67 results about "Basic copper carbonate" patented technology

The invention relates to the field of catalysts, in particular to a preparation method of a green and efficient copper catalyst. Comprising the following steps: (1) mixing basic cupric carbonate, ammonia water and water, adding ammonium salt at the same time, and preparing a copper ammonia solution as a precursor solution at room temperature; (2) mixing the precursor solution with a carrier or a carrier precursor to realize active component loading and catalyst preparation; and (3) filtering, washing, drying and roasting the mixed system in the step (2) to prepare the copper-based catalyst. According to the preparation method of the copper ammonia complexing precursor solution, preparation of the copper ammonia complexing solution at room temperature can be achieved, heating operation in the precursor preparation process is avoided, meanwhile, the nitrogen content of the system and nitrogen emission in the subsequent roasting process can be reduced by preparing the copper-based catalyst through the basic copper carbonate precursor, and efficient and green preparation of the catalyst is achieved.

The invention provides a method for preparing electronic-grade copper oxide by using circuit board acidic etching waste liquid, and belongs to the field of copper resource recovery. The method comprises the following steps: sequentially carrying out impurity removal, concentration crystallization, salt-alkali reaction and cleaning on the circuit board acidic etching waste liquid, and collecting to obtain a copper hydroxide crude product; dissolving and recrystallizing to obtain a copper hydroxide refined product; a carbonized ammonia water solution is added to react with the copper hydroxide refined product, and ammonia cupric carbonate is obtained after adsorption and purification; adding a surfactant and a zinc salt additive, and stirring; drying to obtain modified basic cupric carbonate; carrying out selective etching on the modified basic cupric carbonate by adopting dilute acid to obtain basic cupric carbonate particles; and calcining the basic cupric carbonate particles at 300-500 DEG C to obtain the copper oxide powder with the honeycomb structure. According to the method, on the basis of the basic step of recovering copper resources from the circuit board acidic etching waste liquid, the treatment steps of purification, grain refinement, porous etching and the like are added, so that the purity and the activity performance of a final copper oxide product are improved, and the electronic-grade copper oxide is prepared.

The invention provides a novel mineral separation activating agent for sulphide ores and a preparation method of the novel mineral separation activating agent. The cleaning agent comprises 1-2 parts of basic cupric carbonate, 2-4 parts of ammonium chloride, 2-4 parts of nanometer jade powder, 2-3 parts of alginic acid, 1-2 parts of allyl glycidyl ether, 2-3 parts of peregal O, 2-3 parts of sodium di-sec-octyl maleate sulfonate, 2-3 parts of vinyl acetate, 4-7 parts of hydrogen peroxide, 4-6 parts of disodium hydrogen phosphate and 40-50 parts of water. The preparation method comprises the following steps: firstly mixing basic cupric carbonate and ammonium chloride to obtain a first mixture, then mixing the rest components, heating and stirring to obtain a second mixture, and finally uniformly mixing the first mixture and the second mixture. The activating agent overcomes the defects of a traditional activating agent, has efficient activating performance, can improve the beneficiation efficiency of low-grade, complex and refractory sulfide ore, is environmentally friendly, good in stability and high in adaptability, and provides technical support for efficient development of sulfide ore resources.

The invention discloses an analysis method for determining the content of water-soluble chlorine in basic cupric carbonate. Compared with the prior art, the method has the advantages that by optimizing sample treatment and determination conditions, the determination accuracy and precision are remarkably improved, and meanwhile, the analysis time is shortened. Specifically, a set of sample pretreatment process is customized according to different contents of water-soluble chlorine in a sample, and rapid and accurate chlorine content determination is realized through an improved potentiometric titration technology. According to the method, the detection efficiency is improved, and the reliability of the result is ensured by reducing personal errors. In addition, the analysis speed of the method is 1.5 times higher than that of a traditional method, the accuracy is improved by 30%, and the precision error range is reduced to 5%.

The invention relates to the technical field of etching waste liquid treatment, and provides a nickel-containing etching waste liquid treatment method which comprises the following steps: 1, neutralizing and extracting copper; step 2, nickel deposition; step 3, evaporative crystallization; wherein the step I specifically comprises the following steps: slowly adding sodium bicarbonate into the nickel-containing waste liquid, stirring to adjust the pH value of the waste liquid to weak acidity, preferentially forming a basic cupric carbonate Cu2 (OH) 2CO3 precipitate when Cu < 2 + > is within the pH value range, and stably remaining Ni < 2 + > in the solution, and carrying out operations such as filtering separation and the like; and the step 2 specifically comprises the treatment of adding sodium hydroxide into the nickel-containing filtrate from which most of copper is removed to adjust the pH value to be neutral and the like. According to the technical scheme, the problems that according to an existing nickel-containing etching waste liquid treatment method, the harmless treatment effect is achieved in a chemical precipitation mode, the main purpose is to stabilize solid nickel, although the emission requirement is met, the waste liquid still contains copper, soluble salt and other components, and huge resource waste is caused by direct emission are solved.

The application discloses a preparation method of a high-selectivity hydrogen peroxide production catalytic electrode, and the method comprises the following steps: (1) dissolving a soluble copper salt and a soluble zinc salt in water to prepare a mixed precursor solution containing Cu2+ and Zn2+ with different proportions; (2) adding a precipitant solution to the mixed precursor solution obtained in the step (1) under stirring, controlling the pH range of the reaction system, regulating the local coordination environment, the local electronic structure, especially the microenvironment of the lattice hydroxyl of the basic copper carbonate, and making the system generate a zinc-modified basic copper carbonate precipitate through aging crystallization, and then performing solid-liquid separation, washing and drying treatment to obtain a zinc-modified basic copper carbonate material; and (3) dispersing the zinc-modified basic copper carbonate material obtained in the step (2) into a solvent to form a catalyst slurry, and loading the catalyst slurry on the surface of a conductive substrate, and then performing drying to obtain a supported zinc-modified basic copper carbonate catalytic electrode. The reasonable lattice hydroxyl structure of the obtained material can be used for electrochemical oxidation of water to prepare hydrogen peroxide in a sulfate electrolyte system, and the material has good hydrogen peroxide production capacity and faradic efficiency.

This invention relates to the field of non-ferrous metal smelting technology and discloses a high-recovery, emission-reducing copper anode mud treatment process with controlled potential. Each step employs a controlled potential method to regulate the metal leaching rate and reduction rate, thereby reducing the loss rate of valuable metals in each step and improving the overall metal recovery rate. A sulfidation process is used to treat the antimony-bismuth removal solution, enriching antimony and bismuth in the form of sulfides. An evaporation crystallization method is used to open most of the copper in the anode mud in the form of crude copper sulfate. While enriching antimony and bismuth, the production of basic copper carbonate is significantly reduced, eliminating the "rotary kiln selenium distillation" and "water leaching copper separation" processes, and reducing system acid expansion caused by the "rotary kiln selenium distillation" process. By using the recycled reduction solution and secondary gold separation solution as acid sources for the antimony-bismuth removal process and the primary gold separation solution, the waste acid reuse rate and valuable element recovery rate can be improved. This effectively reduces the total wastewater discharge, simplifies the process flow, and improves the recovery rate of valuable metals.

The invention belongs to the technical field of composite coatings, and particularly relates to a copper-tin electroplating solution and a preparation method and application thereof.The preparation method of the electroplating solution comprises the steps that citric acid is dispersed in water, potassium hydroxide is added, and a reaction solution 1 is obtained; basic cupric carbonate is added into the reaction solution until the solution becomes clear and does not generate bubbles, the solution is cooled, monopotassium phosphate is added, and a reaction solution 2 is obtained; dissolving potassium stannate in a dilute alkali hot solution, and after the potassium stannate is completely dissolved, adding hydrogen peroxide to obtain a reaction solution 3; and adding the cooled reaction liquid 3 into the reaction liquid 2 to obtain the electroplating liquid. The preparation method of the electroplating solution is simple and almost free of pollution, the electroplating solution is used for electroplating a metal test piece, and an obtained plating layer has high corrosion resistance.

Provided is a copper oxide, for which the specific surface area measured by a nitrogen adsorption method is 2.9 m2 / g or more, and the tap density measured in accordance with JIS Z 2512: 2012 is less than 1.1 g / cm3.

The application relates to the technical field of waste copper recovery, and discloses a process for producing special copper oxide by recycling waste copper materials, which comprises the following steps: obtaining copper powder by pretreating waste copper materials, preparing a copper dissolving reagent, introducing Cu 2+ catalyst precursor into the copper dissolving reagent, carrying out a copper dissolving reaction to obtain a copper ammonia solution, continuously introducing air after ammonia is dispersed, carrying out an ammonia evaporation reaction and ammonia absorption by heating, stopping when the solution is green and muddy, carrying out solid-liquid separation to obtain basic copper carbonate solid and a low-concentration copper ammonia solution, washing the basic copper carbonate solid with pure water, calcining again, and grinding to obtain special copper oxide. The Cu element plays a catalytic role in different forms at different stages, and the two problems of slow copper dissolving and poor crystallization are solved systematically without introducing external impurities. Through the synergistic effect of the catalytic mechanism and the accurate process parameters, the high purity, particle size control and special performance of the final copper oxide product are improved, and the special application requirements are met.

To provide an electrochromic material and a method for producing the same, which are used in a coating material that exhibits reversible color change between black and transparent, as well as a coating material and a mixed coating material containing the electrochromic material and methods for producing the same, a color-variable electrode, and an electrochromic device. [Solution] A black electrochromic material that reversibly changes color between black and transparent through an electrochemical redox reaction, comprising one or more nanoparticles selected from the group consisting of copper oxide nanoparticles that are heat-treated products of basic copper carbonate, titanium oxide nanoparticles, titanium nitride nanoparticles, nickel oxide nanoparticles, nickel hydroxide nanoparticles, zirconium oxide nanoparticles, and metallic iridium nanoparticles.

The invention relates to the field of metal catalyst synthesis, and discloses a method for continuously preparing a metal catalyst copper adipate. The method comprises the following steps: S1, processing a heterogeneous mixture of adipic acid and basic cupric carbonate into an emulsion; s2, conveying the emulsified liquid into a tubular reactor, and carrying out an acid-base neutralization reaction; and S3, after the reaction, collecting effluent, cooling to room temperature, then carrying out reduced pressure suction filtration, collecting a filter cake, washing and drying to obtain copper adipate. According to the method for continuously preparing the metal catalyst copper adipate, disclosed by the invention, the emulsified liquid is prepared by utilizing a high-speed shearing emulsifying machine, so that the problem that continuous production of a heterogeneous mixture is difficult to realize is solved; according to the method, the process is strengthened, the reaction time is shortened, the production efficiency is improved, the generation of byproducts is reduced, the product quality is stable, meanwhile, the post-treatment process of the method is simple, the generation of three wastes is reduced, the requirements of a green production process are met, and finally cost reduction and efficiency improvement of a copper adipate product can be realized.

The invention relates to the field of spectral absorption analysis, and provides an analysis method for determining mercury in basic cupric carbonate through hydrochloric acid dissolution, which comprises the following steps: dissolving basic cupric carbonate at low temperature by using hydrochloric acid without reducibility, steaming to 2-3mL, oxidizing mercury in a sample into high-valence mercury by using potassium permanganate, and determining the mercury content in the sample by using hydrochloric acid without reducibility. And completely reducing mercury in the sample into mercury vapor by using stannous chloride, and measuring the mercury content on a cold atomic absorption spectrometer. At present, a standard analysis method for mercury elements in materials such as basic cupric carbonate is lacked in China. Mercury is a harmful substance in the nature, and it is particularly important to analyze whether mercury can be accurately analyzed. The method is improved on the basis of a conventional analysis processing method, adopts single hydrochloric acid to dissolve the sample, and has the characteristics of high measurement precision, wide range, high accuracy, strong practicability and the like.

This invention relates to a deodorant, its preparation method, and its application, belonging to the field of deodorization technology. The invention provides a deodorant preparation method, specifically involving the following steps: a mineral-based deodorizing carrier, anhydrous calcium chloride, magnesium stearate, calcium peroxide, ferrous sulfate, basic copper carbonate, zinc oxide, and mesoporous silica are orderly mixed to obtain a composite powder. This powder is then mixed with a sodium silicate aqueous solution, kneaded, pressed into shape, and cured to obtain a raw blank. The raw blank is then immersed in a composite treatment solution containing silica sol, a silane coupling agent, and nano-titanium dioxide. After removal, it is dried and heat-treated to obtain the deodorant. The deodorant prepared by this invention can be applied to kitchens, bathrooms, and shoe cabinets, exhibiting excellent deodorizing effects.

The invention belongs to the technical field of flue gas purification, and discloses a bifunctional catalyst which is simple in preparation process, excellent in low-temperature catalytic activity, N2 selectivity, sulfur resistance and water resistance and capable of removing CO and NOx at the same time, and a preparation method and application of the bifunctional catalyst. The bifunctional catalyst for simultaneously removing CO and NOx comprises microspheres formed by assembling nano-particles and a shell layer coated on the surfaces of the microspheres, the nanoparticles are mainly composed of Cu, V and O; and the shell layer is mainly made of TiO2. The preparation method of the bifunctional catalyst comprises the following steps: (1) taking basic cupric carbonate and V2O5 as raw materials, and synthesizing Cu3V2O7 (OH) 2.2 H2O microspheres through a hydrothermal method; and (2) synthesizing the bifunctional catalyst by using the Cu3V2O7 (OH) 2.2 H2O microspheres, tetrabutyl titanate and ammonia water as raw materials through a hydrothermal method.

The invention relates to the field of bronze ware, in particular to a bronze ware distressing method which comprises the following steps: S1, cleaning the surface of a bronze ware, uniformly coating the cleaned surface of the bronze ware with an etchant, and standing to obtain an oxidized bronze ware; s2, the surface of the oxidized bronze ware is washed until eluate is clear, then the whole oxidized bronze ware is soaked in a sodium bicarbonate solution for 24 h, the pH is 7.5-8, and the rusted bronze ware is obtained; s3, the rusted bronze ware is washed and dried, and the antique bronze ware is obtained; the corrosion inducing agent is at least one of silver nitrate, copper chloride and aspartic acid. According to the method, the surface of the bronze ware is eroded through the corrosion inducing agent, then the basic carbonate aerugo rust layer is formed on the erosion layer of the bronze ware through sodium bicarbonate induction, and finally the antique bronze ware is obtained through washing and drying, so that the antique effect of the surface of the bronze ware can be achieved within a short time; and uniform distribution of the antique layer on the surface of the bronze ware can be ensured.

The application provides a preparation method and application of a nitrogen-doped activated carbon composite zirconium-metal organic framework material. The zirconium-metal organic framework is compounded with the nitrogen-doped activated carbon, mixed and ground, and the mixed powder is bonded into a form by using a binder to obtain a broad-spectrum adsorption material capable of carrying multiple adsorption sites and synergistically acting on various toxic and harmful gas pollutants; then, the broad-spectrum adsorption material is impregnated and loaded with ammonium bicarbonate, basic copper carbonate, basic zinc carbonate, silver nitrate, ammonium molybdate tetrahydrate and potassium hydroxide by using ammonia water; the nitrogen-doped activated carbon composite zirconium-metal organic framework material has good protection capability for benzene, chloroethane, hydrocyanic acid, cyanogen chloride, sulfur dioxide, hydrogen sulfide and ammonia gas.

The invention relates to the technical field of protective materials, in particular to high-humidity-resistant multispectral protective carbon and a preparation method thereof. The preparation raw materials of the high-humidity-resistant multispectral protective carbon comprise the following components in parts by weight: 30-50 parts of an activated carbon composite carrier, 6-10 parts of basic cupric carbonate, 3-5 parts of basic zinc carbonate, 3-5 parts of ferrous sulfate and 3-5 parts of cobalt nitrate. The high-humidity-resistant multi-spectrum protective carbon is prepared by dipping an activated carbon composite carrier into metal salt, so that various toxic gases such as benzene, ammonia gas, hydrogen sulfide, sulfur dioxide, cyanogen chloride and phosgene are efficiently removed, and excellent protective performance is still kept in a high-humidity environment.

The invention relates to micro-nano silver coated copper conductive powder and a preparation method and application thereof.The preparation method comprises the steps that carbon dioxide serves as an acid-base regulator to dynamically regulate and control the precipitation and separation process of a copper precursor to obtain a basic copper carbonate carrier material, and basic copper carbonate loaded silver carbonate precipitate is obtained through cation exchange of a silver source; and carrying out chemical reduction, solid-liquid separation, washing and drying to obtain the micro-nano silver coated copper conductive powder. Compared with the prior art, the method is based on the acidity and precipitation effects of CO2, operation is easy, green and environment-friendly, and the prepared micro-nano silver-coated copper conductive powder is narrow in particle size distribution, high in conductivity, low in silver content and good in stability.

The application discloses a targeted drug for treating glioma and a preparation method and application thereof. Alkaline copper carbonate, dopamine hydrochloride and ammonia water are mixed and dissolved, then defatted cotton is added, stirring is conducted until the defatted cotton is dissolved, and copper ammonia fiber solution is obtained by reaction at room temperature; a mixed solution of soluble copper ion salt, zinc ion salt and cobalt ion salt is prepared as a metal ion acid bath solution; the copper ammonia fiber solution is slowly injected into the metal ion acid bath solution, stirring reaction is completed, and then centrifugal separation is conducted; the obtained precipitate is added into a temozolomide solution, ultrasonic treatment is conducted under ice bath, and then centrifugal separation is conducted to obtain a precipitate; the precipitate is washed and freeze-dried to obtain polydopamine modified temozolomide adsorbed copper ammonia fiber; finally, the obtained polydopamine modified temozolomide adsorbed copper ammonia fiber is added into phosphate buffer solution containing Anti-ATRX antibody for incubation, and then washing, freeze-drying and grinding are conducted to obtain the product.

The invention discloses a micro-smoke reducing agent suitable for spraying fireworks and cold light fireworks. The micro-smoke reducing agent is prepared from the following raw material components in parts by weight: 25-35 parts of plant fiber powder, 18-22 parts of carbon powder, 15-25 parts of cationic modified starch, 19-22 parts of ferrocene and 8-12 parts of basic cupric carbonate. The raw materials are mixed according to a general method, and the raw materials are respectively crushed or mixed and crushed until the granularity is not greater than 200 meshes. The safety can be effectively improved, and the production cost is reduced.

The invention relates to the technical field of industrial waste gas treatment, and particularly discloses composite desulfurization powder for industrial kiln waste gas desulfurization and a preparation method thereof. The composite desulfurization powder is prepared from the following raw materials in parts by weight: 78-85 parts of sodium bicarbonate, 10-15 parts of sodium percarbonate, 3-5 parts of adipic acid and 1-3 parts of basic cupric carbonate. Experimental results show that under the same conditions, the desulfurization efficiency of the composite desulfurization powder is improved by about 10% compared with that of single sodium bicarbonate, the sodium alkali utilization rate is improved by 30% or above, the whole-process operation cost of materials, transportation and waste residue treatment is directly reduced, and the composite desulfurization powder is particularly suitable for complex waste gas conditions with high requirements for desulfurization efficiency and large working condition fluctuation.

The invention provides a preparation method of electronic-grade copper oxide powder, and relates to the technical field of copper oxide. According to the method, the barium carbonate is adopted to precipitate the copper sulfate solution, the obtained mixed solid is dissolved by the ammonia water and then is separated into the solid and the copper ammonia complex solution, the copper ammonia complex solution is heated and decomposed into basic copper carbonate, the basic copper carbonate is calcined to obtain the copper oxide powder with high purity and high activity, and the content of metal impurities is very low.

The invention relates to the technical field of basic cupric carbonate drying devices, in particular to a basic cupric carbonate low-temperature thermal crystallization material drying integrated device. Comprising a base frame and further comprises a conveying shaft barrel rotationally installed on the base frame, a centrifugal conical disc is fixedly installed on the upper portion of the conveying shaft barrel, spraying outer holes are formed in the position, corresponding to the lower portion of the centrifugal conical disc, of the peripheral face of the conveying shaft barrel in an array mode, circulating discharging ports are formed in the upper portion of the conveying shaft barrel in an array mode, and circulating returning ports are formed in the lower portion of the conveying shaft barrel in an array mode; a first shock excitation unit for driving the material vibrating frame to periodically vibrate in a variable amplitude mode is arranged between the material vibrating frame and the material vibrating frame, a spraying shaft pipe is rotationally installed on the material vibrating frame, and spraying inner holes are formed in the periphery of the spraying shaft pipe in an array mode. The device has the beneficial effects that through the centrifugal material throwing structure of the centrifugal conical disc, the hot air gradient drying system with the inner and outer double jet holes and the reverse rotation cooperation of the spiral conveying blade and the conveying shaft barrel, the initial state that materials are fed, namely caking is broken through.

This invention discloses an ecological slow-release algaecide and its preparation method, relating to the field of water treatment technology. The algaecide comprises 30%-50% copper oxychloride, 5%-50% basic copper carbonate, 5%-50% copper hydroxide, 5%-50% copper oxalate, 8%-12% copper sulfate pentahydrate, 2%-8% calcium sulfate dihydrate, 2%-8% oxalic acid dihydrate, 9%-18% pregelatinized starch, and 1.5%-2% magnesium stearate. The preparation method includes: weighing and mixing the components; pulverizing the mixed powder, sieving, and drying in an oven; and pressing the dried powder into tablets. This invention features a simple preparation process and low raw material costs. The algaecide of this invention has stable and long-lasting release, effectively reducing the frequency of algaecide application, and ensuring that the copper ion concentration in the water does not exceed the standard, greatly reducing the risk of water pollution caused by excessive algaecide application, while also reducing the labor costs associated with long-term algaecide application.

The present invention discloses a preparation method and application of double-coated silicon carbide particles, comprising: performing surface roughening treatment on silicon carbide particles, drying to obtain roughened silicon carbide particles, adding a dispersant, ball-milling to obtain a uniformly mixed powder, and obtaining SiC powder particles coated with Ti5Si3 / Ti through a vacuum diffusion plating process; dissolving basic copper carbonate into an ammonia solution, stirring and fully dissolving, adding polyacrylamide, mixing evenly, adding SiC powder particles coated with Ti5Si3 / Ti, sealing and keeping still, and obtaining fully coated silicon carbide particles; heating and reducing the preliminarily coated silicon carbide powder in a hydrogen reducing atmosphere, cooling and sieving to obtain double-coated particles. The present invention proposes for the first time a double-coated Cu‑Ti5Si3 / Ti‑SiC powder particle, which significantly improves defects such as holes and gaps formed in the composite material during the hot pressing and sintering process when preparing silicon carbide particle-reinforced aluminum-based composite material by powder metallurgy hot pressing and sintering, and has good interface bonding.

This invention discloses a method for producing copper oxide nanosheets from PCB acidic etching solutions, belonging to the field of PCB acidic etching solution treatment technology. This invention uses a reducing agent to react with acidic waste etching solution for precipitation. During the precipitation process, by controlling the pH, the content of hydroxide-type alkalis, and carbonate-type alkalis, copper ions can first be converted into cuprous chloride and basic copper carbonate intermediates before decomposing into copper oxide nanosheets. The process of this invention is simple, low-cost, and can produce high-purity copper oxide nanosheets from PCB acidic waste etching solution without high-temperature calcination. The provided method is applicable to copper plating, energy storage, solar cells, and chemical catalysts in the electronics industry.

The present invention relates to a method for ultra-fast preparation of nano needle-shaped basic copper-nickel carbonate supercapacitor electrode materials. Water-soluble copper compounds and urea are used as basic raw materials, and water-soluble nickel compounds are used as promoters. First, a Cu-containing 0.01-0.50 mol / L 2+ , 0.01~0.50mol / L Ni 2+ A solution containing 0.2-0.5 mol / L urea is prepared; the solution is then transferred to a reactor. The reactor is kept at 105-135°C for 30-60 minutes to produce single-crystal needle-shaped basic copper-nickel carbonate with a specific capacitance exceeding 2300 F / g. This method features a fast hydrothermal reaction and a short cycle time of less than 1 hour. The resulting nano-needle-shaped basic copper-nickel carbonate exhibits ultra-high specific capacitance.

The utility model relates to the technical field of basic cupric carbonate drying, and discloses a standby quick drying device for basic cupric carbonate, which comprises an outer box body and supporting seats, the supporting seats are fixedly connected to the four corners of the bottom end of the outer box body, the bottom ends of the supporting seats are fixedly connected with a bottom frame, and the outer box body is fixedly connected with the bottom frame. A first reserved groove is formed in the front end of the bottom frame, a filtering frame is placed in the first reserved groove, and a first handle is fixedly connected to the front end of the filtering frame. According to the quick drying device for preparing the basic copper carbonate for standby use, the bottom frame, the first reserved groove, the filtering frame, the first handle and the opening valve are arranged, dried copper carbonate can be fed into the filtering frame through a discharging pipe, non-dried caked copper carbonate is conveniently filtered through a filtering net plate in the filtering frame, feeding and drying are facilitated, and the drying efficiency is improved. And the problems that filtering is not convenient after discharging, and caking copper carbonate which is not dried is likely to be mixed into the interior are solved.