6results about How to "Large particles" patented technology

The utility model discloses a spraying system of a spraying tower, which relates to the waste gas treatment technology, and adopts the technical scheme that the spraying system comprises a tower body, a spraying pipe and a nozzle, the spraying pipe comprises a main pipe and a branch pipe, the nozzle is rotatably connected to the branch pipe, a rotating piece is arranged in the nozzle, and the nozzle is provided with an atomizing opening and a liquid flow opening. The spray head starts to rotate under the action of the rotating part, the treatment liquid in the spray head is sprayed out from the atomization opening and the liquid flow opening under the action of liquid pressure, the treatment liquid sprayed out from the liquid flow opening is large in particle diameter and can effectively combine pollutants with large diameters in waste gas, the treatment liquid sprayed out from the atomization opening is small in particle diameter, and the pollutants can be effectively combined with the pollutants with large diameters in the waste gas. The spray tower is simple in structure, large in dispersion area and longer in hang time, and can be fully combined with pollutants with smaller diameters in waste gas, and meanwhile, as the rotation of the spray head can provide centrifugal force for the treatment liquid leaving the spray head, the treatment liquid sprayed out of the atomization port and the liquid flow port can have wider coverage area, and the working efficiency of the spray tower is improved.

The invention relates to the field of recycling of positive electrode materials of waste lithium ion batteries, in particular to a method for removing aluminum from lithium extraction residues through cooperation of inorganic acid and alkali. The method comprises the following steps: 1) roasting the lithium iron phosphate lithium extraction residues to obtain iron phosphorus residues; 2) mixing the iron-phosphorus slag with an alkaline solution and reacting to obtain an alkaline leaching solution and alkaline leaching slag; (3) adjusting the pH value of the alkaline leaching solution and removing aluminum to obtain aluminum-removed liquid 1; 4) mixing the alkaline leaching residues with inorganic acid and reacting to obtain an acid leaching solution; 5) mixing the pickle liquor with an aluminum removal agent and reacting to obtain aluminum removal liquid 2; and 6) mixing the aluminum-removed liquid 1 with the aluminum-removed liquid 2 to obtain a purified iron-phosphorus liquid. The lithium extraction residue inorganic acid-alkali synergistic aluminum removal process provided by the invention realizes deep removal of aluminum impurities, has high iron and phosphorus recovery rates, does not introduce fluorine elements in the whole process flow, and provides a high-quality raw material for regeneration of battery-grade iron phosphate.

The application discloses a granulation method of high-density spherical pesticide granules suitable for high-altitude spraying, characterized in that a pesticide raw material is uniformly mixed with a wetting agent, a dispersing agent, a disintegrating agent and a filler, the mixture is crushed by an air flow crusher to obtain a mother powder, the mother powder is sent into a high-speed granulator by a vacuum feeder, water is sprayed into the high-speed granulator at the same time, sugar-coated granulation is carried out, a boiling dryer is added to carry out drying, and the high-density spherical pesticide granules of the application are obtained. The granulation method of the high-density spherical pesticide granules is simple in process, low in equipment investment, and the obtained granules are round and uniform, and the method is convenient for popularization and promotion.

The application discloses a flue gas water-saving and multi-pollutant removal device and a working method thereof, and belongs to the technical field of flue gas water-saving. The device comprises a flue gas inlet pipe, a cylinder and a dehydrated flue gas passage which are sequentially connected. The outer wall of the cylinder is provided with a reinforced radiation cooling coating. A plurality of rows of high-voltage electrode columns and ground electrode columns are alternately arranged in the front section of the flue gas inlet pipe. The dehydrated flue gas passage is externally nested with a condensed water collecting device, and the condensed water collecting device is connected with the cylinder. A plurality of condensed water collecting openings are arranged in the outlet transition section, and the condensed water collecting openings are communicated with the condensed water collecting device. A vibrating string grid is arranged in the dehydrated flue gas passage, and a plurality of drainage holes are arranged on the dehydrated flue gas passage below the vibrating string grid. The device has the advantages of compact structure, small volume and low energy consumption, and can realize low-temperature and high-efficiency recovery of water in flue gas and simultaneous removal of multi-pollutants.

A method for preparing a binary formula for Dai pottery clay and its application is disclosed. The method involves taking Dai pottery clay from the Honghe River basin, five-colored clay from Honghe County, and charcoal powder. The Dai pottery clay and five-colored clay are sun-dried and weathered for at least three months. The Dai pottery clay from the Honghe River basin has a SiO2 content of not less than 50%, an Al2O3 content of not less than 15%, an Fe2O3 content of not less than 10%, and a loss on ignition of less than 10%. The five-colored clay from Honghe County has a SiO2 content of 72-82%, an Al2O3 content of 9-12%, and an Fe2O3 content of 3-5%. The method involves soaking the Dai pottery clay and five-colored clay in water until fully saturated, then ball-milling them. The slurry is sieved, and then charcoal powder is added. After stirring evenly, the clay is pressed to drain water and then kneaded to remove air. This invention can improve the throwing and molding performance of Dai pottery clay, increase the sintering temperature and the density and strength of its structure, and reduce the burn-off rate.

The application provides a preparation method of low-cost high-purity crystalline cristobalite quartz sand, comprising the following steps: mixing a silicon source, high-purity alkali and deionized water in a proportion, and heating to prepare high-purity water glass; mixing the high-purity water glass with high-purity acid in a proportion, stirring to form a precipitate, sealing, standing and using the growth process of the gel to perform segregation and impurity removal, and then performing aging treatment; using deionized water to filter and rinse the precipitate, and drying to obtain amorphous high-purity silica gel powder; performing crystallization transformation and chlorination impurity removal on the amorphous high-purity silica gel powder; using deionized water and dilute acid to clean the cristobalite after crystallization and impurity removal, and drying to obtain high-purity crystalline cristobalite quartz sand. The purity of the quartz sand prepared by the preparation method can reach 5N-7N grade, the preparation cost is low, large-scale continuous production can be realized, the synthesized quartz sand is in a crystalline state, and the produced quartz glass product has lower bubble and flocculent content and better mechanical, heat-resistant and optical properties.