473results about How to "Stop pollution" patented technology

The invention discloses a spraying liquid beam electrolytic-laser compound manufacturing method and device, which comprises the following steps: utilizing layer generating device to produce laser beam on the working piece, manufacturing hole, seam and groove, generating high-speed spraying liquid removing material with the same shaft of laser beam through spraying liquid beam device. The device contains layer, working piece assembling chuck, power and spraying liquid beam device, wherein the spraying liquid beam device concludes assembling seat of spraying device, insulating switching seat, cathode, focal lens, protective lens, insulating sleeve and sprayer.

The invention relates to a manufacturing process of a low-carbon high-strength bolt for a track. The process comprises the following steps of: (1) selecting a material, namely selecting low-carbon alloy steel with chemical component 20MnTiB; (2) thermally rolling the alloy steel into coil rod steel, and performing cold drawing treatment to achieve the size of the rod part of the bolt; (3) formingthe head and the rod part of the bolt by adopting local heating and forging; (4) machining external threads of the bolt; (5) quenching the whole bolt; (6) tempering the whole bolt; and (7) performingblackening treatment. The process has the advantages that: because the tempering temperature belongs to a tempering low temperature, power consumption is saved; meanwhile, water-soluble quenching liquid is adopted in low-carbon high-strength bolt quenching, so pollution of quenching oil to the environment is avoided; and the adopted low-carbon alloy steel material is 300 yuan per ton lower than the conventional material, so the production cost is reduced.

The invention discloses a method for extracting rare earth from oxidized neodymium iron boron waste. The method comprises the following steps of: mixing the neodymium iron boron waste with water and then grinding; oxidizing the ground neodymium iron boron waste; performing primary grinding of the oxidation product; adding acid and leaching; separating solid from liquid; extracting to remove iron; chloridizing rare earth; extracting and separating rare earth; extracting to remove aluminum; precipitating; and firing. By adopting the method disclosed by the invention to recover the rare earth, the rare earth recovery rate is increased by 5-8%; and moreover, the use value of the recovered rare earth is increased, the production cost of further processing is lowered, the problem of muddy objects of the molten salt when in single rare earth electrolysis is effectively solved, the electrolysis efficiency when in the electrolysis of the rare earth metal is improved, the power consumption can be effectively reduced, and the content of the non-rare earth elements in metal such as C, S, O and the like is reduced.

The invention discloses a continuous type alloy steel heat treatment line, solving the problem existing in small-section ultra-long material workpiece heat treatment. The continuous type alloy steel heat treatment line is formed by connecting a continuous type roller hearth heating furnace, a roller hearth type quenching groove and electric heating continuous type roller hearth furnace in series.The heat treatment process comprises the following steps of: carrying out austenitization heating on a workpiece in the continuous type roller hearth heating furnace, rapidly discharging after reaching the process time and then entering into the roller hearth type quenching groove; automatically generating a non-continuous water cold process according to the chemical components and different standards of the workpiece, and rapidly cooling through an immersion or spray mode; and tempering the workpiece which is cooled to room temperature according to the process requirement. The continuous type alloy steel heat treatment line has the advantages that: 1, the quenching, solid solution and normalizing continuous heat treatment of the small-section ultra-long material workpiece are achieved, and the heat treatment is completed on roller beds which are located on the same height and axis; 2, a quenching medium is stable in the rising process, and the workpiece can be simultaneously cooled in the length direction; and 3, fire danger and lamp black pollution are precluded by adopting non-continuous water quenching.

A plasma confinement device used to plasma treatment device is arranged between the treatment zone and the exhaust zone thereof. The plasma confinement device includes an electric element, the electric element is provided with a plurality of channels which are used for controlling the output of used reaction gas and byproduct gas, and electric counteracting electrification particles which pass through the channels, the plasma discharge is basically confined in the treatment zone. The treatment device also includes electric earthing elements are arranged under the electric elements and are insulated from the electric elements. The plasma confinement device of the invention reduces the unhoped plasma which is formed out of the plasma treatment zone thereof, the pollution of the plasma treatment device cavity is solved.

The invention discloses a film formation drilling fluid applicable to a coal-bed gas well and a preparation method thereof. The film formation drilling fluid comprises the following components in percentage by mass: 0.1-0.3% of tackifying agent, 2.0-5.0% of film forming agent, 0.1-0.3% of coated flocculant, 0.2-5.0% of blocking agent, 1.0-10.0% of plugging agent, 0.05-0.2% of alkalinity regulator and the balance of water. By adopting the film formation drilling fluid disclosed by the invention, a low-permeability blocking layer can be quickly formed at the coal pore throat so as to prevent the fluid or solid phase from entering the coal bed, effectively prevent and slow down fluid loss and prevent the easily-hydrated substances in the coal cleat and crack from expanding, dispersing and polluting the reservoir stratum.

The invention discloses a copple with an Y2O3 erosion-resistant coating and a method for preparing the Y2O3 erosion-resistant coating with a slip casting moulding process. The copple with the Y2O3 erosion-resistant coating is formed by preparing an Y2O3 erosion-resistant sizing agent on the inner wall of the copple base with the slip casting moulding process, forming the Y2O3 erosion-resistant coating with depth from 0.5 mm to 8 mm. The Y2O3 erosion-resistant sizing agent is obtained by evenly mixing multilevel Y2O3 raw material powder, dispersant, adhesive and deionized water. The copple with the Y2O3 erosion-resistant coating has melting temperature from 1600 DEG C to 2000 DEG C, thereby being capable of meeting melting of high-activity metal alloy such as Ti alloy, Nb alloy, rare earth alloy and alloy with high-activity elements of Ti, Al, Nb, Hf, rare earth, and the like.

The invention discloses a storing and fresh preserving method for white flammulina velutipes, which pertains to the technical field of storage and fresh preservation of agricultural commodity. The method comprises the steps of: (1) harvesting, finishing and grading of the white flammulina velutipes; (2) preparation of anti-browning inhibitors and the treatment thereof; (3) treatment of low temperature and dryness; (4) vacuum packaging; (5) storage at ice temperature until delivering out of a storehouse and distributing to the market. The white flammulina velutipes stored by the method is characterized by reducing the rotting rate, enzymatic browning and the respiration rate, lengthening the preservation period which reaches 20 to 30 days, keeping the original color, fragrance, taste, shape and nutrition, etc., and reaching a commodity rate over 95 percent. The anti-browning inhibitors are the food additives which are permitted by the country and are safe and reliable. The method of the invention can be widely applied in the fields of production, storage and fresh preservation and operation of the flammulina velutipes.

The invention provides a novel ecological bean curd and a preparation method of the bean curd. The ecological bean curd takes probiotics fermentation liquor as a coagulation point preparation and is prepared from point system soybean milk. The probiotics fermentation liquor is made by adding and fermenting probiotics raw powder in the soybean milk. The novel ecological bean curd is milky white incolor, strong in elasticity, pure in bean smell, fine in taste and rich in quality protein, ferrum, calcium, phosphorus, magnesium and other various trace elements needed by human body. Without use of plaster, brine and other substances, the novel ecological bean curd is a popular green nutritional food being purely natural, safer and healthier.

The clean Ta/Nb ore converting process includes decomposing Ta/Nb ore in KOH and molten salt, diluting and separating decomposed product to obtain high concentration KOH solution and solid phase connecting potassium titanate/niobate, hot water leaching and separating potassium hexatitanate/hexaniobate solution and iron-manganese slag precipitate containing insoluble potassium metatitanate/metaniobate; regulating pH value of hexatitanate/hexaniobate solution to alkali to obtain hexatitanate/hexaniobate crystal and reusable crystalline mother liquid; and decomposing potassium metatitanate/metaniobate and iron-manganese slag with HCl solution to obtain metatitanate/metaniobate crystal. The said process has no fluorine ion pollution and high ore decomposing rate, and may produce potassium titanate/niobate as intermediate for producing various Ta/Nb products.

A black ceramic plate prepared by natural minerals and vanadium tailings comprises, by weight, 0-10% of the extracted vanadium tailings, 0-10% of chromite, 0-10% of manganese oxide ore, 58-65% of clay, 9-20% of feldspar, 5-10% of sand, 1-3% of additives and the balance inevitable trace impurities. A preparation method of the black ceramic plate includes the steps: drying for dewatering, crushing and sieving 0-10% of the extracted vanadium tailings, 0-10% of the chromite and 0-10% of the manganese oxide ore to form mixed powder; mixing and proportioning the mixed powder with 58-65% of the clay, 9-20% of the feldspar, 5-10% of the sand and 1-3% of the additives to prepare mud pellets with the water content of 14%-19%, forming by dry pressing or wet extrusion; and drying a formed green body in a drying kiln of a production line at the temperature of not more than 150 DEG C, and sintering at the temperature of 1000-1200 DEG C after drying so that the black ceramic plate is prepared.

The invention provides a crucible and a preparation method thereof. The crucible comprises: a crucible body, a first coating, a second coating and a third coating, wherein the crucible body comprisesa bottom wall and a side wall; the first coating layer is arranged on the bottom wall and the side wall for preventing metal impurities from diffusing to crystalline grains in the crucible body, the second coating is arranged on the outside of the first coating layer on the side wall, the second coating layer is used to assist in nucleating the crystalline grains within the crucible body; the third coating is arranged on the outside of the first coating layer on the bottom wall, the third coating layer is used to assist in separating the crystalline grains within the crucible body from the crucible body. The crucible of the invention can effectively reduce diffusion of the metal impurities in the crucible body into polycrystalline crystals located in the crucible body, so that purity of the prepared polycrystalline silicon is high.

The invention relates to a preparation method of a ceramic membrane filter element for treatment of printing and dyeing wastewater, and belongs to the technical field of sewage treatment. The preparation method includes: adding certain admixture to spherical bauxite aggregate, preparing a ceramic filter support by cold isostatic forming and near-net-shape forming, preparing uniform and stable transparent TiO2 sol by sol-gel technology, immerging the prepared ceramic filter support into the TiO2 sol, and drying and performing heat treatment to obtain the ceramic membrane filter element, namely, using the spherical bauxite aggregate to prepare single-channel ceramic filter support, and coating TiO2 film on the basis of the single-channel ceramic filter support. Compared with the prior art, the ceramic membrane filter element prepared by the method is in a single-channel tubular structure, large in aperture, less prone to blocking, and easy to clean. In addition, water flux is improved greatly, and membrane pollution and flux attenuation can be avoided effectively.

The invention discloses a copple with an Al2O3 erosion-resistant coating and a method for preparing the Al2O3 erosion-resistant coating with a slip casting moulding process. The copple with the Al2O3 erosion-resistant coating is formed by preparing an Al2O3 erosion-resistant sizing agent on the inner wall of the copple base with the slip casting moulding process, forming the Al2O3 erosion-resistant coating with depth from 0.5 mm to 10 mm. The Al2O3 erosion-resistant sizing agent is obtained by evenly mixing multilevel Al2O3 raw material powder, dispersant, adhesive and deionized water. The copple with the Al2O3 erosion-resistant coating has melting temperature of 1650 DEG C, thereby being capable of meeting melting of the alloy of high-activity metal including Ti, Al, Nb, Hf, rare earth, and the like, such as the melting of various nickel base high-temperature alloy.

The invention relates to a fluid dynamic pressure type magnetic liquid seal device and belongs to the field of mechanical engineering seal. The fluid dynamic pressure type magnetic liquid seal device comprises a screw (1), an end cover (2), a first seal ring (3), a circulation tube inlet path (4), a magnetic liquid circulation system (5), a circulation tube outlet path (6), a second seal ring (7), a left pole shoe (8), an annular permanent magnet (9), a right pole shoe (10), a third seal ring (11), a shell (12), a magnetism isolation ring (13), a threaded end cover (14), a shaft sleeve (15), a first set screw (16), a movable ring (17), a second set screw (18), a fourth seal ring (19), a fifth seal ring (20), a wedge-shaped fluid slot (21) and a shaft (22). The fluid dynamic pressure type magnetic liquid seal device has the advantages that the high pressure resistance feature of fluid dynamic pressure seal and the zero leakage feature of magnetic liquid seal are utilized, fluid dynamic pressure magnetic liquid seal zero leakage is achieved, and the application range of magnetic liquid seal is widened.

The invention discloses a pyrite mine abandoned land ecological restoration method. The method comprises the following steps that 1, a to-be-treated field is excavated to obtain a backfill pit and a to-be-repaired acidic matrix; 2, a modifier is prepared, the prepared modifier is mixed with the to-be-repaired acidic matrix, and a repaired acidic matrix is obtained after maintenance; 3, ashlar is laid in the backfill pit as an isolation flow guide layer; 4, the repaired acidic matrix is backfilled into the backfill pit paved with the ashlar, and vegetation is planted after the backfill pit is covered with surface soil. According to the pyrite mine abandoned land ecological restoration method, slaked lime and pig manure are used for acid improvement and heavy metal stabilization, the ashlarlayer is used for acidic barrier, and then purchased planting soil and the vegetation restoration are used for achieving revirescence, so that the mine abandoned land environment problem is truly solved, and resource utilization is achieved.

The invention provides a nano fiber composite membrane. The nano fiber composite membrane comprises a mussel bionic polymer serving as a surface hydrophilic layer and a super-hydrophobic layer locatedin the polymer and in the form of polymer fiber. The composite membrane is obtained by conducting super-hydrophobic modifying treatment on the static spinning main body and conducting hydrophilic modifying treatment on the upper surface and the lower surface. The static spinning main body is obtained by adopting a hydrophobic polymer. Super-hydrophobic modifying treatment comprises the steps thatthe membrane prepared through static spinning is dipped into a solution containing a super-hydrophobic modifier. Hydrophilic modifying treatment comprises the steps that the upper surface and the lower surface of the static spinning main body subjected to super-hydrophobic modifying treatment is coated with the mussel bionic polymer hydrophilic modifier. The preparation method solves the problemof wetting and pollution of the membrane in the prior art of membrane distillation, the process is simple, the effect is outstanding, and the membrane can be widely applied to separation and concentration process in the field ofincluding biology, medical treatment, electronics and food.

The invention provides direct-current intelligent coating equipment used for a rail. The direct-current intelligent coating equipment comprises a box body, a photovoltaic energy storage assembly and a coating plate assembly. The box body is internally provided with a control box and a grease storage box. The control box is internally provided with a charging and discharging controller and an automatic control system. A storage battery is arranged in the box body and on the lower portion of the control box. A grease pump is fixed to a bottom plate at the bottom of the grease storage box. A motor is fixed to the lower portion of the grease storage box. The coating plate assembly is fixed to one side of the steel rail through a coating plate fixing device. An output shaft of the motor is fixedly connected with the input end of the grease pump. The grease pump is connected with the coating plate assembly through an oil pipe. An electromagnetic sensor is arranged on the inner side of a linear segment of the steel rail. According to the direct-current intelligent coating equipment used for the rail, the structure is simple, operation and maintenance for working personnel are convenient, manpower and material resources are saved, and the cost is reduced; the coating plate assembly is adopted, so that the loss and flow of wheel-rail lubricating anti-attrition grease is effectively reduced, and the loss is reduced; in addition, the phenomenon that in the prior art, grease flows due to overmuch oil output or a rail bed surface and a vehicle wheel bogie are polluted due to the fact that the grease is sparse is completely eradicated.

The invention discloses a freshwater fish body fresh preservation agent made from scale zymolyte and a preparation method and a fresh preservation method thereof, belonging to the technical field of aquatic product fresh preservation. The freshwater fish body fresh preservation agent is made from scales on fish bodies; the scales releases protein enzymolysis liquid under the enzymolysis effect ofpepsase; and a plasticizer glycerol is added to the protein enzymolysis liquid to obtain the freshwater fish body fresh preservation agent. According to the invention, after the scale collagen proteolysis liquid in the fresh preservation agent permeates into a freshwater fish body, a film can be formed on the surface of the fish body to play the role in reducing bacterial contamination, resistingthe microorganism growth, weakening air oxidation, slowing fat oxidation rate and reducing the weight loss of the fish body. Compared with the common cold storage method, the freshwater fish body fresh preservation agent can well maintain the freshness, the water content and the flavor of the fish body, achieve better fresh preservation effect, reduce the weight loss of the fish body in the storage process and prolong the shelf life of the fish body.

The invention relates to a noise reduction silencing device, in particular to a combined type array impedance recombination silencer. The combined type array impedance recombination silencer comprises silencing tube bodies, a support, an access door and a flow guide cover. The support is arranged in a latticed shape and provided with an access door frame, the two ends of each silencing tube body are fixedly installed on the corresponding latticed intersection points of the support, the axes of the silencing tube bodies are arranged in parallel in the air flow direction, and the silencing tube bodies are arranged through the support and fixed to a ventilation pipeline. The access door is installed on the access door frame on the support in a matched mode, the access door is of a connecting rod structure and is hinged to the access door frame, and sliding wheels are arranged at the bottom of the access door. The flow guide cover comprises a large-area lower bottom face and a small-area upper bottom face and the large-area lower bottom face is matched with the end faces of the silencing tube bodies. According to the combined type array impedance recombination silencer, the combination type can be reasonably adjusted according to the flow field characteristic, the resistance structure is utilized, the silencing effect of a certain frequency band, especially the middle-low frequency band, is effectively improved, the production efficiency can further be improved, and transportation, storage and maintenance are convenient.

The invention discloses a preparation method for a charcoal base fertilizer. The method mainly includes: subjecting wheat straw to crushing, drying, mixing and other steps to obtain biological ash, subjecting the biological ash to sieving treatment, then stirring 15-18 parts of ammonium sulfate, 9-12 parts of urea, 6-8 parts of potassium sulfate, 1-2 parts of monoammonium phosphate, and 9-13 parts of bentonite, and finally carrying out granulation, thus obtaining fertilizer granules. By using wheat straw as raw materials, on the one hand pollution caused by straw burning can be prevented, and on the other hand straws can be utilized.

The invention provides a closed isolation composition applied to the treatment of a gangue hill and an implementation method thereof, and belongs to the technical field of environmental treatment andmine ecological restoration. The closed isolation composition comprises inorganic substances, a polymer, fiber, an additive and water, the weight ratio of the inorganic substances is 20-75%, the weight ratio of the polymer is 0.2-5%, the weight ratio of the fiber is 0.05-5%, the weight ratio of the additive is 0.05-2%, and the weight ratio of the water is 20-75%; the above materials are mixed according to a certain ratio to prepare a mixed slurry, the slurry is sprayed on the surface of the gangue hill for sealing of the gangue hill and isolation from a vegetation area to completely eliminatethe hazard of the gangue hill, and the disturbance influence of vegetation on the gangue hill is eliminated. The closed isolation layer has the advantages of airtightness, seepage resistance, heat insulation, firmness and durability, the used materials are all environmentally friendly, the construction is simple, the efficiency is high, and the cost is low.

The invention discloses a cuttage seedling raising method for twigs of ilex chinensis Sims. According to the method, nursery stocks of ilex chinensis Sims are bred by utilizing the cuttage of the twigs of fruiting ilex chinensis Sims, the genetic characteristics of excellent mother plants of ilex chinensis Sims can be kept, and rapid breeding and cultivation of ilex chinensis Sims are achieved. The method comprises the steps of selection of mother trees, management, protection and cultivation of the mother trees, collection of cuttings, treatment of the cuttings, cuttage of the cuttings, infusion feeding for scions and management after cuttage, wherein the robust and disease-free fruiting nursery stocks are used as the mother trees, a cutting orchard is established, the twigs are cut for sprouting promotion, semi-lignified branches are selected as the cuttage scions, the cuttings are subjected to rooting-promotion and non-destructive treatment, the scions are supplied with nutrients invitro after cuttage, through tests, the rooting survival rate of the cuttings is 96%, and a large number of nursery stocks of ilex chinensis Sims can be quickly bred. The unique methods and structures of pretreatment of the scions and infusion feeding for the scions are critical, the problem of difficult breeding of seeds of ilex chinensis Sims is solved, the breeding speed is high, and the method is simple.

The invention belongs to the technical field of semiconductor nano-material preparation, and discloses a nano-structure-controllable diluted magnetic semiconductor material having room-temperature ferromagnetism and a preparation method and device of the diluted magnetic semiconductor material. The material is prepared in the method comprising the steps that a zinc acetate solution and a copper acetate solution having the same volume are placed in two solution containing cups of a double-source ultrasonic atomization pyrolysis spraying instrument respectively, double-source ultrasonic atomization pyrolysis spraying is carried out, and the nano-structure-controllable diluted magnetic semiconductor material deposited on a substrate is obtained. Precursors are atomized through ultrasonic waves, and therefore smaller and more uniform mist can be obtained; double-source atomization is adopted, so that cross contamination between the solutions is avoided during mixing, meanwhile, component structures are easy to control, and preparation of a gradient film or a multilayer film structure is facilitated; the device is improved, so that purely diluted magnetic semiconductor materials with different nano-structures and various good properties are prepared, Ms can reach 3.8*10<-4>emu/cm<-2>, Hc can reach 0.1 KOe, and the materials have the characteristic of soft magnetism.