44 results about "Electrolytic process" patented technology

The application belongs to the technical field of rare earth metallurgy, and discloses a method for preparing rare earth metal by electrolyzing molten salt. The method comprises the following steps: taking rare earth oxide as electrolytic raw material, and performing electrolysis in molten salt electrolyte under a protective atmosphere; and collecting the deposit after electrolysis, so that the rare earth metal is obtained. Through the synergistic effect of multi-dimensional process, the application successfully constructs an efficient, green and stable rare earth metal electrolysis preparation system. The system completely eliminates carbon pollution, significantly improves the stability of the electrolysis process and the quality of the product, realizes efficient and stable preparation of high-purity rare earth metal, and can meet the stringent requirements of high-end electronics, aerospace, high-performance permanent magnet materials and other fields for ultra-high-purity rare earth products.

The application belongs to the technical field of material detection, and specifically provides a method for determining the sodium expansion rate of an aluminum cathode with a non-standard size under pressure, characterized in that the method comprises the following steps: preparing a composite sample through an aluminum cathode carbon block and a graphite block, and preparing a control sample through the graphite block; electrolyzing the composite sample and the control sample respectively; determining a first length increment curve of the composite sample in an electrolysis process, and determining a second length increment curve of the control sample in the electrolysis process; and determining the sodium expansion rate of the aluminum cathode based on the first length increment curve and the second length increment curve. The technical scheme provided in the application can realize the determination of the sodium expansion rate of an aluminum cathode with a non-standard size.

The utility model relates to water electrolysis technical field, specifically disclose a kind of low-temperature full gaseous water vapor electrolytic hydrogen production device and system. The utility model aims at overcoming the limitations of existing water electrolysis technology in energy efficiency, cost, system complexity, operation flexibility and environmental adaptability etc. The utility model is core at, under the mild condition lower than 90 DEG C, water is supplied to cathode and anode of electrolytic cell in the form of pure gaseous water vapor simultaneously, using specially designed membrane electrode assembly and internal water management structure, under the action of direct current, water vapor is decomposed efficiently to generate high-purity hydrogen and oxygen. The entire electrolysis process avoids the direct input and circulation of liquid water, realizes gas-solid two-phase interface reaction, significantly simplifies water balance system, reduces equipment volume and weight, solves the bubble coverage of traditional liquid phase electrolysis, mass transfer resistance. The utility model device has the characteristics of modularization and miniaturization, and significantly reduces the net power consumption per unit hydrogen production.

The application discloses a copper electrolysis additive adding system and a control method. The copper electrolysis additive adding system comprises an electrolytic cell, an additive dissolving device, a first transmission pipeline, a first metering pump and an electric control device, and an additive dissolving groove is formed in the additive dissolving device. One end of the first transmission pipeline is connected to the electrolytic cell, and the other end of the first transmission pipeline is connected to a liquid outlet of the additive dissolving device. The first metering pump is arranged in the first transmission pipeline. The electric control device is in communication connection with the first metering pump, so as to control the first metering pump to adjust the flow of the solution transported from the additive dissolving device to the electrolytic cell. According to the copper electrolysis additive adding system, the accurate control and the uniform and continuous addition of the additive solution are realized, and the stability of the electrolysis process and the quality and production efficiency of the electrolytic copper are improved.

This invention discloses a method for extracting gallium from coal using rare metal extraction technology. Using dry fly ash with a gallium content of 50-80 μg / g as raw material, the method sequentially involves raw material pretreatment, roasting activation, acid leaching, leachate pre-purification, solvent extraction and back-extraction, deep refining, and electrolytic refining to achieve efficient gallium extraction and purification. The core of this method is the destruction of the aluminosilicate lattice through high-temperature roasting activation with soda ash, converting gallium into a soluble state. Impurities are then removed through three stages of deep purification, combined with an alkaline constant-current electrolytic process to prevent impurity co-deposition. This method realizes the resource utilization of low-grade fly ash solid waste, significantly improves the gallium leaching rate and resource recovery rate, and ultimately obtains industrial-grade gallium with high purity.

The application discloses an electro-catalysis-plasma coupling device for recovering elemental nickel from chemical nickel waste liquid and relates to the technical field of wastewater treatment. The device comprises a movable box body, an electrolysis unit and a plasma treatment unit arranged in the movable box body. The device integrates electrolysis, plasma, temperature control and circulation in the movable box body, has a compact structure, is convenient to transport and deploy on site, and is suitable for various scenes such as laboratories, electroplating workshops and wastewater treatment stations. A heating device is arranged in the electrolytic tank to heat and maintain the electrolyte in a target temperature range. A plasma generator is arranged to perform plasma quenching treatment on the electrolyte during electrolysis, significantly improve the concentration of free nickel ions in the electrolyte, improve the electrodeposition effect, and control the wastewater to quickly reach the electrolysis water level through the overflow port, the stainless steel rod, the magnetic pump, the check valve and the distribution box. The discharged electrolyte can be sent back to the electrolytic tank for re-electrodeposition by changing the placement of the water inlet pipe, thereby improving the recovery amount of nickel.

The utility model discloses a laboratory is with aluminum alloy electrolytic polishing device relates to electrolytic polishing device technical field, include: electrolytic tank, its inside is equipped with mutually parallel arrangement's anode column and cathode column, install the board, fix in anode column bottom portion is used for clamping work piece, baffle, vertical fixed in the middle part of install the board, and one pair of flow guide curved surface is arranged to both sides symmetry, impeller subassembly, including the rotation impeller that symmetry is equipped with baffle both sides, the utility model discloses the flow guide curved surface of baffle both sides symmetry arrangement cooperates with symmetry's rotation impeller, and the electrolyte is swept when impeller rotates and is washed work piece through flow guide curved surface, makes the electrolyte can even function on work piece surface, realizes efficient polishing, the arc flow guide block that sets up can drain the electrolyte after washing, and the electrolyte more smoothly flows to electrolysis area under the guidance of guide plate, and the sinking type collection tank can collect the electrolyte after the drainage of arc flow guide block and the foreign matter generated in electrolytic process.

This invention belongs to the field of electrochemical deoxygenation technology, specifically relating to an electrochemical oxygen atmosphere control system and method. The system, from bottom to top, includes a porous bottom cover, a first hydrophobic and breathable membrane, an oxygen-consuming cathode, a liquid-conducting diaphragm, an oxygen-evolving anode, a second hydrophobic and breathable membrane, and a porous top cover. Each component layer forms a zero-gap contact through the clamping force of the outer shell, enabling the device to achieve an ultra-thin thickness. The liquid-conducting diaphragm has a transverse liquid-conducting groove extending to the external electrolyte chamber, utilizing capillary action to achieve rapid electrolyte replenishment and eliminate local hot spots. Through the coupling design between the hydrophobic and breathable membrane and the electrode interface, oxygen generated by the oxygen-evolving anode directly penetrates and overflows in the form of gas molecules, effectively suppressing bubble formation and accumulation in traditional electrolysis processes, and significantly reducing the ohmic resistance of the interface and operating energy consumption. This invention features an extremely thin structure, high reaction efficiency, and no bubble interference, making it suitable for precise oxygen concentration control in spaces such as refrigerators and precision storage environments.

The application discloses a method for preparing a titanium carbon oxide electrode by coating, and the method comprises the following steps: A. crushing and screening titanium carbon oxide, mixing the titanium carbon oxide with a pore-forming agent and a binder to obtain a mixture, and adding water into the mixture to prepare a slurry; B. coating the slurry on a graphite substrate by using a doctor blade; and C. drying and sintering the coated graphite substrate to obtain the titanium carbon oxide electrode. The application provides a method for preparing a titanium carbon oxide electrode by coating, the titanium carbon oxide electrode is prepared by coating and sintering the mixed slurry on a graphite substrate, the peeling problem of the electrode caused by gas scouring in an electrolysis process is avoided, the loose and porous structure formed by sintering makes the electrode have relatively high dissolving performance, the anode dissolving rate is increased from 50% to more than 80%, and the problem of low dissolving rate of the titanium carbon oxide anode in the electrode process is solved.

This disclosure provides a methanol reforming hydrogen production reactor based on thermo-electric synergy, which adopts a stacked assembly structure in the form of an electrolyzer. The anode bipolar plate has a gas flow channel inside, at least a portion of which has a porous metal structure. A first catalytic layer is loaded on the surface of this porous metal structure for catalyzing the thermochemical reforming reaction of methanol and water vapor. A second catalytic layer is loaded on the anode gas diffusion electrode for catalyzing the electrochemical oxidation reaction of hydrogen. A third catalytic layer is loaded on the cathode gas diffusion electrode for catalyzing the electrochemical reduction reaction of protons. This reactor fully utilizes the space and specific surface area of ​​the flow channel by extending the thermochemical reforming reaction zone from the surface of the membrane electrode to the interior of the gas flow channel of the anode bipolar plate, significantly improving the catalyst loading and reaction efficiency. Simultaneously, the electrochemical process continuously consumes hydrogen on the anode side, reducing its partial pressure and driving the thermochemical reforming reaction towards hydrogen production, resulting in a methanol conversion rate higher than that of a pure thermochemical or pure electrolysis process. This achieves the synergistic utilization of low-grade electrical and thermal energy.

This utility model discloses an electrolyte tank with an anti-precipitation and anti-turbulence structure, relating to the field of electrolyte tank technology. It includes a shell, a rotor pump on one side of the shell, a pipe fixedly connected to the input end of the rotor pump, the pipe penetrating the side wall of the shell and extending into the shell, a sealing plate slidably inserted into the shell, a power chamber on one side of the shell, and a drive assembly inside the power chamber, the drive assembly being connected to one end of the sealing plate. This utility model isolates the shell into two areas through the sealing plate. This design ensures that the operation of collecting precipitated impurities is independent of the area containing the normal electrolyte, avoiding interference with the normal electrolyte during precipitation collection. For example, it prevents precipitated impurities from being stirred and then mixed back into the normal electrolyte, ensuring the purity and quality of the normal electrolyte and facilitating the stable operation of the electrolysis process.

The present disclosure relates to the technical field of nano materials and aims to provide to a method for preparing nano-graphene oxide by electrochemically exfoliating a carbon fiber material. The method includes the following steps: building an electrochemical reaction system by using a raw material with a carbon fiber as a basic structural unit as an anode, a metal or graphitic carbon material as a cathode, and a phosphate buffer solution with a neutral pH as an electrolyte; in an electrolysis process, gradually exfoliating a carbon fiber in the anode raw material and dispersing the carbon fiber in the electrolyte solution to generate graphene oxide; centrifuging to separate the reacted electrolyte solution, taking upper dispersion liquid, and washing away residual anions and cations; and performing ultrasonic treatment to obtain nano-graphene oxide dispersed in water and free of impurities.

This invention discloses a method for producing high-purity metallic cerium with low iron and low silicon content, relating to the field of metal smelting technology. The method comprises the following components: S1, an electrolytic raw material pretreatment step; S2, a composite molten salt system preparation step; S3, an inert-coated cathode preparation and electrolytic cell assembly step; and S4, a PLC-based intelligent electrolysis control step. This invention effectively reduces the iron and silicon impurity content in the raw materials and molten salt through rigorous pretreatment of the electrolytic raw materials and precise preparation of the composite molten salt system. Particularly during the electrolysis process, the PLC control system monitors and automatically adjusts the Fe content in the molten salt in real time. 3+ and Si 4+ Concentration, when Fe 3+ or Si 4+ When the levels exceed the limit, the system will automatically adjust the current density, temperature, and add Na2O to ensure that the iron and silicon impurities in the product are extremely low, thereby significantly improving the purity of metallic cerium.

Processes are provided in which successive steps of hydrometallurgical value extraction may be carried out using the products of carbon capture and an electrolytic reagent-generating process. The electrolytic process provides an acid leachant and an alkali hydroxide, with the alkali hydroxide then available for use either directly as a precipitant in the hydrometallurgical steps, or available for conversion by carbon capture to an alkali metal carbonate that can in turn be used as the precipitant in the selective hydrometallurgical steps.

This application relates to the field of electrolysis process control technology, and provides a method and system for controlling the electrolysis process of a hydrogen-rich water generation device. The method includes: controlling a physical signal transmitter to emit a detection physical signal towards a target object in the electrolysis cell of the hydrogen-rich water generation device; the target object being an electrode or a proton exchange membrane; acquiring a reflected physical signal from the target object; determining the film coverage information on the target object based on the reflected physical signal; determining the influence index of the film on the electrolysis process based on the film coverage information; and determining control information for the electrolysis process based on the film coverage information and the influence index. This improves the efficiency of electrolysis process control.

The invention relates to an electrode for gas evolution in an electrolytic process, comprising a metal substrate and a coating formed on the substrate, the coating comprising at least a catalytic porous outer layer comprising porous nickel oxide regions dispersed within a solid nickel oxide binder, and a method for producing such an electrode from preformed nickel vanadium oxide particles.

A porous nickel electrode for improving the stability of alkaline water electrolysis, its preparation method, and its application are disclosed. This invention relates to the field of electrode material technology. The method involves heating a nickel mesh and zinc powder in a nitrogen atmosphere at 200-400 °C for 2-4 hours to obtain a nickel-zinc alloy material grown on the mesh. This material is then chemically etched in an alkaline solution to obtain a porous nickel electrode. The porous nickel electrode is then held in a reducing atmosphere at 200-700 °C for 2-4 hours to complete the preparation of the porous nickel electrode. This invention constructs a porous structure with interconnected pores through an alloying-dealloying process, which facilitates rapid hydrogen desorption during electrolysis, reduces bubble blockage, and improves mass transfer efficiency. Secondary heat treatment within a specific temperature range coarsens the porous ligaments, enhancing mechanical strength and structural stability, and preventing structural collapse or active layer detachment during long-term operation. The prepared electrode maintains high hydrogen evolution activity while exhibiting excellent electrochemical stability and mechanical durability, making it suitable for industrial alkaline water electrolysis.

This invention discloses an intelligent monitoring method and system for chloride ion content based on multi-source data correction, belonging to the field of intelligent chloride ion content monitoring technology. The method includes: acquiring chloride ion sensing data and electrolysis process parameters during copper foil electrolysis production to construct a basic monitoring data set; identifying stable operating intervals based on the basic monitoring data set and generating a micro-perturbation control sequence to be applied to the electrolysis process to create a perturbation state; extracting the time interval and preceding / following neighborhoods of the perturbation effect to construct a perturbation response data sequence; segmenting the perturbation response data sequence to extract the response change amplitude, change rate, and recovery characteristics to form a perturbation response feature set; performing consistency analysis based on the response characteristics to identify and correct abnormal response intervals, obtaining a correction sequence; performing continuity screening and fluctuation convergence processing on the correction sequence to output the target chloride ion content value. This invention achieves dynamic and accurate monitoring of chloride ion content.

The application discloses a kind of full-automatic insulating oil micro water content tester, including instrument body, instrument body is provided with power module, display module and controller.Electrolytic cup, reagent container, pure water container and oil sample container are arranged on the instrument body.Electrolytic cup and pure water container and oil sample container are connected by sample feeder respectively;Electrolytic cup and reagent container are connected by quantitative pump and sealed stainless steel pipeline.Light source and camera are also provided to obtain the image of electrolyte, and the controller obtains the image change data of electrolyte through the camera, and gives the instruction to cut off the electrolysis power supply when the change rate of the image reaches the set limit value.The application can accurately obtain the end point of electrolysis process and improve the accuracy of micro water detection.

The invention is about an electrolysis system (01) for the electrolysis of CO2 comprising. For the electrolysis process a plurality of electrolysis cells (02) is required. An electrolyte reservoir (04) with connection to the electrolysis cells (02) and a cleaning system (06) is provided. To enlarge the operational time for the electrolysis system (01) it is foreseen that an electrolyte can pass through the cleaning system (06) during operation of the electrolysis system (01), wherein the cleaning system (06) comprises a formate reduction module (21). Here, a first separation column (22) and a second separation column (23) are arranged fluidly in parallel, which enables an alternating flow. The separation columns (22, 23) have a resin filling to enable a reduction of formate.

A method for water splitting using red mud includes applying a potential to an electrochemical cell with a working electrode, a reference electrode, and a counter electrode. The working electrode is a nickel foam substrate with an annealed red mud surface layer, containing 10 to 30 percent by weight iron. The electrochemical cell contains an aqueous basic solution which facilitates the electrolysis process upon applying potential. Water is split into hydrogen gas and oxygen gas at the working electrode.

The present application belongs to the field of copper smelting, and particularly relates to a system for processing suspended matter in copper electrolyte. Overflow liquid pipes and high-end liquid discharge pipes of electrolytic cells are respectively connected to supernatant overflow of a sedimentation tank after sedimentation to a circulating electrolyte low tank. A low-end liquid discharge pipe of the electrolytic cell is connected to a thickening tank. A supernatant overflow port of the thickening tank is connected to a liquid inlet of a first filter press. A liquid outlet of the first filter press enters the circulating electrolyte low tank. A liquid outlet of the circulating electrolyte low tank is connected to a liquid inlet of the electrolytic cell. The above scheme processes electrolyte containing suspended matter produced by different stages of electrolysis and different liquid outlets according to the properties and content of the suspended matter, greatly improves the electrolyte circulation efficiency, and avoids the enrichment of suspended matter in the electrode liquid to affect the electrolysis process and the quality of cathode copper.

The utility model relates to a kind of soldering electrolytic cathode plate punch riveting fixing device, including support, support is equipped with support seat, copper bar groove is set in support seat top, lower pressing plate that can move up and down is set in support seat below, punch riveting jack is installed on lower pressing plate, upper pressing plate that can move up and down is set in support seat top, copper plate pressing rod is installed on upper pressing plate corresponding copper bar groove, mounting seat sleeve is also installed on upper pressing plate, punch riveting head is installed in mounting seat sleeve, punch riveting pressing sleeve is slidably installed in the inside of mounting seat sleeve outside punch riveting head, punch riveting head is set corresponding with punch riveting jack by passing through support seat.Punch riveting first copper bar is pressed into copper bar groove, then punch riveting is carried out;Pressing sleeve is pressed tightly workpiece first, punch riveting head penetrates workpiece, punch riveting head is extracted after lower punch riveting jack presses the edge and flattens, jack ejects copper bar again, effectively guarantee the interelectrode distance accurate, reduce the probability that pole plate is torn in electrolytic process, improve soldering piece and copper bar as far as possible paste together tightness.

The application discloses a preparation method and application of an inert metal tungsten anode for low-temperature electrolytic aluminum of ionic liquid, and relates to the technical field of electrolysis. The preparation method of the porous tungsten inert anode provided by the application comprises raw material proportioning, raw material mixing, vacuum sintering and electrode purification. The method combines a discharge plasma sintering process with an electrochemical dissolution process to prepare the porous tungsten anode with a pore diameter of 1-10 microns. The anode has excellent electrochemical stability and corrosion resistance, can effectively promote the desorption of anode chlorine gas bubbles in the electrolysis process, and can effectively reduce the voltage of the low-temperature electrolytic aluminum system of ionic liquid.

This invention relates to the field of rare earth electrolytic smelting technology, specifically disclosing an automated production line for metal extraction from a three-cathode electrolytic furnace. The production line includes a three-cathode electrolytic furnace body, a three-cathode electrolysis and positioning system, a single-arm lightweight crucible-lifting robot, an automatic casting table, and a control unit. The three-cathode electrolysis and positioning system achieves dynamic and precise centering and positioning of the cathodes during electrolysis through asymmetrically arranged three-cathode components, current density detection, and a collaborative control algorithm. The single-arm lightweight crucible-lifting robot shares installation space with the three-cathode components and can efficiently extract the crucible after the cathode has slightly shifted. The automatic casting table is used to receive and cast molten metal. By integrating electrolysis, positioning, crucible lifting, and casting functions, this invention achieves automated continuous production of rare earth metals from electrolysis to metal extraction, effectively solving the problems of low efficiency, high energy consumption, insufficient automation, and high risks associated with manual operation in traditional processes, significantly improving production efficiency and safety.

The application discloses a zinc recovery device for zinc slag and a recovery method thereof, and relates to the technical field of zinc recovery.The zinc recovery device for zinc slag comprises a recovery main body, and further comprises: a lifting support fixedly installed on the recovery main body; a cathode module slidably installed at the output end of the lifting support, and provided with a weighing sensor between the cathode module and the lifting support; and an anode module detachably installed in the recovery main body, and the cathode module is inserted into the anode module, and the anode module is provided with a flushing module at the top end; the weighing sensor is arranged between the cathode module and the lifting support, the accumulation amount of zinc crystals on the surface of the cathode is accurately monitored, the electrolytic circulation mode and the flushing and stripping mode are automatically switched according to the comparison between the detection value and the preset threshold value, the stripping time can be controlled without manual intervention, the complicated operation of manual stripping and the damage to the cathode base body are avoided, the continuity of the electrolysis process is ensured, and the automatic operation efficiency of the device is greatly improved.

An electrolysis system having one or more electrolysers, a header line for providing a continuous flow of a fluid, one or more power supplies to provide electrical energy to the one or more electrolysers for the electrolysis process and one or more liquid-based first cooling devices for cooling the one or more power supplies. At least part of the fluid is diverted into the first cooling device for cooling the power supply.

The utility model discloses a kind of foldable hydrogen gas anode and cathode rib, applied in electrolytic cell technical field, including C plate, the bottom hinged of two C plate front side similar side has swing arm, the bottom hinged of swing arm front has protruding rod, and the side bolted of two protruding rod surface upper side far away has compression spring;The utility model is through bottom folding leg design, after unfolding, support ensures the stability when electrolytic cell operates, simultaneously under non-working condition, it can be quickly folded and contracted, greatly reduce the space occupied, convenient transportation and storage, avoid loose deformation, this design takes into account the convenience of reusability and equipment durability, reduce maintenance cost and reduce resource waste;It can be flexibly adapted to the installation height requirement of different equipment or site, lock fixed support angle when telescoping, ensure that rib structure is stable during electrolysis process, avoid displacement risk caused by vibration or load, while simplifying the locking operation process, simple operation is efficient.

This invention provides a parameter analysis system for the growth process of nitric acid electrolytic copper, relating to the field of electrolytic copper production technology. It includes a multi-source process data acquisition unit for collecting the operating status of the electrolytic cell during the nitric acid electrolytic copper production process to form a multi-dimensional process data stream; and an experimental analysis data fusion unit for accessing laboratory test data corresponding to the nitric acid electrolytic copper production batch, performing time alignment and data standardization on the laboratory test data to form a data set. This nitric acid electrolytic copper growth process parameter analysis system collects the operating status of the electrolytic cell through the multi-source process data acquisition unit, fuses it with laboratory test data, and analyzes the relationship between electrolytic process parameters and cathode copper growth behavior through a real-time correlation analysis model. This achieves real-time monitoring and optimization of the nitric acid electrolytic copper production process, improving the accuracy and efficiency of the production process.

The present invention relates to an electrode suitable for gas generation, particularly one comprising a metal substrate and a catalyst coating. Such an electrode can be used as an anode for oxygen generation in electrolytic processes, such as in the alkaline electrolysis of water.