31 results about "Electrolysis" patented technology

The invention provides a synergetic metal recycling method for nickel and cobalt containing waste batteries and copper containing electronic waste. The preliminarily smashed and metal element enriched waste batteries and the copper containing electronic waste are mixed, and a slag former and a reducing agent in a certain ratio are blended for an oxidative reducing reaction; relatively active metal iron, aluminum and the like in the reaction process form oxide to enter an upper layer slag phase; metal cobalt and nickel enter copper liquid on the bottom layer, and therefore the metal phase and a slag phase are separated, and metal containing copper, cobalt and nickel is obtained; and copper, cobalt, nickel and other high-purity metal are recycled through electrorefining. The method is short in flow, high-temperature thermometallurgy is adopted for synergetically recycling the valuable metal in the batteries and the electronic waste, and the problems that traditional waste battery wet recycling efficiency is low, the environment is polluted, a large amount of lixivium needs to be used, and a large amount of acid and alkaline is consumed are avoided; and an efficient novel recycling way is provided for waste ternary battery and electronic waste resource recycling, and good industrial application prospects are achieved.

The invention provides a slow-release compound fertilizer, which is a spherical or near-spherical granular compound fertilizer having a layered structure, wherein the innermost layer is a nitrogenous fertilizer layer; the intermediate layer is a potassic fertilizer layer; the outer layer is a mineral layer containing phosphorus; proportions of nitrogen, phosphorus and potassium are determined according to thicknesses of the fertilizer layers. The invention further provides a production method of the slow-release compound fertilizer. Tailing pulp is generated after heavy metals, manganese and iron are recycled from leached residues of production enterprises for electrolyzing manganese metal and manganese dioxide. The production method comprises the following steps of: adding flocculating agent, the weight of which is 0.01-0.02% of that of tailing mud, into the obtained tailing pulp, carrying out filter pressing by using a belt filter press, wherein the moisture content of filtered mud is 40-50%; and then, adding phosphatic fertilizer into the filtered mud, uniformly mixing, and carrying out calendering forming three times and roller-crushing calendaring granulating once by adopting a fertilizer granulator and drying to obtain the slow-release compound fertilizer.

The invention discloses a preparation method of ferric vanadate photocatalysts. According to the method, firstly, a direct current electrolysis method is used; by controlling the current density, the electrolyte concentration and the temperature, ferric vanadate with different appearance structures and particle diameters is prepared; then, products obtained at an anode are cleaned and filtered; obtained filter cake is dried for 4 to 6h at the temperature of 80 DEG C to 100 DEG C; natural cooling is performed to room temperature; finally, at the air atmosphere, the temperature is raised to 500 to 700 DEG C at the temperature rise speed of 2.5 to 10 DEG C/min; high-temperature roasting is performed for 3 to 5 h; the ferric vanadate with high purity and high cleanness degree can be obtained; the composition is FeVO4. The product obtained by controlling the corresponding conditions has the main appearance of ball-shaped particles and micro nanometer lines.

A method for preparing a sodium-ion battery comprising a positive electrode and a negative electrode arranged to either side of an electrolyte, the positive electrode comprising, as the active material, a material made from sodium, the method comprising the following steps: a step of depositing a sodium salt on the surface of the positive electrode, before placing same in the battery; a step of assembling the positive electrode, the negative electrode and the electrolyte; and a step of forming a passivation layer on the surface of the negative electrode with the sodium ions from the decomposition of the sodium salt, by applying a first charge to the abovementioned assembly.

The invention provides a method for recovering gold from a printed circuit board of a waste mobile phone. The method comprises the following steps that the gold in a gold leaching liquid of the printed circuit board of the waste mobile phone is adsorbed by adopting an adsorbent so as to obtain gold-loaded carbon, wherein the adsorbent is selected from biochar or iodine-loaded biochar; and the gold-loaded carbon is subjected to desorption, and then a desorption solution is electrolyzed so as to obtain the gold. According to the method, after gold leaching is carried out on the printed circuit board of the waste mobile phone, the iodine-loaded biochar is adopted for adsorption, liquid gold is concentrated, then the gold can be recovered through electrolysis, meanwhile, the gold leaching liquid (iodine) can be recovered, so that the production cost can be lowered, and the resource utilization efficiency can be improved; modification is carried out on the biochar by using an ethanol solution of iodine so as to prepare the iodine-loaded carbon, so that the gold adsorption efficiency can be improved, and meanwhile, the utilization rate of the iodine can be increased; and the biochar prepared from agricultural waste is used for adsorbing the gold, so that the waste can be recycled, the production cost can be lowered, and the energy consumption can be reduced.

The invention relates to a method for recycling waste gas generated by combusting water or water vapor and hydrogen. After the waste gas generated by combusting the hydrogen and the water or water vapor in a gas-engine or internal-combustion engine is collected, the temperature of the waste gas is reduced to below 30DEG C through a heat exchanger, so that the water and the hydrogen are separated; the separated hydrogen is pressurized and introduced into the gas-engine or the internal-combustion engine, and simultaneously water or water vapor and supplementary hydrogen are introduced into the gas-engine or the internal-combustion engine so as to form mixed fuel; after waste gas generated by combusting the mixed fuel is collected again, the temperature of the waste gas is reduced to below 30DEG C through the heat exchanger; the separated hydrogen is pressurized again and is introduced into the gas-engine or the internal-combustion engine, and water or water vapor and supplementary hydrogen are introduced into the gas-engine or the internal-combustion engine so as to form mixed fuel; the waste gas is recycled continuously; meanwhile, the gas-engine or internal-combustion engine drives a generator to generate electricity, and by utilizing the generated electricity, the water is prepared into hydrogen and oxygen by the technology of producing hydrogen by water electrolysis. The method can recycle the waste gas generated by combusting the hydrogen, and circularly combusts and recycles the waste gas.

The invention discloses a method for degrading industrial organic wastewater by ultrasonic wave ozone-microelectrolysis coupling. According to the method, industrial organic wastewater is subjected tofront-end treatment by using micro gas bubbles generated by ultrasonic oscillation and plasma ozone output by a gas distribution plate, so that the escape of ozone is avoided, and the utilization rate of ozone is increased; and sponge iron, a carbon molecular sieve, a small amount of a catalyst and a binder are used as a reinforced iron-carbon microelectrolysis filler, wherein sodium chloride isadded into the catalyst as a reaction electrolyte so as to improve the reaction efficiency, and the binder with a certain conductivity promotes the stable performing of a microelectrolysis reaction. According to the invention, by additionally arranging a movable turbine turnover stirrer during the use, the complete reaction time of an iron-carbon micro-battery and wastewater is guaranteed, and theproblem of hardening of the microelectrolysis filler is solved; and the method is high in treatment efficiency, high in raw material utilization rate, safe and reliable.

The invention relates to a novel device for generating electrolytic ionized water and a method for preparing electrolytic ionized water. The device comprises a purifying setting tank, wherein a hydrodynamic cavitator is connected with the purifying setting tank; an electrolytic raw water mixer is connected with an outlet of the hydrodynamic cavitator; a sodium chloride storage is jointed above the electrolytic raw water mixer; an electrolysis device is connected with the outlet of the electrolytic raw water mixer; a solenoid valve is arranged on a connecting pipeline of the electrolytic raw water mixer and the sodium chloride storage; a controller is connected with the solenoid valve; a concentration detector is arranged in the electrolytic raw water mixer; and the concentration detector is connected with the controller. The preparation method comprises the following steps: pouring raw water into the purifying setting tank and the hydrodynamic cavitator from a water inlet and then pre-treating; pouring the raw water after the cavitating treatment into the electrolytic raw water mixer, thereby preparing into electrolyte water; and pouring the electrolyte water into the electrolysis device, electrolyzing, generating ionized water and draining from the outlet. The device provided by the invention is higher in sterilization and disinfection effect, is capable of intelligently preparing the electrolyte water in corresponding concentration and is more efficient in electrolysis.

The invention discloses a preparation method of composite metal ion water. The method comprises the following steps: step 1, putting two electrolysis polar plates into each water tank; 2, injecting deionized water into each water tank; 3, carrying out electrolytic treatment; and 4, mixing the deionized water containing the metal ions to obtain the composite metal ionized water. Two electrolysis polar plates are placed in each water tank, direct-current voltage is applied to the two electrolysis polar plates, the positive electrode and the negative electrode of the direct-current voltage are switched, the switching time is controlled, and metal ions on the two electrolysis polar plates are electrolyzed into deionized water; the number of ions, entering the deionized water, of the two electrolysis polar plates is accurately controlled, so that the concentration of the metal ions in the obtained composite metal ionized water is controlled, the composite metal ionized water is obtained by mixing the deionized water containing the metal ions in all the water tanks, and the obtained composite metal ionized water can be applied to various environments.

The invention relates to the technical field of extractor hoods, in particular to an extractor hood. The extractor hood comprises a wind wheel, an electrolysis device suitable for preparing disinfectant fluid and a liquid spraying device directly or indirectly communicating with the electrolysis device and arranged close to the wind wheel, and the liquid spraying device is suitable for spraying the disinfectant fluid onto the wind wheel. According to the extractor hood, by arranging the electrolysis device and the liquid spraying device, the interior of the extractor hood is cleaned and disinfected, the influence of bacteria breeding in the extractor hood on cooking and living health is prevented, and by arranging the liquid spraying device in the extractor hood, cleaning and disinfectingoperation can be carried out at any time after the extractor hood is used; the extractor hood is kept in a clean state for a long time, and the situation that a user disinfects and cleans the interiorof the extractor hood difficultly is avoided; and in addition, the disinfectant fluid can be produced only by electrolyzing edible salt water, the disinfectant fluid has no residue after use and hasno burden on the environment, and the electric energy consumption is low.

The invention discloses a waste water recycling method. The method comprises the following steps: conveying waste water into a waste water pool, and conveying the waste water in the waste water pool into an activated carbon tank through a lifting pump; filtering suspended solids and colloidal substances in the wastewater through activated carbon; feeding the wastewater with the adjusted PH value into an ultrafiltration device, and then removing colloidal substances in the wastewater; conveying the treated wastewater into a reverse osmosis RO membrane system, wherein the reverse osmosis RO membrane system is used for concentrating and separating concentrated water and fresh water according to the ratio of 1:4; and directly applying the concentrated and separated fresh water to a water point for production, adjusting the pH value of the concentrated and separated concentrated water to 6-7, feeding the concentrated water into a CME electrolysis device through a pump for electrolytic oxidation, treating the concentrated water, and conveying the treated concentrated water into a wastewater collection tank. The invention provides a wastewater recycling method which is simple, convenient to operate, stable and reliable in performance and long in service life, can be applied to pretreated wastewater in all walks of life, and can be used for effectively recycling the wastewater.

The invention discloses aluminum alloy EBSD sample alkaline electrolysis polishing liquid and a preparation method and electrolysis polishing method thereof and belongs to the technical field of analysis. The aluminum alloy EBSD sample alkaline electrolysis polishing liquid and the preparation method and electrolysis polishing method thereof are suitable for aluminum alloy samples prepared by different processingmethods, operation is convenient, and the cost is low. The electrolysis polishing liquid comprises 40-100 g/L of sodium ethoxide, 15-25 g/L of sodium silicate, 10-20 g/L of sodium metaaluminate, 8-12 g/L of glucose, and water. The preparation method of the alkaline electrolysis polishing liquid comprises the steps that the water is heated to be 50 DEG C, and the sodium ethoxide, the sodium silicate, the sodium metaaluminate, the glucose and the water are added. The electrolysis polishing method comprises the steps of (1) mechanical grinding and polishing, (2) oil stain removaltreatment, and (3) electrolysis polishing. According to the aluminum alloy EBSD sample alkaline electrolysis polishing liquid and the preparation method and electrolysis polishing method thereof, theproblem that the preparation polishing effect of traditional aluminum alloy EBSD samples is poor is solved.

The invention relates to a new technical process for refining through lead electrolysis without copper tubes of wet lead electrolysis, which is energy-saving, high efficient and environmental friendly. The method has main characteristics that firstly, traditional rectification power supply which is cumbersome is cancelled, high frequency switching power supply which is made of nanometer material is adopted, energy is saved by 20%-30%, secondly, the copper tubes are not used to conduct electricity, and thirdly, the flow direction of electrolyte is changed. A positive electrode 1 of the power supply enters a positive plate 3 to react with the electrolyte through a hanger 2 on the first positive plate, is transformed into lead ions 4, flows to an emission surface 5 whose right side is clung with a cathode plate of a second positive plate, and is reduced to pure metal lead. Current flow also flows to the emission surface of a third positive plate through the back 6 of the second positive plate. The positive electrode of the power supply forms a return circuit with a negative electrode 8 of the power supply through continuously transmitting to a last cathode plate 7, the electrolyte 9 flows into a liquid inlet tube 10 from an elevated tank, respectively flows through a distribute tube 11, flows to an inlet on the bottom of an overflow flat groove 12, then, ascends to flow into a distribute tube 13, enters an underground tank through a liquid return pipe 14, and hoists to the elevated tank through a pump, wherein exhaust gas, waste slag and wastewater are not discharged in electrolysis.

This invention relates to the preparation of benzaldehyde by using nanometer manganese oxide (MnO2). It contains steps of: (1), providing an electrolytic bath with its anode chamber and cathode chamber, with positive electrode and negative electrode respectively, and isolated from each other by cation-exchange membrane; (2), adding manganese sulfate solution and phenylmethanol solution at optional ratio as electrolytic solution, and sulfuric acid solution is added into the cathode chamber as its electrolytic solution; (3), powering-on the electrodes to proceed the electrolytic reactioin, at the same time agitating the electrolytic solution in cathode chamber; (4), providing an ultrasonic generator, putting said electrolytic tank into said ultrasonic generator equipment, making the electrolytic reaction being proceeded under the ultrasonic wave; (5), the above mentioned equipment is placed in the condition of 60-95 deg.C for 0.5-3 Hrs; (6), the liquid product is then subjected to procedures of extraction, vacuum distillation to produce the final product benzaldehyde.

The invention belongs to the technical field of argon recovery, and particularly relates to an argon recovery device for removing carbon monoxide through a rectification method and an operation method. The argon recovery device comprises an argon compressor, a deoxidizing reaction furnace, a cooler, an argon precooling and purifying system, and a rectification cold box; and a heat exchanger, an argon tower reboiler, a pure argon tower, a crude liquid argon throttle valve V2, a pure liquid argon throttle valve, a circulating liquid argon throttle valve V5 and an argon tower condensation evaporator are mounted in the rectification cold box. The device has the advantages that liquid argon can be conveniently provided by recycling the liquid argon in the field, and the liquid argon is used for providing cooling capacity; the mixed oxygen is removed by using hydrogen produced by water electrolysis hydrogen production, and nitrogen, carbon monoxide and excess hydrogen are removed by using the low-temperature rectification method, such that the greatest advantage is that a carbon monoxide removing device is omitted, the tolerance of raw material gas to the oxygen content is substantially improved, the argon gas recovery rate is improved, the low-temperature rectification process and operation are simplified, and the operation energy consumption is reduced.