22results about How to "Good harvesting effect" patented technology

The invention relates to the technical field of mineral processing, and provides a process for recovering phosphorus from vanadium titano-magnetite tailings, which comprises the following steps: S1, magnetic separation: carrying out ore grinding treatment and low intensity magnetic separation tailing discarding treatment on the vanadium titano-magnetite tailings to obtain magnetic minerals and non-magnetic minerals for later use; s2, pulp mixing is conducted, specifically, water is added into non-magnetic minerals, stirring is conducted, and ore pulp is obtained for standby application; a sodium carbonate aqueous solution is added into the ore pulp, stirring is carried out, a gangue inhibitor and water are added, stirring is carried out, a collecting agent and water are added, stirring and foam scraping are carried out, roughed concentrate and scavenging feed ore are obtained for standby application, and the gangue inhibitor is a mixture of modified water glass and sodium hexametaphosphate with the mass ratio being 1: (0.3-0.6); and S4, concentration is conducted, specifically, primary concentration, secondary concentration and third concentration are conducted on the roughed concentrate, and final phosphate concentrate is obtained. The process for recycling phosphorus from the vanadium titano-magnetite tailings has the advantages that the flotation reagent dosage is low, and the obtained phosphorus concentrate has the high phosphorus grade.

The invention belongs to the field of phosphorite flotation, and particularly relates to a reagent and a method for removing potassium feldspar in collophanite and reducing the potassium content through step-by-step flotation, the removal of the potassium feldspar in the collophanite is realized through two-stage ore grinding and fine column machine-combined step-by-step flotation, namely, for fine-fraction mineral particles, firstly, a dispersing agent is adopted for fully dispersing the mineral particles, and then the fine-fraction mineral particles are added into the dispersing agent; then a collecting agent with high selectivity is added, meanwhile, a filling type microbubble countercurrent contact type flotation column is adopted to reduce the bubble size, the collision probability of the micro-fine-particle potassium feldspar and the bubbles is increased, and efficient flotation of the micro-fine-particle potassium feldspar is achieved; the foam phenomenon deterioration caused by excessive grinding is avoided through second-stage ore grinding; for roughing concentrate pulp, an improved compound collecting agent is added, the flotation froth stability is improved, and the collecting performance is enhanced; the ultrasonic device is additionally arranged, foam can be efficiently crushed, ore pulp transfer is facilitated, potassium feldspar in collophanite can be fully removed, the flotation process is stable, simple and convenient, and phosphorite resources are efficiently recycled.

The present invention relates to the technical field of microalgae biological solid-liquid separation, in particular to a method for predicting and optimizing the recovery efficiency of microalgae bead flotation based on machine learning. Different machine learning algorithms are introduced, and the multidimensional microalgae bead flotation data packets after screening are trained, calculated and screened based on different machine learning algorithms to obtain a trained ideal recovery efficiency prediction model; the established input features are predicted by the trained ideal recovery efficiency prediction model to obtain a predetermined recovery efficiency value, and the established recovery efficiency value is calculated using the SHAP library to determine the degree of influence of each established bead property and established operating conditions on the established recovery efficiency; the optimal bead flotation recovery conditions screened are arranged in descending order based on the degree of influence to enrich the data set of microalgae bead flotation, and the ideal recovery efficiency prediction model is optimized. The present invention can realize accurate prediction of the recovery efficiency of the microalgae bead flotation process based on the machine learning method, and significantly improve the recovery performance of the microalgae bead flotation.

This invention discloses a method for preparing a composite flotation reagent using biomass hydrothermal liquefaction products, comprising the following steps: Raw material preparation: providing biomass raw materials rich in lipids or proteins; Catalytic hydrothermal liquefaction: placing the biomass raw materials and a composite catalyst in a reactor, reacting at a temperature of 250-350℃ and a pressure of 4-20 MPa, wherein the water content of the biomass raw materials is 70-95%, and the composite catalyst contains alkaline components, metal oxide components, and rare earth element components; Product separation: separating the reaction products into oil and water to obtain bio-crude oil containing amphiphilic molecules; Flotation application: applying the bio-crude oil as a composite flotation reagent to mineral flotation, where the bio-crude oil simultaneously functions as a frother and a collector. This invention uses waste biomass as raw material to prepare a composite flotation reagent with both frother and collector functions, realizing the resource utilization of waste and the green upgrading of flotation reagents, and has the characteristics of wide raw material sources, excellent reagent performance, and environmental friendliness.

This application discloses a rubber reeling chain device and a corn harvester, belonging to the field of agricultural machinery technology. It includes a reeling chain body, a pusher plate, a limiting component, and a reeling chain core. The reeling chain body has a ring-shaped structure, with pushers spaced apart on the outer side of the reeling chain body. Both the reeling chain body and the pushers are made of rubber. The limiting component is located on the inner side of the reeling chain body and is used to install and limit the reeling chain core. The reeling chain cores are arranged along the inner side of the reeling chain body, forming a limiting cavity between adjacent reeling chain cores. The reeling chain body is used to engage with the teeth of an external sprocket through the limiting cavity and thus wrap around the sprocket. The pusher plate is driven by the reeling chain body to push the material. The reeling chain body and pusher plate are made of rubber, and the reeling chain cores are arranged and installed on the inner side of the reeling chain body through the limiting component, facilitating the engagement of the reeling chain cores with the teeth of the external sprocket and making it easier to replace a metal chain.

The invention discloses a hydroximic acid-quaternary ammonium salt ionic liquid collecting agent and a preparation method and application thereof. The structural formula of the hydroximic acid-quaternary ammonium salt ionic liquid collecting agent is as shown in the formula (I): # imgabs0 # (I). Compared with a traditional salicylhydroxamic acid collecting agent, the hydroxamic acid-quaternary ammonium salt ionic liquid collecting agent has good collecting performance and selectivity on rare earth ore, a good collecting effect can still be achieved under the condition that a foaming agent is not added, and the hydroxamic acid-quaternary ammonium salt ionic liquid collecting agent has wide application prospects.

The utility model discloses a leaf vegetable harvesting trolley, which relates to the technical field of agricultural harvesters and comprises an advancing mechanism, a conveying mechanism, a cutting mechanism, a seedling pulling mechanism and a collecting mechanism. Wherein two mounting vertical plates which are symmetrically arranged are fixed to the advancing mechanism, the conveying mechanism is mounted between the two mounting vertical plates, the conveying mechanism is obliquely arranged, the cutting mechanism and the seedling pulling mechanism are both mounted on the two mounting vertical plates, the cutting mechanism and the seedling pulling mechanism are both located on one side of the lower end of the conveying mechanism, and the cutting mechanism and the seedling pulling mechanism are located on the other side of the lower end of the conveying mechanism. The collecting mechanism is arranged on one side of the high end of the conveying mechanism, the cutting mechanism cuts leafy vegetables, the seedling pulling mechanism pulls the cut leafy vegetables to the transmission mechanism, and the transmission mechanism conveys the leafy vegetables into the collecting mechanism to be stored. The double-blade cutting knife is adopted in the cutting part, the cutting effectiveness and the stability of the cutting device can be improved through reciprocating cutting of the double blades, and the harvesting efficiency and quality are improved from the source.

This utility model discloses a cumin harvester, relating to the field of cumin harvesting technology. It includes a tractor body and a mounting plate at the rear end of the tractor body. A material collection frame is provided on the outer side of the mounting plate, and a hydraulic push rod for driving the material collection frame to discharge material is provided between the mounting plate and the material collection frame. An inclined conveyor belt is provided between the tractor body and the mounting plate. In this cumin harvester, a triangular material collection component can initially collect the cut cumin, allowing it to enter the subsequent conveying process more concentratedly. Support wheels prevent the cutting table assembly from directly contacting the ground. By setting a front hydraulic lifting rod and a rear hydraulic lifting rod at the front end of the mounting frame, the height of the cutting table assembly can be flexibly adjusted. When harvesting cumin intercropped with cotton, the lifting and lowering of the cutting table assembly can be precisely controlled according to the actual position of the cotton and drip irrigation tape, effectively avoiding damage to the cotton or drip irrigation tape and greatly improving the practicality of the harvester.

The invention discloses a harvesting method based on efficient vibration falling of forest fruits, which comprises the following steps: an unmanned aerial vehicle parked on a vehicle body starts to work, the unmanned aerial vehicle performs aerial photography on an orchard according to a preset path, and the outer contour shape of a top view of a crown of each tree is determined; the unmanned aerial vehicle sends the outer contour shape of the crown top view of the corresponding tree number to the console in a data packaging form; the console judges the orientation of the short axis of each crown top view outer contour line according to the shape of the crown top view outer contour; the vehicle body walks according to a preset path, clamping vibration harvesting operation is conducted on each tree in the path through the clamping vibration device in the walking process, and when the tree trunks are clamped, it needs to be guaranteed that the clamping direction is parallel to the direction where the short axis of the outer contour line of the top view of a tree crown is located. The problems that in the prior art, a traditional picking method is high in requirement for labor force, low in picking efficiency and low in picking net rate, trees are damaged, and the yield of the next year is affected are solved.

The utility model discloses a submerged plant harvesting device applied to water treatment, which relates to the technical field of mechanical devices and comprises a mounting plate. Two supporting side plates are fixed to the top of the mounting plate, and a rotating shaft is rotationally matched between the two supporting side plates. Two connecting side plates are fixed between the two supporting side plates on the peripheral side surface of the rotating shaft, connecting plates are fixed at one ends of the two connecting side plates, and U-shaped harvesting cutters are fixedly mounted at one ends of the two connecting plates. Harvest submerged plants are conveyed to the side away from the U-shaped harvesting cutter, pollution to a water body caused by rotting of the harvested submerged plants is avoided, transmission power does not need to be provided for the device, and through a triangular structure formed by three points of the limiting shaft, the driven transmission shaft and the rotating shaft, the submerged plants can be harvested more accurately. The transmission shaft rotates by taking the rotating shaft as the center, so that the harvesting depth of the device is adjusted, the device can adapt to the harvesting of aquatic plants with different depths, and the harvesting effect of the device is improved.

A three-edged efficient leaf scraper comprises a first shaft body, a second shaft body, a first single tool a, a first single tool b, a first single tool c, a second single tool a, a second single tool b and a second single tool c. The first shaft body and the second shaft body are parallel and arranged side by side, the first single tool a, the first single tool b and the first single tool c are arranged on the first shaft body in a clockwise distribution mode, and the second single tool a, the second single tool b and the second single tool c are arranged on the second shaft body in an anticlockwise distribution mode; the sides, away from the first shaft body and the second shaft body, of the first single tool a and the second single tool a are straight lines, the sides, away from the first shaft body, of the first single tool b and the first single tool c are curves, and the sides, away from the second shaft body, of the second single tool b and the second single tool c are curves. The leaf scraping knife adopts a combined structure, is convenient to disassemble and assemble, can comprehensively and stably harvest tobacco leaves, avoids missing harvesting loss, cannot damage tobacco stems and tobacco leaves, and is high in harvesting effect.

The invention discloses a lawn harvester for building gardens, which belongs to the technical field of lawn harvesters, and mainly comprises a main body frame, a side cutting mechanism, a floating support angle adjusting mechanism, a universal wheel mechanism, a distance adjusting mechanism and a cutting mechanism, the floating supporting angle adjusting mechanism comprises a limiting ball cover, a limiting ball block and a rotating shaft rod fixed to the bottom end of the limiting ball block, a cutting disc is fixed to the bottom end of the rotating shaft rod, the cutting mechanism is installed in the middle of the bottom end of the cutting disc, and the side cutting mechanism is installed at the bottom end of one side of the main body frame. By means of the floating supporting angle adjusting mechanism and the cutting mechanism, the angle of the cutting disc can be conveniently adjusted in a self-adaptive mode according to fluctuation of the slope of the lawn of the building garden, so that uniform cutting of the slope lawn is achieved, harvesting can be conveniently conducted on long and narrow gaps through the side cutting mechanism, cutting missing can be prevented during mowing, and the mowing efficiency is improved. And the lawn harvesting effect can be improved.

The invention discloses a cotton stalk pulling and harvesting machine, which relates to the technical field of agricultural machinery, and comprises a pair of side plates, a fixed roller is arranged between the opposite front ends of the pair of side plates, a concentrically arranged hollow cylinder is sleeved on the fixed roller, an active roller is arranged between the opposite rear ends of the pair of side plates, and the active roller is synchronously rotated and connected with the hollow cylinder through a driving assembly; a rectangular slide is inserted into the outer surface of the hollow cylinder, a pair of hinged plates are arranged on both sides of the outer end of the rectangular slide, and the inner ends of a plurality of rectangular slides are connected with the fixed roller through a limiting assembly; a first roller is arranged above the active roller, a second roller is arranged in the middle and lower part of the pair of side plates, and the active roller, the first roller and the second roller are synchronously rotated and connected through a conveying assembly. The invention not only facilitates and enhances the firmness of cotton stalk clamping during cotton stalk pulling, but also improves the working efficiency of cotton stalk pulling, and facilitates the harvesting of cotton stalks after stalk pulling.

The invention belongs to the field of flotation, and particularly relates to a combined collecting agent, a flotation reagent and a flotation method for scheelite flotation. The combined collecting agent comprises a component A and a component B, the component A comprises a compound # imgabs 0 # with a structure shown in a formula 1; the component B comprises a compound with a structure shown in a formula 2 # imgabs 1 #; in the combined collecting agent, the weight content of the component A is larger than or equal to 40%. According to the method, the scheelite concentrate with the high WO3 grade can be obtained through one-time concentration, the WO3 enrichment ratio exceeds 10, and the flotation recovery rate is high. The combined collecting agent is simple in component and environmentally friendly, the loss rate of scheelite in flotation tailings is low, and efficient flotation of the scheelite and flotation separation between the scheelite and calcium-containing gangue minerals can be achieved.

This invention relates to a range-extended, all-electric, lightweight lotus root harvesting equipment. The technical solution is as follows: a buoyancy lifting chassis is composed of an electric drive walking module, a frame assembly, a buoyancy box, and a four-point linkage lifting mechanism; a low-pressure, high-flow-rate oscillating jet module, consisting of a jet module and a submersible pump suction module, is mounted on the buoyancy box to provide jet power for the entire machine; the diesel engine of the power generation module drives a generator to output three-phase AC power, which is then converted into DC power by a rectifier to charge the battery module; the battery module's power is converted by an inverter to power multiple submersible pumps, an underwater motor, a lifting platform, and a through-type stepper motor. The beneficial effects are: firstly, the oscillating floating jet mechanism improves harvesting efficiency; secondly, the diesel engine generates electricity to achieve energy storage and range extension, while the underwater motor's high-proportion reducer drives the rubber tracks; simultaneously, the electric drive enables multiple submersible pumps to work together, leveraging their high efficiency and head.

The present application relates to the technical field of ore flotation, and specifically discloses a collector and a preparation method thereof, and a method for flotation of fluorite using the collector. The collector is prepared from the following raw materials: oleic acid and triethanolamine; the volume ratio of oleic acid and triethanolamine is (1.7-2.3): 1; the concentration of oleic acid is 7-12%; the concentration of triethanolamine is 8-13%. The preparation method of the collector is: under stirring, triethanolamine is slowly poured into oleic acid, reacted at room temperature, and a modified oleic acid solution is obtained, which is the collector. The collector prepared in the present application has fine foam after foaming, strong collecting ability, and still has a good collecting effect at low temperature (0-5°C). The collector or the collector prepared by the preparation method is applied to fluorite flotation, and the flotation effect of fine-grained fluorite is good.

The utility model discloses a green feed harvester chopping roller which comprises a chopping roller shaft, two fixed amplitude discs are symmetrically arranged at the two ends of the outer side face of the chopping roller shaft, a chopping knife is fixed to one side of each fixed amplitude disc, the chopping knives are obliquely arranged, the chopping knives on the two fixed amplitude discs are distributed in a herringbone staggered mode, and the chopping knives on the two fixed amplitude discs are arranged in a staggered mode. According to the chopping cylinder of the green feed harvester, crops can be gathered and fall on a conveying mechanism when being cut, the crops are prevented from scattering and flying out, collection is convenient, the use performance of the harvester is improved, and meanwhile the labor burden of farmers is relieved.

The invention relates to the technical field of microalgae biological solid-liquid separation, in particular to a microalgae floating bead flotation harvesting efficiency prediction and optimization method based on machine learning. Different machine learning algorithms are introduced, the screened multi-dimensional microalgae floating bead flotation data packets are trained, calculated and screened based on the different machine learning algorithms, and a trained ideal harvesting efficiency prediction model is obtained; predicting the established input characteristics through the trained ideal harvesting efficiency prediction model to obtain an established harvesting efficiency value, and calculating the established harvesting efficiency value by using an SHAP library to determine the influence degree of each established floating bead property and an established operation condition on the established harvesting efficiency; enriching a microalgae floating bead flotation data set according to the optimal floating bead flotation harvesting condition screened based on the influence degree descending order, and optimizing an ideal harvesting efficiency prediction model. According to the method, the harvesting efficiency in the microalgae floating bead flotation process can be accurately predicted on the basis of a machine learning method, and the microalgae floating bead flotation harvesting performance is remarkably improved.

A device for artificially harvesting stem tips comprises an index finger ring and a thumb ring for use in combination, wherein the index finger ring comprises an index finger ring body and a V-shaped knife groove arranged on the outer surface of the index finger ring body, the direction of the V-shaped knife groove is parallel to the central axis of the index finger ring body; the thumb ring comprises a thumb finger ring body and a ridge-shaped knife body arranged on the outer surface of the thumb finger ring body, the direction of the ridge-shaped knife body and its top cutting edge are perpendicular to the central axis of the thumb finger ring body; the index finger ring body and the thumb finger ring body are both connected by a three-layer structure of a wear-resistant outer ring, a plastic middle ring and a flexible inner ring, the V-shaped knife groove and the ridge-shaped knife body are both fixedly connected to the wear-resistant outer ring, the shapes of the two are matched, and the overall length of the V-shaped knife groove is greater than or equal to the length of the ridge-shaped knife body. The invention is designed with reasonable structure in view of the characteristics of stems and leaves, has fast cutting effect, and high harvesting efficiency.

The invention provides a radish harvesting robot, which comprises an upper rack, a lower rack, a controller, a walking mechanism, a dredging mechanism, a pulling mechanism, a transmission mechanism and a leaf cutting mechanism, and is characterized in that the upper rack is fixedly connected with the lower rack; the controller is used for controlling the robot to automatically walk among radish rows and simultaneously carrying out coordination control on each working part; the walking mechanism is used for providing driving force and support needed by walking of the radish harvesting robot. The dredging mechanism is used for dredging the radishes and correcting the postures of the radishes, and the pulling mechanism pulls the radishes after the postures are corrected; the conveying mechanism conveys the pulled radishes; and the leaf cutting mechanism cuts off the radish leaves conveyed to the leaf cutting mechanism. According to the radish pulling device, the pulling position of radishes can be sensed in real time, the posture of the pulling mechanism can be automatically adjusted, the direction of radish rows can be automatically followed, the radish recognition accuracy and the pulling efficiency are improved, and redundant covering films can be removed.

The application discloses a hydroxamic acid-quaternary ammonium salt ionic liquid collector and a preparation method and application thereof. The structural formula of the hydroxamic acid-quaternary ammonium salt ionic liquid collector is shown as formula (I): (I). The hydroxamic acid-quaternary ammonium salt ionic liquid collector has good collecting property and selectivity to rare earth ores compared with traditional salicylhydroxamic acid collectors, and can still achieve good collecting effect without adding a foaming agent, and has a wide application prospect.

This invention belongs to the field of metallurgical solid waste resource utilization technology, specifically disclosing a method for the comprehensive recovery of copper and iron from copper slag flotation tailings. The method involves magnetic roughing and magnetic scavenging of the copper slag flotation tailings, merging them to obtain a mixed magnetic concentrate; the mixed magnetic concentrate is regrinded to a final density of -0.038 mm (80%–95%); the regrinded product enters the flotation system, using a combination of dimethyl sulfoxide and dispersant red at a mass ratio of 1:6–8 as collectors, and undergoes two roughing, two cleaning, and two scavenging processes to obtain copper concentrate; the copper-removed tailings from the flotation process undergo two roughing and three cleaning magnetic separations to obtain iron concentrate; the middlings from the three cleaning stages are combined with the magnetic scavenging tailings to form the final tailings. This invention processes copper slag flotation tailings with a copper grade of 0.22%–0.31% and an iron grade of 40%–45%, yielding copper concentrate with a copper grade of 6.8%–8.1% and a recovery rate of 43%–48%, and iron concentrate with an iron grade of 54%–60% and a recovery rate of 69%–79%. This invention eliminates the need for roasting, achieves co-recovery of copper and iron, and features a compact process, strong reagent selectivity, and stable performance indicators.