62results about "Arsenic compounds" patented technology

The invention discloses equipment and a method for preparing a glass clarifying agent from arsenic trioxide, and belongs to the field of glass clarifying agents. A device for preparing a glass clarifying agent through arsenic trioxide comprises a supporting ring frame, a feeding assembly is fixedly installed on one side of the upper portion of the supporting ring frame, a motor is fixedly installed in the middle of the supporting ring frame, a linkage transmission assembly is installed on the lower portion of the supporting ring frame, and a stirring paddle used for ore dosing treatment is fixedly installed on the lower portion of the linkage transmission assembly. The stirring paddle comprises a second branch stirring paddle, the second branch stirring paddle comprises a stirring shaft used for conveying materials, a sliding plate is installed in the stirring shaft in a sliding mode through a spring, and a dredging rod used for dredging the stirring shaft is fixedly connected to the outer portion of the sliding plate; the sliding plate in the stirring shaft is matched with the dredging rod, self-inspection dredging is achieved through centrifugal force, and the blocking problem caused by accumulation of sediments such as sulfate and calcium sulfate is solved.

The invention discloses a method and a device for deeply purifying an arsenic solution and preparing high-purity arsenic oxide. The method comprises the following steps: oxidizing antimony impurities in an arsenic solution, precipitating, deeply removing, adding a reducing agent to reduce pentavalent arsenic in the solution into trivalent arsenic, decomposing, evaporating, cooling and crystallizing to obtain the high-purity arsenic trioxide. Wherein oxidation precipitation is carried out in a purification tank, reduction is carried out in a reduction tank, the purification tank and the reduction tank are located in the same box body and are separated by a filter screen and a partition plate in the middle, precipitated arsenic antimonate generated after purification in the purification tank is intercepted through the filter screen, and filtrate enters the reduction tank; during reaction, the partition plate is started for use to prevent the solution from flowing. The filtrate enters a reduction tank, reducing agents such as sulfur dioxide are introduced, pentavalent arsenic in the solution is further reduced to form trivalent arsenic, and a high-purity arsenic trioxide product (As2O3 is larger than or equal to 99.5%, and Sb is smaller than or equal to 0.05%) is prepared.

Provided are β-cyc-assisted synthesis of an In-V group quantum dot, and a synthesis method therefor and the use thereof. The method for β-cyc-assisted synthesis of an In-V group quantum dot comprises: preparing a β-cyc-containing precursor solution of an In source and a V group element source, and subjecting it to a hydrothermal reaction; extracting a stock solution after the hydrothermal reaction by using an organic solvent; removing β-cyc from the stock solution, washing same with water and then extracting same; and heating and concentrating same to obtain a high-concentration In-V group quantum dot solution. With regard to the β-cyc-assisted synthesis of an In-V group quantum dot, the In-V group quantum dot synthesized with the assistance of β-cyc is prepared by using the method for β-cyc-assisted synthesis of an In-V group quantum dot. The use of β-cyc-assisted synthesis of an In-V group quantum dot is the use of the β-cyc-assisted synthesis of an In-V group quantum dot in the field of photovoltaics, and the field of photovoltaics comprises solar cells, photoelectrochemical hydrogen production and photoelectric detectors. Compared with traditional synthesis methods, this synthesis method has the advantages of green and environmentally friendly raw materials, a simple and safe process, a simple and convenient device, efficient and economic synthesis, and being low cost.

The utility model relates to an arsenic sulfide slag treatment system which comprises an oxygen pressure leaching unit, a first solid-liquid separation unit, a first reaction unit, a second solid-liquid separation unit, a second reaction unit and a third solid-liquid separation unit which are communicated in sequence, a discharge hole of the third solid-liquid separation unit is communicated with the first reaction unit. According to the treatment system disclosed by the utility model, the arsenic sulfide slag can be treated in a more efficient and energy-saving manner, and harmless and resourceful treatment of the arsenic sulfide slag is realized.

The application provides a preparation method and device of high-purity zinc arsenide by multiphase reduction-melt alloying, and belongs to the technical field of inorganic compound synthesis. The method uses arsenic trichloride as an arsenic source, volatilizes the arsenic trichloride by precise temperature control, and transports AsCl3 vapor to a reactor containing high-purity liquid zinc by using high-purity inert gas as a carrier gas; at a set reaction temperature, the liquid zinc reduces the AsCl3 gas phase to generate elemental arsenic, and the elemental arsenic immediately reacts with zinc to generate zinc arsenide Zn3As2 in situ; the by-product zinc chloride ZnCl2 escapes in a gaseous form and is collected by a condensation system, and the zinc arsenide is suspended on the surface of the zinc melt due to the lower density than the liquid zinc, so that continuous or batch separation and collection can be realized. The application has the advantages of simple process, high reaction efficiency and high product purity, avoids problems such as uneven components and introduction of impurities in the traditional solid-phase reaction method, and is suitable for large-scale production of semiconductor-grade zinc arsenide materials.

A method of preparing a Group III-V nanocrystalline composition, the method comprising forming a first mixture comprising a first indium-containing compound and / or a first gallium-containing compound, a first ligand, and a first solvent, adding to the first mixture at least one compound comprising a nitrogen group element, heating the first mixture to a growth temperature in the range of 200 DEG C to 350 DEG C; and adding an oxide remover and a composition comprising Group III-V clusters to the first mixture at a growth temperature for a total growth time of at least 6 hours to provide the Group III-V nanocrystalline composition. The invention also provides cubic octahedral III-V group nanocrystals, which can be formed by the method of the invention.

The present invention relates to aliovalently substituted argyrodite-type solid electrolyte solid electrolytes. These solid electrolytes display and increased ionic conductivity.

The invention discloses a sulfur-arsenic-strontium-sodium compound and a sulfur-arsenic-strontium-sodium nonlinear optical crystal as well as a preparation method and application thereof. The chemical formula of the sulfur-arsenic-strontium-sodium nonlinear optical crystal is Na4SrAs2S8, the sulfur-arsenic-strontium-sodium nonlinear optical crystal is of a non-centrosymmetric structure and belongs to a tetragonal system, and a space group is that cell parameters are alpha = beta = gamma = 90 degrees, Z = 2 and V = 701.57 (5). The sulfur-arsenic-strontium-sodium nonlinear optical crystal provided by the invention has a relatively large nonlinear optical coefficient and relatively wide transmission wave band and band gap. Meanwhile, the crystal meets the same-component melting characteristic, is easy to grow, cut, grind, polish and preserve, is stable in air, is not easy to deliquesce and is insoluble in water, so that the crystal is expected to become a new-generation novel middle-infrared band nonlinear optical material with excellent comprehensive performance, and can be effectively applied to a wide-spectrum-range tunable laser system.

The invention discloses a rectifying tower and a process for producing ultra-pure arsine, and relates to the technical field of rectification processing, the rectifying tower comprises a rectifying assembly and a homogenizing assembly, the rectifying assembly comprises a tower body, a filler part is fixed in the tower body, an air inlet valve is fixed at the bottom of an outer ring of the tower body, and a liquid inlet valve is fixed at the top of the outer ring of the tower body; the homogenizing assembly is arranged in the tower body and comprises a liquid distribution part mounted in the tower body and a fixing frame fixed in the tower body, a drainage shell is embedded in the fixing frame, a vertical rod slides on the fixing frame, and a collecting frame is arranged at the top of the fixing frame. According to the present invention, with the arrangement of the homogenizing assembly, the flow dividing operation can be performed according to the falling amount of the liquid phase when the liquid phase is increased so as to improve the uniform distribution treatment efficiency, change the space of the gas phase distribution point, avoid the flooding phenomenon, make the liquid phase and the gas phase achieve the good countercurrent contact between the filler, and ensure the overall rectification treatment efficiency.

The invention discloses a method and device for preparing high-purity antimony trioxide, according to the preparation method of the high-purity antimony trioxide, a micro-nano bubble multi-blowing method is combined with a graded filtration method, the arsenic content can be reduced to 0.1 ppm or below through treatment of conventional reagents such as hydrogen sulfide and ammonia water, and the method has extremely high impurity removal and purification efficiency; the high-purity antimony trioxide can be efficiently obtained, and a new choice is provided for industrial application.

The invention relates to the technical field of wet-process phosphoric acid purification, and discloses a method for separating and utilizing arsenic in wet-process phosphoric acid, which comprises the following steps of: clarifying wet-process phosphoric acid, and feeding supernate into an arsenic removal reaction tank; preparing an induced crystallization agent and a dearsenification agent, firstly adding the induced crystallization agent into the reaction tank, and then adding the dearsenification agent for reaction to obtain dearsenification phosphoric acid A; then heating and dissolving the phosphoric acid C, and cooling and growing crystals to obtain arsenic-removed phosphoric acid C; filtering to obtain arsenic-removed phosphoric acid and arsenic sulfide precipitate; washing and drying the precipitate to obtain an arsenic sulfide product; according to the method, the induced crystallization agent is combined with the dissolution-recrystallization process, so that separated arsenic sulfide is attached to the induced crystallization agent and grows into large-particle precipitates easy to filter, selective separation of arsenic is realized, and generation of arsenic-containing waste residues is avoided; and meanwhile, the separated arsenic is directly converted into a high-purity arsenic sulfide product, so that resource utilization of the arsenic is realized.

The invention discloses a thiobacillus ferrooxidans domestication strategy which is more efficient compared with an existing strategy, and a novel acidophilic thiobacillus ferrooxidans Dom-BY3 (Acidithiobacillus ferrooxidans Dom-BY3) with the preservation number of CCTCC (China Center for Type Culture Collection) NO: M 20242585 is obtained through domestication and separation of the strategy. Compared with found acidophilic thiobacillus ferrooxidans, the expression level of realgar leaching related genes of the strain is remarkably improved, higher realgar leaching efficiency is achieved, and the leaching effect result is stable. The concentration of arsenic ions and the concentration of iron ions in a realgar microbiological leaching solution obtained by leaching realgar with the acidithiobacillus ferrooxidans Dom-BY3 are higher. In the aspect of drug effect, the realgar microbiological leaching solution not only has an obvious inhibition effect on HePG2 hepatoma cell lines and K562 leukemia cell lines, but also has a poison effect on rat myocardial cells H9C2 weaker than that of realgar microbiological leaching solutions obtained by leaching disclosed strains.

The present invention provides a method for preparing a metal arsenide and its application; the method for preparing the metal arsenide includes: performing a melting reaction on metal arsenic and an active metal in an environment with a vacuum degree of 0.001~1 Pa and a temperature of 750~950 °C to obtain a reaction product; cooling the reaction product to room temperature and pulverizing it under the protection of an inert gas to obtain the metal arsenide. The present invention effectively utilizes metal arsenic resources, significantly reduces arsenic emissions in the industrial process, and promotes environmental protection; by converting low-value metal arsenic and active metals into high-value metal arsenide products, it has a wide range of applications in semiconductor materials and electronic special gases; under vacuum conditions, the present invention significantly reduces the reaction temperature by lowering the triple point of arsenic and active metal reactants, improves the reaction rate, and at the same time, the reaction conditions are easy to control and the operation is simple, thereby reducing the overall preparation cost.

The invention provides a comprehensive recovery method for valuable metals in smelting waste acid, and relates to the technical field of hydrometallurgy. The method comprises the steps that smelting waste acid is heated and then mixed with a sulfur-containing substance, a sulfur-containing compound is introduced, copper and rhenium in the smelting waste acid are selectively separated, and copper-rich rhenium slag and liquid obtained after copper and rhenium precipitation are obtained; the copper-rich rhenium slag is leached, and a leaching solution is obtained; and extracting the leachate to obtain a loaded organic phase and raffinate, carrying out reverse extraction on the loaded organic phase to obtain ammonium rhenate, and carrying out evaporative crystallization on the raffinate to obtain copper sulfate. Compared with the prior art, the precipitation rate of rhenium can be improved, selective separation of copper, rhenium and arsenic in the waste acid is achieved, the production cost of enterprises is reduced, and the economic benefits of the enterprises are improved.

The utility model discloses an efficient arsenic trichloride reduction device, which belongs to the technical field of reduction reaction and comprises a reaction kettle, a gas uniformizing device is mounted in the reaction kettle and comprises a mounting rack, a motor is fixedly mounted at the top of the mounting rack, an output shaft of the motor is connected with an outer gear, and the outer gear is connected with an inner gear. The outer wall of the outer gear is meshed with a gear ring; according to the gas uniformizing device, a motor drives a gear ring to rotate through a gear, so that the gear ring drives a rotating pipe to rotate on the outer wall of an external pipe, a transmission pipe drives a dispersing box to rotate, the dispersing box drives a connecting box to rotate, and then the connecting box drives a spray head to rotate; the nozzle drives the introduced hydrogen to move to form a relatively small gas mass, and the rising speed of the relatively small gas mass is slower than that of a relatively large gas mass, so that the hydrogen is uniformly dispersed in the arsenic trichloride and is fully contacted and reacted with the arsenic trichloride, and the reaction efficiency is improved.

The utility model relates to the technical field of arsine production, and discloses an arsine purification device which comprises a raw material crude arsine gas cylinder and a rectifying tower body, and the raw material crude arsine gas cylinder is communicated with the rectifying tower body through a pipeline matched with an automatic valve. A vacuum system, a helium feeding device and a tail gas treatment device are respectively communicated with a pipeline between the raw material crude arsine gas bottle and the rectifying tower body; the lower part of the rectifying tower body is communicated with a constant-temperature water tank, a cold trap recycling tank and a product arsine collecting tank respectively, the upper part of the rectifying tower body is communicated with a refrigerating unit through a heat exchanger, and the upper part of the rectifying tower body is sequentially communicated with a flow meter and the cold trap recycling tank through a tower plate heat exchanger. According to the utility model, after crude arsine purified by a traditional molecular sieve is rectified, most impurities such as C2 impurities, C3-C5 impurities, S compounds and the like in a product can be removed, so that the requirements of customers are met.

Use of a Bismuth Oxycarbonate Composite Material and Inorganic Compounds for Ultraviolet Radiation Filtration. The present invention relates to the use of a composite material comprising at least a) bismuth oxycarbonate particles of formula (I) (BiO)2-x(CO3), as well as its solvates, such as its hydrates, wherein -0.4 < x < 0.6, the largest average dimension of said particles being less than 400 nm, and b) at least one inorganic compound selected from oxides and / or hydroxides of formula [(M(v) y)p Oz(OH)t]q (H2O)w; for filtering UV-A and / or UV-B rays, preferably UV-B, as well as composite materials, their preparation process, and compositions incorporating them. Figure for the abstract: None

This invention relates to the field of lithium salt synthesis technology for lithium-ion battery electrolytes, specifically a method for synthesizing lithium hexafluoroarsenate. This method uses 40% hydrofluoric acid as the reaction medium, replacing high-cost anhydrous hydrofluoric acid, and adds 0.5-5 wt% fluoride catalyst. It employs a segmented temperature control mode of mixing at -40 to -30°C, aeration at 20 to 30°C, and heat preservation at 40 to 50°C. Combined with a reactor with a built-in annular baffle plate to improve mixing efficiency, the highly toxic exhaust gas is treated by a three-stage tail gas absorption system of anhydrous calcium chloride-20% sodium hydroxide solution-activated carbon. Simultaneously, it achieves resource recovery of fluoride-containing wastewater through lime slurry pretreatment-sulfuric acid regeneration and hydrofluoric acid recycling. This invention features a safe process operation, reduces costs by more than 30%, produces a product purity ≥99.9%, a yield ≥92%, achieves a fluoride resource recovery rate of ≥85% in wastewater, and meets national standards for tail gas emissions. It realizes efficient and green synthesis of lithium hexafluoroarsenate and is suitable for industrial production.

The invention relates to a gradient treatment and multi-metal collaborative recovery process for micro-fine particle coated sulfur concentrate. The gradient treatment and multi-metal collaborative recovery process comprises the following steps: (1) carrying out acidic complexing reinforced desilicication pretreatment; (2) two-stage temperature-controlled and atmosphere-controlled roasting: vulcanizing and volatilizing in a first-stage low-temperature reducing atmosphere to remove arsenic, and pore-forming and desulfurizing in a second-stage medium-temperature oxidizing atmosphere; (3) selectively extracting copper by reducing ammonia leaching; and (4) gold and silver are leached in a non-cyanide mode. According to the cascade treatment and multi-metal collaborative recovery process, a complete technical chain from'blocking secondary wrapping from the source 'to'recycling arsenic and sulfur in the process' to'multi-metal cascade recovery 'is constructed, the gold recovery rate and the silver recovery rate are stabilized to be 90% or above and 80% or above respectively, the copper recovery rate reaches 88% or above, and the iron ore concentrate grade is gt; arsenic is smaller than or equal to 0.10%, sulfur is smaller than or equal to 1.0%, and the resource recovery rate gt of arsenic and sulfur is achieved; the comprehensive utilization rate of resources is increased by more than 35%, and comprehensive breakthrough in four dimensions of recovery rate of valuable elements in the sulfur concentrate difficult to treat, product quality, environmental protection benefit and economical efficiency is realized.

The utility model relates to the technical field of high-purity arsenic preparation, and provides a high-purity arsenic sublimation device which comprises a sublimation barrel, a barrel cover, a crucible, a collecting cover and a negative pressure machine, the crucible is arranged at the inner bottom of the sublimation barrel, and a heating sleeve is arranged on the outer wall of the crucible; a threaded bottom is arranged on the lower wall of the barrel cover, a sealing brim is fixedly connected to the outer wall of the sublimation barrel, and the threaded bottom is in threaded connection to the inner wall of the sealing brim; a mounting table is arranged on the inner wall of the sublimation barrel, the collecting cover is arranged above the mounting table, and a spiral pipeline is arranged in the collecting cover. By arranging the collecting cover and the conveying pipe, when arsenic is sublimated, sublimated impurities can be discharged firstly, the phenomenon that when arsenic steam is condensed, the impurities and the arsenic steam are condensed at the same time due to the fact that too many impurities are contained in the barrel, and the purity is reduced is avoided, the crucible is directly heated by the heating sleeve through the semi-embedded arrangement of the communicating pipe crucible, and therefore the purity of the arsenic is improved. And the influence on equipment is avoided.

According to an aspect, a method of preparing quantum dots includes a first operation of preparing a quantum dot seed solution; a second operation of growing a quantum dot by continuously injecting a quantum dot cluster solution into the quantum dot seed solution; a third operation of separating the grown quantum dot and dispersing the quantum dot in a solvent; and a fourth operation of further growing the quantum dot by continuously injecting the quantum dot cluster solution into the dispersed quantum dot.

The present invention provides a method for producing a group lll-V nanocrystal composition, the method comprising forming a first mixture comprising a first indium-containing compound and / or a first gallium-containing compound, a first ligand and a first solvent, adding at least one pnictogen-containing compound to the first mixture, and heating the first mixture to a growth temperature in the range of 200 °C to 350 °C; and adding an oxide removal reagent and a composition comprising group lll-V clusters to the first mixture at the growth temperature over a total growth time of at least 6 hours to provide the group lll-V nanocrystal composition. The present invention also provides cuboctahedral group lll-V nanocrystals, which may be formed by the method of the invention.

The present invention belongs to the field of metallurgical technology, and specifically relates to a method for recovering valuable elements by co-disposing antimony electrodeposition lean liquid and arsenic sulfide slag. The method of the present invention comprises the following steps: S1. Mixing the antimony electrodeposition lean liquid with the arsenic sulfide slag, adjusting the pH value to 9.0-10.0, and reacting to obtain copper sulfide slag and rich liquid; S2. Reacting the rich liquid under aerobic conditions to obtain sodium pyroantimonate and arsenic-rich sulfur liquid; S3. Reacting the arsenic-rich sulfur liquid with sulfur dioxide to obtain sulfur slag and arsenic-rich liquid; S4. Adjusting the pH value of the arsenic-rich liquid to 1.0-3.0 with sulfuric acid, and obtaining sulfur dioxide, arsenic trioxide and low-arsenic liquid after the reaction; S5. Reacting the low-arsenic liquid with hydrogen sulfide, and obtaining arsenic sulfide slag and sodium sulfate solution after the reaction. The present invention combines the chemical properties of the antimony electrodeposition lean liquid and the arsenic sulfide slag, and jointly treats the two, thereby reducing the production cost of separate treatments, and comprehensively and effectively recovering valuable elements such as antimony, sulfur, arsenic, and sodium.

The present invention relates to a detection device for detecting a fire-like phenomenon occurring in a space loaded with or through which a medium flows, comprising a detector comprising a radiation-sensitive detector material which is designed to detect radiation emitted by the fire-like phenomenon. With regard to interference sources, the proposed detection device has improved properties.

The present application relates to copper electrolyte purification waste gas treatment technical field, especially to a kind of high-efficiency environmental protection removal method of arsine in copper electrodeposition tank surface waste gas.The method adds a certain concentration of waste electrolyte into flue gas spray liquor according to certain proportion, promotes arsine in copper electrodeposition tank surface waste gas and copper sulfate in spray liquor to react in spray tower, then the reaction product is clarified and separated in clarifier.Supernatant flows into clean water pool, after supplementing a certain amount of waste electrolyte, sulfuric acid and water, it is pumped into spray tower for recycling.The method effectively utilizes copper element in waste electrolyte, efficiently removes and recycles most of arsine in copper electrodeposition tank surface waste gas, and resources it as a semiconductor material, which not only solves the pollution of arsine to the environment, reduces the environmental protection risk of enterprise, but also greatly improves the economic and environmental protection benefit of enterprise.

The present application relates to the field of secondary battery technology, and in particular to a positive electrode material and preparation method, a positive electrode plate, a secondary battery, a battery module, a battery pack, and an electrical device. The positive electrode material of the present application includes a lithium oxygen-containing compound and a lithium sulfide containing a polyanion, wherein the lithium sulfide containing a polyanion has a chemical formula of LiMS (2‑x) (XO m ) x , wherein 0<x<2, 0<m≤4; M is selected from at least one of Fe, V, Nb, Zr, and Mn, and X is selected from at least one of P, Si, S, As, Mo, W, and B. The present application mixes polyanions with lithium sulfide. Due to the addition of polyanions, the p orbital energy of sulfur ions in lithium sulfide is reduced, the covalency of the compound system is reduced, the hybridization between d orbitals and p orbitals is reduced, and the proportion of d orbitals of transition metals in the compound participating in the redox reaction is increased, thereby improving the discharge platform of the secondary battery material and being able to improve its discharge power at low SOC.

The present example embodiment relates generally to creating a specific nanostructure on a substrate to improve the angle independence of a surface plasmon resonance mode. It may comprise a metamaterial structure comprising nanostructures located in a pattern on or within a substrate. The nanostructures may be paraboloid shaped and periodic.

A method of producing a group III-V nanocrystal composition comprising: (a) forming a mixture of a indium and / or gallium containing compound, a ligand and a non-polar solvent; (b) adding at least one

The utility model relates to a kind of dechlorination device for high-purity arsenic production, including main body mechanism, adsorption mechanism, heat dissipation mechanism, material receiving mechanism, the adsorption mechanism is located inside main body mechanism, the heat dissipation mechanism is located main body mechanism side, the material receiving mechanism is located main body mechanism side, the utility model passes through feed pipe and adds chlorine-containing impurity arsenic raw material to adsorption tank by motor driving heating disc rotation uses centrifugal force and evenly disperses to heating disc on raw material, raw material is heated to 620 DEG C to 650 DEG C by heating disc, ensure that chlorine-containing impurity arsenic raw material completely sublimes, avoid liquid residue, after sublimation, arsenic steam is adsorbed in raw material by five layer MOFs adsorption layer in adsorption tank, after adsorption, arsenic steam is entered into material receiving tank by steam pipeline, while steam pipeline is equipped with condenser pipeline, and arsenic steam is cooled, temperature 100 DEG C to 150 DEG C is condensed as solid high-purity arsenic.

Bismuth oxycarbonate and polymer composite material for ultraviolet radiation filtration. The present invention relates to a composite material comprising at least one bismuth oxycarbonate particle of formula (I) (BiO)2-x(CO3), formula (I) and its solvates such as hydrates, wherein -0.4 < x < 0.6, the largest average dimension of said particles being less than 400 nm; and at least one polymer, their preparation process, as well as cosmetic compositions and uses employing said composite materials. Figure for the abstract: None