26results about "Copper chlorides" patented technology

The invention discloses a method for resource utilization of copper-containing waste etching liquid and production of high-purity copper hydroxide, and belongs to the field of green cyclic recycling of copper-containing waste liquid. The method for preparing the high-purity copper hydroxide by using the copper-containing etching waste liquid comprises the following steps: mixing the copper-containing etching waste liquid with a crystal form inducer solution, adjusting the pH value to 3.0-8.0, then reacting, carrying out solid-liquid separation to obtain a solid-phase separated substance and filtrate, and carrying out aging treatment on the solid-phase separated substance to obtain a basic copper chloride precipitate; and adding ammonia water and a crystal form transforming agent into the basic copper chloride precipitate, then carrying out aging treatment, and carrying out solid-liquid separation to obtain the high-purity copper hydroxide powder. The prepared copper chloride hydroxide and copper hydroxide powder are large in particle size, the average particle size of the copper chloride hydroxide collection substance is 20-200 microns, and the average particle size of the copper hydroxide powder is 10-100 microns.

Compositions comprising high levels of high specific activity copper-64, and process for preparing said compositions. The compositions comprise from about 2 Ci to about 15 Ci of copper-64 and have specific activities up to about 3800 mCi copper-64 per microgram of copper. The processes for preparing said compositions comprise bombarding a nickel-64 target with a low energy, high current proton beam, and purifying the copper-64 from other metals by a process comprising ion exchange chromatography or a process comprising a combination of extraction chromatography and ion exchange chromatography.

Compositions comprising high levels of high specific activity copper-64, and process for preparing said compositions. The compositions comprise from about 2 Ci to about 15 Ci of copper-64 and have specific activities up to about 3800 mCi copper-64 per microgram of copper. The processes for preparing said compositions comprise bombarding a nickel-64 target with a low energy, high current proton beam, and purifying the copper-64 from other metals by a process comprising ion exchange chromatography or a process comprising a combination of extraction chromatography and ion exchange chromatography.

The invention relates to the technical field of basic copper chloride production, and discloses a device for producing basic copper chloride by recovering circuit board etching waste liquid, the device comprises a supporting box, the top of the supporting box is provided with a reaction kettle assembly, and the top of the supporting box is provided with an air heater, a supporting frame and a first weighing unit; a storage barrel assembly is arranged on the top of the supporting frame, and a driving motor is installed on the outer wall of the supporting box. The solution is added into the storage barrel main body, and the etching waste liquid is added into the reaction kettle main body at the same time, so that the control center monitors the weight in the reaction kettle main body through the first weighing unit, and calculates the weight of the required solution; and meanwhile, the control center detects the weight of the solution in the storage barrel assembly in real time through a second weighing unit, at the moment, a piston plate is sealed through a sealing plug, then an electromagnetic valve is opened, a servo motor is started, the servo motor drives a stud to rotate, and the stud drives a threaded sleeve to descend at a constant speed.

The invention discloses a method for treating chloride ions in a lithium precipitation mother liquor concentrated solution, which comprises the following steps: adding copper sulfate into an acid-regulated lithium precipitation mother liquor concentrated solution for reaction to obtain a copper chloride-containing lithium precipitation mother liquor concentrated solution; regulating the pH value of the lithium precipitation mother liquor concentrated solution, adding sodium sulfite to precipitate copper chloride in the form of cuprous chloride, and separating to obtain cuprous chloride precipitate and lithium precipitation feed liquid containing residual chlorine and bivalent copper; further concentrating the lithium precipitation feed liquid containing residual chlorine and bivalent copper to obtain concentrated feed liquid; and finally, regulating and controlling the pH value of the concentrated feed liquid, adding sodium sulfite into the concentrated feed liquid to reduce residual bivalent copper into monovalent copper, and adding cuprous chloride precipitate as a guide seed crystal to deeply remove residual chlorine and copper so as to obtain a lithium precipitation liquid.

The application relates to a preparation method and application of a two-phase basic copper chloride heterojunction material. A phosphate is dissolved in deionized water to obtain solution A; copper acetate is dispersed in deionized water to obtain solution B; a chloride is added into the solution B to obtain a mixed solution C; the solution A is placed in an open container, the solution C is sprayed into the solution A in a static state, and a flocculent insoluble precursor is generated; the precursor is transferred into a container for ripening, so that the floating flocculent material is changed into a precipitate; after the ripening is completed and the temperature is lowered to room temperature, the obtained product is separated, washed and dried, and the two-phase basic copper chloride heterojunction material is obtained. The two-phase basic copper chloride heterojunction material prepared by the application is composed of two homologous basic copper chlorides, and simultaneously, there are different metal element dopings or different metal compound compounding in the inside.

The application provides a resource utilization method of scrapped filtering resin for power supply rectifier unit, and belongs to the technical field of filtering resin recovery. 2+ The application can elute the cations (Cu 2+ ) adsorbed on the resin, restore the scrapped filtering resin to the initial state, evaporate and crystallize the eluate, and obtain copper chloride as an industrial drying agent; in the pickling process, the resin bed contains excessive acid, the acid-base neutralization reaction can be carried out by alkali washing, the filtering resin is regenerated, and then is used for soft water preparation, so that the resource utilization of the resin and the cations in the scrapped filtering resin is realized.

A raspberry-like basic copper chloride nanomaterial with dual enzymatic activity, its preparation method, and its application are disclosed. The steps are as follows: Dimethyl sulfoxide is added to an aqueous sodium hydroxide solution containing N-fluorenemethoxycarbonyl-L-arginine (Fmoc-L-Arg), and the solution is sonicated until clear to obtain mixed solution A. An aqueous solution of copper chloride dihydrate (CuCl2·2H2O) is prepared for later use. The CuCl2·2H2O aqueous solution is added to mixed solution A to obtain mixed solution B, and the reaction is allowed to stand. After the reaction is complete, the precipitate is collected by centrifugation and washed with water. This invention employs a biomimetic mineralization method, using Fmoc-L-Arg molecules as templates to guide and control the formation of uniformly sized (130 nm) Cu2(OH)3Cl nanomaterials. These nanomaterials simultaneously possess dual enzymatic activities similar to peroxidase and glutathione oxidase, exhibiting good biocompatibility and enabling specific killing of tumor cells.

This application provides a spherical basic copper chloride and its preparation method. The preparation method includes: mixing seed crystals and water uniformly to obtain a seed crystal dispersion; the seed crystals include hydrochloric acid-catalyzed basic copper chloride; adding purified acidic copper-containing etching waste liquid, ammonia, and a stabilizer to the seed crystal dispersion to obtain a mixed reactant with a pH value of 4-5.5; heating the mixed reactant at a temperature of 40-80°C and stirring at a stirring speed of 100-200 r / min; separating the reactants after the reaction, collecting the solid material, and drying it to obtain the spherical basic copper chloride. In this application, during the crystal growth process, the reaction temperature is controlled to control the growth rate of the seed crystals, and the stirring speed is controlled to control the morphology of the crystals, thereby controlling the growth of the crystals to obtain spherical basic copper chloride. Furthermore, the continuous stirring process grinds the crystal surface, strengthening the structural strength of the crystals, resulting in a final crystal with a smooth surface and good overall structural stability.

A micronutrient supplement which is made by reacting together copper metal and either hydrochloric acid or cupric chloride under oxidizing conditions.

The utility model relates to the technical field of feed production equipment, in particular to a cuprous chloride production mixing tank which comprises a smashing shell, a feeding groove is formed in the top of the smashing shell and communicated with the smashing shell, and the smashing shell is rotationally connected with a first smashing shaft and a second smashing shaft. The first smashing shaft is provided with first smashing teeth, the second smashing shaft is provided with second smashing teeth, the first smashing teeth and the second smashing teeth are arranged in a staggered mode, the first smashing shaft is provided with a first gear, the second smashing shaft is provided with a second gear, a motor support is arranged on one side of the smashing shell, and a first motor is fixed to the motor support. A power output shaft of the motor I is fixedly connected with a gear III, and the gear III is meshed with the gear I. The spiral teeth are spirally wound on the outer ring of the spiral shaft, cuprous chloride raw materials fall into the stirring and mixing shell through the screen, and the spiral teeth rotate to convey raw material waste materials in the discharging bin to the slag discharging opening.

The invention relates to a synthesis process for improving the particle uniformity of basic copper chloride, which comprises the following steps: firstly, adding sodium citrate, EDTA-2Na or a compound solution of the sodium citrate and the EDTA-2Na into an acidic etching solution as a crystallization regulating agent to form a reversible complex with Cu < 2 + >; then, adding the pretreated acidic liquid and alkaline liquid into a reactor in a constant proportion at the same time at a constant speed in a parallel flow manner, and carrying out a precipitation reaction at a temperature interval of 60-80 DEG C and a pH value interval of 4.0-4.8; according to the method, the concentration of free copper ions is buffered through the regulating agent, explosive nucleation is inhibited, and a reaction system is kept stable in combination with parallel flow feeding, so that a uniform and controllable crystallization process is guided. The obtained copper chloride hydroxide product has the excellent characteristics of narrow particle size distribution, regular morphology, high tap density and good fluidity, and the product quality and application performance are remarkably improved.

The invention relates to the field of organic silicon, and provides an organic silicon slurry residue recovery treatment process which comprises the following steps: S11, gas pretreatment: pretreating a mixed gas of hydrogen chloride and chlorine to obtain a prepared mixed gas, and collecting the mixed gas of hydrogen chloride and chlorine from a process of preparing white carbon black from methyl trichlorosilane; s21, leaching reaction: carrying out hydrolysis treatment on the organic silicon slurry slag to obtain copper-containing silicon slag, blending the copper-containing silicon slag and water to obtain slurry, introducing the prepared mixed gas into the slurry to carry out leaching reaction, controlling the temperature of the leaching reaction to be 60-80 DEG C and the solid content of the slurry of the leaching reaction to be 15-30%, and separating to obtain copper-containing leachate; s31, grading treatment is conducted, specifically, copper ion concentration detection is conducted on the copper-containing leachate, and grading treatment is conducted at the same time; according to the process, cooperative treatment and resource utilization of the waste gas and the slurry residues are achieved, and a copper product with the higher additional value is obtained.

The invention relates to an unconventional valence metal compound composite material as well as a preparation method and application thereof, and solves the problems that the number of current unconventional valence systems is limited, the preparation method is relatively complicated, and protection conditions needing to be utilized for maintaining the unconventional valence are relatively harsh. The unconventional valence metal compound composite material is a composite functional material which takes a multi-layer reduced graphene oxide film as a main body and an unconventional valence compound which is self-filled into the reduced graphene oxide film as an object.

The invention relates to a metal extraction agent and to a method for extracting metals and / or metal-containing compounds from liquids. The invention may be used, for example, for the removal of metals from electroplating baths, electroplating wastewaters, fuels such as petrol and diesel, cyanide solutions (and other solutions) used in gold mines and in mining operations for metal recovery, crude oil, wastewaters from the dye industry and chemical industry, and for environmental remediation, and in particular for the recovery of raw materials (e.g. gold, silver, uranium) from oceans, rivers and hot springs worldwide.

The invention discloses a preparation method of an all-solid-state battery positive electrode material, relates to the technical field of all-solid-state batteries, and aims to solve the problem of insufficient activity of a copper chloride positive electrode material in the prior art. The preparation method comprises the following steps: 1) placing oxygen-free copper in diluted hydrochloric acid with a mass concentration of (2.5-4) * 10 <-4 > g / ml, and carrying out a cold reaction for 1-3 months at a temperature of 20-27 DEG C and a humidity of 65-75% to obtain a copper chloride solution with activity; 2) drying the copper chloride solution in a drying oven at the temperature of 75-85 DEG C to obtain anhydrous copper chloride powder; and 3) grinding and screening the anhydrous copper chloride powder to obtain the nanoscale copper chloride powder. The nano-scale copper chloride powder prepared by the method has high activity, and can significantly improve the specific discharge capacity of the battery when being used as the positive electrode material of the all-solid-state battery, thereby improving the overall performance of the battery.

The utility model relates to a device for preparing basic copper chloride and ammonium chloride by utilizing circuit board etching waste liquid, which comprises an acidic etching waste liquid storage device and an alkaline etching waste liquid storage device which are respectively connected with a corresponding acidic etching waste liquid filter and an alkaline etching waste liquid filter. The acidic waste etching liquid filter and the alkaline waste etching liquid filter are respectively connected with the reaction kettle, the reaction kettle is connected with the centrifugal machine, the centrifugal machine is respectively connected with the vacuum drying box and the ion exchange resin tank, the ion exchange resin tank is connected with the dilute acid tank, and the ion exchange resin tank and the electrolytic tank form a circulating pipeline. The ion exchange resin tank is also sequentially connected with an evaporation concentration kettle, a crystallization cooling tank and a filter through pipelines, and the filter is respectively connected with an ammonium chloride tank and the reaction kettle. According to the device for preparing the basic copper chloride and the ammonium chloride by utilizing the circuit board etching waste liquid, the effective components of the etching waste liquid are fully recycled, the utilization rate of the waste liquid is high, resource waste is avoided, and secondary pollution is avoided.

This invention relates to a self-supported nanocatalyst for the electroreduction of CO2 to ethylene, its preparation, and its application. The catalyst uses copper foil as a substrate, and the catalytically active material is obtained through in-situ growth using a wet chemical method. The catalytically active material is cuprous chloride nanoclusters. The catalyst preparation includes: acid washing of the copper foil to remove surface impurities and oxide layers; immersing the acid-washed copper foil in an acidic copper chloride solution for in-situ growth; cleaning the in-situ grown copper foil; and then vacuum drying under an inert atmosphere. The catalyst application includes using the catalyst as the working electrode to catalyze the electroreduction of CO2 to ethylene via constant-potential electrolysis. The cuprous chloride nanoclusters grown in situ on the copper foil surface of this invention provide effective charge transfer channels, accelerate electron transfer, promote mass-electron coupling on the catalyst surface, and facilitate the specific adsorption of intermediates during electrolysis, thus efficiently catalyzing the electroreduction of CO2 to ethylene.

The application relates to a preparation process for recovering cuprous chloride from copper-containing etching solution, which comprises the following steps: S1, mixing the copper-containing etching solution with an extractant to perform extraction, and collecting a copper-containing organic phase through liquid separation; S2, back-extracting the copper-containing organic phase collected in the step S1 with hydrochloric acid, collecting a back-extraction liquid and a raffinate through liquid separation; S3, adding sodium sulfite into the back-extraction liquid collected in the step S2 to generate a cuprous chloride precipitate through reaction, collecting a cuprous chloride crude product and a filtrate through solid-liquid separation; S4, washing the cuprous chloride crude product collected in the step S3 with ethanol, and obtaining a cuprous chloride product after washing; and S5, adding liquid alkali into the filtrate collected in the step S3 to make residual copper ions precipitate, filtering and collecting the solid, dissolving the solid with copper-containing etching solution, and then entering the step S1 for reaction and utilization. Through the whole-process system of "extraction-back extraction-reduction-purification-residual liquid closed loop recycling", the application realizes efficient enrichment and extreme recovery of copper resources.

The utility model relates to an acidic copper-containing etching waste liquid and waste alkali synergistic recovery treatment system which comprises an acidic copper-containing etching waste liquid collecting tank and a reaction kettle which are sequentially connected, the reaction kettle is respectively connected with an absorption tower and a first centrifugal machine, and the first centrifugal machine is sequentially connected with a washing machine, a second centrifugal machine and a dryer. The first centrifugal machine is further sequentially connected with a waste liquid transfer tank, a membrane concentrator and an evaporation concentrator through pipelines, and the membrane concentrator is further connected with the reaction kettle; the recovery treatment system further comprises a waste alkali collecting tank, an outlet of the waste alkali collecting tank is connected with an inlet of a neutralizing tank through an oil remover, another inlet of the neutralizing tank is connected with a second centrifugal machine, and an outlet of the neutralizing tank is sequentially connected with an ion exchanger and a membrane concentrator. The acidic copper-containing etching waste liquid and waste alkali collaborative recovery treatment system has the advantages of high treatment efficiency, strong controllability, low cost and no waste water, can recover cuprous chloride, sodium chloride and pure water at the same time, enables resources to be reasonably utilized, and has environmental protection benefits and economic benefits.

The invention relates to an anti-caking synthesis process of basic copper chloride, which comprises the following steps: by taking acidic etching waste liquid and alkaline etching waste liquid as raw materials, carrying out neutralization precipitation reaction by controlling pH and temperature; a dispersing agent / surfactant is added in the precipitation reaction stage to inhibit crystal agglomeration and regulate the morphology; a washing coating agent is applied to a wet filter cake stage after solid-liquid separation so as to isolate particles, and hard connection is prevented from being formed during drying; and an anti-caking agent is added into the dried finished product to further guarantee the flowability. Through the three-step method anti-caking synergistic treatment, the technical problem that the basic copper chloride product is easy to cake is solved from the source, the prepared product is good in fluidity and high in storage stability, and meanwhile resource utilization of the etching waste liquid is achieved.

The invention discloses a method and a system for recovering zinc dross by a wet process, and relates to the technical field of metallurgy, and the method comprises the following steps: (1) adding the zinc dross into acid liquor, leaching, and carrying out liquid-solid separation to obtain zinc-containing leachate and impurities; and (2) adding copper slag into the zinc-containing leaching solution for dechlorination, and carrying out liquid-solid separation to obtain a zinc dross leaching dechlorination solution and a chlorine-containing precipitate. The method provided by the invention not only can solve the problem of waste of zinc metal caused by conveying the zinc scum undersize dust to a lead factory, but also can solve the potential safety hazards of corrosion of a lead system furnace lining, structural damage and the like caused by Cl <->; in the treatment process, temperature control is not needed, the utilized waste liquid is the waste electrolyte produced through electrolysis, concentrated sulfuric acid does not need to be added, and adding of redundant SO4 < 2-> ions is avoided; a proper liquid-solid ratio is controlled in the leaching process, so that the leaching rate is ensured, and the zinc dross can be recycled in a non-slag manner; and the self-produced copper slag is used as a dechlorination raw material, and no new material is added, so that new impurity elements are prevented from being brought into the system.

The present application belongs to the field of industrial acid wastewater treatment and resource, and relates to a method for efficiently removing chlorine ions in waste acid by using cuprous chloride precipitation method under high acidity. In order to overcome the shortcomings of long reaction time, large amount of divalent copper used, and poor dechlorination effect caused by weak reduction capacity of the partial reducing agent in the high acid (low pH) environment in the traditional cuprous chloride method dechlorination technology, the present application provides a method for efficiently removing chlorine ions in waste acid by using cuprous chloride precipitation method under high acidity, which has short reaction time, low amount of divalent copper used and no copper powder used, is suitable for acid waste acid wastewater including pH < 0 and pH = 0-7 (wide application range), the removal effect can reach more than 97%, and can be reused in industrial flue gas pollutant elution process.

The application discloses a purification method of anhydrous copper chloride, which comprises the following steps: mixing industrial basic copper chloride and hydrochloric acid, wherein the mass ratio of the industrial basic copper chloride to hydrogen chloride in the hydrochloric acid is (1.2-3):1, to prepare a first mixed solution; mixing a pH regulator, a relative density regulator and the first mixed solution to prepare a second mixed solution, wherein the pH value of the second mixed solution is 0.5-2.2, and the relative density of the second mixed solution is 1-1.4; mixing the second mixed solution and a decontaminant, adding a pH regulator to prepare a third mixed solution; mixing the third mixed solution and an adsorbent, removing precipitates, adding a pH regulator to prepare a fourth mixed solution; concentrating the fourth mixed solution until solid is precipitated, separating the solid and drying the solid. The pH value and the relative density of the mixture after the reaction of the basic copper chloride and the hydrochloric acid are limited, the reaction is promoted, and the impurity separation is facilitated; the soluble impurities in the precipitate are removed by using the decontaminant, various impurities are removed by using the adsorbent, and high-purity anhydrous copper chloride is obtained.

The invention provides an intelligent cuprous chloride production system, and belongs to the technical field of cuprous chloride production, the outer part of a bin body is fixedly connected with a placement frame, a detachable bin cover is arranged at the upper part of the bin body, an opening is formed in the bottom of the bin body, and a discharging assembly is arranged below the opening. The stirring assembly is driven by a power device and comprises a first stirring piece, second stirring pieces and a third stirring piece, the first stirring piece and the third stirring piece are located at the two ends, a plurality of second stirring pieces are arranged between the first stirring piece and the third stirring piece, the first stirring piece and the second stirring pieces are fixed together through connecting pieces, and the second stirring pieces and the third stirring pieces are fixed together through connecting pieces. Communicated inner pipes are arranged in the first stirring part, the second stirring part and the third stirring part, communicating holes are formed in the inner pipes, inner cavities of the inner pipes are communicated with an inner cavity of the outer pipe through the communicating holes, stirring pipes are further arranged on the first stirring part, the second stirring part and the third stirring part, and air holes are formed in the stirring pipes.

This invention discloses a method for preparing high-purity copper salt from analytical grade copper salt, belonging to the field of high-purity inorganic chemical preparation and fine purification technology. The method includes the following steps: (1) preparing a high-concentration stock solution; (2) fractional dilution treatment; (3) selective adsorption treatment; (4) fractional recrystallization; and (5) washing and drying treatment. This invention prepares high-purity copper salt with a total metal impurity content of less than 20 ppm and a purity higher than 99.99% through selective complexation-adsorption with an oxygen donor-containing adsorbent material and fractional recrystallization. This invention is applicable to the preparation of high-purity copper sulfate, copper chloride, copper nitrate, and other products.