37results about How to "Solving the Recycling Dilemma" patented technology

The present invention discloses building waste treating and reusing process, which includes the following steps: classifying building wastes into waste concrete, waste stone material, waste ceramic, waste sintered brick and waste lime-sand brick; crushing separately into coarse grains and eliminating metal, timber and other impurity; milling into 5 mm below regenerated fine aggregate; sorting 0.15 mm below high quality fine aggregate and milling into regenerated fine powder material of 250-600 sq m/kg specific surface area; and preparing mortar, concrete, asphalt concrete and other building material with the regenerated fine aggregate and the regenerated fine powder.

A regeneration road building material produced by building wastes is used as a cushion material for the main roads and secondary roads and branches and construction roads of municipal roads. The regeneration road building material comprises special coarse aggregate, coarse aggregate, normally coarse aggregate, fine aggregate, fine grained soil, cement and water. The preparation method includes: separating; removing impurities; crashing and screening according to different sizes. A cement stable construction waste regeneration road building material is produced by adding the raw materials into cement and water for evenly mixing. The construction method of the regeneration road building material produced by building wastes includes: feed preparing and evenly mixing the regeneration material with cement by adding water and paving and tracking and measuring elevation; paving according to the elevation; measuring elevation and paving; static pressing twice and tracking and measuring elevation after each static pressing and paving according to the elevation; shaking pressing twice after static pressing and tracking and measuring elevation and paving according to the elevation and then again static pressing one time; rechecking elevation after pressing; measuring compaction thickness and determining or adjusting loose paving coefficient according to design requirements and the controlling the paving time from mixing with water to finishing paving no more than three hours when paving the regeneration material. The invention makes full use of construction waste materials to produce road building materials, which expands the source of building materials and solves the recycling problem of construction wastes and reduces environment pollution, so that the natural construction resources are fully utilized.

The invention relates to a method for preparing high phase transition enthalpy phase transition temperature-adjusting fiber from hydrolysis products of waste acrylic yarn, comprising the following steps of: reacting the hydrolysis products of the waste acrylic yarn, such as hydrolysis polyacrylonitrile and polyethylene glycol, according to proportion to prepare graft copolymer polyethylene glycolgrafted hydrolysis polyacrylonitrile; completely dissolving the polyethylene glycol grafted hydrolysis polyacrylonitrile in water, adding boric acid, stirring and completely dissolving, standing and defoaming to obtain a spinning stock solution; and preparing the spinning stock solution into high phase transition enthalpy phase transition temperature-adjusting fiber through wet spinning. Comparedwith the existing phase transition temperature-adjusting fiber, the phase transition temperature-adjusting fiber prepared by the method has the advantages of high phase transition enthalpy, stable phase transition and excellent durability and the like, and can be widely applied to the fields of textile and apparel, energy-saving building materials and certain special fields such as military industry, aerospace, etc.

A regeneration road material produced with waste concrete is used as a subbase material of roads and construction service roads and comprises waste concrete particles, cement, admixture, water reducer, expansion agent and water. The preparation method includes: separating; removing impurities, removing waste concrete contaminated by radioactive materials, heavy metals and other harmful impurities; crashing and screening; adding admixtures, water reducer, expansion agents, cement and water for mixing into a cement stable waste cement regeneration road material. The construction method of the regeneration road material produced with waste concrete includes: preparing feed according to the designed particle size and evenly mixing the cement and regeneration materials after adding water and paving in equilibrium continuously and uninterruptedly; rolling by using rollers to roll and shape the paving surface and compacting to the design required compaction degree; sprinkling for curing and sweeping away the soil sundries from the subbase surface and spraying prime coat asphalt with asphalt spray car. The invention makes full use of waste concrete to produce road materials, thereby expanding the sources of construction materials and solving the problem of recycling of waste concrete, so that the environment pollution is reduced and the natural construction resources are fully utilized.

The invention relates to a method for preparing a shape-stabilized phase change material by using acrylic fiber waste silks. The method comprises the following steps of: hydrolyzing the acrylic fiber waste silks into alkali liquid, obtaining an acrylic fiber hydrolysis product through ethanol precipitation, and then swelling and dissolving the acrylic fiber hydrolysis product; and mixing and reacting the acrylic fiber hydrolysis product and a mixture of polyethylene glycol, chain extender, catalyst and solvent to obtain a graft copolymer of the acrylic fiber hydrolysis product and the polyethylene glycol, wherein the graft copolymer has the solid-solid phase change characteristic. The shape-stabilized phase change material prepared by the method has the advantages of high heat enthalpy value, excellent thermal stability, simple preparation method, low cost, reclamation and recycle of the solvent and the like; and the method is a technique capable of realizing resource reutilization, energy conservation and environmental protection, and has broad market application space.

The invention discloses a method for selecting asbestos from asbestos-like minerals by a wet process by using ultrasonic waves, which is characterized by comprising the following steps: pulp preparingby stirring, dispersing, desanding, dehydrating, separating and collecting; specifically, adding the asbestos-like minerals and water into a stirred tank, fully dissolving the asbestos-like mineralsby stirring and dispersing the asbestos-like minerals in water to form asbestos pulp, then leading the asbestos pulp into an ultrasonic dispersion slot to be dispersed in an ultrasonic manner, fully dispersing asbestos fibers and simultaneously precipitating sand and stones in the asbestos pulp at the bottom of the ultrasonic dispersion slot naturally. The method causes no damage on the original ecological length of the asbestos, ensures low energy consumption and zero pollution, can be used for extracting the asbestos from asbestos mines, asbestos tailings, asbestos production dregs and marketable chrysotile. By the method, the extraction efficiency of the asbestos is high, the extraction ratio of the asbestos is close to 100%, the production efficiency is high and the production cost islow. The method uses no chemical assistants, thus avoiding water from being polluted by the chemical substances adopting the surfactants for mineral separation.

The invention relates to the field of environment-friendly recycling, in particular to a recycling device of an oiliness plastic bag. The technical problem to be solved is to provide a recycling device of an oiliness plastic bag. The recycling device of the oiliness plastic bag includes a transporting cutting mechanism, a deoiling separation breaking mechanism, a working table, a device protectiveshell, a plastic bag, and a control display screen. The transporting cutting mechanism and the deoiling separation breaking mechanism are arranged in the working table, the upper part of the workingtable is connected with the device protective shell, the transporting cutting mechanism is connected with the plastic bag, and the working table is connected with the control display screen. Accordingto the device, the problem that the oiliness plastic bag can not separate inner oiliness liquid so that the oiliness plastic bag can not be recycled is solved, and the purpose of protecting an environment can be achieved.

The invention provides a corrosion-resistant and scratch-resistant additive for crystal waste residue extraction coating materials, wherein the component of the formula comprises 100% of crystal waste residue. According to the present invention, the additive is extracted from crystal waste residue, the main component is crystal glass powder, the particles are fine, and the hardness of the crystal glass powder is up to 7 Mohs hardness; the additive further contains emery, cerium oxide and other powder, wherein the hardness of the powder is up to 9.5 Mohs hardness and is only inferior to diamond, and the powder is dispersed in the coating material so as to be uniformly distributed, such that the hardness, the impact resistance, the wear resistance, the scratch resistance and the corrosion resistance of the paint film can be improved; the cerium component in the crystal waste residue has the anti-ultraviolet effect and can protect the substance covered under the paint film; the crystal waste residue recovery and utilization problem is solved, and the crystal waste residue becomes the valuable resource again; and the corrosion-resistant and scratch-resistant additive prepared from the crystal waste residue has advantages of low cost and good effect, can replace the same product, and can save a lot of mining resources.

The utility model relates to a treatment facility for comprehensively recycling high-rise feces, which belongs to the field of waterless toilets. It includes a toilet. The inner wall of the toilet is divided into a front wall, a side wall, a rear wall and a bottom wall. The bottom wall is provided with a feces outlet. It is characterized in that: it also includes a feces pipe, and the feces outlet is located behind the rear wall of the toilet; For setting, the bottom wall gradually lowers from the lower end of the front wall of the toilet to the position of the excrement outlet, the excrement outlet is connected to the excrement pipe, and the excrement pool is arranged below the excrement pipe. In the present invention, since the bottom wall is gradually lowered, and the feces outlet is located at the rear of the rear wall, the feces can directly fall into the feces outlet under the action of gravity when going to the toilet to enter the feces pipeline. The feces produced on each floor of the building fall from the feces pipe into the septic tank. This process does not need to be flushed with water. The feces entering the feces pipe does not contain water, which ensures its organic content and can be recycled as farmland fertilizer. This structure is suitable for It is used by building residents.

The invention provides a recycling device and method of waste fiber type heat preservation materials. The recycling device comprises a fiber decomposing device, a vibrating screen device and a useable-fiber recycling processing device which are sequentially connected. The fiber decomposing device is used for decomposing/combing the to-be-processed waste fiber type heat preservation materials intomixed fiber, and the mixed fiber comprise aged and brittle fragmented fiber which is crushed in the decomposing/combing process and useable fiber with tenacity. The mixed fiber is output to the vibrating screen device. The vibrating screen device is used for separating the fragmented fiber from the useable fiber with tenacity in the mixed fiber. The useable-fiber recycling processing device is used for recycling the useable fiber. The recycling device and method of the waste fiber type heat preservation materials can efficiently conduct sufficient fibration on the waste heat preservation materials and respectively recycle the aged fragmented fiber and the useable fiber with tenacity, the processing capacity is high, the recycling rate is high, and the difficult problem of recycling of thewaste fiber type heat preservation materials can be effectively solved.

A sandblasting material extracted from crystal waste residue, the formula is: 100% crystal waste residue. It is extracted from crystal waste residue. The main component is crystal glass powder with a hardness of up to 7 Mohs hardness. There are also some powders such as corundum and cerium oxide with a hardness of 9.5 Mohs hardness, which is second only to diamond. It can be used as a sandblasting material. It produces good impact and cutting effect, and is suitable for sandblasting on the surface of glass, plastic, acrylic and metal parts. Moreover, the present invention solves the problem of recycling crystal waste, making crystal waste a valuable resource again. The sandblasting material extracted from crystal waste described in the present invention is cheap and effective, and can replace similar products, saving a lot of mining resources.

The invention discloses a solid powder antistatic agent and a preparation method thereof, and belongs to the technical field of powder antistatic assistants, the solid powder antistatic agent comprises the following raw materials: paint slag, conductive carbon black and graphene according to a mass ratio of (25-50): (25: 50): (1-2). The used graphene is few-layer graphene and/or multi-layer graphene with the carbon content not lower than 95%, and the paint slag is waste slag generated in the paint spraying process or residues of waste paint. The preparation method of the antistatic agent comprises the following steps: removing impurities from paint slag, and performing high-temperature pretreatment; then mixing with conductive carbon black and graphene at a high speed, and carrying out ball milling for 2-4 hours; and finally, sieving with a 600-mesh sieve. By adopting the technology provided by the invention, the paint slag is used for replacing conductive carbon black in a large proportion, so that the problem of environmental pollution caused by carbon black production is effectively reduced, and the problem of paint slag recycling is solved; the antistatic agent with a good antistatic effect is prepared.

The invention discloses a filling wood-plastic forming method for Tetra Pak package wastes, and belongs to the technical field of wood-plastic co-extrusion. The filling wood-plastic forming method forthe Tetra Pak package wastes comprises the following steps: breaking the Tetra Pak package wastes by using a granulator to form aggregates from the Tetra Pak package wastes; carrying out breaking treatment or crushing treatment on the aggregates by using a breaker or a crusher to obtain small particles; adding the small particles and other additives into a main extruder, melting, plasticizing andextruding, extruding a coating structure from a co-extrusion coating section, entering a cooling section of a die, and then extruding from a die orifice of the die to obtain a wood-plastic co-extrusion coated floor. The filling wood-plastic forming method for the Tetra Pak package wastes has the advantages of being simple and feasible, convenient to implement, low in cost, environment-friendly, free of pollution, and the like.