49results about How to "Expand the scope of recycling" patented technology

The invention relates to a heap bioleaching gold extraction technique of gold ore which has low grade and is difficult to process, which belongs to the metallurgical chemical industry type. The technique comprises the following steps: firstly, disintegrating ores which contain gold minerals to granulate and pile, secondly, doing acid treatment for ores, thirdly, utilizing microorganism to do biological pre oxidation for ores, cyaniding leaching after acid and alkali transformation, and finally, recycling gold. The technique of the invention has the advantages of low production cost, low energy consumption, low medicament consumption, low labor force demand, short technique process, simple equipment, easy application, low investment cost and wide resource utilization, which has no discharge gas, and can be considered as discharging without waste material and waste water in some extent, and the technique can improve the environment, which is beneficial for the environment, and increases production security.

The invention discloses a selective heap leaching gold extraction process for gold mine containing copper, belonging to the field of hydrometallurgy. The process comprises the steps of: smashing and heaping gold mine containing copper; carrying out alkali treatment on the mine; then adding ammonium salt and sodium cyanide according to a certain proportion to realize the selective leaching of the gold and the restriction to the leaching of the copper; and finally absorbing and extracting the gold from leaching solution by conventional active carbon. The invention has the advantages of simple process method, short procedure, simple equipment, easy implementation, high gold leaching efficiency, low consumption of sodium cyanide, low energy consumption, little investment and low cost, and is the gold extraction method with easy realization of industrialized production and favorable economical benefit.

The invention discloses a mooring rope buoy hooking aerial low-speed unmanned aerial vehicle non-destructive recycling system and method, relates to the field of low-speed unmanned aerial vehicle recycling, and aims to solve the problem of poor adaptability of an aerial recycling mode of an existing fixed-wing unmanned aerial vehicle. A buoy and a capture device are arranged outside an aerial carrier, the aerial carrier keeps angular speed v and runs along a circular trace with a radius R, so that the buoy can keep the angular speed v and runs along a circular trace with a radius r, R>r, a navigation system acquires the movement trace of the buoy and transmits trace signals to a low-speed unmanned aerial vehicle, the low-speed unmanned aerial vehicle enters the circular trace with the radius r according to the trace signals and gradually approaches the buoy until a hooking device is connected with the capture device in a mounted manner, the low-speed unmanned aerial vehicle is recycledinto a cabin of the aerial carrier, and recycling of the low-speed unmanned aerial vehicle is finished. The system and the method are applicable to aerial underway recycling of the low-speed unmannedaerial vehicle without autonomous landing capacity.

The invention provides a continuous crushing recovery treatment method for construction waste. The continuous crushing recovery treatment method comprises the steps that firstly, a user inserts wood rod materials such as bamboos into a feeding inlet of a feeding mechanism, the feeding mechanism pushes the inserted wood rod materials such as the bamboos to the upper part of a collecting bin, a cutting-off mechanism cuts off the wood rod materials such as the bamboos, and the cut-off wood rod materials fall into the collecting bin; then an advancing driving device is started, the advancing driving device drives the cut-off wood rod materials such as the bamboos in the collecting bin to move towards a lifting crushing tool, the cut-off wood rod materials such as the bamboos and the lifting crushing tool are extruded in an abutting mode, and the cut-off wood rod materials such as the bamboos are crushed; then, an automatic withdrawing device controls the advancing driving device to automatically reset; and finally, the steps are repeated, the advancing driving device operates continuously, the cutting-off mechanism continuously cuts off the wood rod materials such as the bamboos, an abutting-pushing block moves between a first fixing plate and a second fixing plate in a reciprocating mode along an abutting-pushing notch, and thus the wood rod materials such as the bamboos falling into the collecting bin are continuously crushed.

The invention relates to a method for extracting and recovering hemicelluloses in squeezed waste alkalis, belongs to the chemical fiber making industry field, and especially belongs to the processing field of the squeezed waste alkalis in the viscose fiber production making process. Hemicelluloses in the squeezed waste alkali are recovered through neutralizing, precipitating, filtering and drying steps. The method adopts alkalescence as a neutralizing end point, and the polymerization degree of the hemicelluloses is high, so the recovery rate can reach above 80%. The finally obtained hemicelluloses comprise 95% or more of the hemicelluloses (oven dry) and 0.5% or less of ash, and can be sold directly or exploited as a next-step synthesis raw material.

The invention discloses an efficient and environment-friendly recovery method for precious metal palladium in a retired solid oxide fuel cell. The method comprises the steps that after being disassembled and crushed, the retired solid oxide fuel cell is put into octylphenol polyoxyethylene ether to remove organic substances, and the retired solid oxide fuel cell is dried after being washed; powderobtained in the previous step is lightly fired and is soaked in a eutectic solvent for a period of time, filtering is carried out, and filter residues are washed multiple times with distilled water;the filter residues are put in prepared [Hbet] [Tf2N] ionic liquid to be subjected to Pd leaching; and after leaching is completed, a three-electrode system is constructed with a leaching solution asan electrolyte for electrodeposition of Pd, after deposition is completed, a deposition solution is put in centrifugal equipment to be separated to obtain Pd, and the simple substance Pd can be prepared after washing and drying. According to the method, excessive use of acid and alkali is avoided, and the precious metal Pd with higher purity can be obtained through recovery on the basis of the simple process and environmental protection.

The invention provides a method for recycling fresh scrapped concrete. The method comprises the following steps: S1, providing the fresh scrapped concrete; S2, determining the dormancy type of the fresh scrapped concrete; S3, carrying out dormancy treatment on the fresh scrapped concrete with the determined dormancy type; S4, awakening the dormancy-treated fresh scrapped concrete; and S5, recycling the awakened fresh scrapped concrete to form recycled concrete. The method for recycling the fresh scrapped concrete adopts different treatment ways for different dormancy types, enhances the control power of the concrete dormancy time, reduces environmental pollution, improves the recycling rate and reduces the construction cost, and the prepared recycled concrete has excellent mechanical properties, workability and durability.

The invention discloses a preparation method of nuclear-grade zirconium alloy return scrap cast ingots. The preparation method comprises the steps that 1, nuclear-grade zirconium alloy return scrap isidentified and classified; 2, pretreatment is conducted on the zirconium alloy return scrap same as nuclear-grade zirconium alloy return scrap cast ingots in mark or containing similar chemical component to the cast ingots; 3, the zirconium alloy return scrap subjected to pretreatment is selected and prepared into a consumable electrode and a zirconium block; 4, vacuum consumable smelting is conducted on the consumable electrode and a zirconium block to obtain the nuclear-grade zirconium alloy return scrap cast ingots. According to the mass content of O and N in the nuclear-grade zirconium alloy return scrap cast ingots, the nuclear-grade zirconium alloy return scrap containing different mass contents of O and N is selected, the mass contents of O and N in the nuclear-grade zirconium alloy return scrap cast ingots are accurately controlled, the nuclear-grade zirconium alloy cast ingots containing components conforming to GB/T13747 zirconium and zirconium alloy chemical analysis methodare obtained, effective recovery of zirconium alloy return scrap is achieved, and the recovery rate of the zirconium alloy return scrap is greatly improved.

The invention discloses a riverway floating object recovery and treatment method. The riverway floating object recovery and treatment method comprises the following steps that a hydraulic cylinder is started, and a jacking rod drives a supporting pillar to move forwards under pushing of the output end of the hydraulic cylinder; a fence body quickly moves up and down in a guide rail groove under the traction of a connection rod, a screw rod is manually adjusted, a movable block can move on the connection rod, a movable block makes a lower raking pawl to open under driving of the connection rod, and the fence body moves downwards into the water; an upper raking pawl blocks floating objects to prevent the floating objects from continuous moving, the screw rod is reversely rotated, and the lower raking pawl automatically moves downwards and is matched with the upper raking pawl so as to hold the floating objects; and finally, the fence body is overall lifted under traction of the connection rod, and the collected floating objects are stacked to a fixed treatment site. When opening and closing of the lower baking pawl are adjusted, one screw rod is adopted to be matched with the movable block; opening and closing of the lower baking pawl can be achieved by forward and reversely rotating the screw rod; and it is obtained by calculation that 17 times power can be saved for adjusting the screw rod, and the work difficulty of opening and closing of lower raking pawl is lowered.

The invention provides a reciprocating type crusher for recycling treatment of construction waste. The reciprocating type crusher comprises a crushing device, an advancing driving device and an automatic retreating device, wherein the crushing device is used for cutting-off and crushing wood bar materials such as bamboo. The crushing device comprises a collection bin, a feeding mechanism, an ascending-and-descending crushing tool and a cutting-off mechanism, wherein the feeding mechanism is arranged at one end of the collection bin; the ascending-and-descending crushing tool is arranged at theother end of the collection bin; and the cutting-off mechanism is arranged at a discharging opening of the feeding mechanism and located above the collection bin. The feeding mechanism is used for clamping the wood bar materials such as the bamboo and delivering the wood bar materials into the upper portion of the collection bin. The cutting-off mechanism is used for conducting cutting-off treatment on the wood bar materials such as the bamboo delivered into the upper portion of the collection bin. The collection bin is used for receiving the wood bar materials such as the bamboo cut off by the cutting-off mechanism. The advancing driving device is used for pushing the cut-off wood bar materials such as the bamboo to move toward the ascending-and-descending crushing tool and crushing thecut-off wood bar materials such as the bamboo. The automatic retreating device is used for controlling the advancing driving device to automatically retreat and rapidly reset.

The invention discloses a waste textile crushing collection device which comprises a crushing box, a feeding mechanism, a crushing mechanism, a screening mechanism and a recycling mechanism, wherein the screening mechanism comprises a winnowing component, a separating component used for separating textiles and a collecting component used for collecting the textiles; the collecting component comprises a collecting pipe, a roots blower communicating with the collecting pipe and a collecting box; one end of the collecting pipe communicates with the crushing box, and the other end of the collecting pipe communicates with the collecting box; a material outlet is formed in one side of the collecting box, and a bottom plate which can form a surface sloping from top to bottom so as to enable materials to slide out of the collecting box is arranged in the collecting box. By the arrangement of the collecting pipe, the collecting box and the roots fan, the waste textile crushing collection devicecan draw the crushed waste textiles in the collecting box, thereby achieving the effect of quick collecting. no additional collection is required by hand in the collecting process, the whole collecting efficiency can be effectively improved, and the working strength of workers is reduced.

The invention provides a storage battery temperature control system and method and a vehicle with the storage battery temperature control system and method. In the control system, a motor cooling pipeline is arranged on a main temperature control pipeline, a storage battery heat preservation pipeline is arranged on a first branch temperature control pipeline, a radiator is arranged on a second branch temperature control pipeline, a third branch temperature control pipeline is a direct current pipeline. The first branch temperature control pipeline, the second branch temperature control pipeline and the third branch temperature control pipeline are connected in parallel, after the three branch temperature control pipelines are connected in parallel, one ends of the three branch temperaturecontrol pipelines are connected with a liquid outlet of the motor cooling pipeline through the first flow control valve, and the other ends of the three branch temperature control pipelines are connected with a liquid inlet of the motor cooling pipeline. The controller controls the first flow control valve according to the temperature information of the motor cooling pipeline and the storage battery and the current information of the storage battery so as to change the percentage of cooling liquid entering the first branch temperature control pipeline, the second branch temperature control pipeline and the third branch temperature control pipeline. The system can better ensure the operation of the storage battery at a low temperature and improve the charging performance of the storage battery in a low-temperature environment.

The invention discloses a method for harmlessly treating and recycling aluminum ash, and belongs to the technical field of comprehensive utilization of waste resources in the aluminum industry. The invention provides a method for harmlessly treating and recycling aluminum ash. The method comprises the following steps of: S1, primary dry grinding for aluminum extraction; S2, secondary dry grinding for aluminum extraction; S3, deamination; S4, wet grinding and sorting; and S5, fluorine fixation treatment. According to the method for harmlessly treating and recycling aluminum ash, components harmful to the environment in the aluminum ash can be extracted or solidified, harm to the environment is reduced and avoided, the recovery rate of effective components in the aluminum ash is high, the recycling range of the aluminum ash is widened, and meanwhile energy consumption is reduced.

The invention discloses a multi-section acceleration large marine organism fishing protection electronic harpoon. The multi-section acceleration large marine organism fishing protection electronic harpoon comprises a harpoon base and a harpoon mounting mechanism, an outer side harpoon frame is fixedly connected to the outer side of the bottom of the harpoon base through a connecting frame, a puncture plug is fixedly connected to the middle of the bottom of the harpoon base, and a rear side harpoon rod base is fixedly connected to the top of the harpoon base. The side edge of the rear side harpoon rod base is fixedly connected with a rear puncture needle, and the top of the rear side harpoon rod base is fixedly connected with a harpoon rod handle. The invention relates to the technical field of fishing protection. The multi-section acceleration large marine organism fishing protection electronic harpoon can be selected as a fishing harpoon, marine organisms of different sizes can be fished by replacing different accessories and ropes and changing the power of an electromagnetic acceleration coil, and when large marine organisms are used for self-defense protection, the harpoon can be directly jetted out; and without consideration of recovery, a plurality of single harpoon bodies can be arranged on a ship for protection.

The invention discloses a die for the production of three-row-hole recycled concrete, comprising an upper die and a lower die, wherein the lower die is internally provided with three identical die cores between every two of which a partition is arranged, the partitions lead each die core to be independent from each other, three rows of hole dies are uniformly arranged in each die core, every row of the hole dies are serially connected through rods and fixed at the inner wall of the lower die through the rods, pores between the hole dies and the inner wall of the lower die and gaps between the hole dies and the partitions of the mould cores are used for forming walls of a building block, gap between every two of the hole dies is used for forming ribs of the building block. An upper end horizontal plate is arranged around the upper end of the lower die, a lower end horizontal plate is arranged around the lower end of the lower die, the lower end horizontal plate is used for fixing the lower die on a vibrating platform of a block machine, a vertical plate is arranged above three sides of the upper end horizontal plate, a plurality of supporting plates are arranged between the lower end horizontal plate and the upper end horizontal plate, and the supporting plates are vertical to an upper end horizontal plane and a lower end horizontal plane. The die greatly improves the intensity grade of the recycled concrete-made building block and expands the applicable scope of the recycled construction wastes.

The invention relates to a method for extracting and recycling hemicellulose from squeezed alkali waste, belongs to the field of chemical fiber preparation industry, and in particular relates to the field of squeezed alkali waste treatment in the adhesive fiber production and preparation process. According to the method, the hemicellulose in the squeezed alkali waste is recycled through steps of neutralization, sedimentation, filtration and drying; the pH value ranging from 2.5 to 4.5 is adopted as a final neutralization point, and beta-cellulose with a high polymerization degree can be directly separated out so that the hemicellulose with the high polymerization degree is obtained; the finished product, namely, the cellulose, comprises the following ingredients: greater than or equal to 95% of hemicellulose (absolutely dry), and less than or equal to 0.5% of ash content; the hemicellulose can be directly sold or is developed and used as a synthetic raw material for the next step.