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966 results about "Copper chloride" patented technology

Copper forms two stable chlorides: Copper chloride, CuCl, mineral name nantokite. Copper chloride, CuCl₂, mineral name eriochalcite.

Method for producing basic copper chloride, cupric sulfate pentahydrate from copper-containing etching waste liquid

The invention relates to a method for producing copper chloride hydroxide and blue vitriod by using cupriferous etching wastewater; the method comprises the following steps: acidic copper chloride etching wastewater and alkaline copper chloride etching wastewater are neutralized and crystallized to get acidic copper chloride crystal under the condition of strictly controlling filling liquid and the Ph range of a reaction kettle, and then pumped and filtrated, and centrifugated; part of the obtained alkaline copper chloride crystal is dried to obtain finished products while the other is added with NaOH solution for alkali conversion to obtain copper oxide, and then is acidulated by sulphuric acid, crystallized, washed, centrifugated, and dried to obtain blue vitriod products. The method for producing blue vitriod by directly using sulphuric acid-oxyful etching wastewater includes the following steps: sulphuric acid-oxyful etching wastewater and composition brass wasterwater in a PCB manufacture are blended together and added with NaOH to form cupric hydroxide precipitation which filtrated, washed, and then acidulated by sulphuric acid to obtain copper sulphate solution; after the copper sulphate solution is cooled, crystallized, centrifugated and dried, and the blue vitriod is obtained.
Owner:HUIZHOU DONGJIANG ENVIRONMENTAL PROTECTION TECH

Process for manufacturing 12OZ thick copper multilayer circuit board

The invention discloses a process for manufacturing a 12OZ thick copper multilayer circuit board. In an inner layer etching process, the concentration of CU2+ in an acid copper chloride etching solution is controlled to be 150+/-20g/l, the temperature is 50+/-3 DEG C, total acidity is 2.8+/-0.6N, specific gravity is 1.30+/-0.10, etching speed is 1.2+/-m/min, and the number of etching times is 4 times; a plate pressing process comprises a hot pressing step and a cold pressing step, wherein the hot pressing time is 200 minutes, a system is vaccumized at absolute pressure of 10mbar between the fifth minute and the ninety-fifth minutes, the maximum press plate pressure is controlled to be 21.42Kgf/cm2, and the temperature is 190 DEG C; the time for cold pressing is 110 minutes, and the maximum press plate pressure is controlled to be 18.36Kgf/cm2; when the diameter D of a prebored hole is more than or equal to 2.0mm and is less than 4.8mm, a drill bit with diameter d of less than or equal to 1.7mm is used to prebore 4 holes, and the holes are redrilled by using a drill bit with the diameter D. The process has the advantages of improving the etching factors of the plate material of the inner layer, reducing the side etching effect with good plate pressing effect and protecting the bored holes from the phenomenon that the holes are blocked by copper scarp.
Owner:KALEX MULTI LAYER CIRCUIT BOARD (ZHONGSHAN) CO LTD

Method for recovery processing of ammonia nitrogen from printed circuit board waste liquid

The invention relates to a method for recycling ammonian in ammonian waste water with high concentration, in particular to a method for recycling ammonian in printed wiring board waste water; crystallization mother liquid containing ammonium chloride with high concentration which is generated from processes such as producing alkaline copper chloride, Alpha crystallization type alkaline copper, blue vitriod and the like by using wiring board etching waster water, firstly is evaporated, concentrated and crystallized by one or two combination in multiple effect evaporation technique of mechanical compression, evaporating and compression with heat so as to recycle most ammonium chloride; secondly, Ph is adjusted and ammonian is evaporated so as to recycle ammonia or ammonium sulphate; ammonian waste water generated from removing tin water from ammonia and recycling tin mud are treated by evaporating ammoniac after directly adjusting Ph; and the residual sewage is further treated in the sewage treatment system. By using the method, both of the removal rates of ammonian waste water for wiring board and the recovery rate of ammonia are more than 99.8 percent; the method has good treatment effect, high efficiency, little amount of steam usage, low running cost, and good popularization and application prospect.
Owner:深圳市宝安东江环保技术有限公司

Corrosive capable of displaying ultra low carbon steel solidification arborescent structure and preparation method thereof

The invention discloses a corrosive capable of displaying an ultra low carbon solidification arborescent structure and a preparation method thereof. The corrosive is prepared from the following components: picric acid, stannous chloride, copper chloride, hydrochloric acid, surfactant, absolute ethyl alcohol and distilled water. The preparation method is as follows: taking a specified amount of the distilled water, and equally dividing the distilled water into two parts; mixing and putting solid medicament into a glass container according to fixed quantity, and adding one part of the distilledwater into the solid mixed medicament to dissolve the medicament; adding a specified amount of the absolute ethyl alcohol into another part of spare distilled water; adding a hydrochloric acid solution into the absolute ethyl alcohol solution; mixing the ethyl alcohol and the hydrochloric acid solution which are poured into an aqueous solution containing the solid medicament; fully stirring; and finally adding the surfactant to finish preparing. By utilizing the reagent provided by the invention, the solidified arborescent structure forms of ultra low C, S, P continuous casting steel billets can be displayed clearly, a finish requirement on sample surface is lowered, the sample preparation working procedure is simplified and the larbour intensity of operators is lowered.
Owner:ANGANG STEEL CO LTD

Method for producing tribasic copper chloride

InactiveCN102730743AEmission complianceCopper chloridesAmmoniacal nitrogenTribasic copper chloride
The invention discloses a method for producing tribasic copper chloride. The method for producing the tribasic copper chloride includes the following steps of: (1) removing impurities from an acidic etching waste solution; (2) adding clean water or a tirbasic copper chloride production mother solution to a synthesis reactor, performing preheating, and then, preheating the acidic etching waste solution whose impurities have been removed and an alkaline solution of sodium hydroxide and mixing the two solutions for a reaction with the pH value and temperature of the reaction being controlled so as to gradually form the tribasic copper chloride, and discharging partial materials after a certain amount of reaction time; (3) filtering the materials discharged from the reaction system, and performing washing, suction filtration, centrifugation and drying on the filtrated residues to obtain the tribasic copper chloride; and (4) performing ammonia nitrogen removal treatment on filtrated liquid. By adopting the method for producing the tribasic copper chloride in the invention, continuous production can be achieved and the tribasic copper chloride with large particle size and high purity can be produced; further, production cost can be reduced and overall process can be integrated; and the method for producing the tribasic copper chloride is advantaged in simple ultimate steps of ammonia nitrogen removal, easiness in operation as well as reduced difficulty and cost of ammonia nitrogen treatment.
Owner:GUANGZHOU KECHENG ENVIRONMENTAL PROTECTION TECH

Three-dimensional nitrogen-doped graphene platinoid-loaded composite electro-catalyst and preparation method thereof

The invention discloses a three-dimensional nitrogen-doped graphene platinoid-loaded composite electro-catalyst. A preparation method comprises the following steps of ultrasonically dispersing graphene oxide sheet in an aqueous solution, adding urea and soluble nickel salt for full and uniform mixing, transferring the mixture into a hydrothermal reaction kettle for reaction, performing freeze-drying to obtain three-dimensional nitrogen-doped graphene, dissolving the three-dimensional nitrogen-doped graphene in ethylene glycol, sequentially adding chloroplatinic acid, copper chloride dehydrate and glutamic acid, and performing microwave reaction to obtain the catalyst. The method has the characteristics of that energy is saved, the speed is high, and the operation is simple; the raw materials are easy to obtain, the yield is high, the capability of platinum in the direct electro-catalytic oxidation of methanol under an acidic condition can be remarkably improved, peak current is 3 to 4 times than that of a commercial carbon black platinum-loaded electro-catalyst and a commercial carbon black platinum-ruthenium-loaded electro-catalyst, and the prepared catalyst is widely applied to a methanol fuel cell.
Owner:GUANGXI NORMAL UNIV

Acidic copper chloride etching liquid electrolytic regeneration recycling and copper plate recovery device and method

The invention discloses an acidic copper chloride etching liquid electrolytic regeneration recycling and copper plate recovery device and method. The device comprises an electrolytic bath which is divided into a cathode region and an anode region by virtue of a composite conductive macromolecular membrane, an etching auxiliary cylinder, an etching liquid waste liquid collecting cylinder, a regenerated liquid collecting cylinder and an exhaust treatment device, wherein the cathode region is internally provided with a cathode electrolytic sheet, the anode region is internally provided with an anode electrolytic sheet, and the etching auxiliary cylinder is internally provided with a gas dissolving device; a waste liquid generated by the etching cylinder is fed to the cathode region of the electrolytic bath by virtue of the etching liquid waste liquid collecting cylinder, a water inlet and a gas outlet are formed in the anode region of the electrolytic bath, the water outlet is communicated with the etching auxiliary cylinder by virtue of the regenerated liquid collecting cylinder, gases generated by the anode region are introduced to the etching auxiliary cylinder by virtue of the gas dissolving device at the gas outlet, the etching auxiliary cylinder is communicated with the etching cylinder, and exhaust gases generated by the etching auxiliary cylinder are fed to the exhaust gas treatment device. The device and method disclosed by the invention solve the problem that an existing acidic copper chloride etching liquid is high in energy consumption of regeneration recycling, low in reuse rate, more in copper impurities of the cathode and the like.
Owner:SHENZHEN XINRUISI ENVIRONMENTAL PROTECTION TECH

Dendritic crystal corrosion macroscopic examination reagent for solidification structures and defects of continuous cast blank and preparation method thereof

ActiveCN102174699ASolve the problem that the dendritic solidification structure of the continuous casting slab cannot be clearly displayedDisplay without reductionPreparing sample for investigationOptically investigating flaws/contaminationAlcoholCopper chloride
The invention discloses a dendritic crystal corrosion macroscopic examination reagent for solidification structures and defects of a continuous cast blank and a preparation method thereof. The reagent comprises the following components by mass percent: 0.28-1.09% of copper chloride, 0.17-0.27% of magnesium chloride, 0.56-1.60% of ferric chloride, 1.28-1.30% of hydrochloric acid with the mass concentration of 36-38%, 54.70-55.80% of absolute ethyl alcohol and the balance of water. The preparation method comprises the following steps: adding the water into a container, and then adding the copper chloride, magnesium chloride, ferric chloride and hydrochloric acid; and adding the absolute ethyl alcohol after all the added raw materials are fully dissolved, and evenly stirring. Compared with the prior art, the invention solves the problem that other corrosive reagents can not clearly display the dendritic crystal solidification structures of a continuous cast blank; and the reagent has the characteristic of original-size display without expansion or reduction for interior defects of a continuous cast blank when used for dendritic crystal corrosion macroscopic examination on the solidification structures and defects of the continuous cast blank.
Owner:苏州东大汉森冶金实业有限公司

Method for preparing monoclinic system crystalline state cupric oxide and uses thereof

The invention relates to a method for preparing monoclinic crystal system crystalline copper oxide and an application of the monoclinic crystal system crystalline copper oxide. The method comprises the following steps: a. a sodium hydroxide or potassium hydroxide water solution with a concentration of between 5 and 50 percent and a volume of between 30 and 80 percent of the volume of a reaction vessel is added into the reaction vessel, preheated to between 30 and 100 DEG C, added with crystalline copper chloride hydroxide with the addition between 1/6 and 1/3 of the mol number of sodium hydroxide, and reacted for 10 to 60 minutes at a reaction temperature of between 30 and 100 DEG C and under the condition of stirring; b. crystalline copper oxide is prepared after washing, pumping filtration, centrifugation and drying of reacted materials; and c. the crystalline copper oxide is crushed by the physical method, and the activated copper oxide with fine granularity are prepared. The method is easy to realize separation of the copper chloride hydroxide and the copper oxide with other water-soluble background salts, and has a simple technique and low production cost; and the crystalline copper oxide prepared has high yield, high purity, high activity, good quality and is suitable for mass production.
Owner:SHENZHEN SHENTOU ENVIRONMENT TECH CO LTD

Controllable preparation method for three-dimensional nano self-assembly of copper oxide

InactiveCN103771485ALow costReduce technical effectNanotechnologyCopper oxides/halidesCopper oxideSolvent
The embodiment of the invention discloses a controllable preparation method for a three-dimensional nano self-assembly of copper oxide. The controllable preparation method comprises the following steps: preparing a 2.0-10.0mol/L sodium hydroxide water solution by taking deionized water as a solvent; preparing a copper chloride water solution with the Cu<2+> concentration of 0.01-0.15mol/L by taking anhydrous copper chloride as a copper source and the deionized water as a solvent; dropwise adding the equivalent copper chloride water solution into the sodium hydroxide water solution, and sufficiently stirring; transferring the mixed solution into a reaction kettle, sealing and reacting in a drying oven with the temperature of 100-150 DEG C for 4-8h; and after the reaction is ended, centrifugally collecting the product, respectively cleaning the product many times by using the deionized water and absolute ethyl alcohol, and then, drying at the temperature of 50-70 DEG C for 3-5h to obtain the three-dimensional nano self-assembly of the copper oxide. The spherical, chrysanthemum-like and fan-like three-dimensional self-assembly with a secondary nanosheet structure is prepared from reaction raw materials with low prices at lower temperature by using a hydrothermal synthesis method.
Owner:CHINA JILIANG UNIV

Treatment process and system for organic silica mud

The invention relates to a treatment process for organic silica mud. The treatment process comprises the following steps of: disilane hydrolysis, copper chloride leaching, pressing and backwashing, copper replacement, silicon slag roasting and tail gas treatment. According to the treatment process, hydrogen chloride gas generated by hydrolysis is effectively utilized, so that hydrogen chloride gas realizes zero discharge; a stirring reaction kettle is adopted for stirring and leaching, so that a leaching rate of copper is as high as 99%, copper content of sponge copper is 70% or higher, and iron chloride content is 30% or higher, and therefore, the economical value is increased; hydrolysis residues are roasted through a rotary kiln, so that silicon oxide content is greater than 98%, and therefore, the whole process route is free of wastewater and waste residue discharge, the waste gas is only carbon dioxide, harms on environment are reduced to be the lowest, the products are metal copper and silicon powder, and the economical value is high. Throughout the process, zero discharge of wastewater and waste residues is realized, so that the environmental benefits are remarkable; hydrolysis and leaching are performed under normal pressure at a temperature lower than 90 DEG C, requirements on the material and strength of equipment are not high, and a roasting temperature of the rotary kiln ranges from 500 DEG C to 850 DEG C; and moreover, silicon powder does not contain corrosive hydrogen chloride, and requirements on the material of the rotary kiln are not high.
Owner:李鹏

Process for preparing calcium sulfate crystal whisker by desulfurized gypsum as well as calcium sulfate crystal whisker

InactiveCN102605430ASolve the costSolve problems that are not conducive to sustainable developmentPolycrystalline material growthFrom normal temperature solutionsCopper chlorideDiameter ratio
The invention discloses a process for preparing calcium sulfate crystal whisker by desulfurized gypsum as well as calcium sulfate crystal whisker, which can be used for solving the problems that the conventional process for preparing the calcium sulfate crystal whisker by the desulfurized gypsum has the defects of lower quality of the prepared calcium sulfate crystal whisker, higher used reagent price, and higher production cost. The process for preparing the calcium sulfate crystal whisker by the desulfurized gypsum is realized by the steps of material taking, ball-milling, slurry preparation, habit modifier feeding, hydrothermal reaction, dehydration and drying. The calcium sulfate crystal whisker prepared by the desulfurized gypsum has higher quality, has diameter of 1-3 mu m and has a length-diameter ratio of 100-150. Furthermore, the diameter distribution and the length-diameter variation of the calcium sulfate crystal whisker are smaller; and the calcium sulfate crystal whisker is crystallized well on the surface. The process provided by the invention has the advantages of simple process, and convenience in control. The used habit modifier is copper chloride and has lower cost, so that the production cost is effectively reduced and the process provided by the invention is good for development of enterprises. The conversion rate of the desulfurized gypsum reaches to be more than 80%. The prepared calcium sulfate crystal whisker has lower impurity content. The invention provides a novel route with high extra value, high technology and high quality utilization for the treatment of the desulfurized gypsum.
Owner:HENAN UNIV OF URBAN CONSTR
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