191 results about "Zinc sulphide" patented technology

The invention provides a composite reagent system and a chalcopyrite and sphalerite collecting method, and belongs to the technical field of mineral processing. The composite reagent system comprises a histidine derived functional group collecting agent and a black agent, and the histidine derived functional group collecting agent (containing a total sulfur ester group, a sulfydryl functional group and a side chain imidazole ring) serves as a core and is compounded with the black agent according to a specific proportion to form a target combination-synergistic interaction flotation mechanism. The histidine derivative collecting agent derives high-activity functional groups under the alkaline condition, and after sulfydryl is dissociated, stable chemical bonds are formed by the dissociated sulfydryl and metal ions on the surfaces of the chalcopyrite and the zinc sulfide. The black powder serves as an auxiliary collecting agent, and the collecting capacity of fine-grain or low-activity sulfide minerals is enhanced through chemical adsorption of dithiophosphate radicals and metal ions on the surfaces of the chalcopyrite and the sphalerite. After the two components are compounded, the selective enrichment efficiency of copper-zinc minerals in the flotation process is remarkably improved.

The invention provides the preparation method of the efficient photocatalyst which is simple and convenient, does not contain noble metals or toxic metals and does not need a cocatalyst. In the invention, a strategy for synergistically improving the catalytic performance by regulating and controlling sulfur vacancies and doping copper ions is provided, zinc indium sulfide (ZIS) is selected as a substrate material, the content of sulfur atoms is increased in the synthesis process through a solvothermal method to introduce the vacancies, and Cu (NO) is synchronously added to introduce Cu, so that the catalytic performance is improved. The Cin-VZIS catalyst is successfully prepared (n is a doping proportion relative to Zn). A TEOA aqueous solution is used as a sacrificial agent to carry out photocatalytic hydrogen production reaction, the synergistic effect of the two modification modes can significantly improve the performance of the catalyst, and when the copper doping ratio is 1.5%, the catalytic activity reaches the highest and is 1.799 mmol.g.h, which is 7.5 times of that of an original ZIS catalyst. The prepared catalyst is high in activity and good in stability, and a new way is provided for developing efficient and stable solar hydrogen production materials.

The invention discloses a zinc sulfide nano material with chiral morphology and a preparation method thereof, and the method comprises the following steps: 1, adding an alkali source solution into a chiral ligand aqueous solution, and carrying out ultrasonic treatment at 30 DEG C to obtain a chiral ligand reaction precursor solution; 2, adding a zinc salt solution into the chiral ligand reaction precursor solution, and stirring to obtain a mixed turbid solution; 3, placing the mixed turbid liquid in a water bath kettle at the temperature of 15-50 DEG C, keeping the temperature for 3-30 minutes, separating out precipitates, washing and freeze-drying to obtain a zinc-chiral ligand complex nano material; and 4, transferring the zinc-chiral ligand complex nano-material to a quartz porcelain boat, putting the quartz porcelain boat into a tubular furnace, heating from room temperature to 300-700 DEG C at a heating rate of 1-5 DEG C / min in a protective atmosphere, calcining for 1-12 hours, and cooling to obtain the zinc sulfide nano-material with chiral morphology. The preparation method is simple, easy to control, low in cost and high in universality, and the prepared chiral zinc sulfide nano material has good crystallinity and stability.

The invention discloses a multi-stage oxygen pressure leaching process for coarse-grained zinc sulfide concentrate, and belongs to the technical field of hydrometallurgy. The process comprises the following steps: carrying out first-stage high-temperature oxygen pressure leaching on 80-160-mesh coarse-grained zinc sulfide concentrate; the first-section leaching residues are subjected to flotation separation, and flotation concentrate and flotation tailings are obtained; and the flotation concentrate is finely ground and then subjected to second-stage low-temperature oxygen pressure leaching. Flotation operation is introduced between the first-stage oxygen pressure leaching and the second-stage oxygen pressure leaching, a large amount of gangue minerals and iron are effectively separated and opened, the amount of materials entering the second-stage leaching is remarkably reduced, and therefore the second-stage ore grinding load and leaching energy consumption are greatly reduced while the high leaching rate of zinc, indium, copper and the like is guaranteed, and the leaching efficiency is improved. And efficient, energy-saving and stable treatment of the coarse-grained zinc sulfide concentrate in a zinc hydrometallurgy system is realized.

The invention discloses a flame-retardant insulating shield applied to safety protection of a fuse and a preparation method of the flame-retardant insulating shield, and belongs to the technical field of fuse shields, and the flame-retardant insulating shield specifically comprises the following raw materials in parts by weight: 80-100 parts of hybrid polyolefin, 20-30 parts of flame-retardant particles, 3-5 parts of a plasticizer, 1-2 parts of an antioxidant, 2-3 parts of a heat stabilizer and 2-3 parts of a lubricant. The preparation method comprises the following steps: preparing modified polysiloxane through siloxane hydrolysis by taking zinc sulfide particles as a carrier flame-retardant filler, hybridizing modified polyolefin with a light stabilizer structure in a chain segment by taking the modified polysiloxane as a chain extender, so as to prepare hybrid polyolefin, and carrying out melt blending on the hybrid polyolefin and auxiliary materials, so as to obtain the flame-retardant composite material. And the flame-retardant insulating fuse shield is prepared.

The invention relates to the technical field of wet smelting, in particular to a method for normal-pressure oxygen leaching of zinc sulfide concentrate and recovery of sulfur in slag. The method comprises the following steps: grinding the zinc sulfide concentrate to a target particle size; sulfuric acid and a leaching agent are added into the zinc sulfide concentrate to obtain a first reaction system, low-acid first-section normal-pressure oxygen leaching treatment is conducted on the first reaction system, and first-section normal-pressure oxygen leaching liquid and first-section normal-pressure oxygen leaching residues are obtained; the redox potential of the first reaction system is 280-380 mV; waste electrolyte is added into the first-section normal-pressure oxygen leaching residues to obtain a second reaction system, high-acid second-section normal-pressure oxygen leaching treatment is conducted on the second reaction system, and second-section normal-pressure oxygen leaching liquid and second-section normal-pressure oxygen leaching residues are obtained; the redox potential of the second reaction system is 350-450 mV; adding water into the second-section normal-pressure oxygen leaching residues to obtain slurry; performing sulfur transformation treatment on the slurry to obtain transformed slag; and recovering sulfur in the slag. The method can improve the direct recovery rate of sulfur recovery with low cost and low energy consumption.

The present invention discloses a device and method for preparing high-strength multi-spectral zinc sulfide sheets, comprising a bracket and a heating furnace fixed to the top of the bracket, a sealing cover hinged on the top of the heating furnace, a control box fixed to the top of the bracket, a vacuum pump fixedly installed inside the control box, an air inlet of the vacuum pump connected to an exhaust pipe, one end of the exhaust pipe passing through the control box and connected to the surface of the heating furnace, a one-way valve fixed to the surface of the exhaust pipe, a hollow cylinder connected to the surface of the exhaust pipe, and a vacuum sensor provided inside the exhaust pipe. The present invention relates to the technical field of zinc sulfide preparation. The device and method for preparing high-strength multi-spectral zinc sulfide sheets facilitate rapid installation and removal of the vacuum sensor through the provision of a vacuum sensor installation mechanism, facilitate subsequent maintenance and replacement, and are highly convenient to use. The provision of a cooling mechanism facilitates rapid cooling of the heating furnace, thereby improving cooling efficiency.

This invention belongs to the field of textile and chemical fiber technology, and specifically relates to a method for preparing electroluminescent fibers based on recycled polyester chips. The steps are as follows: carbon black and clean polyester fragments are mixed and granulated to obtain conductive recycled polyester chips; the conductive recycled polyester chips are melted and processed into conductive polyester fibers using a spinning device; zinc sulfide powder is condensed on the fiber surface using a vapor deposition chamber to form a zinc sulfide film; the fibers are immersed in a polyaniline solution reaction tank for in-situ polymerization to form a robust polyaniline coating. Finally, PET-ZnS-PANI electroluminescent fibers are obtained. This method integrates melt spinning, vapor deposition, and in-situ polymerization, and is suitable for industrial mass production. The luminescent fibers have high brightness and can illuminate the filaments.

The invention discloses a high-entropy metal sulfide nano material and a preparation method thereof, and relates to the field of high-entropy materials.Transition metal chlorate and sodium chloride are placed in a first reaction boat in the upstream area of a reaction container; placing the zinc sulfide nano-template in a second reaction boat in a downstream area of the reaction container; heating the reaction container to 500-525 DEG C at a first heating rate, keeping the temperature for 20-40 minutes, and transporting metal chloride gas volatilized by the eutectic effect of the precursor to a second reaction boat in a downstream area along with the dynamic airflow, so that the zinc sulfide nano-template reacts with the metal chloride gas; and cooling to room temperature at a second cooling rate, and collecting a solid product in the second reaction boat to obtain the high-entropy metal sulfide nano material. According to the method, the complex microstructure of the precursor template can be copied, and topological conversion is realized; and the chemical morphology, the components, the crystal structure and the like of the high-entropy nano material can be regulated and controlled.

The invention relates to an interferometric pigment comprising a layer of zinc sulfide-based material. The pigment advantageously comprises a low refractive index core and at least one high refractive index layer comprising zinc sulfide. The invention also proposes a method for synthesizing these pigments by non-homogeneously precipitating zinc sulfide on a powdered support, by adding a zinc salt solution to a reaction medium containing a dispersion of the powdered support, titrating a sodium sulfide solution having a fixed pH at a moderate temperature to obtain a precipitate. The invention also relates to cosmetic compositions comprising these interference pigments free of titanium dioxide, titanium dioxide being typically introduced as a filler or by providing a cosmetic ingredient containing titanium dioxide.

The application discloses a flue gas recovery system in a calcination zinc sulfide process and relates to the technical field of zinc sulfide production. The flue gas recovery system comprises, which are connected by pipelines in sequence, a waste heat recovery boiler, a bag-type dust collector, an electrostatic precipitator, a mixed converter, a cyclone separator, an absorption tower and a spray tower. The mixed converter comprises an outer cavity, an inner cavity and a tail gas inlet pipe. The tail gas inlet pipe is connected with one end of the inner cavity. The outer cavity is provided with a medium inlet at the end far from the tail gas inlet pipe. The outer cavity is provided with a medium outlet at the end far from the medium inlet. The inner cavity is provided with a tail gas outlet pipe at the end far from the tail gas inlet pipe. An oxygen inlet and a powder inlet are installed on the side wall of the inner cavity. The inner cavity is internally provided with a turbulence column. Under the guidance of the turbulence column, the tail gas, oxygen and catalyst powder can be fully mixed, which can accelerate the reaction speed of sulfur dioxide and oxygen in the tail gas, thereby accelerating the generation speed and quality of sulfur trioxide.

The invention discloses a photocatalytic coating based on a zinc sulfide / sepiolite composite material as well as a preparation method and application of the photocatalytic coating. According to the coating, a zinc sulfide / sepiolite composite material serves as a core functional component, a polymer emulsion base material, an auxiliary anion excitation material, an environment-friendly additive system and the like are combined, and efficient degradation of indoor pollutants and lasting release of negative oxygen ions are achieved through a multi-phase synergistic effect mechanism; according to the present invention, the formaldehyde decomposition rate can be significantly increased to more than 90%, the negative oxygen ion release concentration can achieve 3000-10000 / cm < 3 >, and the diversification requirements of people on the indoor air quality improvement can be met due to the radioactive concern and the light dependence of the traditional technology.

The application discloses a comprehensive utilization process of oxygen-sulfur mixed zinc concentrate. The comprehensive utilization process of the oxygen-sulfur mixed zinc concentrate comprises pretreatment, main reaction and post-treatment steps, and specifically comprises the following steps: slurry is prepared from the oxygen-sulfur mixed concentrate to be treated, and ultrasonic dispersion is performed to obtain material a; an oxygen-sulfur separation agent JH-3000 is added into the material a to perform stirring reaction, and the upper foam of the solution is scraped off gradually during the reaction to obtain foam b and slurry c; solid-liquid filtration is performed on the foam b, and the zinc sulfide product and slurry d are obtained after the solid-liquid separation of the foam b, and the slurry d and the slurry c are combined to obtain the zinc oxide product; the zinc oxide product is slurry-prepared; acid is added for adjustment, and then acid leaching is performed, the leaching liquid e is purified and electro-deposited to obtain zinc ingots; the zinc sulfide product is prepared after ore blending, and then roasting and sulfuric acid leaching are performed, and solid-liquid separation is performed to obtain leaching liquid g and leaching residue h; the leaching liquid g is purified and electro-deposited to obtain zinc ingots; and the flue gas of the roasting is prepared into sulfuric acid through an acid preparation system.

The invention discloses a fly ash dust suppressant and a preparation method thereof, and the fly ash dust suppressant comprises the following components in parts by mass: 200-600 parts of a fly ash-based inorganic binder, 5-20 parts of an organic binder, 1-3 parts of a binding film-forming agent, 2-10 parts of a graphite oxide-zinc sulfide composite material, 5-15 parts of a mixture of water-soluble starch and hydroxypropyl methyl cellulose, and 1-3 parts of magnesium chloride. 1-3 parts of a seaweed extract and 1-3 parts of nibergin complex ester; the invention has the following beneficial effects: by using the composite structure of graphite oxide and zinc sulfide, the capturing, adsorption and agglomeration capabilities of dust particles are effectively improved, a compact net-shaped structure is formed, the dust particles are locked in the net-shaped structure, and the structure not only significantly reduces flying and deposition of particles such as fly ash and the like, reduces environmental pollution, but also improves the service life of the fly ash and the like. In addition, functional factors in the dust suppressant can also play roles in preventing erosion and resisting scouring, the generation of flying dust is continuously inhibited, and a powerful guarantee is provided for environmental protection and staff health.

The invention belongs to the technical field of photocatalytic hydrogen evolution, and discloses preparation and application of a platinum monatomic modified zinc cadmium sulfide catalyst. Aiming at the urgent demand of clean energy under energy crisis and the problems of insufficient efficiency, complex preparation, high cost and the like of the existing photocatalytic hydrogen evolution material, the invention aims to provide a catalyst which is simple and convenient in process, controllable in cost and excellent in hydrogen evolution performance. According to the preparation method, zinc acetate, cadmium chloride, thiourea, polyvinylpyrrolidone, potassium tetrachloroplatinate and a hydrazine hydrate solution are taken as raw materials, and precise modification and stable loading of platinum single atoms on the surface of zinc cadmium sulfide are realized through combination of a hydrothermal synthesis method and a photodeposition technology. The catalyst shows excellent catalytic activity and long-term stability in the field of photocatalytic hydrogen evolution, the hydrogen evolution efficiency can be remarkably improved, an efficient solution is provided for clean energy development, and the application value is wide.

This invention discloses a method for preparing a nano-zinc sulfide composite material, comprising: (1) dissolving ammonium molybdate in deionized water, stirring evenly to form a 50 g / L solution, then sequentially adding zinc acetate and thiourea, wherein the mass ratio of ammonium molybdate to zinc acetate and thiourea is 2:1, and stirring thoroughly to obtain a mixed solution; (2) transferring the obtained mixed solution to a reaction vessel, reacting at a constant temperature of 160℃ for 12 h, and obtaining a solid powder after treatment; (3) heat-treating at 300-400℃ for 2 h to obtain the nano-zinc sulfide composite material. This invention synthesizes zinc sulfide nanomaterials with different sizes and morphologies, while molybdenum dioxide nanoparticles modify the surface of zinc sulfide. The two work synergistically to have heterogeneous structural characteristics that promote and accelerate electron transport. Using them as electrode materials for electrochemical detection of nicotine and the metabolite cotinine content in cigarettes shows potential application advantages.

The invention relates to the field of zinc sulfide production, in particular to a reaction device and system for producing zinc sulfide products, the reaction device comprises side covers, a plurality of reaction chambers are installed on the side covers, the two side covers are symmetrically installed on the two sides of a conveying mechanism, and an outlet end cover and an inlet end cover are installed at the two ends of the conveying mechanism and the two ends of the two side covers respectively. The outlet end cover is externally connected with a negative pressure pump, and a uniform mixing mechanism is mounted in the inlet end cover in a sealing manner and is used for uniformly mixing sulfur steam and zinc steam; the conveying mechanism comprises a side plate and a conveying channel, an upper conveying part and a lower conveying part are mounted on the conveying channel, nozzles are rotationally mounted on the upper conveying part and the lower conveying part, and the nozzles are arranged in the reaction chamber. By controlling the air pressure in the reaction chamber, the consistency of the deposition thickness of a product is controlled, and the phenomenon that the product is too thin is avoided; by controlling the gas inlet direction and position of the reaction gas in the reaction chamber, the phenomenon of non-uniform deposition of the product thickness is avoided.

This invention discloses a highly efficient method for reducing ferric ions in zinc leaching solution, belonging to the field of hydrometallurgical technology. The zinc leaching solution and zinc sulfide concentrate are placed in a closed reactor and subjected to a pressure-enhanced reduction reaction at a temperature of 100-120℃ and a pressure of 0.2-0.3 MPa to reduce the ferric ions in the leaching solution. Simultaneously, compressed air is introduced into the reaction system to prevent the generation of hydrogen sulfide gas. The reaction time is 0.5-2.0 h. The reduced reaction system is then settled and filtered to obtain the reduced solution and reduced sulfur residue. This technical solution innovatively proposes the use of compressed air for pressure-enhanced reduction of Fe in zinc leaching solution. 3+ This achieves the suppression of H2S gas generation while avoiding the reduction of Fe. 2+ It is oxidized again to Fe by a high concentration of O2. 3+ The pressurized reduction process within a closed container significantly improves reduction efficiency while enhancing the production environment. It achieves the cascade separation and enrichment of multiple metals, closed-loop circulation of the medium, and the reduction, resource recovery, and harmless treatment of slag.

This utility model discloses a comprehensive treatment system for zinc-containing waste generated in viscose fiber production, belonging to the field of waste treatment in viscose fiber production. The system includes a reaction tank, filter press, pretreatment device, filter, ion exchange resin column, and acid bath preparation tank, ensuring a comprehensive treatment pathway for zinc-containing waste. This facilitates the mixing of highly acidic, high-salt zinc-containing wastewater with zinc-containing sludge. The strong acidity of the wastewater allows for the acid leaching of zinc sulfide and zinc hydroxide in the sludge, simultaneously obtaining a zinc sulfate solution and recovering sulfate to prepare sodium sulfate and sulfuric acid. This reduces the salinity of the wastewater, thereby decreasing the amount of reagents used in treating zinc-containing wastewater, mitigating scaling risks, and reducing the load on subsequent biochemical systems.

The invention discloses a composite nano preparation based on zinc sulfide quantum dots as well as a preparation method and application thereof, and relates to the technical field of nano agriculture and plant disease prevention and control. The nano preparation disclosed by the invention has high antibacterial efficiency, and the prepared ZnSQDs and the composite nano preparation of the ZnSQDs can show a remarkable inhibition effect on the Xanthomonas oryzae pv.oryzae (Xoo) under the condition of an extremely low dosage (2 to 10 mg / L), so that the ZnSQDs and the composite nano preparation of the ZnSQDs can be used for inhibiting the Xanthomonas oryzae pv.oryzae (Xoo) of the Xanthomonas oryzae pv.oryzae (Xoo); compared with the traditional chemical pesticide which can achieve the prevention and treatment effect only through the dosage of 100 milligrams per liter or even gram, the effective dosage of the compound is greatly reduced, and the compound shows ultrahigh antibacterial activity; meanwhile, due to the high specific surface area and active surface sites of the nano-material, the nano-material can be in full contact with pathogenic bacteria, and the action efficiency is improved, so that breeding and diffusion of the pathogenic bacteria can be effectively inhibited in the early stage, and diseases are remarkably reduced.

The invention relates to a method for synergistically leaching leaching residues in zinc sulfide concentrate and zinc calcine, and belongs to the technical field of metallurgical engineering. The method comprises the following steps that (1) zinc sulfide concentrate is divided into two parts to be treated, one part of zinc sulfide concentrate is directly subjected to oxygen pressure leaching, and oxygen pressure leaching liquid and oxygen pressure leaching residues are obtained; the other part of zinc sulfide concentrate and the neutral leaching residues of the zinc calcine are subjected to reduction synergistic leaching together, and reduction leaching liquid and reduction leaching residues are obtained; (2) mixing the oxygen pressure leachate and the reduction leachate, and removing iron by using a hematite or goethite method to obtain iron slag and iron-removed liquid; (3) after the iron-removed liquid is purified, purified slag and new liquid are obtained, the new liquid is sent to an electrodeposition process, and the purified slag is sent to a recovery process to recover Cu, Cd and Co; wherein the oxygen pressure leaching residues, the reduction leaching residues and the iron residues are directly sold. According to the method, the slag rate of the oxygen pressure leaching slag can be remarkably reduced, and the leaching rate of zinc can be increased.

The invention relates to the technical field of solid waste recycling, and discloses a method for stepwise selectively leaching zinc, germanium, indium and tin from zinc smelting waste residues, which comprises the following steps: mixing hydrogen peroxide and a sulfuric acid solution, adding the zinc smelting waste residues, and carrying out potential-controlled neutral leaching under the action of ultrasonic waves to obtain first leaching residues and first leaching liquid; mixing the first leaching residues with hydrochloric acid and tartaric acid, and performing coordination leaching to obtain second leaching residues and second filtrate; according to the method, first-stage leaching is carried out through cooperation of ultrasonic waves and hydrogen peroxide enhanced oxidation, sulfide such as zinc sulfide is effectively promoted to be converted into oxide, zinc is preferentially dissolved out, and meanwhile dissolution of germanium, indium and tin is inhibited, so that the germanium, the indium and the tin are enriched in leaching residues. In the second-stage leaching, hydrochloric acid effectively destroys a lead sulfate wrapping layer formed in the neutral leaching process, and wrapped valuable metal is released; tartaric acid forms a stable soluble complex with germanium, indium and tin ions, and efficient selective leaching is achieved.

This invention relates to the field of hydrogen energy technology, specifically to a photocatalytic water splitting method for hydrogen production. It addresses the problems of harsh reaction conditions, low hydrogen production efficiency, and poor catalyst cycle stability in existing photocatalytic hydrogen production methods. Specifically, it uses water as the reaction medium, adds a catalyst and an electron sacrificial agent, and achieves hydrogen production through water splitting under visible light irradiation. The catalyst is prepared from cobalt ferrite, indium zinc sulfide, and biochar, and the electron sacrificial agent is triethanolamine. This method enhances the separation and transport of photogenerated carriers through the synergistic effect of the catalyst and electron sacrificial agent, resulting in high hydrogen production efficiency, strong stability, simple process, and controllable cost. Furthermore, hydrogen energy, as a zero-carbon energy source, can replace fossil fuels, reducing pollution and carbon emissions at the source, contributing to the dual carbon goals, and providing an efficient solution for large-scale hydrogen production, possessing both industrial application and ecological environmental value.

The invention discloses a method for preparing metal zinc through molten salt electrolysis in the technical field of molten salt electrolysis, and aims to solve the technical problems of high energy consumption, serious pollution, complex zinc hydrometallurgy process and heavy environmental load of traditional pyrometallurgical zinc. The method comprises the following steps: by taking mixed molten salt consisting of two or three of zinc sulfide and zinc sulfide as an electrolyte, taking zinc sulfide as a raw material, adding flaky sodium sulfide and 1 # lead to optimize an electrolysis system, carrying out constant-voltage electrolysis at 600-720 DEG C and 3.2-4.0 V by taking a graphite crucible as a cathode and a graphite rod as an anode under the protection of inert gas, and separating by utilizing density difference to obtain metal zinc. The method is short in process and high in efficiency, does not need complicated steps such as roasting, leaching and purifying, obviously reduces energy consumption, does not generate a large amount of waste liquid and residues, is outstanding in environmental protection property, and provides a green and efficient new scheme for the zinc smelting industry.

The present invention discloses a plant based industrial lubricant formulation that includes three major components. The first component includes at least one constituent such as ester of soyabean oil, ester of sesame oil, ester of corn oil, ester of caster oil, ester of canola, ester of safflower oil and the like. The second component includes at least one of the constituents including Sapindus mucorossi, neem oil and calendula oil. Further, the third component is a nanoparticle component which includes Zinc Sulfide nanoparticles, hexagonal boron nitrate nanoparticles and molebdenum disulfide nanoparticles. Also disclosed is a process for preparation of a plant based industrial lubricant of the present invention. This lubricant formulation has varied applications in various industries due to adjustable viscosities and flashpoints.

The invention belongs to the technical field of zinc smelting, and discloses a hematite production process applied to a zinc oxygen pressure leaching main system. After mineralization and iron precipitation are carried out on liquid obtained after indium precipitation of the zinc sulfide concentrate, most of iron in the zinc sulfide concentrate enters slag in the form of hematite, so that harmless treatment and resource utilization of iron are achieved, and meanwhile the recovery rate of copper and indium can be increased. The technology is high in raw material adaptability and suitable for removing iron in a solution with the high iron content in a former solution, the zinc content in iron slag is very low, and the slag rate of the iron slag is low. In addition, the iron is independently opened, so that the yield of the leaching residues can be greatly reduced, and the selection of a later-stage leaching residue treatment process and the reduction of the cost are facilitated. The zinc loss is less, the improvement of the zinc smelting recovery rate is promoted, the advanced level of the industry is achieved, the produced iron slag is high in iron grade, meets the standard of fine iron powder and can be sold to iron and steel smelting enterprises as raw materials, the improvement of the comprehensive benefits of the zinc smelting enterprises is facilitated, and a green and environment-friendly valuable metal recovery technology is provided.

The invention discloses a zinc sulfide production process and drying equipment for production, and relates to the technical field of zinc sulfide production, the zinc sulfide production process comprises a drying machine shell, a treatment mechanism is arranged in the drying machine shell, the treatment mechanism comprises a stirring assembly and a rotary drum assembly, and the stirring assembly comprises a stirring base rod; a plurality of stirring supporting rods are arranged on the side surface of the stirring base rod, a movable triggering top block is arranged on the surface of one side of each stirring supporting rod, and an elastic block is arranged on the surface of the side, close to the corresponding stirring supporting rod, of each triggering top block; according to the scheme, by arranging the stirring assembly and the rotary drum assembly, crushing can be conducted when large filter cakes are encountered in the stirring process, the crushing degree of materials is improved, the drying speed is increased, and the drying quality is improved.

The invention discloses a method for stably fixing sulfides in water for a long time. The method comprises the following operation steps: step 1, preparing a composite reagent; 2, fixing the water sample; 2, fixing the water sample; step 4, automatic detection; step 5, quality control; the invention has the following beneficial effects: through steric hindrance effect and electrostatic repulsion effect of sodium carboxymethyl cellulose, zinc sulfide is uniformly dispersed in the form of 50-200nm nanoscale particles, particle aggregation and sedimentation are effectively inhibited, long-acting preservation of more than or equal to 7 days is realized, pH value adjustment or addition of other chemical reagents is not needed during preservation, and the method is simple and convenient to operate. A dynamic equilibrium system is established through coordination competition of disodium ethylene diamine tetraacetate and zinc ions, and when the concentration of sulfide in a water sample changes in a range of 0.1 mg / L-50 mg / L, the release rate of the zinc ions can be adaptively adjusted, so that complete generation of zinc sulfide precipitates is ensured, and a wider concentration detection range is covered.

The invention relates to a plane cutting method and device for a zinc selenide zinc sulfide plate. The method comprises the steps that a to-be-cut material, the cutting thickness and cutting machining data are obtained, the to-be-cut material is placed on a material table of cutting equipment, and the center of the to-be-cut material coincides with the center of the material table; drawing a cutting line on the to-be-cut material according to the cutting thickness, and adjusting the position of a cutting tool in the cutting equipment according to the cutting line and the size of the to-be-cut material to obtain the position of the cutting tool; adjusting the position of a cutting liquid spraying element in the cutting equipment according to the position of the cutting tool; according to the cutting processing data, the adjusted cutting equipment is controlled to carry out first-time rotary cutting on the to-be-cut material until an anti-touch supporting column is reserved in the center of the to-be-cut material, and a semi-cut product is obtained; and the cutting crack of the semi-cut product is stuffed with an isolation element, the cutting equipment is controlled to cut the semi-cut product for the second time till the anti-touch supporting column is cut completely, and the cut product is obtained.

The application discloses a method for recovering zinc and lead metals from lead-rich slag generated in a zinc smelting process, which comprises low-temperature acid leaching, magnetic separation, oxidation heap leaching, stirring leaching and the like processes, so that the lead-rich slag is subjected to low-temperature acid leaching and magnetic separation first, zinc compounds which are easily soluble are leached out sufficiently, and the content of iron ions entering the liquid phase is effectively reduced, thereby reducing the interference of iron ions in the zinc liquid, then the processes of oxidation heap leaching and stirring leaching are combined, and zinc ferrite and zinc sulfide minerals which are difficult to be acid-dissolved can be further dissolved, the zinc-containing substances basically enter the liquid phase, the target of separating lead and zinc is achieved, and finally, combined with dilute hydrochloric acid washing, part of calcium and silicon compounds can be dissolved, so that the lead grade in the final slag is improved, and comprehensive utilization is realized.