211results about How to "Fast recycling" patented technology

The invention relates to a water washing garbage treatment method, wherein a purpose of the invention is to achieve urban garbage resource comprehensive utilization. According to the method, urban garbage is cleaned by using a running water washing manner, processes of dehydration, drying, winnowing, ??fine sorting and the like are performed, and classification centralization comprehensive utilization is performed; the water washing garbage sewage is treated through a sewage purifier to be rapidly recycled; and the production process adopts a cleaning production process, and no secondary pollution is generated. According to the present invention, the integrated design comprises water washing garbage sorting classification, fertilizer production through organic matter fermentation, heat supply through combustible combustion, a biogas engineering technology, a sewage treatment system and a plurality of mature application technologies; the urban garbage is adopted as a new urban mineral resource, and a water washing garbage resource comprehensive utilization workshop is established in a garbage landfill collection field so as to eliminate garbage pollution hazards; and sustainable development of large-scale garbage treatment industry is promoted, high economic benefits, social benefits and environmental benefits are generated, and good benefits are provided for humans.

The invention relates to the field of chemical mechanical equipment, and provides an ammonification reaction vessel for rapidly recycling ammonia gas. The ammonification reaction vessel comprises a reaction vessel body, a stirring device is arranged in the reaction vessel, a feed inlet is arranged at the top of the reaction vessel, a discharge port is arranged at the bottom of the reaction vessel; a distance between the bottom of the stirring device of the stirring device and the bottom of the reaction vessel is 10-20cm, a annular gas distributor is installed at the reaction vessel bottom below the stirring device, a nitrogen pipe is installed at the top of the reaction vessel, and the nitrogen pipe extends along an inner wall of the reaction vessel to the vessel bottom and is communicated with gas inlets of the annular gas distributor; the annular gas distributor is composed of four arc pipes which are connected end to end, a central section of each arc pipe is installed at the reaction vessel bottom by a clamp, and an upper part of each arc pipe is opened with several uniformly distributed small holes; the ammonification reaction vessel has the advantages of simple structure, design benefit, and installation and maintenance convenience, substantially increases recovery speed of ammonia gas after reaction is carried out in the ammonification reaction vessel, reduces usage amount of nitrogen, and improves production power of the equipment.

The present invention provides a paper document recovery system and recovery method. The recovery system comprises an identity authentication unit, a display and control panel, an upper cover, a sliding rail, a scanning head, housing, a paper transport, a paper separation mechanism, a transition region, a storage box and a central control unit. The paper separation mechanism includes a slideway, paper-pressing glass, a first motor, a paper separation rotary table, a paper separation stripe, a paper separation baffle, an upper paper deflector, a lower paper deflector, an upper runner, a lower runner and a second motor. The transition region includes a transition region door, a pressing board, a third motor, a first lead screw, a fourth motor, a second lead screw, a feed belt, a fifth motor, a sliding block, a polished lever and a pallet. The storage box includes a first storage warehouse, a second storage warehouse, an infrared ray sensor, a roller, an electric control lock and a frame of the storage box. The present invention discloses a document recovery method based on the paper document recovery system at the same time so as to realize the self-service recovery of documents with unattended operation, with fast recovery speed and high accuracy.

The invention discloses a casting molding template and a casting molding process for constructional columns of infilled walls. The molding template comprises a lining template and a principal template, wherein the upper end part of the principal template is provided with a lining template installing slot for installing the lining template, the lining template and the principal template are assembled so as to form a constructional column template; and the lining template installing slot is provided with a horn-type feeding device, the lining template is a movable template which can carry out up-and-down motions or left-and-right motions on the inner wall of the principal template, and a template moving component is arranged on the outside surface of the lining template; and the molding process comprises the steps of 1, carrying out survey layout; 2, installing a reinforcement cage; 3, erecting the template; 4, installing the horn-type feeding device; 5, moving the lining template outwards; 6, carrying out casting construction; 7, moving back the lining template and removing the horn-type feeding device; and 8, removing the template. The casting molding template disclosed by the invention is reasonable in structure, simple in operation, economic, practical, time-saving, labor-saving and good in application effect, and can effectively solve various actual problems existing in the current construction on constructional columns of infilled walls.

The invention discloses a photovoltaic module recovery method. The method comprises the steps of placing a frameless photovoltaic module in a film peeling device, and peeling off a back plate of the frameless photovoltaic module at a first preset temperature to obtain a back plate and the peeled photovoltaic module separated from the back plate; and placing the peeled photovoltaic module in a high-temperature pyrolysis device, and pyrolyzing an adhesive film layer in the peeled photovoltaic module at a second preset temperature to obtain the separated battery piece and substrate. According tothe photovoltaic module recovery method, the back plate of the frameless photovoltaic module is peeled off to obtain the separated back plate and the peeled photovoltaic module, then the peeled photovoltaic module is pyrolyzed, and the adhesive film layer in the peeled photovoltaic module is completely pyrolyzed to obtain the battery piece and the substrate, so that the frameless photovoltaic module is completely separated and the complete and separated back plate, battery piece and substrate are obtained, and the recovery of the photovoltaic module is achieved; and the recovery rate is high,the cost is low, and the recovery processing speed is high.

The invention relates to an underground recovery method of a common combined mining working face hydraulic support, which is used in medium and small coal mines and solves the problem of coal mine hydraulic support recovery of medium and small mines. The method is as follows: from a working face, drawing the last but one hydraulic support to support on a coal wall side, hoisting to serve as an No.1 cover rack, and tilting the last one hydraulic support as an No.2 cover rack; withdrawing and exporting the hydraulic support which is the fourth from the bottom, and tilting the hydraulic support which is the third from the bottom as an No.3 cover rack; after withdrawing the hydraulic supports which are the fourth from the bottom, the fifth from the bottom and the sixth from the bottom, straightening the No.3 cover rack, the No.2 cover rack and the No.1 cover rack to gradually; and replacing all roof supports by the No.3 cover rack, the No.2 cover rack and the No.1 cover rack, thus, along with the withdrawing of supports, the three cover racks are alternately advanced to assure successive recovery of the combined mining face support. Thus, the invention has higher safety factor, simple working procedure and high recovery speed and saves manpower resource.

The invention discloses a photovoltaic module recovery method. The method comprises the following steps: obtaining a pre-processed photovoltaic module without a frame, a junction box or a back substrate; placing the pre-processed photovoltaic module in a heating device to perform high-temperature pyrolysis on an organic adhesive layer to obtain a pyrolyzed photovoltaic module; placing the pyrolyzed photovoltaic module in a heat preservation device for heat preservation to obtain a heat-preserved photovoltaic module; and cooling the photovoltaic module to normal temperature after heat preservation to obtain a photovoltaic cell, a solder strip and a front substrate which are separated from one another. According to the recovery method disclosed by the invention, the pre-processed photovoltaic module is subjected to high-temperature pyrolysis to obtain the pyrolyzed photovoltaic module,; the pyrolyzed assembly is subjected to heat preservation and cooling treatment in sequence, the photovoltaic cell, the welding strip and the front substrate which are separated from one another are obtained, separation and recovery of the photovoltaic assembly are achieved, completeness of a cell piece and the front substrate can be achieved, loss is small, the recovery rate is high, an acid solution does not need to be used for dissolution, and the recovery speed is increased. The invention further provides recovery equipment with the advantages.

The invention discloses a separating and impurity-removing method for graphene oxide. Vacuum filtration, cross flow filtration and a ceramic membrane are combined, rapid recycling of waste high acid of graphite oxide reaction liquid and efficient and low-cost removing of metal ion impurities in a graphite oxide solution are achieved, discharging of waste acid wastewater is reduced, the efficiency of preparing high-purity graphene oxide products is improved, and the separating and impurity-removing method is suitable for preparing small-scale high-purity graphene oxide products of scientific-research units and university laboratories, and is also suitable for preparing graphene oxide and grapheme products in an industrialization and large-scale mode.

The invention provides a high-power sulfur hexafluoride recovery recharging device. A sulfur hexafluoride electric device is connected with a main pipe of a busbar sequentially through a first hand valve, an adsorption tank, a first electric valve, a booster pump, a compressor, a second electric valve, a third electric valve, a first fan heat exchanger, a flooded shell-and-tube heat exchanger and a second hand valve, and a steel cylinder placed on an electronic balance is communicated with each branch pipe of the busbar. The connecting position of the sulfur hexafluoride electric device and the first hand valve is connected with a vacuum pump sequentially through a fourth hand valve and a digital display vacuum gauge and connected with the main pipe of the busbar sequentially through the second fan heat exchanger and a third hand valve. The connecting position of the first hand valve and the adsorption tank is connected with the connecting position of the third electric valve and the first fan heat exchanger through a pipe provided with a fifth electric valve. The connecting position of the adsorption tank and the first electric valve is connected with an inlet of the compressor through a pipe provided with an electric adjusting valve. The connecting position of the second electric valve and the third electric valve is connected with the main pipe of the busbar through a pipe provided with a fourth electric valve.

The invention belongs to the technical field of unmanned aerial vehicles, and relates to a vehicle-mounted unmanned aerial vehicle net bumping recovery device which comprises stand columns, connecting rod type synchronization mechanisms, damping mechanisms, supporting arms, a recovery net, oscillating bars and a vehicle platform. The two supporting arms are symmetrically and obliquely fixed to the vehicle platform; the stand columns are vertically downwards fixed to the top ends of the supporting arms in the vertical direction. One connecting rod type synchronization mechanism is fixed to the top end of each stand column; each connecting rod type synchronization mechanism is composed of a mechanism main rod, a first oscillating arm and a second oscillating arm, wherein the first oscillating arm and the second oscillating arm are fixed to the two ends of the mechanism main rod through rotating shafts, and the first oscillating arm and the second oscillating arm are connected together through a connecting rod. The top end of each first oscillating arm and the top end of each second oscillating arm are each connected with one oscillating bar, and the recovery net is fixed to the ends of the four oscillating bars. A nose of an unmanned aerial vehicle rushes at the net face of the recovery net 6 in the direction from a vehicle head to a vehicle tail. Wings of the unmanned aerial vehicle generate pull force to the recovery net 6 and drive the oscillating bars 7 to move to transmit the force to the stand columns 1; at last, the damping mechanisms 3 connected with the stand columns 1 complete energy absorption, and the unmanned aerial vehicle is safely recovered.

The invention relates to an alcohol recovery device, in particular to an alcohol recovery tower, which has a high recovery speed and high recovery purity and is economical and durable. The alcohol recovery tower comprises a distillation tower kettle (1), a distillation tower body (4), a high-level storage tank (6), a centrifugal pump (7), a condensation cooler (8), a filter (13), a preheater (9) and a vacuum storage tank (10), wherein the distillation tower body (4) is arranged above the distillation tower kettle (1); a heating pipe (2) is arranged inside the distillation tower kettle (1); two steam inlets (3) are symmetrically formed at the bottom of the distillation tower kettle (1); a filler (5) is arranged in the distillation tower body (4); one side of the distillation tower body (4) is connected with the high-level storage tank (6) provided with the centrifugal pump (7) through a pipeline; the other side of the distillation tower body (4) is connected with the condensation cooler (8) through a pipeline; the preheater (9) is arranged between the high-level storage tank (6) and the distillation tower body (4), and a steam heating way is adopted for the preheater (9); the vacuum storage tank (10) is arranged below the condensation cooler (8); one side of the vacuum storage tank (10) is provided with a vacuum pump (11); and the bottom of the vacuum storage tank (10) is provided with an alcohol outlet (18).

The present invention provides a process and device for recycling liquid phase ethane pipeline emptying liquid, and the device is composed of a valve, a heater, a compressor, a pump, a condenser, a gas holder, a pressure gauge, a thermometer, a flow meter, and a tanker; the heater can vaporize liquid phase ethane emptying liquid to safely and stably recycle the ethane emptying liquid; the condenser can liquefy ethane vaporized in the gas holder, and the pump can provide power for liquefied ethane emptying liquid to safely recycle the liquid phase ethane emptying liquid in an over-reach way; the compressor can provide power for vaporized ethane, to recycle the ethane emptying liquid from the tanker; the thermometer, the pressure gauge, and the flow meter can monitor temperature, pressure,and flow in a recycling process to further control the recycling progress. The present invention overcomes the problem that the conventional pipeline recycling process and device cannot recycle the liquid phase ethane pipeline emptying liquid which is prone to gas-liquid phase change and has high economic efficiency. Thus, the present invention has the following advantages of safe operation and high recycling economy.

A road cone recovery device for a traffic cone automatic retractable vehicle, including a clamp, the clamp includes a left outer splint, a right inner splint, a left inner splint, an inner splint wall, a hinge, a hydraulic cylinder, a microwave radar sensor, and the clamp and The first mandrel is connected with the U-shaped connecting arm, the U-shaped connecting arm is connected with the hydraulic telescopic arm, the hydraulic telescopic arm is connected with the second mandrel, and the gear surface at the end of the second mandrel is in contact with the gear surface of the stepping motor. When working, the microwave radar sensor senses the position of the traffic cone, the clamp fixes the traffic cone, the hydraulic telescopic arm shrinks to lift the traffic cone fixed by the clamp connected to the U-shaped connecting arm, and the stepping motor drives the hydraulic telescopic arm connected to the second mandrel to rotate , Transport the traffic cone to the designated location, the whole process does not require manual participation. A plurality of devices of the present invention are arranged outside the traffic cone automatic retractable vehicle to recover the traffic cones and improve work efficiency.

The invention relates to the field of rubber tyre recycling, in particular to a rubber tyre recycling device, and aims to solve the technical problem of providing the rubber tyre recycling device. Therubber tyre recycling device comprises a sand stone removing mechanism, a control screen, a steel ring separating mechanism, a steel wire gauze separating mechanism, a collecting trolley, a clampingbuckle, a storing cabinet and a waste tyre, wherein the control screen is arranged on the right side of the top of the sand stone removing mechanism; and the steel ring separating mechanism is arranged on the right side of the sand stone removing mechanism. The rubber tyre recycling device can simultaneously recycle a plurality of waste tyres, recycles complete steel rings of the waste tyres, efficiently cleans sand stones in crown cracks, also recycles steel wire gauze, greatly improves the quality after the waste tyres are smashed in the later period, also avoids the phenomenon that the generated sand stones damage the tool bit of a smashing knife, and is high in recycling speed, strong in stability and more convenient and fast to operate.

The invention discloses a method for extracting panax notoginseng saponins by using a continuous countercurrent ultrasonic extraction combined film technology, belonging to the technical field of extraction and separation of plant effective components. The method mainly comprises the following steps of: adding 40-90 percent ethanol having 6-15 times by weight of the pseudo-ginseng crude powder and carrying out continuous countercurrent ultrasonic extraction for 20-120min at a temperature of 20-50 DEG C with the ultrasonic frequency of 20-80KHz; carrying out membrane concentration on filtering liquid by using 1,000-2,500 parts of ultrafiltration membrane or 100-800 parts of nanofiltration membrane at 20-50 DEG C under 0.4-4.1MPa; adding water into the liquid for diluting after the filtering liquid is subjected to pressure reduction and concentrating to be alcohol-free, or directly adding water for diluting; filtering macroporous adsorption resins and eluting with water, and eluting by using 50-90 percent ethanol; carrying out membrane concentration on peralkaline anion resins by using 100-800 parts of nanofiltration membrane under 0.4-4.1MPa; decoloring; carrying out pressure reduction and concentration; and spray-drying. With low-temperature extraction, high extraction ratio, continuous production and high purification ratio, the quality of the product is guaranteed and the method is simple.

The invention discloses a ture triaxial rock test machine with a temperature control system. The machine comprises a loading component, a temperature control system, and a cooling component, wherein the loading component comprises a loading housing and a loading oil cylinder, and the loading housing is provided with adjusting screw holes and is internally provided with a loading chamber; the adjusting screw holes and movable push rods are screwed and assembled by screw threads; three loading rods for loading oil cylinders enter the loading chamber through the cooling components separately; wherein two loading rods and two movable push rods are respectively coaxial, and the third loading rod penetrates the top of the loading housing; the top of the loading chamber is also communicated with an exhaust pipe and an oil inlet, the exhaust pipe is communicated with an overflow bin after passing through a tube body whose height is not less than the height of the loading chamber, and the exhaust pipe is also provided with a reversing valve; the invention also discloses a temperature control method of the temperature control system. The temperature control method is equipped with a heating step and a cooling step which can automatically search optimum, in order to maximize heating or cooling efficiency of the oil body.

The invention belongs to the technical field of unmanned planes and relates to a vehicle-mounted unmanned plane adjustable net-catch recovery apparatus comprising stand columns, connection rod type synchronizing mechanisms, damping mechanisms, supporting arms, a recovery net, swinging rods and a vehicle platform. The two supporting arms are symmetrically and slantwise fixed on the vehicle platform; the stand columns are downwardly fixed on the top ends of the supporting arms in a vertical direction; one connection rod type synchronizing mechanism is fixed on the top end of each stand column; each connection rod type synchronizing mechanism is formed by a mechanism main rod, a first swinging arm and a second swinging arm; the first and second swinging arms are fixed on two ends of the mechanism main rod via a rotating shaft and connected together via a connection rod; the top ends of the first and second swinging arms are respectively connected with one swinging rod; and the recovery net is fixed on the end heads of the four swinging rods. An unmanned plane head runs toward a net surface of the recovery net (6) from the vehicle head to the vehicle tail part; wings of the unmanned plane produce pulling force to the recovery net (6) to drive the swinging rods (7) to move; then the force is transmitted to the stand columns (1); and at last, energy is absorbed by the damping mechanisms (3) connected with the stand columns (1), so the unmanned plane can be safely recovered.

The invention discloses a solid control system applied to a desert oil drilling process. The solid control system applied to the desert oil drilling process comprises a sieving box, a vibration motor, a supporting plate and a blowout prevention device. A feeding opening is formed in the position above one end of the sieving box, the other end of the sieving box is provided with a solid phase discharging opening, the sieving box is internally provided with a screen cloth frame, the screen cloth frame is internally provided with screen cloth, a liquid phase discharging box communicated with the sieving box is arranged below the solid phase discharging opening, the bottom of the liquid phase discharging box is provided with a liquid phase discharging opening, the side face of the liquid phase discharging box is connected with an exhaust column, the exhaust column is connected with an exhaust fan, and a plurality of spring baffle devices are arranged on the screen cloth frame at equal intervals in the direction from the feeding opening to the solid phase discharging opening. By means of the solid control system, after drilling fluid knocks the screen cloth, the liquid phase separated from solid phase particles enters the position below the screen cloth more easily, the screen cloth cannot be blocked, the handling capacity of a drilling fluid vibrating screen to the drilling fluid is increased, knock impulsive force generated when the drilling liquid knocks the screen cloth is increased, and the solid phase particles can be separated from the liquid phase more easily.

The present invention discloses a commercial operation system used in a shared item operation system, the commercial operation system includes an acquisition module, a storage module, a calculation module, a payment module, a collection module, a sending module, a receiving module and an evaluation module; The calculation module is used to calculate the rental accumulative times of each rented user when renting the shared item, the accumulated rental times of the shared item when the current user rents, the use fee and the preset return fee method. The corresponding return fee that the user needs to pay; the evaluation module is used to receive the usage status of the previous rented user using the shared item sent by the current user, and determine the The return delay value corresponding to the usage. The invention connects the shared item owner and the shared item renter, effectively reduces the maintenance cost of the shared item, and improves the profitability of the shared item operating system.

The invention discloses an automatic aired grain recovery machine. The automatic aired grain recovery machine is provided with a right-angled tripod with an armrest, and the height of the right-angled tripod can be adjusted up and down. A conveying belt is fixed to the right-angled tripod through a driving roller and a tail roller. A circular-arc-shaped groove which is concentric with the tail roller is mounted in the position of the tail roller. A shoveling plate is mounted at one end of the circular-arc-shaped groove. Shifting plates are mounted at one end of the circular-arc-shaped groove. The shifting plates are mounted on the shoveling plate, the shifting plates and the shoveling plate are used for conveying grains on an airing field into the conveying belt, the grains are delivered to a collection bin through the conveying belt, and the first time of collection is completed. A carriage is mounted at the other end of the circular-arc-shaped groove. A collection roller is mounted behind the carriage and connected with a motor through a belt. The motor transmits power to the collection roller, the collection roller sweeps and collects the residual grains to the circular-arc-shaped groove, the grains are conveyed to the conveying belt to be delivered to the collection bin, and the second time of collection is completed. According to the automatic aired grain recovery machine, grain waste due to incomplete first time of collection is avoided, and the efficient and rapid recovery effects can be achieved during agricultural practical application.

The invention relates to an electrolytically recoverable etching solution, especially for etching printed boards and molded parts from copper and copper alloys. Said etching solution is substantially constituted of water, ammonia, copper (II) sulfate, ammonium sulfate and optionally a vanadium-containing catalyst for increasing etching speed. The inventive etching solution is characterized by additionally containing methylene blue or its derivatives as a catalyst.

The invention relates to a clearing-up and recycling device, in particular to a road asphalt clearing-up and recycling device for construction. The road asphalt clearing-up and recycling device for construction aims at achieving the technical purpose of the high clearing-up and recycling efficiency. In order to achieve the above technical purpose, the provided road asphalt clearing-up and recycling device for construction comprises a trolley, a fixed rod, a sliding rail, a strut, a first spring, a shovel groove, a collection tank, a first bearing seat, a first rotary shaft, second springs, a driven wheel, a flat belt and the like. A guide hole is formed in the fixed rod. A rotary motor and a support are arranged on the right side of the fixed rod. The support is located below the rotary motor. A sliding sleeve is arranged at the top end of the right portion of the support. A roller is arranged on the right side of the rotary motor. By the adoption of the road asphalt clearing-up and recycling device for construction, the effect of the high clearing-up and recycling efficiency is achieved, the rotary motor of the device rotates forwards and reversely to drive the shovel groove to move leftwards and rightwards, road asphalt is shoveled and recycled, and the recycling speed is high.

The invention relates to a papermaking pulp separating and recovering device with a primary mixing function. The papermaking pulp separating and recovering device comprises a first supporting frame and a first drainage pipeline. A first filtering box is embedded in the upper end of the first supporting frame. A motor is connected with the middle of the lower end of the first filtering box. A sewage discharge table is arranged at the upper end of the first filtering box. A rotating shaft is placed at the lower end in the first filtering box. The papermaking pulp separating and recovering devicehas the advantages that sewage is discharged into the first filtering box through the sewage discharge table instead of being discharged into the first filtering box through a water pipe in the past,sewage can flow at the upper end of the sewage discharge table for a certain period of time, the sewage flowing face is uneven so that sewage can be blocked to a certain degree, the time of sewage staying at the upper end is prolonged, sewage can make sufficient contact with air, aeration is better conducted on sewage, and a preparation is made in advance for later-period sewage precipitation andmicroorganism method treatment.

The invention relates to an all-purpose escape system for subway locomotives. The all-purpose escape system comprises a sealing frame, a door leaf, an ejecting mechanism and a lock mechanism, wherein the sealing frame and the ejecting mechanism are fixed on a locomotive body; the opening direction of the door leaf faces forwards; one end of the door leaf is hinged to the front end of the ejecting mechanism; the door leaf adopts a structure that after the door leaf is ejected forwards in a translating manner, the door leaf rotates downwards; the lock mechanism is mounted on the inner side of the sealing frame in an integrated manner; when the door leaf is ejected in a translating manner by the ejecting mechanism and rotates, the door leaf automatically opens; when the door leaf withdraws to the middle of the sealing frame, the lock mechanism automatically performs locking. The escape system is light in weight, occupies a small space, is opened or withdrawn in one step, high in recovery efficiency, simple in structure, high in reliability, and large in pass width; besides, the escape system is guaranteed to be suitable for various locomotive types.

The invention discloses a method of recycling nickel, cobalt, iron and silicon from low-grade laterite nickel ore through a combined leaching process. The method includes the following steps: (a) performing washing classification to the low-grade laterite nickel ore to obtain high-silicon and -magenisum ore and low-silicon and -magenisum and high-iron ore; (b) adding heated high-silicon and -magenisum ore slurry and concentrated sulfuric acid into a double-screw material-pushing reactor; (c) dissolving reaction materials in water and performing solid-liquid separation and filter residue washing to obtain a normal-pressure leached residue, a normal-pressure leached liquid and a washing liquid; (d) performing pressurized leaching to the low-silicon and -magenisum and high-iron ore slurry and the normal-pressure leached liquid in a pressurized pot, wherein the Fe<3+> in the normal-pressure leached liquid is hydrolyzed to release acid for leaching the low-silicon and -magenisum and high-iron ore slurry again; (e) decreasing the temperature and performing the solid-liquid separation to obtain a pressurized leached residue and a pressurized leached liquid; (f) removing non-nickel and -cobalt impurities from the pressurized leached liquid, and recycling the nickel and / or the cobalt through a known method; (g) washing the pressurized leached residue through a sodium carbonate solution and washing the pressurized leached residue to obtain iron fine powder; and (h) screening the normal-pressure leached residue to obtain silicon dioxide and fine sand. The method is high in leaching rate of nickel and cobalt, is less in acid consumption and can effectively recycle iron and partial silicon.

The invention discloses a fishery feeding device with a wide application range. The device comprises a ship body, wherein the ship body is provided with an oil slick recovery device, the inner portionof the ship body is symmetrically provided with a plurality of sets of high-pressure water pumps on the left and right, each high-pressure water pump is provided with a lower water outlet pipe, an upper water outlet pipe, an outer water suction pipe and an inner water suction pipe, the side face of the ship body is provided with a lower water outlet and an upper water outlet respectively connected with the lower water outlet pipes and the upper water outlet pipes, the ship body is provided with a supporting seat, a first motor is arranged in the middle of the upper side of the supporting seat, an output end of the first motor is provided with a rotating column, the upper end of the rotating column is provided with a rotating seat, the lower side of the rotating seat is symmetrically provided with wheel carriers on the left and right, each wheel carrier is provided with a rotating wheel abutting the upper side of the supporting seat, the upper side of the rotating seat is provided witha storage box, the lower end of the left side of the storage box is provided with a feeding pipe, the feeding pipe is provided with a feeding pump, and the left end of the feeding pipe is provided with a spraying head. The fishery feeding device with the wide application range has the advantages that the structure is simple, the use is convenient, the application range is wide, the safety is good, and the river surface can be cleaned.

The invention relates to a method of separating preparation of volatile components from acorus tatarinowii, wherein the volatile components can include monomer compounds or a composition thereof. The method comprises following steps: (A) with the volatile components as a raw material, extracting a crude volatile extract from the acorus tatarinowii; (B) dissolving the crude volatile extract in an organic solvent to prepare a sample solution for separating preparation; and (C) performing separating preparation to the solution through super-critical fluid chromatography technology to obtain the acorus tatarinowii volatile components. In the method, the acorus tatarinowii volatile components are separated and prepared through the super-critical fluid chromatography technology, and at the same time, a new approach of preparing [alpha]-asarone, [beta]-asarone and [gamma]-asarone is developed. Through the super-critical fluid chromatography technology, the [alpha]-asarone, the [beta]-asarone and the [gamma]-asarone are prepared synchronously just through simple sample injection and separation at a high purity. The method is high in yield of products, is short in separation time and is high in efficiency.

The invention discloses a true triaxial rock test rig, comprising a frame base, wherein the bottom surfaces of two mutually parallel side support plates on the top surface of the frame base are connected fixedly, a frame top plate is fixed on the top surfaces of the side support plates; the top parts of four screw rods penetrate through the frame top plate and a lifting frame and are assembled with the frame base; the screw rods are screwed and assembled with the lifting frame through threads; the top parts of the screw rods extend out of the frame top plate, a screw rod belt pulley is fixed to each extending end, the four screw rods are connected with the screw rod belt pulleys at the top parts through a first lifting synchronous belt to form a belt driven structure, and one of the four screw rods is connected with another screw rod belt pulley and a motor belt pulley fixed to the output shaft of a lifting motor through a second lifting synchronous belt to form a belt driven structure; and a loading assembly is fixed in the lifting frame and comprises a loading shell, an adjusting screw hole is formed in the loading shell and a loading cavity is arranged in the loading shell. The invention also discloses a temperature control system and a temperature control method thereof of the true triaxial rock test rig.

The invention discloses a method for recovering nickel, cobalt, iron and silicon from laterite-nickel ore by a combined leaching process. The method comprises the following steps: adding muck ore slurry and concentrated sulfuric acid after heating into a double-spiral material pushing reactor; dissolving reaction materials in water, then performing solid-liquid separation, and washing filtration residues to obtain normal-pressure leaching residues, a normal-pressure leaching solution and a washing solution; preparing limonite ore slurry from the washing solution and limonite, adding the limonite ore slurry and the normal-pressure leaching solution into a pressurization kettle for pressurization and leaching, hydrolyzing Fe<3+> in the normal-pressure leaching solution to a hematite precipitate, and releasing acid to re-leach the limonite; reducing the temperature, and performing solid-liquid separation to obtain pressurized leaching residues and a pressurized leaching solution; removing non-nickel and cobalt impurities in the pressurized leaching solution, and then recovering nickel and / or cobalt by an existing method; washing the pressurized leaching residues with a soda ash solution, and then drying to obtain fine iron powder; and performing screening treatment on the normal-pressure leaching residues to obtain silicon dioxide and fine sand. The method disclosed by the invention has the advantages of short leaching time, high nickel leaching rate, low acid consumption and effective recovery of iron and part of silicon.