38results about How to "Eliminate passivation" patented technology

The invention relates to a water-based zinc-manganese single flow battery; a positive electrode active material is an oxide of manganese, a metal composite oxide, a metal oxide or a carbon material, a negative electrode is a zinc electrode, an electrolyte solution is a nearly neutral aqueous solution containing a zinc salt and a manganese salt, positive electrode active ions and negative electrode active ions can coexist in one electrolyte solution, and an ion exchange membrane is not required for separating the positive electrode and the negative electrode; in processes of charging and discharging, the electrolyte solution constantly flows between an electrolyte solution storage tank and an electric pile through a pipeline under pushing of a liquid pump. During charging, zinc ions are deposited onto a negative electrode current collector from the electrolyte solution, the zinc ions and manganese ions are co-embedded into the positive electrode active substance at the same time, and the manganese ions are subjected to oxidation deposition; during discharging, the negative electrode deposited zinc is dissolved into the electrolyte solution, and the positive electrode manganese oxide is partially reduced and dissolved and is extricated to the electrolyte solution with the zinc ions simultaneously. The battery has the outstanding characteristics of simple manufacture, relatively high specific energy and specific power, low cost, long cycle life, environmental friendly and the like, and is widely applied in electric power, transportation, electronics and other fields.

Provided is a wall-flow filter coated with an SCR catalyst composition, wherein the catalyst composition contains transition metal promoted molecular sieve crystals, and wherein (i) the crystals have a mean crystalline size of about 0.5 μm to about 15 μm, (ii) the crystals are present in said composition as individual crystals, agglomerations having a mean particle size of less than about 15 μm, or a combination of said individual crystals and said agglomerations; and (iii) said molecular sieve is an aluminosilicate or a silico-aluminophosphate of a Framework Type having a maximum ring size of eight tetrahedral atoms.

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 discloses a method for passivating a cavity surface of a GaAs-based semiconductor laser, and the method comprises the following steps of putting a cleaved laser bar into solution of sulphuret of ammonia to be immersed, carrying out passivation on the laser bar and depositing a sulfur passivation layer on a front cavity surface and a back cavity surface of the laser bar; washing the bar by deionized water, dehydrating by acetone and isopropanol and blow-drying by nitrogen, installing a film plating frame and putting into an MOCVD instrument; vacuumizing the MOCVD instrument, baking to heat and introducing protective gas; increasing the temperature of a substrate, sublimating an amorphous sulfur layer in the sulfur passivation layer, introducing a growth source, and epitaxial-growing a layer of ZnSe passivation protective film on the sulfur passivation layer; and after cooling, taking out the film plating frame and putting into a plating machine, and plating anti-reflection film and high-reflection film on the passivation protective film of the laser bar. The method removes an oxide layer and a surface state on the cavity surface effectively and reduces the damage on the cavity surface.

The invention relates to a high-efficiency electrochemical reactor which comprises a sealed groove, wherein a plurality of pole plates are arranged in the groove in parallel, and stirring blades are arranged among the pole plates and are rotated through a rotating shaft. In the invention, one-dimensional contact between the water flow and each pole plate is changed into three-dimensional contact,thereby achieving reasonable structure and sufficient reaction.

A method for producing a powder includes forming a layer of a raw material powder, and performing one of an operation of nitriding the raw material powder of the layer in an atmosphere containing nitrogen or an operation of carbonizing the raw material powder of the layer in an atmosphere containing carbon.

The invention belongs to the technical field of agricultural water quality optimization, and in particular discloses an agricultural water quality optimization agent. The agricultural water quality optimization agent comprises the following component by weight portion: 1 to 50 portions of citric acid, 5 to 50 portions of penetrant JFC, 0.5 to 10 portions of azone, and 1 to 20 portions of polyaluminium chloride. According to the weight portion, the agent also comprises 5 to 50 portions of dodecyl benzene sulfonic acid and 0.5 to 2 portions of emulsified silicone oil. The agricultural water quality optimization agent has the advantages that the agent can not only purify the water quality, but also reinforce the drug effect, thereby solving the problems of halfway weed removal, incomplete pest elimination and uncontrollable diseases when fruit farmers spray pesticides for controlling weeds, pests and diseases.

The invention discloses a photoelectric energy method for promoting the biological metallurgical leaching rate of microorganisms Ar4. The invention provides an application of photoelectron catalysis or external constant potential electrons in improving a leaching rate of target metal or target metal ions leached from sulfide metal ore by using Metallospharomyces acidophilus sp. Ar4CGMCC NO.3402 ora culture thereof or a fermentation product thereof or a suspension thereof. According to the photoelectric energy method for promoting the biological metallurgical leaching rate of the microorganisms Ar-4, under the catalytic action of simulated photoelectrons, the leaching rate of the M.cuprina Ar4 to copper ions and iron ions in the chalcopyrite is increased, and the good biological metallurgical capacity is achieved.

The invention relates to the technical field of ceramic processes, and particularly discloses a glazed tile surface treatment method and application. The glazed tile surface treatment method comprises the following steps of mixing potassium salt, an adsorbent and an activating agent, and heating to a molten state to obtain a molten salt mixture, immersing the glazed tile in the molten salt mixed solution for surface treatment and then taking out, and acquiring the glazed tile with the surface treated. The glazed tile is immersed in the low-temperature molten salt mixture, alkali metal ions in the glaze layer and alkali metal ions in the molten salt mixture are subjected to ion exchange due to mutual diffusion, and pressure stress is generated on the surface of the glaze layer, so that the wear resistance of the glaze surface is enhanced. The adsorbent can adsorb impurity ions in the glaze layer, the activator is used for eliminating passivation of the potassium salt in the ion exchange process, so that the ion exchange rate is further improved, the wear resistance of the glazed tile is jointly enhanced through the synergistic interaction of the potassium salt, the adsorbent and the activator, and the glazed tile is suitable for surface treatment of glazed ceramic.

The invention relates to the technical field of hydrometallurgy, and provides a method for synergistically strengthening sulfuric acid leaching of chalcopyrite, which comprises the following steps: S1, crushing and grinding chalcopyrite ore blocks to obtain a leached ore sample; s2, a 0-9 g/L Fe < 2 + > solution is added into the leached ore sample, then 0.1-1 mol/L NH4Cl and 10-120 mg/L cetylpyridinium bromide (a pyridine heterocyclic quaternary ammonium salt type cationic surfactant) are added, and the initial pH of a leaching solution is adjusted to be 1.5-3.5 with dilute sulphuric acid; and S3, under the conditions of a certain temperature and a certain rotating speed, the leachate is placed in an oscillator to be oscillated and leached for 10-15 days. By adding NH4Cl and cetylpyridinium bromide, the leaching amount of the copper ions in the chalcopyrite is increased by 0.63-2.75 times, the leaching rate of the chalcopyrite can be remarkably increased, and the method has important significance on development and utilization of low-grade chalcopyrite resources.

The invention relates to an electrolysis phosphorous removal device and belongs to the technical field of water treatment. The electrolysis phosphorous removal device comprises a water inlet area, an electrolysis area and a water outlet area, wherein the electrolysis area comprises a metal electrode, an ultrasonic system and an electrode controller; the water outlet area comprises an aerating system; the metal electrode adopts a circular electrode piece and is fixed on a rotation shaft; the ultrasonic system comprises an ultrasonic generator and an ultrasonic vibration piece; the electrode control system is used for periodically switching a positive pole and a negative pole of the electrode. According to the device, the positive pole and the negative pole of the electrode are washed by ultrasonic wave and are periodically switched; the deposition of the surface adsorbate of the electrode and the generation of oxide are effectively reduced; the electrode passivation is eliminated; by virtue of the rotary operation of the circular electrode, the electrode can be uniformly utilized; the electrolysis utilization rate is increased; the device is full-automatic in control, free of manual operation, free of addition of chemicals and excellent in phosphorous removal effect.

The invention relates to the field of technical field of industrial sewage treatment, in particular to a device for facilitating automatic regeneration of an iron-carbon micro-electrolysis material. The device comprises an outer box and roller supports, the roller supports are welded at the inner bottom of the outer box, a roller mounting plate is connected with the ends, far away from the ground,of the roller supports through screws, a roller mounting frame is welded at one end, far away from the ground, of the roller mounting plate, a roller is connected in the roller mounting frame in a sleeving manner, a roller sliding way is connected on the outer wall of the roller in a retaining manner, a rotating barrel is welded on the inner wall of the roller sliding way, a sewage discharging hole is formed in the rotating barrel, a turbine is welded on the outer wall of the rotating barrel, and a worm is fixedly connected on the outer wall of the turbine. According to the device, the iron-carbon micro-electrolysis material can be automatically regenerated, deactivating and hardening factors of the iron-carbon micro-electrolysis material are removed, manual taking out of the iron-carbonmicro-electrolysis material is omitted, iron-carbon micro-electrolysis material cannot be wasted, sewage is efficiently and stably treated, and stable effluent quality is ensured.

The invention relates to a method and a device for electrolytic oxidation reduction for a self-cleaning composite graphite electrode and belongs to the technical field of electrochemical electrolysis. The device is a periodic turning electrolyzer comprising an electrolysis bath, a periodic turning controller and a direct current supply system, wherein the positive electrode and the negative electrode are made of insoluble metal; a graphite complex pole is arranged in the middle; and the periodic turning controller realizes the circulating operations of power turn-on, power turn-off, turning power turn-on and power turn-off. The electrolysis method comprises the following steps: (1) materials are fed into the electrolysis bath, wherein the electric conductivity for the electrolyzed materials is larger than 0.1 S/m, and the pH value is adjusted to be 6 to 12; (2) the periodic turning controller is adjusted; and (3) power is turned on to carry out electrolytic oxidation reduction reaction, wherein the electric current density is 5 to 80 A/m<2>. The method and the device can realize self-cleaning of the electrode in the electrolytic oxidation reduction process, improve the electrolysis efficiency and reduce the electrolysis energy consumption and are easy for industrial implementation.

There is disclosed an ink jet recording head comprises a plurality of recording elements for applying an energy to discharge ink, a recording element driver for driving the recording elements, a control circuit for controlling the recording element driver, and a high resolution reference signal generator using a plurality of input signals continuously given from the outside in a predetermined period and generating a reference signal which has a period shorter than the predetermined period, so that recording control is performed by supplying the reference signal to the control circuit. The bluntness of a pulse waveform by the transmission of the signal via a cable, and a radiation noise generated from the cable can be inhibited, and the ink jet recording head can cope with high speed and a multiplicity of nozzles.

The invention relates to a rapid charging device and its applicatino to the electric vehicle and other appliance driven by electrical motor. The structure of high-frequency inverter and transformation rectifying circuit is adopted in the rapid charging device. Cooperating with car borne electrical motor and automatic charging controller, the invented device installed on a car can realize AC-DC charge and on-line independent charge. The device can be used in electric motorcycle, bicycle, sliding plate cart as an integral part. The invented device provides features of safety and reliability.