220 results about "Zinc ferrite" patented technology

This invention relates to a method for the combined leaching of high-silicon zinc roasted ore and high-sulfur zinc oxide powder, belonging to the field of hydrometallurgical technology. The high-sulfur zinc oxide powder is leached neutrally to obtain zinc oxide leaching residue and zinc powder leaching solution. The zinc powder leaching solution is then mixed with high-silicon zinc roasted ore slurry for controlled silica leaching of the high-silicon zinc roasted ore to obtain zinc ore leaching residue and zinc ore leaching solution. The zinc powder leaching residue and zinc ore leaching residue are mixed and then subjected to low-acid leaching to obtain low-leaching residue and low-leaching solution. The low-leaching residue is then subjected to hot acid leaching to obtain hot-leaching residue and hot-leaching solution. The hot-acid residue is then subjected to high-acid leaching to obtain lead-silver slag product and high-leaching solution. The hot-leaching solution is neutralized and reduced by high-sulfur zinc oxide powder to obtain neutralized solution and neutralized residue. The neutralized solution is then subjected to mineralization and iron precipitation to obtain hematite product and iron-removed solution. This invention can effectively control the leaching of silicon in the high-silicon zinc roasted ore leaching process, and simultaneously realize the oxidative leaching of sulfides in zinc oxide powder and the reductive leaching of zinc ferrite in zinc roasted ore, thus simplifying the leaching process of zinc roasted ore and zinc oxide powder.

A preparation method of a broadband low-loss high-Bs power manganese zinc ferrite material relates to an electronic material technology, and comprises the following steps: step 1, taking Fe2O3, ZnO and MnO as raw materials, and batching; step 2, performing primary ball milling on the ingredients obtained in the step 1, and then drying and sieving to obtain a primary ball-milled material; step 3, pre-sintering; step 4, by taking the mass of the pre-sintered material obtained in the step 3 as a standard, adding 0.02 to 0.04 weight percent of V2O5, 0.02 to 0.04 weight percent of Nb2O5, 0.02 to 0.04 weight percent of ZrO2, 0.04 to 0.07 weight percent of TiO2 and 0.01 to 0.03 weight percent of YIG, so as to obtain doped mixed powder; step 5, secondary ball milling; step 6, granulating; step 7, pressing the granulated material into a green body part; and step 8, sintering the green body by stages. According to the invention, the initial permeability is improved while the resistivity of the power manganese-zinc ferrite is improved.

The invention belongs to the field of photocatalytic material preparation, and particularly relates to a ZnFe2O4 / TiO2 / BC composite material as well as a preparation method and application thereof. The novel photocatalytic material ZnFe2O4 / TiO2 / BC composite material is prepared through a sol-gel method and a coprecipitation method, the photocatalytic performance of titanium dioxide and zinc ferrite is improved, and the application field of titanium dioxide and zinc ferrite is widened. The dopant provided by the invention is relatively low in price, the process is relatively simple, and the photocatalyst with a wider light absorption range can be prepared and can be used for degrading sulfamethoxazole.

The invention relates to the technical field of manganese zinc ferrite materials, and particularly discloses a manganese zinc ferrite high-frequency high-impedance material and a preparation process thereof. The manganese zinc ferrite high-frequency high-impedance material is prepared from the following raw materials: Fe2O3, Mn3O4, ZnO, a carbon nanotube loaded rare earth oxide composite material, P2O5, Co2O3 and CaCO3. The preparation raw materials of the carbon nanotube loaded rare earth oxide composite material comprise a multi-walled carbon nanotube and a rare earth salt, and the mass ratio of the multi-walled carbon nanotube to the rare earth salt is 1: (0.12-0.14). According to the invention, the loss capability of the manganese zinc ferrite material to electromagnetic interference is enhanced, and the problem that the magnetic conductivity and impedance of the material are reduced in a high-frequency environment is solved.

The invention discloses a method for degrading gold cyanidation tailings through photo-Fenton of an aluminum-based bimetallic catalyst, and belongs to the technical field of cyanidation tailings treatment. Iron salt and zinc salt are loaded on activated aluminum oxide through an impregnation method, the aluminum-based bimetallic catalyst is obtained through the treatment processes of roasting, grinding, drying and the like, and iron oxide and zinc ferrite contained in the synthesized aluminum-based bimetallic catalyst are main active substances for degrading cyanide residues through photo-Fenton catalysis; under the participation of hydrogen peroxide and an ultraviolet light source, the concentration of cyanide in the cyanide residues can be remarkably reduced, toxicity detection on the reacted filter residues shows that the concentration of the cyanide is lower than the national standard, and the cyanide residues can be treated as general solid waste; the cyanide removal rate can reach 95% or above, and the method has a very good application prospect.

The invention discloses a halogen-free low-smoke flame-retardant degaussing cable for ships, and the cable comprises a copper conductor, the outer layer of the copper conductor is sleeved with an insulating layer, and the outer layer of the insulating layer is sleeved with a degaussing flame-retardant composite layer. The degaussing flame-retardant composite layer is prepared from a degaussing flame-retardant composite material; the degaussing flame-retardant composite material comprises the following raw materials in parts by mass: 100 parts of an ethylene-vinyl acetate copolymer, 15-20 parts of nano nickel-zinc ferrite, 60-80 parts of a modified flame retardant, 10-15 parts of red phosphorus microcapsules and 3-5 parts of nano montmorillonite, and the halogen-free low-smoke flame-retardant degaussing cable for ships and warships provided by the invention is a halogen-free low-smoke flame-retardant degaussing cable for ships and warships. Through the multistage flame-retardant system design and the nano ferrite degaussing integration and interface synergistic strengthening process, synergistic optimization of halogen-free, low-smoke, high-flame-retardant and degaussing functions of the ship cable is realized, and compared with the traditional technology, the ship cable is remarkably improved.

Described is an intrinsically multiplexed magnetostatic surface wave (MSSW) device comprising of a pair of transducers that couple to one or more plurality of ferrite films. In embodiments, the ferrite films may be provided as one or more of a YIG, Nickle Zinc Ferrite, Lithium Ferrite configured to simultaneously provide the MSSW device having an associated plurality of MSSW operational bandwidths. The concepts, structure and technique described herein may be used to provide broadband magnetostatic surface wave devices that employ intrinsic multiplexing techniques which enable customizable frequency responses over broad bandwidths.

This invention discloses a high Curie temperature, high frequency, and high impedance manganese-zinc ferrite material and its preparation method, belonging to the technical field of soft magnetic ferrite materials. The manganese-zinc ferrite material consists of a main component and secondary components. The main component, calculated as oxides, comprises Fe2O3: 48.5–49.9 mol%, ZnO: 18.5–21.5 mol%, NiO: 0.5–2.0 mol%, with the remainder being MnO. The secondary components, by weight of the main component, include at least four of the following: Co2O3: 0.05–0.30 wt%, SiO2: 0.005–0.01 wt%, CaCO3: 0.02–0.05 wt%, ZrO2: 0.01–0.02 wt%, Bi2O3: 0.01–0.03 wt%, and V2O5: 0.01–0.05 wt%, mixed in any proportion. The resulting manganese-zinc ferrite material exhibits excellent properties such as high impedance.

A rhombohedral Zn2SiO4 / cubic ZnFe2O4 / hexagonal SiO2 / C nanocomposite material includes a rhombohedral zinc orthosilicate (Zn2SiO4) phase, a cubic zinc ferrite (ZnFe2O4) phase, and a hexagonal silicon dioxide (SiO2) phase. The rhombohedral Zn2SiO4 / cubic ZnFe2O4 / hexagonal SiO2 / C nanocomposite material exhibits a morphology including spherical microscale particles with an average diameter ranging from 0.8 micrometer (μm) to 1.8 μm and irregular nanoscale aggregates with an average diameter ranging from 50 nanometer (nm) to 110 nm. The rhombohedral Zn2SiO4 / cubic ZnFe2O4 / hexagonal SiO2 / C nanocomposite material has an adsorption capacity for basic fuchsin dye of greater than or equal to 140 milligrams per gram (mg / g). Furthermore, a method for producing the rhombohedral Zn2SiO4 / cubic ZnFe2O4 / hexagonal SiO2 / C nanocomposite material includes calcination of metal precursors.

The utility model discloses an optical module circuit board device with good anti-interference and heat-conducting properties, which comprises a circuit board body, an anti-interference cover is adhered to the top of the circuit board body, a heat-conducting wear-resistant cover is movably arranged at the position, close to the edge, of the top of the anti-interference cover, and supporting frames are movably and symmetrically arranged at the two ends of the bottom of the circuit board body. The anti-interference cover comprises an outer copper-clad plate layer, a nickel-zinc ferrite layer, a conductive rubber layer, a metal micro-powder wave-absorbing material layer and an inner copper-clad plate layer which are sequentially arranged from outside to inside, and the heat-conducting wear-resistant cover comprises a metal substrate, a ceramic substrate, a heat-conducting silica gel layer and a polymer insulating substrate which are sequentially arranged from outside to inside. According to the utility model, the anti-interference cover adhered to the top adopts a multi-layer structure, and the outer copper-clad plate layer, the nickel-zinc ferrite layer, the conductive rubber layer, the metal micro-powder wave-absorbing material layer and the inner copper-clad plate layer are sequentially arranged from outside to inside, so that external electromagnetic interference can be shielded and absorbed in all directions through the design.

A method for producing a soft magnetic manganese-zinc ferrite with a wide temperature range and high magnetic permeability for automotive electronics, characterized in that the material comprises main components and auxiliary components, wherein the main components comprise Fe₂O₃: 53 mol% to 55 mol%, ZnO: 16 mol% to 19 mol%, the remainder being Mn₃O₄, wherein, based on the total weight of the main components, the auxiliary components comprise nano-CaCO₃: 400 ppm to 1000 ppm, nano-TiO₂: 2000 to 6000 ppm, nano-Co₂O₃: 500 ppm to 2000 ppm, nano-Nb₂O₅: 100 ppm to 350 ppm, nano-SiO₂: 20 ppm to 150 ppm, nano-CuO: 0 ppm to 600 ppm, wherein the method for production comprises the following steps: Step 1, Preparation: the main components Fe2O3, ZnO and Mn3O4 are weighed according to their proportions and mixed by wet ball milling, with a mixing time of 10 to 40 minutes; Step 2, Pre-firing: the mixture obtained from step 1 is dried and pre-fired at 700 °C to 1000 °C, holding the temperature for 1 to 3 hours; Step 3, Grinding: the pre-burned material obtained from step 2 is shaken and the auxiliary components Nano-CaCO3, Nano-TiO2, Nano-Co2O3, Nano-Nb2O5, Nano-SiO2 and Nano-CuO are added according to the proportions, using the fluidized bed airflow milling method to grind the pre-burned material; Step 4, Granulation: the powder is granulated after airflow milling; Step 5, Pressing and Forming: it is pressed into a ring-shaped base body with the dimensions Ø 25mm in diameter * Ø 15mm in diameter * 7.5mm, with a density of 3.15g / cm³. 3 up to 3.35g / cm³ 3 amounts; Step 6, sintering, where the sintering temperature is 1200 to 1280°C, the holding time is 4 to 8 hours and the equilibrium oxygen content is 3.0 to 8.0%.

The invention discloses ultralow-loss manganese zinc ferrite and a preparation method thereof, and belongs to the technical field of ferrite soft magnetic materials. The ultralow-loss manganese zinc ferrite comprises the following raw materials: a main component, a first additive and a second additive, the main components comprise Fe2O3, ZnO and MnO; the first additive comprises one or more of SiO2 (silicon dioxide), TiO2 (titanium dioxide) and ZrO2 (zirconium dioxide); and the second additive is prepared from one or more of CaCO3, Co3O4, CuO and Al2O3. According to the invention, through step-by-step addition of the specific additives, comprehensive and effective reduction of the loss of the manganese-zinc ferrite core is finally realized, and the performance goal of ultra-low loss is achieved.

The present invention generally relates to a method for synthesizing dysprosium-doped copper-zinc ferrite nanomaterials with enhanced structural and functional properties. The method comprises dissolving stoichiometric quantities of copper nitrate trihydrate, zinc nitrate hexahydrate, iron nitrate nonahydrate, and dysprosium nitrate hexahydrate in distilled water to prepare an oxidizer solution. A fuel mixture is separately prepared using urea and glucose in equal proportions by weight. The oxidizer and fuel mixtures are combined in 1:1 ratio, calculated based on their respective oxidizing and reducing valencies, to form a homogeneous precursor solution. This solution is stirred thoroughly for about one hour and subsequently transferred to a Pyrex dish. The dish is placed in a muffle furnace preheated to approximately 450° C., where the solution undergoes a self-sustained combustion reaction, yielding a fine, porous Cu0.5Zn0.5DyxFe2-xO4 ferrite powder within 20 minutes. The resultant powder is ground to achieve uniform particle distribution suitable for advanced applications.

Broadband high T c High-conductivity manganese-zinc ferrite and preparation method, belong to ferrite material preparation technical field. High specific surface area raw material is adopted, contact area of powder in ball milling process is increased, reaction activity is improved, and sintering temperature is reduced; MnZn ferrite main formula adopts iron-rich zinc-deficient system, superexchange interaction is enhanced, and material Curie temperature is realized; secondary ball milling introduces combined additives, sintering process grain growth mechanism is regulated by means of fluxing and crystal resistance dual effects, Co2O3 is used to compensate MnZn ferrite magnetic crystal anisotropy constant, and initial magnetic permeability is improved; CaSiO3 is introduced, and is enriched in grain boundary in the sintering process, grain boundary resistivity is improved, and magnetic permeability frequency characteristic is improved; in the sintering process, oxygen partial pressure is accurately controlled in the holding and cooling stages, Fe 2+ Ion generation amount is influenced, sample resistivity is improved, and suitable sintering temperature and holding time are beneficial to grain growth and material densification.

The utility model provides a three-dimensional coil and planar coil combined wireless charging system, which relates to the technical field of wireless charging and comprises a transmitting end and a receiving end. The transmitting end comprises a direct-current power supply, an inverter circuit, a transmitting end compensation circuit and a transmitting coil; the receiving end comprises a receiving coil, a receiving end compensation circuit and a rectification filter circuit. Wherein the transmitting coil comprises a manganese zinc ferrite magnetic core and a three-dimensional coil, and the three-dimensional coil is spirally and densely wound on the outer side of the manganese zinc ferrite magnetic core; the receiving coil comprises a planar coil and manganese zinc ferrite flat magnetic bars, the planar coil is wound into a circular ring shape, the manganese zinc ferrite flat magnetic bars are alternately arranged on the circular ring-shaped planar coil along the normal direction and the tangential direction, and the difference between two adjacent normal manganese zinc ferrite flat magnetic bars is 60 degrees; the difference between two adjacent tangential manganese zinc ferrite flat magnetic bars is 60 degrees, and the difference between the adjacent normal manganese zinc ferrite flat magnetic bar and tangential manganese zinc ferrite flat magnetic bar is 30 degrees.

The utility model relates to the soft magnetic material production cleaning field especially relates to a raw material cleaning device for zinc ferrite high -grade soft magnetic material production. The utility model provides a raw material cleaning device for zinc ferrate high -grade soft magnetic material production, including support frame, outer layer cylinder, inner layer cylinder, motor, gear and gear ring etc. ; The outer layer cylinder is fixedly connected in the middle of support frame top, the inner layer cylinder is slidably connected in the outer layer cylinder, the motor is fixedly connected in the outer layer cylinder front side, the motor is located water pump right side, the gear is fixedly connected on motor output shaft, the outer layer cylinder outside edge is sleeved with gear ring, and the gear ring is mutually engaged with gear, the utility model drives the rotation of gear and gear ring through motor, makes the inner layer cylinder rotate in the outer layer cylinder, and this mechanized operation mode can more evenly, more completely wash zinc ferrate raw material, and compared with traditional cleaning mode not only has improved the efficiency, can guarantee the quality of cleaning.

The application discloses a preparation method and application of a polytriazimide / zinc ferrite photocatalytic composite material, and the composite material adopts a low-temperature molten salt method to prepare a high-crystallinity polytriazimide hexagonal prism as a structural reference; then zinc ferrite nanoparticles are in-situ grown on the surface of the hexagonal prism. The application in-situ grows visible light response semiconductor zinc ferrite nanoparticles on the surface of a polytriazimide hexagonal prism photocatalytic material for the first time; by constructing an organic / inorganic heterostructure, the defects of low utilization rate of visible light of the polytriazimide and acceleration of photogenerated carrier separation of a single-component material can be effectively solved, so that the overall photocatalytic activity of the composite material is improved. The photocatalytic composite material can be directly applied to removal of pathogenic microorganisms and organic antibiotic pollutants in water under visible light irradiation, and has great application prospect.

The invention provides a wide-temperature high-frequency high-impedance manganese zinc ferrite material and a preparation method thereof, and relates to the technical field of magnetic materials. The manganese zinc ferrite material comprises main components and auxiliary components, the main components comprise Fe2O3, ZnO, Mn3O4 and MgO, and the auxiliary components comprise Na2O, Co2O3, Li2O and K2O; the high-frequency high-impedance manganese-zinc ferrite material with the wide-temperature characteristic provided by the invention has the characteristics of high magnetic conductivity and high resistivity, is good in high-frequency impedance characteristic, relatively stable in magnetic conductivity and high-frequency impedance at the temperature of-40 to 120 DEG C, small in temperature influence change, and capable of stably working in an environment with sudden temperature change; and stable and safe operation of instruments and equipment is ensured.

The invention provides a method for rapidly dissolving a zinc ferrite material and a resourceful treatment method. The method for rapidly dissolving the zinc ferrite material comprises the steps that S1, copper powder and an acidic copper sulfate solution are provided, the concentration of bivalent copper ions in the acidic copper sulfate solution is not smaller than 10 g / L, and the concentration of sulfuric acid in the acidic copper sulfate solution is not smaller than 80 g / L; s2, mixing the zinc ferrite material, the copper powder and the acidic copper sulfate solution together to obtain a zinc ferrite leaching solution; the mass ratio of zinc ferrite in the zinc ferrite material to the copper powder is less than 1: 0.27. According to the method, the dissolving time of zinc ferrite can be remarkably shortened, and zinc ferrite can be completely dissolved within 2-5 min.

This invention discloses a wide-temperature, low-loss manganese-zinc ferrite and its preparation method, belonging to the technical field of ferrite soft magnetic materials. The manganese-zinc ferrite comprises a main component, a first additive, and a second additive; the main component includes Fe2O3, ZnO, and MnO; the first additive includes one or more of SnO2, TiO2, Cr2O3, Co3O4, and CuO; the second additive includes one or more of SiO2, CaCO3, ZrO2, Nb2O5, and Ta2O5. The preparation method includes the following steps: primary ball milling; primary sintering; secondary ball milling; granulation; molding; and secondary sintering. This invention optimizes the preparation process by adding additives with different functions in batches during the primary and secondary ball milling processes, and makes simple adjustments to the primary and secondary sintering processes, thereby effectively reducing the core loss of the manganese-zinc ferrite and improving its temperature stability.

The embodiment of the application discloses high magnetic permeability manganese-zinc ferrite broadband material KAH150 material and a preparation method thereof, the material has the magnetic permeability ui in the range of 10000-15000+ / -25% under the condition of 10-200KHZ frequency; the Curie temperature Tc of the material is greater than 130 DEG C; the method comprises the following steps: obtaining raw materials according to the proportioning mode that Fe2O3 is 51.2-54.5mol%, ZnO is 19.1-22.40mol%, and the rest is MnO; the raw materials are sequentially subjected to ball milling, pre-sintering, secondary sand milling, spray granulation, blank preparation and sintering treatment, and the high magnetic permeability manganese-zinc ferrite broadband material KAH150 material is obtained. Through the combination adjustment of fixed formula and doping, the material magnetic permeability can still maintain ui >=10000 at 200KHZ, and the high-frequency performance is greatly improved.

The present invention discloses a novel photoelectrocatalytic material and preparation method for forming a heterojunction between cobalt-nickel doped tungsten trioxide and zinc ferrite. The experiment prepared a photoelectrocatalyst forming a heterojunction between cobalt-nickel doped tungsten trioxide and zinc ferrite through precise three-step hydrothermal and passivation treatment. The heterojunction preparation method is as follows: first, deionized water, sodium tungstate dihydrate, potassium oxalate, cobalt nitrate hexahydrate, and nickel chloride hexahydrate are mixed and stirred to obtain a precursor through a hydrothermal method; then, the precursor is dried and sintered to obtain cobalt-nickel doped tungsten trioxide; then, a zinc ferrite film is prepared by mixing ferric chloride hexahydrate, sodium nitrate, and zinc nitrate hexahydrate through a secondary hydrothermal method, sintering, and soaking in sodium hydroxide; finally, a nickel-iron oxide passivation layer is loaded through a hydrothermal method. Compared with ordinary zinc ferrite, the heterojunction formed by the cobalt-nickel doped tungsten trioxide loaded with the zinc ferrite film has significant advantages such as excellent performance, excellent photocorrosion resistance, and stable performance.

This application provides a filler for an encapsulation material and its preparation method, a magnetic molding compound, and an encapsulation device. The filler for the encapsulation material includes ferrite particles, wherein the ferrite particles include nickel-copper-zinc ferrite (Ni... a Zn b Cu c Fe d The O4 material has the following properties: a ranges from 0.3 to 0.55, b ranges from 0.45 to 0.55, c ranges from 0 to 0.2, and d ranges from 1.8 to 2. The ferrite particles have a particle size of 2-11 μm, accounting for 50-70% of the total. This filler has advantages such as low relative density, wide absorption bandwidth, and good high and low temperature performance, thereby reducing the overall weight of the packaged device and improving its electromagnetic interference resistance and applicable temperature range.

A method for preparing a zinc ferrite-based catalyst according to an embodiment of the present application comprises the steps of: contacting a metal precursor solution including a zinc precursor, a ferrite precursor, an acid solution and water with a basic aqueous solution to obtain a precipitate; and filtering and thereafter drying and calcining the precipitate, wherein the acid solution includes one or more of nitric acid (HNO3) and hydrocarbon acid.

The present invention discloses a composite carbon source for wastewater denitrification and its application in the field of sewage treatment technology. The composite carbon source comprises the following components by weight: 16-18 parts wheat straw, 22-26 parts soybean straw, 8-15 parts rice husk, 12-16 parts corn cobs, 3-4 parts sodium alginate, and 7-9 parts composite shell material. The present invention proposes a method of preparing a mixed carbon source using agricultural waste, achieving waste recycling and reducing product costs. The composite shell material is coated with montmorillonite and corn starch and loaded with zinc ferrite. This provides a good slow-release carbon source while providing chemical reduction sites to further enhance the denitrification effect of the composite carbon source.

The utility model discloses a kind of manganese-zinc ferrite core intelligent heat treatment forming mould, it is related to magnetic core forming mould technical field, including bottom mould and temperature control unit;Bottom mould: top surface and the bottom surface of top mould correspond with and cooperate, the inside of bottom mould is equipped with stripping unit;Temperature control unit: including electromagnetic heater, fixed plate, electromagnetic heating ring, fixed groove and heating ring groove, the inside of bottom mould is opened in heating ring groove, the top surface of bottom mould is opened in fixed groove, heating ring groove is linked with fixed groove, the bottom surface of fixed plate is fixed with electromagnetic heating ring, electromagnetic heating ring is placed in the inside of heating ring groove, this manganese-zinc ferrite core intelligent heat treatment forming mould, accurate temperature control is realized by the intelligent linkage of electromagnetic heating ring and temperature sensor, ensure that manganese-zinc ferrite core is evenly heated, improve magnetic permeability and reduce loss, while electromagnetic heating technology is energy-saving and efficient, prolongs mould life.

The invention relates to the technical field of oxide magnetic material manufacturing, and discloses a preparation method of an ultrahigh magnetic saturation manganese zinc ferrite magnetic core, and the preparation method comprises the following steps: S1, weighing raw materials in parts by mass; s2, mixing and calcining the rare earth oxide and ferric oxide; s3, mixing the rare earth doped precursor with manganese oxide and zinc oxide; s4, coating the main component mixed powder by a sol-gel method; s5, performing microwave irradiation activation on the coated powder, and synchronously applying a pulsed magnetic field to induce orientation; s6, performing compression molding on the activated powder, and then performing staged sintering; and S7, annealing and cooling the sintered green body to obtain the magnetic core. By adopting innovative processes such as calcination treatment of rare earth oxide and ferric oxide, coating by a sol-gel method, microwave irradiation activation and pulsed magnetic field induced orientation, the magnetic saturation intensity and consistency of the magnetic core are remarkably improved, and the problem of non-uniform doping of rare earth in the prior art is solved.

The invention relates to the technical field of harmless disposal of hazardous wastes and comprehensive utilization of resources, in particular to a method for activating inert zinc ferrite in steel-making furnace dust through calcification-chlorination of waste incineration fly ash and volatilizing and enriching zinc, lead, potassium and sodium, which comprises the following steps: S100, carrying out raw material compatibility according to mineral phase composition of the waste incineration fly ash and the steel-making furnace dust to obtain a mixture; s200, the obtained mixture is supplemented with inert gas flow, and the mixture is fed into a high-temperature area to be roasted; s300, after calcification-chlorination composite activation high-temperature roasting, an activated phase rich in zinc, lead, potassium and sodium is generated and brought into a low-temperature area by airflow for desublimation and enrichment; and S400, the obtained enriched phase is subjected to step-by-step deposition enrichment, and zinc, lead and potassium sodium enriched products are obtained. In order to solve the problems that the zinc-containing steel-making furnace dust is difficult to utilize and the generation amount of the waste incineration fly ash is gradually increased over years, the method is provided for activating inert-phase zinc ferrite in the zinc-containing steel-making furnace dust through composite calcification-chlorination of the waste incineration fly ash to obtain a valuable-metal-enriched volatile phase, and step-by-step deposition separation is carried out.

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.

The present invention discloses a novel balanced-unbalanced matching impedance converter device. The device comprises impedance converters with eight impedance conversion ratios, a fixing plate, and a PVC chassis. The impedance converter for each impedance conversion ratio comprises a ferrite core transformer, an input resonant capacitor, an output resonant capacitor, an unbalanced input terminal, a balanced output terminal, a PVC pipe, and a PVC pipe sleeve. The ferrite core transformer is composed of a toroidal core, a primary winding, and a secondary winding. The toroidal core is composed of multiple stacked toroidal manganese-zinc ferrite cores, and the primary and secondary windings are each wound with multiple strands of silver wire. An input resonant capacitor is connected in parallel between the primary windings, and the unbalanced input terminal is an N-type female connector. An output resonant capacitor is connected in parallel between the secondary windings, and the balanced output terminal is a 4mm banana connector. The present invention can achieve eight types of impedance conversion.