65results about How to "High waste rate" patented technology

The invention belongs to the field of building materials and relates to a method for preparing recycled fine aggregates with waste concrete as a raw material. The method comprises the following steps: collecting waste concrete and utilizing crushing equipment to crush the concrete to aggregate particles with maximum size being not beyond 5-10mm through single-stage crushing or multi-stage crushing; utilizing strengthening equipment to remove the mortar and cement paste adhering to the surfaces of the aggregate particles, eliminate the protruding edges of the aggregate particles and ensure the appearances of the aggregate particles to be smooth to realize strengthening treatment of the aggregate particles and removing dust in the strengthening treatment process; and screening the strengthened aggregate particles and removing dust in the screening process, thus obtaining the particles with size being not beyond 5mm, namely the finished products. The method has strong applicability and high waste utilization rate, provides a feasible new way for recycling various waste concrete and has great significance in environment protection and resource protection and even sustainable social development.

The invention relates to a light-weight block prepared by taking 'phosphorus solid waste' as a raw material and a preparation method of the light-weight block. The light-weight block and the method solve the problems of complicated technology, high energy consumption, long production period, low production cost and low waste utilization rate of the existing light-weight block preparation. The light-weight block is prepared by taking 55-65 parts of phosphorus tailing, 10-15 parts of carbide slag, 10-20 parts of salic active mineral admixture, 2-3 parts of phosphogypsum, 6-8 parts of cement and 3-5 parts of additive as raw materials, and carrying out crushing, wet ball milling, stirring, forming, gas forming, trimming, and steam pressing. The block is simple to construct, has a high waste utilization rate, can effectively stimulate potential activity of phosphorus tailings, saves energy, reduces consumption, and is environmentally friendly, low in production cost, low in cost, and outstanding in performance, and the raw materials are not required to be pre-dried, and are easy to obtain.

The invention discloses a Bayer process red mud and gangue porous sintered brick and a production method thereof. The porous sintered brick is prepared from the following raw materials: 60 to 75 parts of Bayer process red mud; 25 to 35 parts of gangue; 2 to 6 parts of tailings or wastes in chemical plants; and 0.5 to 3 parts of pore-forming agent. The preparation method of the brick comprises the following steps: after dehydrating the Bayer process red mud, mixing and uniformly stirring the Bayer process red mud and other ground raw materials, aging for 1 to 3 days, and adding water to stir aged powder in a stirring machine so as to obtain mud; carrying out extrusion forming on the mud under the extrusion pressure of 1.5 to 2.5MPa by adopting a stiff-plastic process so as to obtain a semi-finished product which accords with the specified dimension and the specified shape; and drying a mold brick and sintering the mold brick in a tunnel kiln to obtain the Bayer process red mud and gangue porous sintered brick. The product reaches the national strength standard of the sintered bricks. In the technology, the total use amount of industrial wastes is close to 100 percent; a large number of farmlands are saved; land resources are effectively protected; and the Bayer process red mud and gangue porous sintered brick and the production method thereof accord with the national policies of saving energy and reducing emission and have obvious environmental benefits, social benefits and economic benefits.

The invention discloses a pyrite beneficiation tailing autoclaved aerated concrete block, which is prepared from raw materials in part by weight: 10-75 pyrite beneficiation tailing, 0-75 river sand or sea sand or deposit sand, 15-24 lime, 5-10 cement, 1.0-2.0 plaster, 0.05-0.10 aluminum powder plaster and 0.05-0.10 foam stabilizer. The pyrite beneficiation tailing autoclaved aerated concrete block has the characteristics of light weight, heat preservation, heat insulation, sound insulation, high strength, fire prevention, moth prevention and the like, as well as good earthquake resisting performance and processing performance and favorability for mechanical construction and is an green and energy-saving and environment-friendly building material. The invention also discloses a production process of the concrete block, which comprises the following steps: taking various raw materials according to the stoichiometric ratio; preparing slurry from the raw materials; and injecting the slurry into a die by pouring, forming gas, standing and curing, cutting and stacking, carrying out heat-moisture procuring before an autoclave, entering the slurry for steam pressure curing and demoulding after discharging the autoclave; and obtaining pyrite beneficiation tailing autoclaved aerated concrete. The process has the advantages of remarkable energy-saving effect, low production cost and high clean production degree.

The invention relates to a high-activity crystal seed for concrete production and a preparation method thereof. The crystal seed is prepared by microwave strengthened calcination of the following components in percentage by weight: 70-90 percent of waste ceramic powder, 10-30 percent of pregrinded carbide slag powder and 2-5 percent of modified additive. The preparation method comprises the steps of: taking the components and mixing and grinding according to the proportion, and adding the modified additive in the mixing and grinding process; mixing and grinding until the Brinell specific surface area is 350-400m<2>/kg, homogenizing and placing into an electric heating furnace; and after heating to 800-1,000 DEG C, immediately transferring to a microwave oven with power 600-800W, heating for 90-120 seconds by microwaves and then grinding to 400-450m<2>/kg by adopting vibration grinding. The crystal seed can rapidly promote early hydration of a cement and mineral mixture, obvious improves the early strength of concrete, has good transitive ductility of later strength, no adverse effect on durability and obvious technical, economic and social environmental protection benefit and resource and energy saving.

The invention relates to a process for preparing a baking-free ecological brick from garbage burning fly ash. The method comprises the following steps: 10-40 parts by weight of the garbage burning fly ash is grinded, sieved and placed in a container, 5-15 parts by weight of sodium hydroxide and 20-40 parts by weight of water are added, mixing is carried out, and a reaction is carried out; 50-90 parts by weight of ordinary portland cement is added with stirring, and a mixed material is obtained; the material is injected into an ecological brick die for vibration compaction; after grouting, the die is placed in a constant temperature constant humidity climate box for maintenance, and the die is removed; after the die is removed, a brick body is placed in a water maintainer for maintenance, and the ecological brick is obtained. The process has the advantages of low operation cost, short disposal period, low secondary pollution, high waste utilization rate, effective stabilization of toxic substances in the garbage burning fly ash, and low toxicity leaching rate of the product; the prepared ecological brick does not need baking, and has the advantages of simple process and high efficiency.

The present invention relates to a building wall body material-coagulating stone brick and hollow block. Its raw material composition includes 11-28% of coagulating stone, 26-40% of coal slag, 32-43% of tails sand and the rest is water. The coagulating stone is a new type building material, and can be used as a substitute for cement.

The present invention relates to one kind of high activity mixture slurry with several mineral components and its preparation process. The high activity mixture slurry is prepared with waste cement slurry as cementing component 40-60 weight portions, wet fly ash accounting in solid 40-60 weight portions, modifier 1-5 weight portions and water 80-100 weight portions, and through wet grinding. The modifier consists of reinforcing agent 10-30 wt%, surface modifier 20-40 wt% and activator 30-50 wt%. The present invention has two kinds of waste utilized and possesses the features of simple production process, low cost, high activity, capacity of compounding high quality concrete, etc.

The invention relates to a production line and a process for recycling waste granite powder. The production line comprises a double-shaft beater, a straight-cylinder drying machine, a composite crusher, a vibrating screen, a plurality of storage silos and a stirring and packaging machine. A discharge outlet of the double-shaft beater is connected with a feed inlet of the straight-cylinder drying machine through a conveying belt. The composite crusher is arranged below a discharge outlet of the straight-cylinder drying machine. A discharge outlet of the composite crusher is connected with the vibrating screen through a lifter. The vibrating screen is connected with the storage silos through a wind pressure transfer device. The storage silos are connected with the stirring and packaging machine through a spiral conveyor. The process includes beating, drying, crushing, screening, mixing and packaging. The production line and the process provided by the invention have the advantages that the problems of environmental pollution caused by discharge of the substantial waste granite powder can be solved, powdery building materials can be produced, and production cost is reduced at the sametime.

The invention provides a conical-spout bushing plate integral punching extrusion compound forming die and a forming method. The conical-spout bushing plate integral punching extrusion compound formingdie comprises a female die, an embedded sleeve, a first extrusion female die, a second extrusion female die, an extrusion male die, a first stamping male die, a second stamping male die, a third stamping male die and a fourth stamping male die. Each die is replaced and used in different technological stages respectively. The forming method comprises the steps that a regular metal plate is placedin a die cavity formed in a press machine, a technology with extrusion and stamping combined is adopted and a baseplate and a discharge spout are integrally formed, and a blank is in a strong three-way compressive stress state, and generation of cracks in the forming process is avoided. The conical-spout bushing plate integral punching extrusion compound forming die and the forming method are characterized in that the forming precision is high, the machining process is simple, and production efficiency is high.

The invention provides a light permeable flexible rubber pavement brick and a preparation method thereof. The raw materials and the weight parts thereof are as follows: 900-1200 parts of waste rubberparticles, 300-420 parts of cement, 25-50 parts of silica fume, 0.6-1.2 parts of cellulose ether, 4-6 parts of a water reducing agent, 2-3.5 parts of water soluble epoxy resin and 120-150 parts of water. The method is as follows: mixing the cement, silica fume and cellulose ether evenly in proportion, then adding the waste rubber particles, and continuing stirring to make the mixture even; mixing80% of the water and 100% of the water reducing agent and stirring evenly, and then adding into the solid mixture to be mixing evenly; pouring 100% of the water-soluble epoxy resin into the remaining20% water, then adding into the mixture, stirring and mixing; loading into a mold, and performing static pressure molding; curing and demoulding. The pavement brick has high compressive strength, highwater permeability, light dead weight, flexibility and comfort, and good noise reduction and sound absorption performance.

The invention discloses a low grade fly ash mixed slurry used for concrete. The mixed slurry is prepared by wet grinding the following components by mass percent: 35-55% of low grade fly ash, 9-16% of industrial residue, 1-4% of modifying agent and 35-45% of mixing plant recycled water; and the mixing plant recycled water contains the quality of the water in the low grade fly ash. The invention also discloses a preparation method of the low grade fly ash mixed slurry used for the concrete. The invention provides a low grade fly ash mixed slurry used for the concrete and a preparation method, wherein the mixed slurry is high in activity, low in cost and high in waste utilization rate.

The invention belongs to the technical field of fillers, and particularly relates to a phosphorus-based salt mine goaf filler prepared from ardealite solidification salt waste. The phosphorus-based salt mine goaf filler is prepared from the following components in parts by weight: 10-30 parts of ardealite, 70-85 parts of salt waste, 0-0.2 part of a retarder, and 0-0.4 part of a plasticizer. The phosphorus-based salt mine goaf filler disclosed by the invention has the benefits that the waste utilization rate is high, and phosphatizing waste and salinizing waste are used as main raw materials, so that the preparation cost is low; the coagulation time can be adjusted, and the retarder is used for adjusting the coagulation time of the filler, so that enough filling time can be obtained; the stickiness is adjustable, and the plasticizer is used for improving the stickiness of the filler, so that the requirement of a filling technology is met.

The invention discloses a non-dismantling formwork with planting and heat preservation functions and a preparation method. The non-dismantling formwork comprises a plurality of formwork units of the same structure, wherein the multiple formwork units are spliced through rabbets, each formwork unit comprises a bottom plate arranged at the lower part and a plurality of planting cavities formed in the bottom plate, the interiors of the bottom plates are of hollow structures, heat preservation layers are arranged in cavities, the planting cavities are provided with planting openings, a drip irrigation water pipe is arranged in each planting cavity, the drip irrigation water pipe is connected with an external water source, and the bottom plate is connected with a mounting wall surface. According to the non-dismantling formwork, grouting and extrusion integrated forming is adopted, the formwork is formed by assembling the multiple formwork units, installation and greening of the building wall surface can be rapidly and efficiently achieved, the formwork units can be repeatedly used, resource consumption and product cost are greatly reduced, waterproof, energy-saving, heat-insulating, planting and greening functions are integrated, the whole system is made of inorganic materials, and the service life of an existing planting system is greatly prolonged.

The invention provides a cordierite-spinel multiphase material and a synthesis process thereof. The cordierite-spinel multiphase material is prepared from, by weight, 30-40 parts of coal gangue, 35-45 parts of aluminum profile factory sludge, 15-35 parts of stainless steel electric furnace water quenching slag and 0.8-1.8 parts of Fe2O3 powder. The synthesis process includes the steps that the coal gangue, the aluminum profile factory sludge and the stainless steel electric furnace water quenching slag are respectively subjected to drying, powder grinding, screening, mixing, continuous pulverizing, the Fe2O3 powder is added, and stirring is performed to obtain dry powder; 15-20 g of water is added to per 100 g of dry powder, distilled water is added, stirring and pressure molding is performed, firing is performed in air atmosphere at the temperature of 1300-1350 DEG C for 3-5 hours, and natural cooling is performed. The cordierite-spinel multiphase material has the advantage of being high in purity, high waste utilization rate, low in production cost and high in conversion rate.

The invention belongs to the technical field of building materials, and particularly relates to a ceramic tile polishing mud and kieselguhr-based microporous thermal insulation material as well as a preparation method thereof. The ceramic tile polishing mud and kieselguhr-based microporous thermal insulation material is prepared from a siliceous component, a calcareous component, a coagulated component, a gas-forming component, a gas-guiding component, a hydrophobic component and water; the siliceous component is prepared from modified ceramic tile polishing mud, kieselguhr and modified fluorogypsum; and the calcareous component is prepared from quicklime and modified carbide slag. According to the thermal insulation material provided by the invention, the waste utilization rate is high, the ceramic tile polishing mud, the fluorgypsum and the carbide slag can be resourcefully utilized, in the product structure, the porosity is high, the aperture is small and uniform, macro holes and micro holes coexist, the heat conductivity coefficient is low, the mechanical property is high, the water absorption rate is low, and therefore, the thermal insulation material can be widely applied tocivil buildings and industrial buildings in thermal insulation.

The invention relates to a light gypsum board capable of preventing neutron radiation, the gypsum board contains 19%-55% by mass of packaged porous solid waste, the packaged porous solid waste adsorbs a boric acid solution with the concentration of 0.2%-0.7%, and polymethyl methacrylate with the boron content of 0.5%-1% is used for packaging. The light gypsum board capable of preventing neutron radiation has good moderation and absorption effects on neutrons, is high in waste utilization rate, environmentally friendly, light in weight, capable of adjusting humidity and high in functionality, and various properties of the light gypsum board meet the requirements of GBT23451-2009 Lightweight Partition Board Standards for Building.