51results about How to "Help recycling" patented technology

A process for removing Mg from phosphorus ore in order to prepare phosphoric acid by wet method features use of static microbubble floatation column, and includes such steps as breaking the crude phosphorus ore, grinding, classifying, mineralizing by mixing the reverse floatation chemical with ore sludge, and floatating in said static microbubble floatation column while conditioning the ore sludge to obtain the bubble-phase tailings and low-Mg phosphorus ore concentrate from the column bottom.

The invention relates to the technical field of manufacturing of artificial fiberboards, in particular to a method for producing a fiberboard containing an ultramicro amount of residual formaldehyde. The method for producing the fiberboard comprises the technological steps of preparation of adhesive, manufacturing of wood fibers, adhesive application, drying, mat formation and pre-pressing, hot pressing and obtaining of a finished product. According to the method, forest logging residues or wood processing residues or bagasse or other materials are used as raw materials for producing the fiberboard, waste materials are changed into valuable things, and full utilization of wood resources is effectively achieved; the adhesive used for producing the fiberboard is adhesive containing only a micro amount of residual formaldehyde, in this way, environmental friendliness and safety are achieved, and the fiberboard has good water resistance and high bonding strength; the fiberboard produced by using the adhesive hardly contains residual formaldehyde and high in binding powder; the content of substances harmful to human bodies is low, the substances harmful to the human bodies hardly exist, and thus harm to the human bodies is reduced; in addition, the internal structure of the board is uniform, the density is proper, the dimensional stability is high, the quality is stable, and the service life is long.

The invention discloses environment-friendly construction waste treatment equipment for civil engineering, and relates to the technical field of civil engineering. The environment-friendly construction waste treatment equipment for the civil engineering comprises a machine body, wherein a feeding hopper is arranged at the top end of the machine body, a crushing mechanism is arranged above the interior of the machine body, a vibration screening mechanism is arranged in the middle of the interior of the machine body, a collecting mechanism is arranged at the bottom of the interior of the machine body, one side of the machine body is connected with a first discharging pipe corresponding to the vibration screening mechanism, and one side of the bottom of the machine body is connected with a second discharging pipe communicating with the collecting mechanism. According to the environment-friendly construction waste treatment equipment, through the arrangement of a cleaning brushing mechanism, the crushing mechanism can be cleaned and brushed, so that the crushing mechanism is cleaned, crushed materials are effectively prevented from remaining on the crushing mechanism, rapid crushing of waste materials is facilitated, the crushing efficiency of the crushing mechanism is greatly improved, and the working efficiency of the equipment is improved favorably.

The invention discloses a method for recovering nickel resource in a waste acid system. The method comprises the following steps: (1) adding a lime neutralizer into waste acid, adjusting the pH value to 4.0-4.5, reacting for 10-30 minutes, and carrying out filter pressing to obtain filtrate A and filter residues A; (2) adding a strong alkali neutralizer into the filtrate A, adjusting the pH value to 5.5-8.5, reacting for 30-60 minutes, adding a carbonate neutralizer, and adjusting the pH value to 9.0-11.0 to obtain a mixed solution; (3) adding a heavy metal remover into the mixed solution, stirring, and carrying out filter pressing to obtain filtrate B and nickel mud; and (4) drying and dehydrating the nickel mud to obtain a nickel product. According to the method, three-step neutralization is carried out by using different neutralizers in sequence, the recovery rate of nickel in the waste acid and the purity of nickel products can be effectively improved, pollution to the environment is reduced, the process of the recovery method is simple, the price of the used neutralizers is low, and the cost can be greatly reduced.

The invention discloses a dye coating device for spinning, and relates to the technical field of spinning. The dye coating device for spinning comprises a base, wherein a feeding roller, a coating boxand a material collecting roller are sequentially fixedly arranged on the base; non-woven fabric wound on the feeding roller passes through the coating box and is connected to the material collectingroller; a printing and dyeing assembly, a stirring assembly and a drying assembly are arranged in the coating box; the stirring assembly is arranged in the printing and dyeing assembly; the drying assembly is arranged at the right upper side of the printing and dyeing assembly; and an auxiliary assembly and a uniform-coating assembly are further arranged in the coating box. The stirring assemblyarranged in the printing and dyeing assembly can achieve effective stirring effect, so that color is conveniently regulated, and dyeing effect is further favorably improved, and therefore, practicability is high; and an auxiliary assembly can be arranged to improve integral functionality, so that recycling of dyes and drying of non-woven fabric are facilitated.

The invention discloses a method for extracting chlorophyll and aromatic oil from leaves of Zanthoxylum bungeanum. The method comprises the following steps: picking fresh leaves of Zanthoxylum bungeanum; grinding the leaves into slurry; filtering the slurry to respectively obtain a first filtrate and first filter dregs; adding ethanol into the first filter dregs, then performing filtration to obtain a second filtrate and second filter dregs; mixing the first filtrate and the second filtrate to obtain a mixed filtrate; adsorbing chlorophyll in the mixed filtrate by utilizing an adsorption column, with the mixed filtrate adsorbed by the adsorption column being Zanthoxylum bungeanum leaf juice, and eluting the adsorption column to extract the chlorophyll; distilling the Zanthoxylum bungeanumleaf juice to obtain an oil-water mixture; storing the oil-water mixture in a sealedpool, and uniformly and continuously injecting air into the sealed pool; transferring the sealed oil-water mixture into an oil-water separator, and obtaining aromatic oil in a high-speed centrifugal state; and adding an acetone-ethanol mixed solution into the second filter dregs, uniformly stirring the mixture, filtering the mixture to obtain a filtrate, and concentrating the filtrate to recover acetone and ethanol and to obtain chlorophyll. The use amount of the organic solvent is reduced.

The invention provides a self-repairing and recoverable polyimide insulating film as well as a preparation method and application thereof, and belongs to the technical field of insulating films. Comprising the following steps: S1, carrying out first polymerization reaction on an amino monomer and 4, 4 '-(4, 4'-isopropyl diphenoxy) bis (phthalic anhydride) to obtain an amino-terminated copolymerized polyamide acid solution; the amino monomer comprises 1, 4-bis (4-amino-2-trifluoromethyl phenoxy) benzene and/or 9, 9-bis (3-fluoro-4-aminophenyl) fluorene, and the amino monomer comprises 1, 4-bis (4-amino-2-trifluoromethyl phenoxy) benzene and/or 9, 9-bis (3-fluoro-4-aminophenyl) fluorene; s2, carrying out azeotropic water removal treatment on the copolymerized polyamide acid solution and an organic solvent to obtain polyimide powder; s3, carrying out a second polymerization reaction with a tri-aldehyde group cross-linking agent; and S4, carrying out a thermal cross-linking reaction at the temperature of 250-300 DEG C. The film disclosed by the invention can be recycled and repaired for multiple times, and has the advantages of low dielectric constant, good mechanical property, high thermal stability, high insulation characteristic and excellent insulation property recovery capability.

The invention provides an intelligent garbage sorting system. The intelligent garbage sorting system comprises a base, a box body, a control cabinet, a garbage classification cabinet, a grabbing and classifying device, an image collecting device, a feeding port and a garbage recognition and classification module, wherein the box body is arranged on the base, the control cabinet is arranged on one side in the box body, the garbage classification cabinet is arranged in the box body and adjacent to the control cabinet, the grabbing and classifying device is arranged at the upper part of the garbage classification cabinet in the box body, the image collecting device is arranged below the grabbing and classifying device, the feeding port is formed in the top of the box body, and the garbage recognition and classification module is used for recognizing garbage. According to the intelligent garbage sorting system, the image collection device is arranged below the grabbing and classifying device, an image of the garbage is collected when the garbage is grabbed, and the image is transmitted to the garbage recognition and classification module through a controller to be recognized; and meanwhile, according to garbage information fed back by the garbage recognition and classification module, the controller controls the grabbing and classifying device to grab and move the garbage into sub garbage cans of the corresponding types, so that the garbage is classified and treated, the sorting precision is improved, the labor amount of garbage classification is reduced, the pollution of the garbage to the environment is reduced, and meanwhile, the recycling and cyclic utilization of resources are facilitated.

The invention belongs to the technical field of water pollution control in environmental protection and relates to wastewater treatment in the printing and dyeing process, in particular to a method and a device for separately treating alkali-decrement wastewater according to the quality. The method comprises the steps as follows: 1) electrodialysis of concentrated alkali-decrement alkaline water for liquid alkali recovery: concentrated alkali-decrement alkaline water is collectively collected and pumped into an electrodialysis device, and separated regenerated alkaline water is supplemented with sodium hydroxide and reused in an alkali-decrement production link; 2) acidification and filter pressing of alkali-decrement washing wastewater and diluted electrodialysis alkaline water for separation of terephthalic acid; 3) filtrate neutralization: filtrate is neutralized until the pH ranges from 6 to 8.4 with an electrodialysis regenerated alkali liquid; 4) degradation of remaining organic matter with a biological method. According to the developed technology for separately treating alkali decrement wastewater according to the quality, alkali and terephthalic acid in the alkali-decrement production wastewater are recovered step by step, the dosage of acid and alkali is reduced, the impact of the alkali-decrement production wastewater on a biological system is reduced, and the method has the advantages that energy consumption is low, the dosage of agents is small and the like.

The invention provides a tailing pre-discarding method for andalusite ore separation. The tailing pre-discarding method comprises the following steps: 1) andalusite crude ores are crushed until the particle sizes are not more than 20 mm; 2) the crushed raw materials are burned in a high-temperature furnace at the burning temperature of 700-900 DEG for 10-20 minutes, and then the crushed materials are cooled to room temperature in a cooling bed; and 3) the cooled materials are subjected to dry process selective ore grinding, ore grinding products are subjected to dry process grading so as to remove tailing discarding materials, and the residual materials enters into the sequent ore separation work to carry out separation and purification. According to the invention, some gangue minerals are removed by tailing discarding before separation, so that water resources are saved, the sequent separation efficiency is improved, and the ore separation cost is reduced.

The invention discloses a household domestic garbage smashing treatment device which comprises a shell. A ring-shaped lining plate, a sliding inner shell, a fixed blade, a smashing rotating shaft anda material guide bottom plate are arranged in the shell. A sliding feeding port is formed in the upper end of the sliding inner shell in an integral forming manner. An upper cover is arranged at the upper end of the sliding feeding port. Rotating screen plates are arranged on the two sides of the ring-shaped lining plate. Pushing rods and rolling wheels are arranged at the lower end of the slidinginner shell. A rotating blade and a rotating bearing are arranged on the periphery of the smashing rotating shaft. A motor and a supporting bottom rod are arranged at the lower end of the shell. Theleft wall of the shell is provided with a discharging port, a discharging pipe and a filtering cover. The inner wall of the right side of the shell is provided with an air injection pipeline and an air pump. The lower end of the supporting bottom rod is provided with a blind hole, a sliding bottom rod, a pad, a ring-shaped sliding sleeve and a corrugated pipe. The household domestic garbage smashing treatment device can collect sewage, efficiently smash materials and collect the materials, the materials are processed only by pressing when being needed, use is convenient, and supporting is stable.

The invention relates to the field of chemical synthesis processes, in particular to a high-purity trioxymethylene refining system and process. The system comprises a gas-liquid extraction tower and a benzene recovery tower; a water washing tower is arranged between the gas-liquid extraction tower and the benzene recovery tower; and trioxymethylene crude gas firstly enters the gas-liquid extraction tower to be extracted with benzene, a solution at the tower bottom enters the water washing tower to be washed, overflow liquid at the tower top of the water washing tower enters the benzene recovery tower for benzene separation, and refined high-purity trioxymethylene is obtained. According to the process, the problems of high formic acid content, high water content and the like in the trioxymethylene component can be solved, the trioxymethylene content is increased to 99.9%, and a high-quality comonomer is provided for polymerization reaction.

The invention relates carbon nitride nanosheet (CNNS) composite pH-sensitive hydrogel with a Pizza structure as well as a preparation method and application of the CNNS composite pH-sensitive hydrogel. Acrylic acid solution is irradiated by ultraviolet under a certain condition to be directly polymerized into a polyacrylic acid (PAA) film, a certain mass of CNNS is deposed on the PAA film as a substrate, then, CNNS/PAA and an acrylamide solution are irradiated by an xenon lamp under filtering by a 420 nm optical filter, and the CNNS can initiate the acrylamide to be polymerized on the CNNS/PAAto produce Pizza CNNS composite hydrogel with an interpenetrating network structure. The prepared PAM/CNNS/PAA with the interpenetrating network structure is found to have substantially improved tensile strength as compared with PAA, besides, the film form structure of the PAM/CNNS/PAA composite hydrogel is different agglomeration hydrogel structures of common organic polymeric materials and photocatalytic materials, the adsorption function of PAM and the photodegradation function of the CNNS and PAA can cooperate in printing and dyeing wastewater treatment, and meanwhile, the problem of difficulty in recovering multiple photocatalysts.