14results about How to "Reduce subsequent processing costs" patented technology

The application relates to the field of advanced structural ceramics, and particularly discloses a gel injection molding method for preparing high-performance silicon nitride ceramics and a preparation method thereof. Raw materials include beta-SiN submicron powder 75 parts, YO submicron powder 8 parts, TiC submicron powder 5 parts, AlO superfine powder 5 parts, ZrO submicron powder 2 parts and wollastonite 5 parts in terms of mass ratio, a complex whisker regulator and an entry liquid are used, and ceramics are prepared through gel injection molding, dehydration, degreasing and gas pressure sintering. The grain morphology and interface combination are optimized through the whisker regulator, the slurry dispersion and the green body uniformity are improved through the entry liquid, and the product has a density greater than or equal to 99%, a Vickers hardness greater than or equal to 1700HV and a bending strength greater than or equal to 930MPa through 1700-1850 DEG C. gas pressure sintering, and the product has high density, high hardness, high toughness, wear resistance, corrosion resistance and long service life.

This invention discloses a mica nanosheet and its preparation method, belonging to the field of two-dimensional nanofiller technology. The preparation method disclosed in this invention involves heat-treating bulk mica, followed by purification in an aqueous nitric acid solution to obtain pretreated mica powder; dispersing the pretreated mica powder in a solvent to obtain a mixed slurry; adding an oxidant to the mixed slurry and stirring the mixture, then adding a small-molecule lithium salt to further react, obtaining a pretreated slurry; adding grinding beads to the pretreated slurry for sand milling to achieve exfoliation; subsequently releasing the exfoliated slurry and performing post-processing to obtain mica nanosheets. This method solves the technical problem of simultaneously achieving efficient, green, and controllable exfoliation, and possesses scalability potential, which is difficult to achieve with existing methods.

This invention discloses an environmentally friendly construction waste resource recovery device, comprising: a mounting frame, a crushing component at the top of the mounting frame, a dust suppression component on the crushing component, and a discharge box and a water storage tank inside the mounting frame for solid-liquid separation of crushed materials and wastewater, the discharge box and the water storage tank being fixedly connected; in this invention, the pump, inlet pipe, outlet pipe, circulation pipe, spray cylinder, and spray holes of the dust suppression component work together to quickly and evenly spray water mist during the crushing of construction waste, efficiently adsorbing dust, effectively suppressing dust diffusion, avoiding dust pollution of the surrounding environment and harm to the health of operators. Simultaneously, the water used for dust suppression can be purified and recycled through the water storage tank, eliminating the need for additional large amounts of clean water, saving water resources. Furthermore, the spray cylinder is flush with the inner side of the crushing hopper, not affecting material crushing and falling, adapting to the actual needs of crushing operations, and improving the environmental friendliness and practicality of the device.

The utility model relates to the technical field of shearing devices, and discloses a pearlescent embossed paper rapid shearing device which comprises an operation table, one side of the top of the operation table is fixedly connected with an installation frame, the top of the operation table is fixedly connected with a fixing frame, the top of the operation table is fixedly connected with a U-shaped frame, and the top of the U-shaped frame is fixedly connected with an air cylinder. The output end of the air cylinder is fixedly connected with a lifting rod, the bottom of the lifting rod is fixedly connected with a cutter, arc-shaped pressing plates are arranged on the two sides of the cutter, a pressing assembly is arranged on the U-shaped frame, and the pressing assembly conducts pressing when paper is cut through the arc-shaped pressing plates. In the cutting process, the edge of the paper is effectively pressed through close fit of the arc-shaped pressing plate and the arc-shaped groove, displacement of the paper during cutting is avoided, the precision of the cutting size is remarkably improved, and the product quality is ensured.

The invention discloses a sulfur-fluorine mixed acid evaporation, concentration and separation system, which comprises a mixed acid separation and concentration device used for heating, concentrating and separating sulfur-fluorine mixed acid, cooling obtained hydrofluoric acid steam to prepare hydrofluoric acid, and conveying obtained low-fluorine sulfuric acid to a sulfuric acid fluorine removal device through a pipeline; the sulfuric acid defluorination device is used for heating and separating low-fluorine sulfuric acid and removing fluorine-containing substances in the low-fluorine sulfuric acid, obtained sulfuric acid is conveyed to the sulfuric acid concentration device through a pipeline, and obtained hydrofluoric acid steam is cooled to prepare hydrofluoric acid; and the sulfuric acid concentration device is used for heating and concentrating sulfuric acid, and the obtained concentrated sulfuric acid is reused in the mixed acid separation and concentration device to obtain production water containing trace sulfuric acid. The invention also discloses a sulfur-fluorine mixed acid evaporation, concentration and separation method. According to the method, high-concentration concentrated sulfuric acid can be obtained from the low-concentration sulfur-fluorine mixed acid in the evaporation and concentration process, and comprehensive utilization of F and S resources is achieved.

This utility model discloses a stop bar structure for a die-casting mold, comprising: a die-casting mold body and a positioning component. Two handles are installed on one side of the die-casting mold body, and two fixing bolts are installed on the other side of the die-casting mold body. A stop bar assembly is provided in the middle of the die-casting mold body. The positioning component is located on top of the stop bar assembly to fix the position of the stop bar assembly. This utility model forms a reliable physical barrier by having the stop bar body fit against the mold closing gap of the die-casting mold, significantly reducing the risk of high-temperature molten metal overflowing from the parting surface under high pressure, reducing the generation of defects such as flash and burrs, improving the surface quality and dimensional accuracy of the casting, and reducing subsequent processing costs. It is more suitable for the production of precision die-casting parts with strict requirements for surface finish. Furthermore, the engaging design of the fastening bolts and positioning holes, combined with the anti-slip structure of the threaded ring, ensures that the stop bar assembly maintains a stable connection under high pressure conditions.

This utility model relates to the field of dust collector bag technology, specifically a dust collector bag that is easy to connect and fix. It includes a bag body fitted onto a bag frame. The bag body is characterized by a steel wire ring at its top, and multiple sets of rubber strips fixed to the inner wall of the bag body, with grooves on the surface of the rubber strips. The beneficial effect is that by integrally forming a cloth cover around the top of the bag body, and setting steel wire rings on the top and bottom surfaces of the inner wall of the cloth cover, during installation, after fitting the bag body onto the bag frame, pulling downwards causes the cloth cover to fit over the top of the frame. Using pliers, the steel wire rings are twisted through the cloth cover, tightly securing them to the top ring of the bag frame. Simultaneously, the rubber sleeve on the inner ring of the cloth cover increases the friction between it and the top ring of the frame, further strengthening the connection and effectively preventing the bag body from falling off during use, ensuring stable dust collection.

The application discloses an irregular casting dust fall recovery polishing table, which comprises a polishing table body, a group of transmission grooves arranged in the polishing table body, a flow guide mechanism arranged in the transmission grooves, a separation sieve plate arranged at the top of the transmission grooves, a plurality of separation grooves formed in the separation sieve plate, a liquid inlet groove formed in the polishing table body and movably provided with a suspension shaft, and the suspension shaft is in abutment with the edges of the separation sieve plate on both sides; the flow guide mechanism comprises a fixed baffle and a conveying groove, and the fixed baffle is clamped in the transmission grooves; compared with the prior art, the elastic clamping net plate and the floating suspension shaft are linked in the application, when the liquid level rises, the suspension shaft is triggered to push the reset inserting rod, the transmission separation shaft is driven to stir the metal scraps, and the sieve hole is prevented from being blocked; the elastic framework and the reset pad plate of the separation sieve plate are deformed to drive the screening shaft to move, the shunting path is further dredged, the self-cleaning during the operation of the equipment is realized, and manual intervention is reduced.

This invention discloses a waste coffee grounds-based adhesive-free engineered wood panel and its preparation method in the field of waste recycling technology. It aims to solve the problems of existing engineered wood panels where chemical adhesives continuously release volatile organic compounds such as formaldehyde and benzene during hot pressing, and the significant limitations of coffee grounds resource utilization technology. The preparation of the waste coffee grounds-based adhesive-free engineered wood panel includes the following steps: mixing dried waste coffee grounds with polylactic acid to obtain a blend; melting and granulating the blend to obtain uniformly mixed particles; spreading the uniformly mixed particles onto the surface of an engineered wood panel substrate; hot pressing under preset conditions; and cooling to room temperature to obtain the waste coffee grounds-based adhesive-free engineered wood panel. The preparation process of this invention is green and efficient, providing the engineered wood panel industry with a low-cost, formaldehyde-free functional finishing solution.

The invention relates to the technical field of sewage treatment, and discloses a jet device for sewage treatment, the jet device comprises a jet device body, a water inlet pipe, a water outlet and an air inlet pipe, a suction chamber is arranged at the left end in the jet device body, and the right end of the suction chamber is connected with a throat pipe; the water outlet is connected to the right end of the throat pipe in a flaring mode, a water outlet flange plate is fixedly arranged at the outer end of the water outlet, and the air inlet pipe is fixedly arranged at the upper end of the side of the jet device body. The water inlet pipe is installed at the left end of the jet device body, a necking-down nozzle is arranged at the right end of the water inlet pipe and stretches into the position, opposite to the throat pipe, inside the suction chamber, and a liquid inlet flange plate is fixedly arranged at the outer end of the water inlet pipe. According to the jet device, sewage and gas are efficiently mixed in the jet device, the mixed sewage can be sprayed out at high pressure through the throat pipe and the flared water outlet, and higher treatment efficiency and effluent quality are shown in the sewage treatment process.

The invention discloses a method and system for recovering high-purity calcium fluoride from rare earth ore fluorine-containing raffinate, the rare earth ore fluorine-containing raffinate enters a nanofiltration separation unit after suspended solids and organic impurities are removed in a pretreatment unit, sulfate ions are intercepted by a nanofiltration membrane to form a sulfate concentrated solution, and monovalent fluorine ions enter nanofiltration produced water through the nanofiltration membrane; carrying out induced crystallization reaction on the nanofiltration produced water and lime milk in a calcium fluoride crystallization reactor to generate calcium fluoride crystals; small-particle calcium fluoride crystals obtained by solid-liquid separation from the effluent of the calcium fluoride crystallization reactor are sent back to the calcium fluoride crystallization reactor to serve as calcium fluoride seed crystals, and the water obtained by solid-liquid separation is discharged after reaching the standard; according to the method, the purity of the calcium fluoride generated by the method is stabilized at 90% or above, sulfate by-products can be produced, resource recycling of fluorine and sulfate in the rare earth raffinate is achieved, and the disposal amount of hazardous waste is greatly reduced.

This utility model relates to the field of waste disposal and discloses a waterborne floating waste grading and cleaning device, including a collection bin. A connecting rod is fixedly connected to the top outer wall of the collection bin, and a top frame is fixedly connected to the top of the connecting rod. A grading and cleaning mechanism is provided inside the collection bin. The grading and cleaning mechanism includes a first filter frame, the outer wall of which is fixedly connected to the inner wall of the collection bin. A second filter frame is fixedly connected to the inner wall of the collection bin. A connecting plate is fixedly connected to the outer wall of the inner ring of the top frame, and a movable plate is provided above the connecting plate. In this utility model, precise grading and collection are achieved through screens with different aperture sizes, quickly separating large floating objects from small fragments, reducing subsequent processing costs. The collection port is adjustable, allowing the collection efficiency to be adjusted according to the waste density, reducing energy consumption, saving operating costs, and avoiding safety hazards and environmental damage caused by external power sources.

This utility model discloses a locking nut production and processing device, including a base and a housing. The housing is welded to the upper end of the base, and a rotating disk is movably connected to the middle of the housing. A second motor is installed inside the base, and a drive shaft is fixed to the output end of the second motor. A sector gear is fixed to the outer surface of the drive shaft. A bearing seat is installed in the middle of the base, and a transmission shaft is fixed to the inner ring of the bearing seat. A driven gear is fixed to the outer surface of the transmission shaft. This locking nut production and processing device drives the rotating disk to rotate stepwise through the intermittent meshing of the sector gear and the driven gear, realizing automatic switching between multiple workstations and significantly improving processing efficiency. At the same time, the non-continuous meshing characteristic of the sector gear ensures that the rotating disk is accurately positioned at the processing position, avoiding processing errors caused by vibration or offset, ensuring the accuracy and consistency of the nut thread, and meeting the quality stability requirements of mass production.

The invention discloses a method for efficiently separating lead and arsenic from copper smelting dust pickle liquor, and relates to the field of metallurgical wet separation, the method realizes lead and arsenic separation through a SO2 reduction-ammonium acetate selective dissolution two-step process, and specifically comprises the four steps of pickle liquor pretreatment, SO2 reduction lead deposition, ammonium acetate arsenic dissolution and lead and arsenic product purification; the reduction potential is regulated to be 300-400 mV, the temperature is 30-50 DEG C, lead is precipitated in the form of PbSO4, and the precipitation rate is larger than or equal to 98%; 200-400g / L ammonium acetate solution is adopted to selectively dissolve arsenic, the arsenic dissolution rate is greater than or equal to 97%, and the lead loss rate is less than or equal to 1%; the method has the advantages of high separation efficiency, recyclable medicament and no secondary pollution, and is suitable for industrial separation of lead and arsenic in the copper smelting smoke acid leaching solution.