46results about How to "Not easy to passivate" patented technology

The present invention belongs to the field of iron and steel material surface chemical and heat treatment technology. The technological process is that before hot dipping, the workpiece surface is filming treated with the inactivation solution compounded by using CrO3 0.2-5 wt%, K2MnO4 0.05-3 wt%, NaNO2 0.05-6 wt% and water, at room temperature for 0.5-5 min. The present invention features the repeated use of the inactivation solution, good filming effect, simple technological process, low cost and capacity of forming smooth, level plated coating without pinhole and leakage.

The invention discloses magnetic nano ferrum-carrying ordered mesoporous carbon and a preparation method and application thereof. The magnetic nano ferrum-carrying ordered mesoporous carbon is prepared by adopting a nano co-casting one-step method. The method comprises the following steps: mixing saccharose, ferric chloride hexahydrate and sulfuric acid solution, adding the mixed solution to ordered mesoporous silicon SBA-15, and carrying out two times of heat treatment, high temperature carbonization and desilicication treatment to obtain the magnetic nano ferrum-carrying ordered mesoporous carbon. The preparation method disclosed by the invention has the characteristics of being simple in steps, low in cost, high in production efficiency, and easy for large-scale production; the prepared material has relatively large specific surface area and pore volume and strong magnetism, can effectively remove bisphenol A in water, not only is large in adsorbing capacity for bisphenol A and high in removal rate of bisphenol A, but also is wide in pH application scope, simple in operation, short in treatment period, and easy for regeneration, and is favorable for efficient automated design in wastewater treatment.

The invention provides an environment-friendly micro-electrolysis ceramsite and a preparation method thereof. The environment-friendly micro-electrolysis ceramsite is prepared from the following raw materials in percentage by mass: 30 to 40% of nanometer zero-valent iron, 20 to 30% of activated carbon, 20 to 30% of river and lake sludge, 5 to 10% of dispersant, 5 to 10% of adhesive, 5 to 10% of perforating agent, 5 to 10% of catalyst, and 0.1 to 0.5% of graphene. The environment-friendly micro-electrolysis ceramsite has the advantages that by utilizing the river and lake sludge to prepare theenvironment-friendly micro-electrolysis ceramsite, the resources of the river and lake sludge can be utilized; the specific surface area is large, the adsorption property is good, the mechanical strength is high, the service life is long, the physical and chemical properties are stable, the easiness in passivating and caking is avoided, the activating and reutilization effects are realized, and the like; the electrochemistry, oxidized reduction, physical adsorption and flocculent precipitation methods can be integrated, and the biodegradability of the wastewater is improved while the wastewater is treated.

The invention discloses a method for removing copper, cadmium, nickel and cobalt out of a zinc sulfate solution through one step. The method comprises the steps that manganese metal powder and/or manganese-based alloy powder are/is added into the zinc sulfate solution containing copper, cadmium, nickel and cobalt, wherein the temperature of the zinc sulfate solution ranges from 45 DEG C to 70 DEG C, and the pH of the zinc sulfate solution is larger than 4.0; and stirring is carried out for a reaction, after the reaction is finished, filtering separation is carried out, and the zinc sulfate solution with the contents of copper, cadmium, nickel and cobalt all lower than 0.8 ppm is obtained. According to the method, copper, cadmium, nickel and cobalt can be efficiently removed out of the zinc sulfate solution through one step at the same time, no impurities endangering zinc electrolyzing are introduced, the technological process is simple and low in cost, no complex and special equipment is needed, and good industrial application prospects are achieved.

The invention discloses a wastewater electrochemical treatment device. The device is mainly characterized in that two pole plates are cylindric and one pole plate is sleeved outside the other pole plate; a drifter collector plate is arranged at the upper ends of wastewater electrochemical treatment cavities formed by the two pole plates oppositely; and electric brush assemblies are arranged in the electrochemical treatment cavities. The device is also characterized in that an electric controller with a PLC (programmable logic controller) is used for realizing automatic control of the technological parameters and the working process. The device has the characteristics of reasonable structure, small volume, difficulty in passivation of pole plates, quick electrochemical reaction, good water treatment effect, high efficiency, low operation cost and the like, is widely applicable to industrial wastewater and domestic wastewater treatment and can be used for purification of blue-green algae bloom.

he invention provides a solar cell module. The solar cell module comprises a backboard layer (10), a first packaging material layer (20), a cell sheet layer (30), a second packaging material layer (40) and a glass layer (50) which are successively superposed. The solar cell module also comprises a barrier layer (60) used for preventing metal cations of the glass layer (50) from entering into the cell sheet layer (30). The barrier layer (60) is arranged between the glass layer (50) and a second packaging material layer (40). By using the solar cell module of the invention, a problem of a PID phenomenon existing in the solar cell module in the prior art is effectively solved.

The invention provides a solar cell module. The solar cell module comprises a backboard layer (10), a first packaging material layer (20), a cell sheet layer (30), a second packaging material layer (40) and a glass layer (50) which are successively superposed. The second packaging material layer (40) comprises an upper packaging material layer (41), a lower packaging material layer (43) and a barrier layer (42) used for preventing metal cations of the glass layer (50) from entering into the cell sheet layer (30). The barrier layer (42) is arranged between the upper packaging material layer (41) and the lower packaging material layer (43). By using the technical scheme of the invention, a problem of a PID phenomenon existing in the solar cell module in the prior art is effectively solved.

A pesticide composition containing 2-cyano-3-amino-3-phenylacrylic acetate and hymexazol belongs to the technical field of pesticide compounds. The pesticide composition contains the 2-cyano-3-amino-3-phenylacrylic acetate and the hymexazol, which are at a weight ratio of (1:90)-(90:1). According to the pesticide composition containing the 2-cyano-3-amino-3-phenylacrylic acetate and the hymexazol, the 2-cyano-3-amino-3-phenylacrylic acetate and the hymexazol are reasonably and effectively compouned, as a result, the defects that the broad-spectrum performance of the 2-cyano-3-amino-3-phenylacrylic acetate is poor and the hymexazol has a poor effect on fusarium can be overcome, the pesticide efficacy can be remarkably improved, risks caused by pesticide resistance can be lowered, and a remarkable synergy effect is realized.

The invention discloses a device and a method for electrolysis dephosphorization of small/medium-size sewage treatment equipment. The device comprises an electrolysis plate, an adjustable power supplydevice, a time controller, an intermediate relay and a volt-ammeter; the adjustable power supply device is used for supplying variable power voltage to the electrolysis plate and controlling volume of electrolyzed iron ions or aluminum ions; the time controller is used for supplying a time signal to the electrolysis plate and is used for automatically changing anode and cathode of the electrolysis plate through the adjustable power supply device; the intermediate relay is used for sending the time signal and a power signal outputted by the adjustable power supply device to the electrolysis plate; the volt-ammeter is used for sampling real-time voltage and current of the electrolysis plate in real time. According to the invention, total phosphorus can be effectively removed by placing thedevice for electrolysis dephosphorization on the front side of an anoxic zone, electrolyzing feeding water and reflux liquid in high oxygen content of system and adopting a multi-level precipitating structure and a special filler arranged in the anoxic zone and a multi-level baffling manner. Energy consumption can be effectively saved and maintenance period can be prolonged in the manner of adjusting voltage and current and automatically switching anode and cathode.

The invention discloses a method for separating and recovering a tin coating of a PCB by a two-segment method. The method comprises the following steps: 1) a first segment: an anode plate and a cathode plate are placed in an electrolytic bath filled with electrolyte and introduce direct current for electrolysis, and partial tin coating on the surface of the PCB is removed, wherein the anode plateis formed by combining the PCB and a conductive hard metal mesh, and the electrolyte comprises tin salt, acetic acid, acetate, a complexing agent and an additive; 2) a second segment: the PCB treatedin the step 1) is placed in an HNO3-Fe(NO3)3 system, the residual tin coating on the PCB is removed, and the qualified PCB is obtained. According to the method, the tin coating of the PCB can be efficiently, cleaned, safely and conveniently separated, most of tin can be recovered in the form of metal, the metal substrate feature, thickness and performance of the obtained PCB are good, and the PCBcan meet factory requirements.

The invention discloses a filament cutting machine and belongs to the technical field of product machining device design. The filament cutting machine comprises transmission cases, a blade, pin shafts, a blade fixing base, nuts, a conveying belt, a coiling block shaft and a lathe bed; the transmission cases are arranged on the portions, close to the upper portion, of the left side and the right side of the lathe bed; a belt transmission device is arranged in the transmission case on the right side; the coiling block shaft is sleeved with the conveying belt; a belt pulley is installed at the right end of the coiling block shaft; movement of the belt pulley is transmitted by a motor through the belt transmission device in the corresponding transmission case; the blade is fixed to the blade fixing base through a bolt; and the blade fixing base and the pin shafts are fixed together through the nuts above the pin shafts. According to the filament cutting machine, the service life of the blade is long, the height of the blade can be adjusted, the pin shafts can move up and down, finally, the blade is driven to move up and down, cut bean filaments is very long, the conveying belt is not prone to damage or deformation in the filament cutting process, the cut bean filaments are uniform in width, and the bean filaments are convenient to collect.

The invention relates to small-sized efficient energy-saving over-current type equipment for an electric flocculation process. The small-sized efficient energy-saving over-current type equipment is characterized in that a tubular type electrode A, a tubular type electrode C and a tubular type electrode E are arranged on an electrode fixed tray A, and a tubular type electrode B and a tubular type electrode D are arranged on an electrode fixed tray B, wherein the electrode fixed tray A and the electrode fixed tray B are combined up and down to form a body; a sleeve barrel is arranged outside theelectrode fixed tray A and the electrode fixed tray B; a sleeve cover A is mounted on the bottom of the electrode fixed tray A; a sleeve cover B is mounted on the top of the electrode fixed tray B; awater inlet is formed in the central position of the electrode fixed tray A; a water outlet is formed in one side of the electrode fixed tray B; a wiring end A is arranged in the water inlet; and a wiring end B is arranged in the water outlet. The small-sized efficient energy-saving over-current type equipment has the beneficial effects that: the whole set of process equipment has the characteristics and the advantages of a small size, high efficiency, energy conservation, not-liable-to-passivate electrodes, automatic flushing and stirring, adjustable current amount and wastewater (fluid) flow ratio, high efficiency, stability and the like.

The invention puts forward an electrochemical sulfide removal reactor, which comprises a reaction tank, a sewage inlet tube, an aeration stirring air-tube and a backwashing air-tube. A bearing plate and a desulfuration filter material are arranged inside the reaction tank. A head end of the sewage inlet tube is positioned outside the reaction tank, and a tail end of the sewage inlet tube extends to the bottom of the reaction tank. The tail end of the sewage inlet tube is provided with a water distributor hole. A head end of the aeration stirring air-tube is positioned outside the reaction tank, and a tail end of the aeration stirring air-tube extends to the bottom of the reaction tank. The tail end of the aeration stirring air-tube is provided with an aerator pipe hole. A head end of the backwashing air-tube is positioned outside the reaction tank, and a tail end of the backwashing air-tube extends to the bottom of the reaction tank. The tail end of the backwashing air-tube is provided with a backwashing pipe hole. The invention also discloses a sewage treatment method using the electrochemical sulfide removal reactor. By the use of the electrochemical sulfide removal reactor, sulfides in sewage are effectively removed; there is less chemical side reaction; no toxins are generated; action time is short; floor area is small; operating expenses are low; and repairing and maintenance are convenient.

The invention discloses a preparation method of a blade special for cigar scissors or cigar knives and the blade. The blade is made of hard alloy or metal ceramic; when the blade is made of hard alloy, the thickness of the blade is larger than or equal to 0.5 mm and smaller than or equal to 0.8 mm or larger than 0.8 mm and smaller than or equal to 1.5 mm. When the blade is made of metal ceramic, the thickness of the blade is larger than or equal to 0.5 mm and smaller than or equal to 1 mm or larger than 1 mm and smaller than or equal to 1.5 mm. The special blade for the cigar scissors or the cigar knife has the advantages that the surface smoothness of a grinding surface is high, the strength, the hardness, the wear resistance and the toughness are excellent, and enough cutting edge sharpness can be kept while high-fiber tobacco shreds are cut; the surface of the notch is smooth, so that the service life, the attractiveness and the use satisfaction degree of a user of the cigar knife or the cigar scissors can be remarkably improved.

The invention relates to a silicon carbide material polishing method. The silicon carbide material polishing method comprises the following steps that S1, 800-mesh silicon carbide micro powder, 1200-mesh silicon carbide micro powder and 1500-mesh silicon carbide micro powder are evenly stirred with a non-aqueous solvent mixed solution, and silicon carbide polishing slurry of different specifications is obtained; S2, a silicon carbide component needing to be polished is filled with silicon carbide particle slurry prepared from 800-mesh silicon carbide powder, the internal silicon carbide slurry is subjected to high-speed rotary grinding through a stirrer to be subjected to rough polishing, and surface impurities and attachments are ground to be flat; S3, silicon carbide slurry prepared from 1200-mesh silicon carbide powder is poured into the polished component, high-speed rotary grinding is conducted, and medium polishing is conducted; S4, silicon carbide slurry prepared from 1500-mesh silicon carbide powder is poured into the polished component, high-speed rotary grinding is conducted, and fine polishing is conducted; and S5, diamond powder is used for repairing polished flaws. According to the polishing method, the surface roughness of the ultra-fine chemical component can be reduced, and the polished surface smoothness is improved.

The invention relates to a weeding composition, which comprises, by mass, 1-60% of triclopyr raw pesticide, 1-20% of a salt forming agent, 1-30% of a surfactant and the balance of a filler. Accordingto the invention, the composition can obviously improve the deposition and penetration effects of the drug on the surface of plants, and enhance the ability of the drug to penetrate through organellemembrane structures, so that the composition has higher weeding activity than the existing triclopyr and butoxyethyl triclopyr.