8results about How to "Solve recycling difficulties" patented technology

The present application belongs to the technical field of disposable plugging stopper, and specifically provides a combined pin plugging stopper and a slurry sealing and blocking method. The combined pin plugging stopper comprises a stopper pipe, a first pin, a sliding structure, a deformation piece, an inner support, a steel ball, a second pin, a connector, a slurry overflow port and a slurry outlet pipe. The stopper pipe is fixedly connected with a grouting pipe through the first pin. The other end of the stopper pipe is arranged along the central axis of the grouting pipe and is connected with the slurry outlet pipe. The steel ball is arranged inside the side of the stopper pipe close to the slurry outlet pipe. The second pin is arranged between the steel ball and the slurry outlet pipe. The sliding structure is sleeved on the stopper pipe and is provided with a plurality of deformation pieces. The end of the sliding structure close to the slurry outlet pipe is connected with the slurry overflow port arranged on the slurry outlet pipe through the connector. The inner support is arranged on the stopper pipe and between the adjacent two deformation pieces. The present application can solve the problem of sealing failure or difficult recovery in the high-pressure grouting process caused by the structural and technological defects of the existing plugging stopper.

This invention relates to a method for the resource utilization of ammonia-containing waste generated during beryllium smelting, belonging to the technical field of wastewater and waste residue treatment and resource utilization. The method includes: mixing aluminum ammonium vanadium slag with beryllium washing wastewater; mixing the resulting aluminum ammonium vanadium beryllium solution with a calcium-containing transforming agent to obtain aluminum-calcium slag and aluminum ammonium vanadium purified solution; mixing solution A with beryllium precipitation wastewater and adding a calcium-containing alkaline substance to obtain a conditioning solution and gypsum slag; adding a decalcifying agent to the conditioning solution for precipitation and decalcification to obtain decalcified slag and decalcified solution; stripping the decalcified solution to obtain ammonia water and ammonia stripping mother liquor; solution A is an aluminum ammonium vanadium beryllium solution and / or aluminum ammonium vanadium purified solution; or, mixing the aluminum ammonium vanadium purified solution with beryllium precipitation wastewater and evaporating and crystallizing to obtain ammonium salts. This method fully utilizes the ammonia resources in the ammonia-containing waste generated during beryllium smelting, preparing ammonium salts or ammonia water, achieving full recycling of ammonia nitrogen in the production process.

The utility model relates to the field of environmental remediation, specifically disclose a kind of mine ecological remediation monitoring equipment, including pasting bottom block, the fixed bottom structure is connected to pasting bottom block lower surface, pasting bottom block upper surface is fixedly connected with guide slide rail, guide slide rail inner surface is slidably connected with weight block, weight block outer surface is fixedly connected with support piece column, support piece column inner surface is slidably connected with storage part shell, storage part shell inner surface is fixedly connected with bearing plate, bearing plate outer surface is connected with lock structure, the upper surface of lock structure is connected with outer control plate, the outer surface of outer control plate is fixedly connected with electric telescopic rod, outer control plate is pulled in storage part shell by electric telescopic rod drive outer control plate pull in inclined lock block, so that storage part shell no longer be stuck in support piece column, after counterweight air bag drive floating plate float, so that water quality monitor floats to water surface, reached the purpose of the detector of deep water area is recycled, solved the detector of deep water area position recovery difficult problem.

The application discloses application of phosphonated starch in selective flocculation desliming of fine-grained niobium ore, and a structural formula of the phosphonated starch is composed of a phosphonate group and a polysaccharide group of starch, the polysaccharide group is a high molecular chain formed by connecting multiple six-carbon sugar units through a glycosidic bond, and the phosphonate group is used for chelating with Nb 5+ A chelation reaction occurs, the polysaccharide group high molecular chain produces flocculation, and fine-grained gangue minerals are removed by selective flocculation. The phosphonate group of the phosphonated starch in the application chelates with exposed niobium ions on the surface of niobium minerals, so that the phosphonated starch is selectively adsorbed on the surface of the niobium minerals, the polysaccharide high molecular chain plays a bridging and sweeping role, fine-grained gangue slimes can be significantly removed by the method of selective flocculation desliming, the grade of Nb2O5 is improved, and the method has important significance for efficient recycling of fine-grained niobium ore.

This invention discloses a copper-based metal-organic framework composite photoelectrochemical Fenton catalytic membrane, its preparation method, and its application, belonging to the field of photoelectrochemical Fenton composite catalytic membrane and water treatment technology. The catalytic membrane consists of an acidified carbon nanotube (ACCNTs) substrate and a copper-based MOF (CuBTC)@graphite-phase carbon nitride (CN) composite catalytic layer supported on its surface. First, carbon nanotubes (CNTs) are acidified with mixed acid to obtain ACCNTs, and an ACCNTs substrate membrane is prepared by vacuum filtration. Subsequently, a CuBTC@CN catalytic layer is further loaded onto the surface of the ACCNTs substrate membrane using vacuum filtration. The ACCNTs substrate enhances the electron transport rate and promotes hydrogen peroxide generation; the heterojunction formed by CuBTC and CN significantly inhibits photogenerated carrier recombination and broadens the visible light response range. The resulting copper-based metal-organic framework composite photoelectrochemical Fenton catalytic membrane can achieve simultaneous filtration and catalytic degradation in continuous flow mode, exhibiting good removal efficiency for organic wastewater.

The present application belongs to the technical field of mineral processing and environmental protection, and particularly relates to a method for removing impurity metal ions and compounds in raffinate acid. The impurity metal ions and compounds such as iron, magnesium and aluminum in the raffinate acid are selectively removed under the synergistic action of adsorption materials and flotation reagents. The method mainly uses the strong adsorption of the adsorption materials and the strong selectivity of the specific flotation reagents, and uses the adsorption materials and the flotation reagents in combination, and through adjusting and controlling the types, the ratio, the dosage of the adsorption materials and the flotation reagents, and the reaction sequence, the time and the temperature, the selective removal of the impurity metal ions and compounds in the raffinate acid is realized, and the comprehensive utilization rate of the raffinate acid is improved. The method is suitable for the purification system of the raffinate acid in the phosphorus chemical industry, and has the advantages of simple method, strong selectivity, remarkable effect and short action time, and has important significance for solving the problems of difficult disposal and reuse of the raffinate acid, high production cost of the phosphorus chemical industry and serious waste of phosphorus resources.

The application relates to the technical field of plastic packaging film, and particularly discloses a recyclable PE wrapping film and a preparation method thereof. The recyclable PE wrapping film comprises the following raw materials: PE recyclable material, ethylene-propylene-diene rubber, active phenolic resin, metal halide, metallocene POE, HDPE resin, tackifying masterbatch, and the balance of LLDPE resin; the preparation method is as follows: the LLDPE resin is mixed with the PE recyclable material and the ethylene-propylene-diene rubber, hot melting, the active phenolic resin and the metal halide are added from the side feeding, hot melting, and a melt is prepared; the melt is cast and cooled to prepare a cast sheet, the cast sheet is drawn and stretched, and then subjected to corona treatment, curling and slitting. The recyclable PE wrapping film does not add opening agents, slip agents and anti-fog agents, ensures that the product is easy to recycle, the recyclable material has high purity, a high content of PE recyclable material is added, and the recyclable PE wrapping film still has relatively high tensile strength, puncture resistance and transparency.

This invention belongs to the field of environmental materials, specifically relating to a method for preparing and applying a composite pollutant treatment agent, comprising the following steps: Step 1, dissolving polyacrylonitrile in N,N-dimethylformamide, stirring thoroughly to obtain a spinning solution, and performing electrospinning to obtain an electrospun polyacrylonitrile film; Step 2, pre-oxidizing the electrospun polyacrylonitrile film in an air atmosphere to obtain a pre-oxidized polyacrylonitrile film; Step 3, carbonizing the pre-oxidized polyacrylonitrile film under nitrogen protection to obtain electrospun carbon fibers; Step 4, dissolving bismuth nitrate in ethylene glycol, and obtaining a bismuth nitrate / ethylene glycol solution by magnetic stirring; Step 5, purifying anhydrous ethanol by dehydration using a 3A molecular sieve; Step 6, mixing the bismuth nitrate / ethylene glycol solution obtained in Step 4 with the anhydrous ethanol obtained in Step 5, adding the electrospun carbon fibers obtained in Step 3, performing a hydrothermal reaction, and washing and drying the reaction product to obtain Bi2O supported on carbon fibers with both adsorption and degradation effects. 2.33 / Bi2O3 composite pollutant treatment agent. This composite pollutant treatment agent is used for the catalytic degradation and adsorption of organic pollutants in wastewater.