1024results about How to "Realize secondary use" patented technology

This invention discloses a method for treating zinc-containing dust generated in electric furnace. The method comprises: mixing zinc-containing dust with carbon, balling, oven-drying to obtain carbon-containing balls, adding into a converter, calcining at a high temperature to reduce into zinc vapor, introducing into an oxidation chamber, introducing air to oxidize zinc vapor into zinc oxide vapor, introducing into a cooling chamber, cooling to obtain zinc oxide powder, introducing into a dust collection chamber, collecting zinc oxide powder, introducing the carbon-containing balls into a cooler, and cooling to obtain semi-metallized balls. The zinc oxide powder has purity above 90%; the semi-metallized balls have metallization rate above 60%, TFe content above 50%, and zinc content below 2%. The method has such advantages as high utility of zinc-containing dust, low cost and no pollution.

The invention relates to a normal-pressure low-temperature liquid phase in situ hydrophobic calcium sulfate crystal whisker preparation method, in which sodium sulfate waste water is adopted as a raw material. The preparation method comprises the steps: a certain amount of calcium salt of 0.5 to 1mol/L is added in a three-necked bottle, a surface active agent is added thereto, and after the mixture is evenly blended, a certain amount of sodium sulfate waste water is added, the temperature is increased to 30 to 70 DEG C, the mixture is blended at a constant temperature to cause the crystallizing reaction for 3 to 7 hours, the obtained white product is dried and treated byheat at the temperature of 60 to 200 DEG C after being filtered and cleaned, the calcium sulfate crystal whisker powder with the diameter of 1 to 2 micron, the length of 30 to 50 micron, and the length-diameter ratio of 15 to 50 is obtained, the filtered fluid is a salt solution as much again as the raw material, sodium chloride is produced based thereon, and the secondary utilization of the waste fluid is realized. The invention has the advantages that the sodium sulfate waste water is simply treated during the preparation process, the process is simplified, the energy resources are saved, the cost is reduced, the recycling and utilization of the renewable resources are realized, and the product is provided with higher economic value and social value.

The invention discloses a method for activating and regenerating waste industrial activated aluminum oxide. The method comprises pretreatment, cleaning liquid impregnation treatment and regeneration treatment; adopted cleaning liquid is selected from at least one of acid liquor and alkali liquor and surfactant solution; the regeneration treatment comprises regenerated liquid impregnation and calcination treatment, and adopted regenerated liquid is selected from aluminum-contained solution; the calcination treatment is performed under air atmosphere, and air inlet amount is 300 to 800 m<3>/(h.t). According to the method for activating and regenerating the waste industrial activated aluminum oxide provided by the invention, an original pore structure channel is dredged through a physical and chemical method, and a new pore structure is regenerated on the basis of the existing pore structure to obtain activated aluminum oxide with high specific surface area and high pore volume.

The invention relates to the field of preparation of lightweight ceramsites, in particular to a lightweight ceramsite prepared from waste foundry ash and waste sand, and a preparation method of the lightweight ceramsite. The lightweight ceramsite is prepared from the following components in parts by weight: 95 parts of waste foundry sand and waste ash, 3 to 7 parts of bauxite, 0.1 to 0.5 part of rubber powder and 0.1 to 0.3 part of polyvinyl alcohol, wherein the weight ratio of the waste foundry sand to the waste ash is (8 to 2) to (9 to 1). According to the preparation method disclosed by the invention, the waste foundry sand and the waste ash are directly used for preparing the lightweight ceramsite, and classification treatment of the waste ash and the waste sand are not needed; in addition, special requirements on the granularity of the waste ash and the waste sand are avoided, and all the waste foundry ash and waste sand can be disposed by using a set of equipment, so the preparation method has the advantages of simple preparation technology, small input quantity of the equipment and few hardware requirements on sites and the like; meanwhile, resources are saved and environmental pollution is reduced by secondary utilization of the waste foundry ash and the waste sand.

The invention provides large-output low-temperature circulating grain drying equipment. The drying equipment comprises a lower rack, wherein a drying machine body is installed at the upper part of the lower rack; a retention section is arranged at the upper part of the drying machine body, a drying retention section is arranged at the middle part of the drying machine body, and a grain discharge section is arranged at the lower part of the drying machine body; a hot air passage and an exhaust air passage are arranged on the two sides in the drying machine body respectively; an elevator is installed inside the exhaust air passage and runs through the whole exhaust air passage; an elevator head is installed at the top of the exhaust air passage; an elevator tail is installed at the bottom of the exhaust air passage; the bottom of the drying machine body is connected with a discharge circulating device; an air feeder communicated with the exhaust air passage is also installed outside the exhaust air passage; an air separation device is also installed at the elevator head; a uniform shedding device is connected at the outlet of the air separation device and is arranged at the top of the drying machine body; air inlet vent pipes and air exhaust vent pipes are arranged in the drying retention section of the drying machine body and are alternately arranged up and down at intervals; a control cabinet is installed at the lower part of the lower rack. The drying equipment has high work efficiency.

The invention relates to a method for manufacturing bricks by using household garbage. The method comprises the following steps of: crushing and mixing 40 portions to 70 portions of non-combustible garbage, 10 portions to 20 portions of coal gangue and 20 portions to 40 portions of clay, adding 20 percent to 30 percent of water into the mixed material, mixing evenly and preparing adobes by dry pressing under the pressure; placing the adobes into a tunnel kiln; introducing the gas generated by the gasified burnable garbage in a gasifying furnace into the tunnel kiln to be as fuel; and obtaining the adobes by roasting at the temperature of 1050 to 1100 DEG C. The method can adopt the gas generated by the burnable garbage after gasification as fuel for high-temperature burning, fully realizes the effective utilization of the household garbage and reduces the production cost of the brick; the material contains the coal gangue which can sinter by self-combustion under high temperature and provide heat; and the method has short production time, simple technique and easy operation, saves energy and is beneficial to environmental protection. By inspection, the pressure resistance of the brick can be up to 8MPa.

The invention discloses a zinc catalyst applicable to controllable depolymerization of a polyester material and a catalytic method thereof, and belongs to the technical field of polyester depolymerization. The problems that an existing zinc catalyst used for alcoholysis of waste polyester materials needs to synthesize complex ligands, and the number of synthesis steps is increased are solved. Thecatalyst adopted by the invention is a bis(hexaalkyldisilazane)zinc catalyst with a simple structure, and under the participation of an alcohol compound, the polyester material can be depolymerized into small organic molecules under mild conditions through the transesterification reaction catalyzed by the catalyst, so that the reutilization of waste polyester is realized. The zinc catalyst is adopted to catalyze polyester depolymerization, metal zinc is non-toxic, colorless, cheap and easy to obtain and serves as one of the microelements of a human body, biocompatibility is good, and the production process is more environmentally friendly; the catalyst is simple in structure, few in synthesis steps and more economical in production cost. The catalyst has very good universality, and has a very good depolymerization effect on various polyester materials with different structures.

The invention discloses an iron tailing sand doped high-strength concrete, and preparation and applications thereof. The iron tailing sand doped high-strength concrete comprises 285 to 291kg of cement, 89 to 91kg of fly ash, 178 to 182kg of mineral slag, 41.5 to 42.4kg of silicon ash, 1149 to 1173kg of cobblestone, 403 to 412kg of iron tailing sand, 154 to 169kg of water, and 8.9 to 9.1kg of a water reducer. The preparation method is simple; iron tailing sand is a mining site discharged waste, and is recycled directly after sieving; waste is changed into valuables via adjusting concrete self structure; requirements on green construction by the states are satisfied; problems such as large iron tailing sand accumulation amount and low utilization rate are solved; the municipal environment and the surrounding environment are improved at the same time; the iron tailing sand doped high-strength concrete can be applied in infrastructure construction, urbanization, and shantytowns transformation.

The invention discloses a road repairing device, and belongs to the technical field of road repairing. The road repairing device comprises a vehicle body, a breaking and flat ramming mechanism, an asphalt filling mechanism and a compacting roller, wherein the breaking and flat ramming mechanism, the asphalt filling mechanism and the compacting roller are sequentially mounted on the vehicle body from the front end to the rear end in the marching direction of the vehicle body; the breaking and the flat ramming mechanism comprises a flat ramming gravity plate, and a drill bit which is fixed to the lower surface of the flat ramming gravity plate; the upper part of the flat ramming gravity plate is connected to a vibrating motor; a rotating shaft and a sector turntable which is fixed to one side of the rotating plate are arranged right above the vibrating motor; an arc-shaped hole is formed in the sector turntable; a moving rod which vertically passes through the arc-shaped hole is arrangedin the arc-shaped hole; a connecting rod is connected between the moving rod and the vibrating motor; two ends of the connecting rod are correspondingly hinged with the moving rod and the vibrating motor. According to the road repairing device, a broken and old pavement can be hammered and vibrated to realize combined breaking through one mechanism, and the broken pavement can be completely rammed, levelled and compacted; in addition, related acting strength is high; the breaking effect and the flat ramming effect are good.

The invention discloses a brackish water desalination method and a brackish water desalination device. The essential of the technical scheme of the invention is as follows: the brackish water desalination method comprises the steps of cleaning and filtering treatment, ultrafiltration treatment, pressurization treatment, reverse osmosis desalination treatment, reverse osmosis thick-water nanofiltration softening treatment, nanofiltration thick-water energy recovery treatment, nanofiltration thick-water ultrafiltration backwash treatment, ultrafiltration backwash wastewater drainage treatment, product water mineralization and carbonation treatment, product water sterilization and taste improvement treatment, purified water drainage and the like. The invention further discloses a brackish water desalination device. According to the brackish water desalination method and the brackish water desalination device disclosed by the invention, the problems of high production cost brought by addition of lots of chemical agents, low economical efficiency brought by low product water recovery rate, low health drinking performance brought by no deep aftertreatment on product water, and the like in the existing membrane-method brackish water desalination process are effectively solved.

The invention provides a heat dissipation system for an oven and the electric oven. The heat dissipation system for the oven comprises an air inlet, an air channel, an air outlet and a fan. The air inlet comprises an oven body air inlet and a door body air inlet, the oven body air inlet is formed in the front portion of the oven, and the door body air inlet is formed in the bottom of an oven door body. The air channel comprises a door body air channel, a first air channel and a second air channel, the door body air channel is communicated with the door body air inlet, and the first air channel is communicated with the oven body air inlet and the door body air channel. The air outlet is formed in the rear portion of the oven and is communicated with the second air channel. A fan exhausts air inside the first air channel into the second air channel. According to the technical scheme, users are effectively prevented from being scalded by the hot air exhausted from the air outlet, and the safety of the oven is improved.

The present invention provides a preparation method of memristor, and relates to the memory manufacturing technology field. The problem of negative influence of semiconductor materials is effectively solved. The method comprises the steps: the step 1: collecting enough dried leaves; the step 2: obtaining ultrafine leaf powder for standby through adoption of collected leaves in the step 1 by employing the separation method; the step 3: dissolving the ultrafine leaf powder obtained in the step 2 into a ethyecellulose solution, and preparing a colloid; the step 4: taking fluorine doped stannic oxide transparent conducting glass FTO as a substrate, and employing the spin-coating method to perform spin coating of the colloid at one conductive surface of the substrate to form a film as a dielectric layer; the step 5: drying the substrate with the dielectric layer obtained in the step in a drying case with the temperature of 60 DEC G for more than 12 hours; the step 6: putting the substrate dried in the step 5 into a vacuum deposition device; and the step 7: taking the surface deposition metallic silver of the dielectric layer on the substrate as an upper electrode through the vacuum deposition method to obtain a memristor having a silver/leaf/FTO structure.

The invention discloses castable for a ladle collector nozzle adopting a corundum collector nozzle reclaimed material as aggregate. The castable is characterized by being prepared from the following raw materials in percentage by weight: 60 to 70 percent of acid-pickled corundum collector nozzle reclaimed material, 10 to 15 percent of corundum fine powder, 10 to 18 percent of corundum micro powder, 5 to 8 percent of binding agent and 0.1 to 1 percent of dispersion agent. The preparation method comprises the following steps: recovering the corundum collector nozzle from a steel factory, and packaging the corundum collector nozzle reclaimed material for standby use after the treatment of the sorting, iron removing, crushing and acid pickling process; weighing the raw materials according to the weight percentage; uniformly mixing the weighed materials, and uniformly mixing the materials with water; pouring the mixture into a designed ladle collector nozzle mold, and vibrating, pouring, drying and molding the castable. The corundum fine powder adopts the mixture of plate-type sintered corundum fine powder with the granularity of 20 to 45 micrometers and the granularity of 0 to 20 micrometers, and the mixing ratio is optimized, so that not only can the mobility of the castable be improved, but also the gap of the castable can be effectively filled, the dense of the castable can be enhanced, and the strength is remarkably improved.

The invention provides a resource mine repairing method. The method comprises the steps that a tailing resource in a tailing pond and/or a mineral resource of a rock stripping area or a dumping site are subjected to valuable element extraction; if tailings produced from the valuable element extraction procedure of the tailing resource and/or the mineral resource without the extracting value are suitable for deep processing, deep processing is conducted, and a target product is obtained; if the tailings are not suitable for deep processing, and a goaf or a subsidence area is filled with the tailings; harmless processing is conducted on occupied land of the rock stripping area or the dumping site and/or an industrial site; ecological restoration is conducted on the occupied land of the rock stripping area or the dumping site and/or the industrial site which is subjected to harmless processing and the goaf or the subsidence area subjected to filling. According to the resource mine repairing method, maximization of repaired land value is achieved, tailing-free, harm-free, hidden danger-free and all green repairing effects of a mine are achieved, the processing cost is low, and the economic benefit is good.

The invention provides a method for carrying out secondary equipment whole life cycle management by an electronic label. The method comprises the following stages of: building an electronic label recognition system; building relay protection factory information; building a relay protection standing book; importing the relay protection standing book; initializing electronic label codes; pasting labels; carrying out operation maintenance information maintenance an in operation maintenance management unit; carrying out patrol and examination management; and sharing information among systems, and the like. The method for carrying out the secondary equipment whole life cycle management by the electronic label provided by the invention has the advantages that the unified management of the standing book-card-object standing book and operation and transformation information of relay protection equipment is realized through building a relay protection equipment management system on the basis of RFID (Radio Frequency Identification) label unique marks; the information fine management to equipment plug-ins is realized; and the effective management of the whole life cycle including equipment installation, commissioning, operation and maintenance, unusual action and return is realized.

The invention discloses a production method and a production system for vanadium pentoxide. The production method comprises the following steps of breaking industrial ammonium vanadate filter cakes and then continuously adding the industrial ammonium vanadate filter cakes into drying equipment and drying by using high-temperature gas; enabling the dried ammonium vanadate to enter calcinating equipment for deaminizing oxidation to obtain mixer of powder vanadium pentoxide or vanadium oxide; and enabling the mixer of the powder vanadium pentoxide or vanadium oxide to enter melting equipment for melting and casting pieces to obtain flaky vanadium pentoxide. According to the production method, drying for dehydration, calcinating for deaminizing and melting and piece casing processes of ammonium polyvanadate or ammonium metavanadate are respectively operated in three sets of equipment; the temperature, the furnace charge stay time and oxidation supply atmosphere (hot air) can be effectively controlled according to different function phases of drying, deaminizing and oxidizing and optimal conditions, and thus each function phase is operated under the optimal condition and further stability, high quality and high yield are achieved. The production method can be used for producing flaky and powder vanadium pentoxide and the yield of metal vanadium is respectively greater than 99 percent.

The invention discloses 3004 aluminum foil and a preparing method and application thereof. The aluminum foil comprises chemical elements: by mass, 0.15-0.25% of Si, smaller than or equal to 0.55% of Fe, 0.14-0.2% of Cu, 1.02-1.15% of Mn, 0.95-1.1% of Mg, smaller than or equal to 0.05% of Cr, smaller than or equal to 0.15% of Zn, 0.015-0.025% of Ti, smaller than 0.1% of other chemical elements andthe balance Al. The 3004 aluminum foil is obtained by performing 3004 aluminum alloy smelting, refining, standing, online degassing and deslagging, casting, face-milling, uniform heating treatment, hot rolling, cold rolling, intermediate annealing, cold foil rolling and finished product annealing. With the combination of the various elements and the preparing process, the prepared aluminum foil has high strength and toughness, the thickness is greatly reduced when the aluminum foil is used as a container, use is convenient, and the consumption of the raw materials is reduced; and waste ring-pull cans can be adopted as a raw material, the consumption of the raw material is reduced, resources are reutilized, the source of the raw materials for preparing the aluminum foil is widened, meanwhile the burdens on the environment are avoided, the production cost is reduced, and the 3004 aluminum foil has quite good social economic benefits.