4-1.5 wt%, high-entropy oxide 0.5-1.0 wt%, with the balance being Fe. The high-entropy oxide is prepared by adding ferric chloride, cobalt chloride, nickel chloride, manganese chloride, and scandium chloride to diethylene glycol, heating and stirring under sealed conditions, followed by centrifugation, washing, drying, and calcination to obtain the high-entropy oxide. The amorphous nanocrystalline ribbon prepared by this invention exhibits high magnetic permeability, low coercivity, and high stability within the temperature range of -40℃ to +150℃.

The invention discloses a scandium-containing aluminum alloy additive and a preparation method and application thereof.The scandium-containing aluminum alloy additive comprises scandium salt, sodium fluoride, dissolution promoting salt and an exothermic agent, the exothermic agent, the scandium salt, the sodium fluoride and the dissolution promoting salt are dried, prepared, mixed and pressed into blocks, and the scandium-containing aluminum alloy additive is obtained. The scandium agent salt is one of scandium fluoride, scandium chloride and scandium oxide, the dissolution promoting salt comprises one of potassium chloride, sodium chloride, potassium fluoride, calcium chloride and calcium fluoride, and the weight ratio of the heat generating agent to the scandium-containing aluminum alloy additive is larger than or equal to 30%. The scandium-containing aluminum alloy additive prepared through the method is applied to the aluminum alloy casting industry, the scandium-containing aluminum alloy can be prepared through the product at the low aluminum ingot melting temperature of about 760 DEG C, energy consumption is reduced, and the actual yield of scandium can be larger than or equal to 99.0%.

The invention relates to a coarse scandium oxide purification method which comprises the following steps: dissolving coarse scandium oxide by using a first acid solution to obtain a scandium chloride solution; mixing a first precipitant with the scandium chloride solution, and carrying out solid-liquid separation to obtain a first scandium-containing precipitate; dissolving the first scandium-containing precipitate by using a second acid solution to obtain a scandium-containing material solution; extracting the scandium-containing feed liquid by using an organic composite extracting agent to obtain a loaded organic phase; washing the loaded organic phase by using a third acid solution, and then carrying out reverse extraction by using a reverse extraction agent to obtain a reverse extraction solution; the organic composite extracting agent is a mixture of C572, N1923 and sulfonated kerosene; mixing a second precipitant with the strip liquor, precipitating scandium, and performing solid-liquid separation to obtain scandium-containing precipitate; and calcining the scandium-containing precipitate to obtain scandium oxide. The organic composite extracting agent used in the method has high selectivity on scandium, and short-process deep impurity removal can be realized through one-step extraction, so that the purity of the finally obtained scandium oxide is 99.99 wt% or above.

A preparation method of a three-dimensional porous carbon loaded transition metal monatomic scandium solid hydrogen storage material comprises the following steps: dispersing porous carbon powder in deionized water to obtain a porous carbon material dispersion liquid; the preparation method comprises the following steps: dissolving ScCl3.H2O in deionized water to obtain a scandium chloride dispersion liquid; mixing and uniformly stirring the porous carbon material dispersion liquid and the scandium chloride dispersion liquid to obtain a porous carbon material-scandium chloride precursor dispersion liquid, standing, then carrying out centrifugal treatment, reserving a filter cake to obtain a porous carbon material-scandium chloride precursor material, drying in a vacuum drying oven, then putting in a tubular furnace, and carrying out sintering in an argon atmosphere to obtain the porous carbon material-scandium chloride composite material. And heating to 200 DEG C, calcining for 2 hours, and cooling to room temperature to obtain the three-dimensional porous carbon loaded transition metal monatomic scandium solid hydrogen storage material. The method has the advantages of simple process, mild reaction conditions, capability of realizing loading without high-temperature pyrolysis, good dispersity and stable material performance, and has high energy density and good hydrogen storage reversibility when being used as a solid hydrogen storage material.