51results about How to "Improve electrolysis current efficiency" patented technology

The invention discloses an industrial energy-saving high-frequency impulse electrolytic manganese device which comprises one or more phase-shifting transformers, one or more three-phase rectifier bridge assemblies, one or more power assemblies and a power master control unit, wherein the primary sides of the phase-shifting transformers are connected with the output end of a three-phase alternating-current supply and the secondary sides of the phase-shifting transformers are in one-to-one corresponding connection with the inputs of the three-phase rectifier bridge assemblies, respectively; the output ends of the three-phase rectifier bridge assemblies are correspondingly connected with the input ends of the power assemblies, and the output ends of the power units output high frequency impulse signals to electrolytic baths; the voltages output by the secondary sides of phase-shifting transforming units are determined according to the quantity of the electrolytic baths connected in series; when a plurality of the phase-shifting transformers are adopted, the phase-shifting transforming units are the phase-shifting transformers in multiple forms for reducing harmonic waves of an alternating current input current and harmonic amplitudes and current impulses of a direct current output voltage; the power master control unit is respectively connected with one or more power assemblies for current-sharing control of the power assemblies.

The invention discloses electric flocculation method and device for recovering and processing desulfurized wastewater. The electric flocculation method for recovering and processing desulfurized wastewater comprises the following steps of: collecting desulfurized wastewater to enter an electric flocculation reactor, then, carrying out solid-liquid separation, recovering the separated clear effluent water in a clinker-flushing system of an electric power plant or directly discharging the separated clear effluent water, conveying the sludge to dewater in a mud-processing system, and returning the effluent water of the mud-processing system to a water intake system. Compared with the prior art, the electric flocculation technology is adopted to substitute a complicated chemical method for recovering and processing the desulfurized wastewater, can effectively remove pollutants in the wastewater, reaches a heavy metal processing rate up to 95-99 percent, a chlorine-processing rate over 80 percent and removal rates of ammonian, and the like over 90 percent, greatly shortens the processing time, improves the processing efficiency and saves the investment cost. Moreover, the electric flocculation processing device has small size, extremely small floor occupation, good environmental-protection performance and low cost without additional flocculating agents.

The invention relates to a low-temperature aluminum electrolysis process and electrolyte. The electrolyte consists of Na3AlF6, K3AlF6, Al2O3, AlF3 and LiF; and the electrolysis temperature is between 850 and 910 DEG C, the coefficient of an anode effect is smaller than 0.1 time / tank day, and the anode current density is 0.5 to 1.2 A / cm2. The primary crystal temperature of the electrolyte adoptingthe component formula is low and changes comparatively slowly along with the changes of the components in favor of solving the problems of uneven tank bottom current, unstable tank voltage and the like caused by sharp raising of the primary crystal temperature of a melt and cathode crusting due to directional migration of Na+ and cathode enrichment. Besides, The K3AlF6 in the electrolyte can effectively increase the capability of the melt for dissolving the aluminum oxide, and solve the problem of deposition of the aluminum oxide at the bottom of a tank. Because the electrolysis temperature is lower, the heat loss of an electrolytic tank can be greatly reduced, and the energy-saving current efficiency is high. The low-temperature aluminum electrolysis process is simple and is easy to operate, the electrolyte has reasonable components, and the low-temperature aluminum electrolysis process can effectively reduce the aluminum electrolysis temperature, inhibit the cathode crusting in the process of aluminum electrolysis, improve the current efficiency of the aluminum electrolysis and reduce the energy consumption of the aluminum electrolysis, is suitable for industrial production, andcan replace the conventional aluminum electrolysis process.

The invention belongs to the field of non-ferrous metal metallurgy, and discloses a lower-insert electrolytic magnesium cell deslagging device and a deslagging method. The device comprises an L-shaped support, a push rod, a scraper and a guiding mechanism, wherein the L-shaped support comprises a handrail section and a working section connected with the handrail section; the guiding mechanism is arranged on the working section; the push rod is arranged in the guiding mechanism; the scraper is connected with the external end part of the push rod; a pulley system is arranged on the L-shaped support, and is connected with the push rod; the push rod can make a telescopic motion along the guiding mechanism under driving of the pulley system. According to the deslagging device, the push rod can make telescopic motion by utilizing driving of the pulley system, so that the scraper can go deep to the bottom of an electrolytic cell to remove residues at the circulating port, and the problem that a traditional long hook cannot be put into each graphite electrolytic hole can be solved, so that, on the one hand, the labor operation intensity can be reduced, and the electrolysis current efficiency can be greatly improved; and on the other hand, the device is applicable to multi-stage slots and has a practical application value.

The invention provides a method for improving the efficiency of electrolytic current. The method includes the steps that an electrolytic working solution is prepared and includes background electric conduction ions and electrolytic target metal ions, wherein the concentration of the background electric conduction ions is higher than that of the target metal ions; the electrolytic working solution enters an electrolyzing unit in a filling manner, and the electrolyzing unit is provided with a cathode room and an anode room; and the electrolytic working solution is controlled to pass through the part between the cathode room and the anode room in a directional and orderly manner and at a constant speed. The invention further provides a method for conducting metal electrodeposition through the above method and a metal electrodeposition device.

The invention belongs to the technical field of ion exchange membranes, in particular to a perfluorocarboxylic acid ion exchange membrane with a rough coating and a preparation method thereof. The perfluorocarboxylic acid ion exchange membrane with rough coating of the present invention is composed of a perfluorocarboxylic acid polymer layer and a functional surface coating, wherein the functional surface coating is located on the upper and lower surfaces of the perfluorocarboxylic acid polymer layer; The thickness of the perfluorocarboxylic acid polymer layer is 50-250 μm, and the thickness of the functional surface coating is 10nm-30 μm; the functional surface coating is a porous rough structure composed of a mixture of perfluoroionic polymers and metal oxides. structure. The perfluorocarboxylic acid ion-exchange membrane with a rough coating of the present invention can effectively reduce the cell voltage, reduce electrolysis energy consumption, and reduce production costs in a zero-pole pitch electrolytic cell under novel high current density conditions; the present invention also provides its preparation method.

The invention relates to a prebaked anode cell and the preparation method. It comprises following steps: (1) designing the shape for prebaked anode cell; (2) adding waste corner aluminum wire produced in aluminum production process during carbon anode preparation, to improve the conductivity for cabon anode, the addition amount is 1.5- 2.0%., the aluminum wire is filled into the micropores when it is conversed into liquid from solid during calcination, to increase the carrier for carbon anode base material. The invention is characterized by saved raw material cost, easy operation and management for thermal- insulating cover material, good flowability of filled material, increased currency efficiency by 0.5%, reduced resources consumption, 4.44 ton of recovery waste aluminum, and reduced carbon dioxide emmision.

The present invention discloses a process for preparing of Gd-Mg intermediate alloy by composite electrodeposition of fluoridated systems. Gd and Mg are electrochemically separated at the cathode of a round or square electrolytic cell with the mixture of 80-95 wt% commercial Gd2O3 (purity higher than 95%) and MgO (purity higher than 95) as the raw material and GdF3-LiF or GdF3-LiF-BaF2 molten fluoride salts as the electrolytic medium and then alloyed to produce Gd-Mg intermediate alloy with the weight percentage of Gd higher than 85 percent. The prepared rear earth magnesium alloy has high magnesium content and uniform ingredients. The present invention has convenient operation that the electrolysis is continuously conducted and the tapping is conducted by the siphon method; the recovery of rear earth is higher than 90 percent, and the exhaust gas meets the requirement of environment protection; the intermediate alloy has low impurity content and low production cost.

The invention discloses a double-layer aluminum cathode aluminum electrolysis cell cathode, and relates to the improvement on aluminum electrolysis cell production with aluminum as the cathode, with cryolite aluminum monoxide melt as an electrolyte and through a molten salt method. The double-layer aluminum cathode aluminum electrolysis cell cathode is characterized in that the structure of the cathode comprises an electrolysis cell body, two cathode partition walls, a cathode busbar and a cathode horizontal partition plate, wherein the two cathode partition walls are arranged in cell ledges at the two ends of the aluminum electrolysis cell body and fixedly connected with the inner walls of side cell ledges of the electrolysis cell body, the cathode busbar enters the electrolysis cell body from side channels formed by the cathode partition walls and the inner walls of the cell ledges at the ends of the aluminum electrolysis cell body, and the cathode horizontal partition plate is located in the electrolysis cell body and provided with molten aluminum through holes. According to the double-layer aluminum cathode aluminum electrolysis cell cathode, molten aluminum in which no cathode carbon block, no steel bar and no titanium boride coating exist is adopted as the cathode to replace a cathode composed of steel bars and a carbon block set. The defects that according to a traditional aluminum electrolysis cell, aluminum oxide deposit exists on cathode carbon blocks and cellular micro-batteries exist are eliminated. In the electrolysis production process, the problem that aluminum oxide and aluminum carbide which are deposited and generated at the furnace bottom pollute electrolysis molten aluminum does not exist.