13results about How to "Solving Disposal Problems" patented technology

The invention relates to a method for preparing a high-performance plate by using an ex-service wind power blade, the high-performance plate and application of the high-performance plate, and the method comprises the following steps: separating the ex-service wind power blade into fiber strips, reinforcing ribs, glass fiber reinforced plastic crushed materials, blade powder and balsa wood-PVC powder, and respectively treating the materials to prepare each component of the multi-effect high-performance plate; and finally, all the components are subjected to compression molding treatment to be manufactured into the multifunctional high-performance plate, all the components of the retired wind power blade can be recycled, and then the disposal problem of the retired wind power blade can be solved. And moreover, the glass fiber filaments obtained by degrading the retired wind turbine blade and the thermosetting resin form the reinforced panel, so that the strength of the multifunctional high-performance plate can be improved while the stability of the overall structure of the reinforced panel is ensured. In addition, compression molding treatment is performed by fully utilizing the characteristics of different parts, so that the illumination resistance of the board can be improved, the board is not easy to deform due to water absorption, and the applicability of the board can be further improved.

The invention discloses an outdoor magnesium oxysulfate fireproof plate and a preparation method thereof, and belongs to the technical field of light building materials, and the preparation method comprises the steps of filler pretreatment, cement paste preparation, filling reinforcement, molding pouring and segmented maintenance. According to the invention, the recycled foamed ceramic leftover material is used as a core filler, so that the problem of treatment of foamed ceramic processing waste is effectively solved, and the environmental pressure caused by industrial solid waste accumulation is reduced. Meanwhile, part of traditional filler is replaced with waste, the raw material cost for preparing the fireproof plate is greatly reduced, the dual benefits of environmental protection, waste reduction and cost optimization are achieved, and the development trend of green building materials is met.

The invention provides a Fischer-Tropsch wax residue treatment method and coal water slurry. The treatment method comprises the following steps: S1, mixing Fischer-Tropsch residue wax, a coal water slurry additive, a suspending agent and water, and carrying out first grinding to obtain a first suspension; s2, carrying out solid-liquid separation on the first suspension liquid by adopting a magnetic separation method to obtain a second suspension liquid and solid powder; and S3, mixing the second suspension with coal, and carrying out second grinding to obtain the coal water slurry. By applying the technical scheme provided by the invention, the treatment problem of the Fischer-Tropsch wax residue can be solved on a large scale, and the technical problems of high slurry viscosity and low slurry concentration after the wax residue and coal are mixed are solved by carrying out wet grinding on the coal water slurry additive, the suspending agent and the wax residue and then carrying out magnetic separation; and after the suspending agent and the magnetic separator are introduced, the separation efficiency of the wax and the iron-based catalyst in the wax residue can be greatly improved, the wax in the wax residue can be effectively utilized to produce raw gas, and the separated and enriched Fischer-Tropsch iron-based catalyst can also be used as a steel-making raw material in a steel plant.

The application discloses a treatment system and method for tap water with excessive nitrate. The treatment system comprises a nitrate separation device (1), a frequently reversed electrode electrodialysis device (2), a nanofiltration salt separation device (3) and a water production tank (5). The treatment method comprises the following steps: performing nitrate separation treatment on raw water to obtain concentrated water and pre-production water; passing the concentrated water into the frequently reversed electrode electrodialysis device (2) to obtain low-salt wastewater and high-salt solution; passing the high-salt solution into the nanofiltration salt separation device (3) to obtain permeate and separation liquid; and mixing the separation liquid with the pre-production water as production water. The application is mainly used for treating tap water with excessive nitrate in a tap water plant, and subsequent treatment of concentrated water after removal of nitrate, adopts a salt separation reflux mode, refluxes divalent ions beneficial to human health and pipe network stability in the concentrated water into tap water production water, and makes the TDS content of the nanofiltration concentrated water meet environmental protection requirements after treatment.

The invention discloses a pre-buried underground alkali slag injection well filling salt cavern slurry mixing device, wherein the slurry mixing pool is a vertical cylinder with half of the upper opening closed and half of the upper opening open, and an agitator is installed in the slurry mixing pool; a calcium liquid pipeline is connected to the calcium liquid storage tank, and one end of the calcium liquid pipeline extends to the upper opening of the cylinder; a salt cavern is an underground space formed by mining rock salt resources by a connecting well water solution method, two salt caverns are connected underground, and a slag injection well and a brine drainage well are respectively opened above the two salt caverns; the slurry mixing pool is connected to the slag injection well through a slurry filling pipeline, and the brine drainage well is connected to the brine storage tank through a brine drainage pipeline; a circular hole a is provided at the center of the bottom end cap of the slurry mixing pool, one end of the suction pipeline extends to the upper opening of the cylinder, and a filter screen a is provided at the upper outlet of the suction pipeline. The invention can greatly improve the efficiency of alkali slag injection well filling, improve the strength of the salt cavern goaf, reduce the intensity of on-site labor operations, and reduce the formation of scale on the inner wall of the pipeline, and has good social and economic benefits.

The invention provides a gabion check dam, system and method for governing a small erosion gully in sand land, and relates to the technical field of erosion gully governing, the gabion check dam comprises a dam body, the dam body comprises gabions piled up, and each gabion comprises a metal mesh cage body and construction waste filled in the metal mesh cage body; the transverse joints of the upper and lower adjacent gabions are fixedly connected through transverse steel bars, the longitudinal joints of the left and right adjacent gabions are fixedly connected through longitudinal steel bars, and the bottom ends of the longitudinal steel bars are inserted into the ditch bottom of the erosion ditch; the transverse reinforcing steel bars are fixedly connected with the longitudinal reinforcing steel bars; by arranging the transverse reinforcing steel bars and the longitudinal reinforcing steel bars, the situation that the gabion shifts under the action of large scouring force, and consequently the dam body inclines is avoided; and the gabion adopts the construction waste as a filler, so that the dependence on natural resources is reduced, and the problem of absorption and disposal of the construction waste is solved.

The present invention provides a method for preparing low-sulfur and low-calcium clinker using phosphogypsum, and belongs to the technical field of inorganic materials. The method for preparing low-sulfur and low-calcium clinker using phosphogypsum provided by the present invention comprises the following steps: (1) mixing phosphogypsum, siliceous raw materials, iron-aluminum corrective materials and carbonaceous raw materials to obtain a mixed raw material; (2) preheating, pre-decomposing and oxidizing the mixed raw material obtained in step (1) in sequence to obtain low-sulfur and low-calcium clinker. The results of the embodiment show that the low-sulfur and low-calcium clinker provided by the present invention has a compressive strength of ≥51MPa and a flexural strength of ≥10MPa after carbonization curing for 2h, and a compressive strength of ≥79MPa and a flexural strength of ≥15MPa after carbonization curing for 24h.

This invention discloses a method for preparing battery-grade lithium phosphate from lithium dihydrogen phosphate agglomerates, comprising the following steps: preparing a first lithium dihydrogen phosphate solution and a second lithium dihydrogen phosphate solution; adjusting the pH of the first lithium dihydrogen phosphate solution to 7-10 using lithium carbonate, followed by a lithium precipitation reaction and a first solid-liquid separation to obtain wet lithium phosphate; washing the wet lithium phosphate with the second lithium dihydrogen phosphate solution, followed by a second solid-liquid separation and drying to obtain battery-grade lithium phosphate. This invention recycles and utilizes lithium dihydrogen phosphate agglomerates that are difficult to process directly in industry. Through precise reaction control and efficient washing and purification processes, it transforms them into high-value-added battery-grade lithium phosphate products. This not only solves the problem of agglomerate disposal but also produces lithium phosphate products with high purity and low impurity content, meeting the requirements for battery-grade materials, and has significant economic and environmental benefits.

This invention discloses a high-purity ultrafine spherical silica powder, its production method, and its application, belonging to the technical field of high-value mineral material preparation and high-value utilization of industrial solid waste. The preparation method includes: flotation and acid washing of silica mud to obtain purified silica powder; air jet milling and air jet classification of the purified silica powder to obtain ultrafine silica powder; and feeding the ultrafine silica powder into a plasma reactor in the presence of an oxygen-containing flow, causing simultaneous oxidation and spheroidization to obtain high-purity ultrafine spherical silica powder. The oxygen volume concentration in the oxygen-containing flow is 25-60%; the ratio of the input power of the plasma reactor to the powder feeding rate of the ultrafine silica powder is 15 kWh / kg-50 kWh / kg. Based on the material characteristics of silica mud, this method achieves high-value utilization of silica mud through the synergistic regulation of pretreatment purification, precise particle size control, and energy-coupled spheroidization throughout the entire process, while possessing advantages such as low energy consumption, uniform product particle size, high purity, and good sphericity.

The invention relates to the technical field of wastewater sludge reutilization, in particular to a photovoltaic wastewater fluorine-containing sludge resource utilization method, which comprises the following steps: S1, adding calcium hydroxide into the sludge of photovoltaic wastewater to obtain pretreated sludge; s2, pulping the pretreated sludge, mixing with a trapping agent, a foaming agent and a conditioning agent, and carrying out flotation treatment; s3, mixing the calcium fluoride sludge obtained by flotation with a strong acid solution, and neutralizing with alkali liquor to obtain the calcium fluoride sludge; and S4, grinding the concrete slag, fully mixing the ground concrete slag with calcium fluoride sludge, a high-molecular polymer, cement, a water reducing agent, nano titanium dioxide, the hollow nano cage fiber material and water, and processing to obtain the building material brick. According to the invention, after the sludge of the photovoltaic wastewater is treated, the treated sludge and various materials are subjected to blending extrusion forming, the environment-friendly building material brick can be obtained, and calcium fluoride in the building material brick is not easy to lose, so that secondary pollution to the environment is avoided, and the problem of treatment of the sludge of the photovoltaic wastewater can be well solved.

The invention discloses a composite adhesive for sintered return mine cold-bonded pellets and application of the composite adhesive. The composite adhesive is prepared from liquid sodium silicate, pre-gelatinized cassava starch and defective glass fibers which are sintered, returned and ground on the basis of the total mass of a ball pressing mixture, the application method comprises the following steps: grading and blending sintered return mine according to the grading index, shearing and grinding the sintered return mine and defective glass fiber in a cylindrical rotary drum by utilizing the characteristics of high hardness and sharp edge of the sintered return mine, then mixing the rest of adhesive and water to prepare a ball pressing mixture, and drying and solidifying for 4 hours by utilizing sintering / ring cooling flue gas after performing compression molding by using a pair of rollers at 30MPa. Through the synergistic effect of sodium silicate, cassava starch and glass fiber, the green pellet drop strength is larger than or equal to 5 times / P, the dry pellet compressive strength is larger than or equal to 2200 N / P, and the alkali metal content is smaller than 0.4%; meanwhile, resource utilization of sintering return mine, defective glass fiber and industrial waste gas is achieved, the method is compatible with existing steel equipment, the cost is controllable, the method is suitable for large-scale industrial production, and green and low-carbon transformation of the steel industry is promoted.

The present invention relates to the technical field of concrete preparation, and discloses a method for preparing permeable recycled concrete for urban streets, comprising a first permeable concrete layer, a second permeable concrete layer fixedly connected to the top surface of the first permeable concrete layer, and a third permeable concrete layer fixedly connected to the top surface of the second permeable concrete layer, wherein the constituent materials of the first permeable concrete layer are divided by weight, and the first permeable concrete layer includes 260-420 parts of cement, 150-170 parts of fly ash, 1000-1200 parts of coarse aggregate, 7-11 parts of reinforcing agent, 6-10 parts of stabilizer, and 80-120 parts of water. The method for preparing permeable recycled concrete for urban streets and the construction method thereof, the composite permeable concrete layer composed of the first permeable concrete layer, the second permeable concrete layer, the third permeable concrete layer, and the reinforcing structure has excellent water absorption, drainage, and water purification capabilities, and its water permeability, compressive strength, and durability are greatly improved relative to traditional concrete layers.

The utility model discloses a kind of pretreatment equipment for high-strength steel cable processing, it includes processing box, derusting box, cleaning tank and drying oven, the inside of the pretreatment box is provided with pretreatment cavity, fixed roller is rotated in the pretreatment cavity, three sector nozzles are fixedly connected in the both sides of the bottom of the pretreatment cavity, the bottom of the pretreatment cavity is provided with chute;The inside of the derusting box is provided with derusting cavity, inner cavity is provided in the derusting cavity, vibrator is fixedly connected outside the inner cavity, the inner cavity is filled with ceramic beads of specific particle size and hardness, and the abrasive made of ceramic beads is impacted and derusted by vibrator vibration, instead of traditional pickling process, while completely stripping the surface scale and rust layer of steel cable, the derusting mechanism can remove impurities in-depth steel cable gap, and no scratch is generated, the strength and tensile property of high-strength steel cable are completely retained, solve the problem of environmental hazards of chemical derusting.