418 results about "Zinc sulfide" patented technology

According to the plastic surface deep scene vacuum plating manufacturing process, UV primer is sprayed to the back face of a plastic product, and a mirror surface primer layer is formed; the mirror surface primer layer is placed in vacuum electroplating equipment, vacuumizing is conducted till the vacuum degree is 5 * 10 <-3 > Pa or below, 99.99% of high-purity aluminum materials are subjected to vacuum evaporation, and a mirror surface electroplated aluminum layer is obtained; engraving a required pattern on the mirror surface electroplated aluminum layer by adopting laser engraving equipment; spraying UV finish paint on the surface of the carved pattern to form a protective layer; spraying the UV finish paint on the front surface of the plastic product to form a mirror paint layer on the front surface; placing the front mirror surface paint layer in vacuum electroplating equipment, vacuumizing to below 5 * 10 <-3 > Pa, and carrying out vacuum evaporation on 99.99% high-purity indium material or zinc sulfide to obtain a semi-permeable mirror surface electroplated layer; the electroplated layers on the front and back surfaces mutually reflect to form a deep scene (multi-layer scene) effect; the pattern has a three-dimensional and multi-layer visual effect when viewed from the front side, UV gloss oil is sprayed on the surface of the semi-permeable mirror surface electroplated layer, and the formed surface protective layer is excellent in wear resistance; and the attractiveness and durability of the product are obviously enhanced.

The invention discloses preparation and application of an organic-inorganic interface layer modified zinc negative electrode. The preparation method comprises the following steps: firstly, dispersing organic polymer polylactic acid and zinc sulfide powder into tetrahydrofuran, then coating the surface of zinc foil with the dispersed solution, and drying a solvent at 70 DEG C, so as to prepare the zinc negative electrode modified by an organic-inorganic interface layer. According to the interface layer, zinc ion deposition is regulated and controlled, and the problem of zinc dendrite growth is solved. In addition, the polylactic acid-zinc sulfide composite coating can effectively improve the redox kinetics of zinc ions and improve the coulombic efficiency of the zinc negative electrode. Due to the good ionic conductivity, the interface modification layer can improve diffusion of zinc ions, and the polarization influence caused by the concentration gradient of the zinc ions is relieved. Therefore, the prepared polylactic acid-zinc sulfide composite interface layer modified zinc negative electrode symmetric battery has more excellent cycling stability, the half battery has more stable coulombic efficiency, and the assembled total battery has more prominent capacity retention rate.

The invention relates to the field of photoelectrocatalysis, and provides a preparation method and application of a cerium-based double-layer composite material coated with indium zinc sulfide, and the preparation method comprises the following steps: dispersing Ce (IV)-MOF in DMF and methanol, adding a hydroxyl-containing organic ligand, carrying out room temperature ultrasonic treatment to obtain modified MOF, dispersing the modified MOF in water and glycerin, adding a zinc salt and an indium salt, stirring, adding thioacetamide, stirring, filtering, washing, and drying to obtain the cerium-based double-layer composite material coated with indium zinc sulfide. And heating to obtain the product indium zinc sulfide coated cerium-based double-layer composite material. According to the invention, an ultrasonic-assisted MOF ligand exchange technology is utilized, so that an MOF regular octahedral framework structure is well maintained; the ZnIn2S4 material is compounded through in-situ growth of ZnIn2S4, the compounding synthesis temperature and a solution system are optimized, a ZnIn2S4 double-layer coating structure is obtained, and the yield and dispersity of ZnIn2S4 are improved. And the prepared ZnIn2S4 / MOF composite material has excellent reaction efficiency and stability of photoelectrocatalytic hydrogen production.

The invention discloses a far-infrared high-transmittance composite material, a preparation method thereof and an optical device, and the far-infrared high-transmittance composite material comprises the following components in parts by weight: 70-99 parts of a polymer matrix; 1-30 parts of an anti-reflection auxiliary agent; the polymer matrix is a sulfur-containing polymer prepared by polymerization reaction of a polymeric monomer and sulfur, and the proportion of carbon-carbon unsaturated bonds is less than 3%; the polymeric monomer is selected from at least one of a vinyl monomer, a propenyl monomer, an acrylic acid monomer, a methacrylic acid monomer, an epoxide monomer, a thiopropyl ring monomer, an alkynyl monomer, a butadiene monomer, an isoprene monomer and a norbornene monomer; the anti-reflection auxiliary agent comprises at least one of nano zinc sulfide, nano zinc selenide, nano calcium fluoride, nano magnesium fluoride and nano magnesium oxide. The composite material and the optical device thereof have high far infrared transmittance and good mechanical properties and processability, and can meet the requirements of various far infrared optical fields.

The invention discloses a power-on viscosity-reducing adhesive tape and a preparation method and application thereof, and belongs to the technical field of processing of UV adhesive tapes for batteries, the preparation method comprises the following steps: mixing and stirring an acrylate pressure-sensitive adhesive, a UV prepolymer, composite conductive hydrogel, a curing agent, a photoinitiator, a solvent and a leveling agent to obtain conductive glue; and coating the conductive glue on the upper and lower surfaces of the aluminum foil substrate, drying at 80-100 DEG C for 5-6 minutes to obtain a conductive adhesive layer, and adhering release films on the upper and lower surfaces of the conductive adhesive layer to obtain the electrified viscosity-reducing adhesive tape. The synthesized porous carbon has high porosity, and promotes the manganese-doped nano zinc sulfide to emit light to initiate polymerization, crosslinking and curing of the conductive adhesive layer, so that the conductive adhesive layer loses viscosity; nano-silver particles are formed on the surface of the zinc oxide whisker loaded with the porous carbon, so that the pore structure of the porous carbon is refined, and the heat dissipation performance of the electrified viscosity-reducing adhesive tape is improved.

The invention relates to a dual-waveband medium-long wave infrared optical filter based on a germanium / zinc sulfide asymmetric film system and a preparation method of the dual-waveband medium-long wave infrared optical filter. The dual-waveband medium-long wave infrared optical filter comprises a front film system, a substrate and a back film system, the front film system and the back film system are formed by alternately overlapping germanium layers and zinc sulfide film layers; the average transmittance of the infrared optical filter in the wave band of 3800 nm to 4800 nm and the wave band of 8000 nm to 10000 nm is not lower than 91%. According to the two-waveband medium-long wave infrared optical filter disclosed by the invention, 3800 to 4800 nm amp is realized; according to the infrared filtering window, the light energy of medium waves and long waves of 8000-10000 nm is improved, the luminous flux of other wavebands is well inhibited, the technical problem of the infrared filtering window in some special infrared spectrum detection systems is solved, and a new scheme is provided for infrared application.

The invention relates to a wide-temperature-range stable dual-band infrared optical filter for an extreme environment and a preparation method thereof. The wide-temperature-range stable dual-band infrared optical filter comprises a front film system, a substrate and a back film system, the front film system and the back film system are formed by alternately overlapping germanium layers and zinc sulfide film layers; the drift distance of the central wavelength of the passband of the infrared optical filter is less than 0.05% within the temperature range of-120 DEG C to + 85 DEG C. According to the invention, the internal stress of the film layer is obviously reduced through the optimized film system design, so that the excellent stability of the optical performance in an extreme temperature environment is realized, the technical problem that some special infrared spectrum detection systems work in a wide temperature range is solved, and a reliable solution is provided for high-end aerospace infrared application.

The invention relates to a dressing and smelting combined process for synchronously and efficiently recovering copper and zinc in copper-zinc sulfide ore, which is characterized in that copper-zinc sulfide ore is used as a raw material, and a dressing and smelting combined process flow of bulk flotation-oxygen pressure acid leaching is adopted, so that copper and zinc leaching liquid is obtained, and effective recovery of copper and zinc is realized. The method comprises the following specific steps: crushing and screening the copper-zinc sulfide ore, and grinding an ore sample meeting the granularity to obtain ore pulp; the ore pulp is subjected to sectional bulk flotation of two times of roughing and three times of scavenging under the required flotation concentration; and the obtained copper-zinc bulk concentrate is directly subjected to oxygen pressure acid leaching after being finely ground, and finally a leaching solution containing copper and zinc is obtained. According to the method, the copper and the zinc in the copper-zinc sulfide ore are effectively recycled in a mixed segmented flotation and oxygen pressure leaching mode, the technological process is simple, the reagent consumption is reduced, the copper and zinc dressing and smelting combined recycling rate can reach 86.5% or above, the copper and zinc dressing and smelting combined recycling rate can reach 91.5% or above, and efficient recycling of the copper and the zinc is achieved.

The invention discloses an electrolyte for improving the cycling stability of a zinc-sulfur battery and application of the electrolyte in a photoelectric storage integrated battery. The electrolyte comprises a solvent, an additive and zinc salt, the additive is iodide, and the iodide comprises iodine negative ions and positive ions or polar functional groups. The functional additive is added into the electrolyte, positive ions inhibit dendritic crystals and side reactions of zinc, and iodine negative ions accelerate reversible change between sulfur and zinc sulfide, so that the cycling stability of the zinc-sulfur battery is improved. A zinc-sulfur battery with high specific capacity and long cycle life is integrated with a solar battery, so that the photoelectric storage integrated battery with high overall conversion efficiency, high specific capacity and long cycle life is prepared.

A hydrocarbon gas detection system including a longwave infrared camera, a spectral filter, and a computation unit. The spectral filter is disposed in the light path of the camera sensor. The spectral filter is made of a material selected from the group consisting of calcium fluoride, zinc sulfide, magnesium fluoride, and silicon. The computation unit is arranged to process image data of the longwave infrared camera for the hydrocarbon gas detection.

The invention discloses a hexagonal bismuth phosphate modified indium zinc sulfide (ZIS / HBIP) composite catalyst and a preparation method thereof. The catalyst is applied to photocatalytic synthesis of HO. The indium zinc sulfide (ZIS) nano flower balls in the catalyst are prepared by a hydrothermal method, and then hexagonal bismuth phosphate (HBIP) is loaded on the surface of the ZIS by a room temperature precipitation method to obtain a series of ZIS / HBIP composite catalysts. ZIS and HBIP can effectively improve photo-induced electron-hole separation and transmission, improve the selectivity of direct two-electron oxygen reduction reaction (2eORR) and inhibit HO decomposition. Experimental results show that when the theoretical dosage of HBIP is 0.01 mmol, the prepared ZIS / HBIP 0.01 has the optimal photocatalytic activity, the HO yield within 1 h can reach about 955 [mu] mol.g.h, and efficient synthesis of HO in pure water is achieved.

The invention relates to a dual-band anti-reflection zinc selenide metallized light window and a preparation method thereof, the dual-band anti-reflection zinc selenide metallized light window comprises a front film system, a zinc selenide substrate, a back film system and edge metallized films, the zinc selenide substrate is located between the front film system and the back film system, and the edge metallized films are located at two ends of the zinc selenide substrate; the front film system and the back film system are formed by alternately overlapping zinc sulfide layers and ytterbium fluoride film layers; the edge metallized film is formed by overlapping a chromium film layer, a copper film layer, a nickel film layer and a gold film layer. According to the invention, the two sides of the zinc selenide substrate are respectively provided with an anti-reflection film system structure, so that the light energy of two wave bands of 3500-5000nm and 8000-12000nm is improved; the zinc sulfide and ytterbium fluoride film layer is adopted, so that the stress is lower, and the dual-band anti-reflection optimization effect is better; by improving the edge metallized film stacking structure, the problem that the soft optical material and the metallized film are not firmly combined is solved, and a new scheme is provided for infrared detector welding.

The invention relates to the technical field of photocatalytic materials, and particularly provides a carbon nitride / indium zinc sulfide / polyacid composite material as well as a preparation method and application thereof. The invention aims to solve the problems of high photogenerated charge recombination rate and narrow spectral range when polyacid is used as a photocatalytic hydrogen production catalytic material, and provides a preparation method of a photocatalytic material capable of improving the hydrogen production performance. The method comprises the following steps: taking tubular carbon nitride synthesized by mixing melamine, trithiocyanuric acid and urea according to a certain proportion as a precursor; lamellar indium zinc sulfide is grown on the tubular carbon nitride in situ in a hot reflux mode, and a carbon nitride / indium zinc sulfide heterogeneous material is obtained; and finally, adding the carbon nitride / indium zinc sulfide heterogeneous material into an HCl-Tris buffer solution, carrying out ultrasonic dispersion, adding dopamine hydrochloride as a binder, adding cobalt substituted phosphotungstate Na10 [Co4 (H2O) 2 (alpha-PW9O34)], and stirring at room temperature to obtain the carbon nitride / indium zinc sulfide / polyacid composite material. The preparation of the composite material solves the problems that polyacid is easy to dissolve in water, the spectral response range is narrow, and indium zinc sulfide photo-induced electrons and holes are easy to compound, the separation of photo-induced charges is promoted, and meanwhile, the specific surface area of the material is increased due to the unique tubular lamellar multilevel structure, so that more catalytic active sites can be exposed, and the catalytic activity of the material is improved. A technical route is provided for the development of the high-performance multi-acid-group photocatalyst.

The invention discloses a low-distortion athermalization correctable short-wave infrared optical system and a lens, and belongs to the technical field of optics. According to the system, an optical lens is additionally arranged at the rear end to serve as a correction lens to achieve image correction in an external field environment; passive athermalization under wide-temperature and vacuum conditions is realized through focal power distribution and material matching of each optical lens; all the lenses are set to be spherical surfaces, so that the influence of aspheric surface processing errors on system index precision, processing cost and system installation and adjustment is avoided; the system adopts a positive-negative-positive-negative-negative five-lens focal power configuration. The positive-negative-positive-negative lenses are located at the front end, and the last negative lens is located at the rear end. The five lens materials are zinc sulfide, a chalcogenide material, single crystal barium fluoride, single crystal calcium fluoride and a chalcogenide material in sequence; the correction lens is located at the rear end of the last negative lens. The short-wave infrared optical system can solve the problems that an existing short-wave infrared optical system is large in imaging distortion, or athermalization is not achieved, or image correction under the external field application condition cannot be achieved.

The invention provides a zinc sulfide-porous carbon nanofiber composite membrane, a preparation method thereof, an electrode plate and a lithium ion battery, and relates to the technical field of nanostructure materials and batteries. According to the preparation method of the zinc sulfide-porous carbon nanofiber composite membrane, electrostatic spinning and calcination vulcanization processes are combined, and the zinc sulfide-porous carbon nanofiber composite membrane with a special morphology is prepared. The fiber composite membrane has a unique structure that zinc sulfide is uniformly distributed in the lotus-root-like porous carbon nanofibers, and the composite structure provides a good electron transport network and improves the conductivity of the material; due to the coating and confinement effects of the porous carbon nanofibers on the zinc sulfide, the volume expansion effect of the zinc sulfide in the circulation process can be effectively inhibited, the defects of poor conductivity, large volume expansion and the like of the zinc sulfide are overcome, and the circulation stability of the composite membrane is improved. As the fiber composite membrane has mechanical flexibility and self-supporting property, the fiber composite membrane can be directly used as an electrode plate, and the preparation process of the electrode plate is greatly simplified.

A method for forming a coating on a substrate formed from zinc sulfide (ZnS) is provided. A ZnS film is grown on the substrate with a radio frequency sputtering process and metal dopants are sputtered on the substrate with a high-power impulse magnetron sputtering process. The metal dopants can be molybdenum or tungsten and simultaneously sputtered while growing the ZnS film. The sputtering ionizes the coating where the coating has a sheet resistance that is less than 50 ohm / square and the metal dopants form n-type dopants in the ZnS film. The metal dopants can be formed at a concentration that varies with a thickness of the ZnS film. At a first thickness, the concentration is at a first concentration and at a second thickness greater than the first thickness, the concentration is at a second concentration less than the first concentration.

The invention discloses a preparation method and application of a CuCo2S4 nanotube cluster / Zn3In2S6 nanosheet composite photocatalyst in the field of photocatalytic materials, the catalyst takes a cobalt sulfide copper nanotube cluster as a substrate, an indium zinc sulfide nanosheet layer is loaded on the surface, and a unique composite structure is formed. The preparation method comprises the following steps: preparing a CuCo nanotube cluster precursor through a hydrothermal method, and further preparing the CuCo2S4 nanotube cluster / Zn3In2S6 nanosheet composite photocatalyst through vulcanization and an oil bath method. The preparation method is simple, raw materials are easy to obtain, conditions are mild, control is easy, and the method is suitable for large-scale production. The prepared catalyst has high specific surface area and good dispersibility, also shows high carrier separation efficiency and strong light absorption performance, and can significantly improve the efficiency of photocatalytic decomposition of water to produce hydrogen and the efficiency of heavy metal removal under visible light.

The invention relates to a copper sulfate-free copper-zinc sulfide ore flotation separation method, and relates to the technical field of mineral flotation separation. The method comprises the following steps: obtaining copper-zinc sulfide ore pulp; by taking ethionine ester as a collecting agent and lime as an inhibitor, carrying out copper-zinc bulk flotation on the copper-zinc sulfide ore pulp to obtain copper-zinc bulk concentrate and discardable tailings; zinc sulfate serves as an inhibitor, the copper-zinc bulk concentrate is subjected to regrinding treatment, and copper-zinc bulk concentrate pulp is obtained; copper flotation is conducted on the copper-zinc bulk concentrate pulp, and copper concentrate and copper tailing pulp are obtained; with ethionine ester as a collecting agent, the copper tailing ore pulp is subjected to sphalerite activation under the condition of aeration stirring, and activated sphalerite ore pulp is obtained; and carrying out flotation on the activated sphalerite by using lime as an inhibitor to obtain zinc concentrate. The scheme provided by the invention has the advantages that heavy metal pollution is avoided, the mineral separation cost is reduced, and the process adaptability is high.

According to preparation of the flexible braided fabric display device for X-ray imaging, multi-dimensional, large-area, movable, storable, simple-imaging and low-cost object internal ray imaging is realized. The device comprises a ray imaging fiber braided fabric, a luminous variable-frequency driver, a X ray emission source and a CCD (Charge Coupled Device) image recording instrument, the ray imaging fiber braided fabric is formed by weaving ray luminous fibers; the ray luminescent fiber comprises a central conductive wire electrode, a zinc oxide memory layer, a zinc sulfide luminescent layer, a transparent conductive layer and a protective layer; a light-emitting variable-frequency driver is connected with a ray light-emitting fiber electrode to emit light, and the ray light-emitting fiber memorizes an image generated by rays; the ray imaging fiber braided fabric covers an object, and a multi-angle grayscale image of the internal structure of the object irradiated by X rays is recorded by a CCD (Charge Coupled Device) image to form an unfolded digital image.

The invention discloses a biodegradable composite material, which is prepared from the following raw materials in percentage by weight: 60 to 78 percent of polylactic acid, 20 to 30 percent of flexibilizer, 1 to 10 percent of transparent inorganic matter and 0.1 to 0.5 percent of cellulose. According to the invention, the block polyether amide resin is adopted as the flexibilizer and acts together with the PLA resin, and then the inorganic substance zinc sulfide with high transparency is added, so that the obtained composite material has good tensile toughness and excellent heat resistance. Meanwhile, the transparency and the puncture resistance of the biodegradable composite material film are improved, and the tensile toughness and the heat resistance are obviously improved. While being degradable, the adhesive force is good, the pattern integrity is high, the slitting performance is good, and the holographic hot stamping performance of the alumite film is not affected.

The invention belongs to the technical field of photovoltaic packaging materials, and provides a light anti-reflection packaging adhesive film and a preparation method and application thereof. The light anti-reflection packaging adhesive film is prepared from 100 parts of matrix resin, 1 to 15 parts of light anti-reflection master batch, 0.4 to 1.5 parts of cross-linking agent, 0.8 to 3.0 parts of assistant cross-linking agent and 0.3 to 1.0 part of silane coupling agent, the light anti-reflection master batch comprises 100 parts of matrix resin, 0.5-10 parts of an anti-reflection nano material and 0.5-10 parts of a surfactant; the matrix resin is at least one of EVA (ethylene vinyl acetate) resin, POE (polyolefin elastomer) resin and PVB (polyvinyl butyral) resin; the anti-reflection nanometer material is a porous nanometer material, the porosity is 20-70%, the aperture is 2-35 nm, and the anti-reflection nanometer material is selected from one or more of porous nanometer silicon dioxide, porous silicon dioxide loaded zinc oxide, zinc sulfide, zinc oxide, titanium dioxide, zirconium oxide, aluminum oxide and organic silicon resin microspheres. According to the light anti-reflection packaging adhesive film, the light transmittance and the assembly efficiency can be further improved.

According to the beneficiation method for lead-zinc separation of the lead-zinc sulfide ore containing the extremely low copper sulfide content, the ore pulp is pretreated through the heavy metal ion shielding agent, the zinc blende activity removing agent is added and stirred, and finally the collecting agent is added for collecting the lead ore, the technology is environmentally friendly, and applicability is good. When the lead-zinc sulfide ore with the copper grade not larger than 0.05% is treated, the lead grade of the lead concentrate is 60% or above, the zinc grade is not larger than 6%, the lead recovery rate is 90% or above, the zinc grade of the zinc concentrate is 42% or above, and the zinc recovery rate is 90% or above.

The invention relates to a color separation sheet capable of reflecting visible light to short wave infrared and transmitting wide spectrum infrared and a manufacturing method thereof, the color separation sheet takes a germanium flat sheet as a substrate, a color separation film system adopts a film system structure of a long wave pass optical filter, and germanium, zinc sulfide and fluoride are used as high and low refractive index materials of different reflecting film stacks. A color separation film is designed on the front surface of the substrate, broadband high reflection is achieved through combination of different reflecting film stacks, and transmission passband ripples are reduced by optimizing a matching layer. A wide-spectrum antireflection film is designed on the rear surface of the substrate, high transmissivity of a transmission channel is obtained, residual reflection is reduced, and stray light is eliminated. In the preparation process of the color separation film, proper deposition rate, substrate temperature, local film layer ion auxiliary deposition and other processes are adopted, thin film absorption is reduced, and meanwhile the environmental reliability of the color separation film is improved. According to actually measured reflectivity and transmissivity curves, the color separation film is highly reflective in the wave band of 0.4-1.7 microns and highly transmissive in the short-wave infrared band of 2.1-2.4 microns and the medium-long wave infrared band of 3.5-14 microns, and is suitable for spectrum light splitting of a visible-to-infrared multi-channel remote sensing system.

The invention relates to a large-size wide-spectrum infrared color separation film with controllable surface precision and a manufacturing method thereof, the color separation film takes a silicon plain film as a substrate, a color separation film is designed on a light incident surface of the silicon substrate, germanium and zinc sulfide are used as high and low refractive index materials of a reflecting film stack, ytterbium fluoride is added in a matching layer, the film thickness ratio is regulated and controlled, and a thin film deposition process is optimized. The surface type change caused by the film layer is reduced; a thickness compensation film layer is added when the antireflection film is designed on the light transmission surface of the silicon substrate, so that the stress of the antireflection film and the stress of the color separation film are mutually counteracted, and the surface type is controlled. Appropriate substrate temperature, deposition rate and local film layer ion auxiliary deposition are adopted in the preparation of the color separation film, and the environmental reliability is good. The prepared large-size color separation sheet is controllable in surface type, the surface type precision RMS of the color separation surface is 0.028 lambda, the surface type precision RMS of the anti-reflection surface is 0.042 lambda, the large-size color separation sheet can highly reflect a broadband of 2-3.95 microns and highly transmit a broadband of 4.2-5.1 microns, and the large-size color separation sheet can be used for spectrum color separation of a large-view-field infrared optical system.

This invention discloses an S-type heterojunction photocatalyst composed of sulfur-defect-containing indium zinc sulfide and tungsten oxide, its preparation method, and its application. Specifically, this invention involves preparing WO3 nanosheets via a hydrothermal method, then loading them onto the surface of Zn3In2S6 using a solvothermal method, followed by introducing sulfur defects through phototreatment to obtain the S-type heterojunction photocatalyst WO3 / V. S -Zn3In2S6. The S-type heterojunction photocatalyst WO3 / V obtained in this invention. S -Zn3In2S6 exhibits excellent activity, enhanced CH4 selectivity, and good stability in the photocatalytic CO2 reduction reaction. Its preparation method is simple and easy, and it has good application prospects in the photocatalytic CO2 reduction reaction.

Magnetic particles with a highly reflective protective membrane (300), comprising: a magnetic core (100), a shell (200) formed on the outer surface of the magnetic core (100), having a multi-layer structure and comprising a first shell (210) made of a dielectric material, and a second shell (220) made of metallic material, formed on the outer surface of the first shell (210) and being a multi-layer membrane in which two or more layers (221, 222, 223) of mutually different metallic materials are stacked on top of each other, and a highly reflective protective membrane (300) which is in contact with the second shell (220) and is formed on the outer surface of the shell (200), wherein the highly reflective protective membrane (300) comprises a multi-layer structure comprising a low refractive index membrane (310) formed on the outer surface of the shell (200) and having an optical thickness between 0.15 to 0.35 of the wavelength, and a high refractive index membrane (320) formed on the outer surface of the low refractive index membrane (310) and having an optical thickness between 0.15 to 0.35 of the wavelength, the dielectric material is one or more materials selected from a group comprising titanium dioxide, aluminum oxide, calcium carbonate, zirconium oxide, magnesium fluoride, zinc oxide and zinc sulfide, the metallic material is one or more materials selected from a group comprising copper, nickel, gold, platinum, silver, aluminum and chromium, the low refractive index membrane (310) consists of one or more materials selected from a group comprising silicon dioxide, magnesium fluoride, polystyrene, polymethyl methacrylate, polystyrene-co-butadiene, vanadium pentoxide, cadmium oxide, polyisobutylene and polyethylene, and the high refractive index membrane (320) consists of one or more materials selected from a group comprising titanium dioxide, aluminum oxide, zinc oxide, zirconium oxide and chromium oxide.

The invention discloses a flotation system for lead-zinc sulfide ore containing pyrrhotite, a technological method of the flotation system and a water treatment method, and belongs to the field of flotation and water treatment. Rough concentrate of the lead-sulfur mixed flotation tank is connected with the lead-sulfur concentration subsystem, tailings are connected with the lead-sulfur scavenging subsystem, lead-sulfur mixed flotation concentrate is connected with the thickener, overflow is connected with the buffer water pool, and underflow is connected with the lead-sulfur separation flotation tank. Lead rough concentrate is connected with the lead concentration subsystem, lead concentrate is connected with the filter press, and filtrate is connected with the buffer water pool. Roughing tailings are connected with a lead scavenging subsystem, sulfur concentrate is connected with a filter press, and filtrate is connected with a buffer water tank. Lead-sulfur mixed flotation tailings are connected with a zinc flotation roughing tank, zinc rough concentrate is connected with a zinc concentration subsystem, zinc concentrate is connected with a zinc concentrate filter press, and filtrate is connected with a buffer water pool. Roughing tailings are connected with the zinc scavenging subsystem and the sedimentation tank, and supernate is connected with the buffer water tank. The buffer pool is connected with ore grinding equipment. The problem that the pyrrhotite is difficult to inhibit after being activated in the zinc blende activation process is solved, the grade and the recovery rate of the zinc concentrate are improved, and the water treatment process is simplified.

The application discloses application of a combined inhibitor in associated gold-silver-lead-zinc sulfide ore flotation separation, wherein the combined inhibitor is a combination of zinc sulfate and methionine, and the mass ratio of the two combined is 2:1; the combined inhibitor is used to realize associated gold-silver-low-copper-lead-zinc polymetallic sulfide ore flotation separation in a low-alkali environment, has a good separation effect, high concentrate grade, effectively reduces the zinc content of lead concentrate, improves the gold and silver recovery rate in the lead concentrate, and has important significance for improving the quality and efficiency of associated gold-silver-low-copper-lead-zinc polymetallic sulfide ore flotation separation. In addition, the methionine in the combined inhibitor is a small-molecule organic substance, is non-toxic and non-polluting, and is easy to degrade, thereby avoiding the problems of traditional inhibitors, such as toxicity, environmental unfriendliness and human body unfriendliness. The combined inhibitor has small dosage, stable effect, and good process application prospect.

The application discloses a beneficiation method for complexly-embedded high-sulfur-content lead-zinc sulfide ore, which comprises one-stage rough separation, three-stage cleaning and three-stage scavenging; a zinc flotation operation comprises one-stage rough separation, three-stage cleaning and three-stage scavenging; a sulfur flotation operation comprises one-stage rough separation, one-stage cleaning and one-stage scavenging; a sulfur concentrate dezincing operation comprises one-stage rough separation, one-stage cleaning and one-stage scavenging, calcium oxide is added in the one-stage cleaning process, a zinc collecting agent is added in the one-stage scavenging process, and tailings after the one-stage cleaning and concentrate after the one-stage scavenging are returned to the one-stage rough separation of the sulfur concentrate dezincing operation. The column machine is combined to improve the recovery rate of useful minerals, the flotation column is used for scavenging to improve the recovery rate of fine particles, the sulfur concentrate is subjected to the dezincing operation, and the dezincing product is returned to the zinc rough separation operation, so that the recovery rate of zinc minerals is improved, and through the column machine combined with the middling regrinding mode, the recovery rates of lead and zinc in the complexly-embedded high-sulfur-content lead-zinc sulfide ore are improved.

The present invention discloses a method for removing impurities from waste acid and fully recycling the waste acid. The method comprises the following steps: introducing hydrogen sulfide into the waste acid for a sulfidation reaction, removing arsenic sulfide and mercuric sulfide precipitates formed during the reaction; continuing to introduce hydrogen sulfide for a step-by-step sulfidation reaction, adding an iron-containing substance to adjust the reaction pH and ORP, and recovering the copper, lead, and zinc sulfide slag precipitates formed during the reaction in a step-by-step manner; adding an iron-containing substance for a neutralization reaction, controlling the pH and ORP, promoting the reaction between iron ions and arsenate, and removing the ferric arsenate precipitate formed during the reaction; adding an adsorbent for an adsorption reaction, and removing fluorine-containing and thallium-containing components by adsorption; introducing an oxidant for an oxidative hydrolysis reaction, controlling the degree of hydrolysis, and preparing polyferric sulfate. The present invention utilizes the iron-containing substance to remove impurities from waste acid, thereby achieving deep impurity removal and full resource utilization of waste acid.