215results about How to "Good harvesting effect" patented technology

The invention discloses an environmentally-friendly amine cationic collector and a using method thereof. The collector ZJ is ester group-containing quaternary ammonium salt cationic surfactant and has a plurality of alkyl groups, wherein an R alkyl group has 6 to 18 carbon atoms; an R1 alkyl group has 1 to 4 carbon atoms; the number of ester groups is 1 or two; and the number of the quaternary ammonium group is 1. The collector is obtained by esterification and quaternarization. As a hydrophobic chain has a carbonyl structure, the collector can hydrolyze easily into nonsurfactant fragments, and is a surfactant with high biodegradability, small toxicity and high performance. The collector is used in ore flotation for the first time and demonstrates high collecting capacity and selectivity.The collector forms fine and fragile foam that is low temperature resistant. The collector can be used under the condition that the pH value of ore pulp is 7 without corroding equipment. The preparation process of the collector is simple and easy in operation. And the collector is easy to biodegrade and is environmentally-friendly.

Disclosed are a composite floatation collector and a preparation method thereof. The composite floatation collector is composed of phthalate, hydrocarbon type oil and high-carbon oxygen-containing organic compound according to the mass ratio of 2-10:10:2-10. The composite floatation collector has the advantages of fine low-temperature liquidity, fast bubbling, long duration of bubbling, fine dispersibility in pulp, high collecting capacity to coarse-grade mineral or ultrafine-grade mineral and the like, and is used for recovering molybdenum from molybdenum ore and copper-molybdenum ore and recovering coal from coal ore by means of floatation efficiently.

The present invention relates to a reaping apparatus and a reaping method for continuously reaping whole plants of green vegetables. The reaping apparatus comprises a machine frame, a crop divider, a ripper, a clamping, pulling and reversing apparatus, a root cutting apparatus, a transport apparatus, a lifting apparatus, and a walking apparatus. The crop divider is used for dividing and lifting green vegetables in a harvest area; the ripper is used for ripping a soil at roots of the green vegetables that are gathered together by the crop divider; the clamping, pulling and reversing apparatus is used for clamping and pulling the green vegetables that are gathered together, and reversing the green vegetables during a clamping and conveying process; the root cutting apparatus is used for stably and regularly cutting roots of the green vegetables during a clamping and delivering process; the transport apparatus is used for transporting the green vegetables that are pulled out; the lifting apparatus is used for supporting the clamping, pulling and reversing apparatus, and adjusting a height of the clamping, pulling and reversing apparatus from the ground; and the walking apparatus is used for driving the machine frame to walk in the harvest area. According to the reaping apparatus and reaping method provided by the present invention, a pulling method with flexible belts parallel processing is adopted to continuously reap the whole plants of green vegetables; a flexible material is adopted to avoid damage to stems or leaves; and adaptability to vegetable harvest is good.

The invention discloses an ore dressing collector and a preparation method thereof. The ore dressing collector consists of the following raw materials in percentage by weight: 75 to 80 percent of oleic acid, 3 to 5 percent of surfactant, 5 to 7 percent of N,N-dimethylformamide-dimethyl sulfate, and 10 to 15 percent of chloride. The oleic acid is subjected to electrolytic dissociation and chemicalmodification by the steps of activation, electrolyzation, separation and introduction of an active group so as to form the ore dressing collector with high activity, dispersibility and selectivity. The ore dressing collector is particularly suitable for ore dressing of minerals such as non-metallic fluorite, kyanite, barite, metal white tungsten, hematite reverse flotation and the like, particularly the ore dressing at low temperature (more than or equal to 2 DEG C).

The invention discloses a composite coal-dressing flotation reagent and a preparation method of the composite coal-dressing flotation reagent. The composite coal-dressing flotation reagent is an ivory water-soluble composite coal-dressing flotation reagent which is formed in the mode that light diesel oil, lauryl sodium sulfate, alkyl glycoside, alkylphenol polyoxyethylene ether and water are mixed and subjected to emulsification treatment through a low-temperature emulsification technology. The preparation method of the composite coal-dressing flotation reagent is simple, sources of raw materials are wide, complex operation is avoided, and industrialization can be easily achieved. The composite coal-dressing flotation reagent is used for conducting flotation processing on fine-grained coal slime; compared with a single flotation reagent combination composed of alkyl glycoside and light diesel oil which are added step by step, the composite coal-dressing flotation reagent shows an enhanced coal-dressing flotation effect on fine coal with the granularity smaller than 0.5 mm and overcomes the defect that the reagent is added step by step, the dosage of the reagent is reduced, and the economic benefit is considerable.

Disclosed are a composite collector for low-and-medium-temperature phosphate flotation and a preparation method thereof. The composite collector is composed of 100 parts of carboxylic acid collector, 50-100 parts of hydrocarbon type oil, 1-10 parts of non-ionic surface active agent, 1-10 parts of anionic surface active agent and 80-200 parts of water, wherein the carboxylic acid collector serves as the main collector, the hydrocarbon type oil serves as the auxiliary collector, the non-ionic surface active agent serves as the synergist, and the anionic surface active agent serves as the emulsifier. The preparation method includes steps of uniformly mixing and stirring the components according to the proportion in the speed of 300-1500rad/min at the temperature ranging from 40DEG C to 80 DEG C to obtain the composite collector for low-and-medium temperature phosphate flotation. When in use of the composite collector, the composite collector is added into a pulp mixing barrel to be mixed with pulp sufficiently according to dosage directly, so that floatation can be carried out in a floatation trough at the normal temperature and the operation of heating to pulp is omitted. The composite collector has the advantages that better low-and-medium-temperature flotation effect can be achieved, bubbles generated by the composite collector are favorable for concentrate deposition, the chemical agent usage is small, raw materials for the composite collector are wide in sources, and the composite collector is moderate in price.

The invention discloses a xanthic acid acyl ester collecting agent and preparation and application methods thereof. The preparation method comprises the steps that alkyl xanthogenate and acyl chloride are taken as raw materials and react for 1-4 h under a reaction temperature 10-50 DEG C to generate xanthic acid acyl ester. According to the preparation method, the reaction operation is simple, no waste water is generated, and the product yield coefficient is high; a xanthic acid acyl ester collecting agent has stronger collecting capacity and selectivity for sulphide ores such as copper sulphide ores, lead zinc ores and copper molybdenum ores precious metal ores as well as associated gold and silver precious metal ores, and better flotation indexes are obtained in the flotation test process.

An automatic aligning device comprises a control system, a hydraulic device and a displacement detection device, wherein the control system and the hydraulic device are arranged on a fixing rack at the rear end of a harvest machine, the control system is connected with a harvest frame through a hydraulic cylinder, and an evacuation device and a grain lifter are arranged at the front end of the harvest frame; the displacement detection device is arranged on the grain lifter; and the displacement detection device comprises a swing rod and an angular displacement sensor, and the swing rod is connected with a singlechip used as the control system through the angular displacement sensor. The swinging angle theta of the swing rod is less than or equal to 60 degrees. The displacement detection device consisting of the swing rod and the angular displacement sensor is additionally arranged on the grain lifter and is matched with the control system to control the leftward and rightward movement of the harvest frame, so that the evacuation device can be automatically aligned; and compared with manual regulation, the automatic aligning device is more flexible, the technical requirements on an operator are lowered, and the mechanical damage rate and the fruit loss rate of crops are reduced.

The invention discloses a method and device for automatically washing picked porphyra yezoensis shoots. The device for automatically washing the picked porphyra yezoensis shoots comprises a submerged pump and a water inlet pipe. The water inlet pipe is shaped like a Chinese character 'hui'. One end of the water inlet pipe is connected with the submerged pump and the other end of the water inlet pipe is provided with three arm type rotary nozzles. The interval of the nozzles arranged on the same line ranges from 1.5 m to 4 m. Two rows of parallel nozzles are arranged in a staggered mode. The spraying range of the nozzles is a circle with the radius ranging from 1 m to 2 m. Each nozzle is composed of a hollow shaft core and three arm type water outlet pipes. The hollow shaft cores are connected with the water inlet pipe. Water outlets are evenly formed in the arm type water outlet pipes. After stimulation of the day and night temperature difference and the running water stimulation, conchospores are diffused by shell protonemata in a concentrated mode in the morning of a next day, high-density conchospore water in a nursery pond is pumped to the water inlet pipe through the submerged pump and sprayed to a shoot picking net curtain through the three arm type rotary nozzles, and therefore a whole nursery system is washed synchronously and evenly. The device is simple in structure and operation, quite low in constructive cost, low in use cost and better in shoot picking effect.

The invention provides a method for beneficiation of micro-fine particle graphite ores to obtain high-carbon graphite. According to the invention, with cooperation of creative and efficient reagent system and economical and environment-friendly beneficiation processes including crushing, grinding, flotation and regrinding, high-carbon graphite concentrate with fixed carbon content of over 95% is selected from micro-fine particle graphite ores with low content and difficulty in treatment, thus solving the difficulty that the high-carbon graphite concentrate cannot be economically and efficiently produced by adopting micro-fine particle graphite resources.

The invention discloses a portable single carthamus tinctorius harvesting machine which comprises a cutting harvesting mechanism and a pneumatic conveying mechanism, wherein the cutting harvesting mechanism is used for cutting filaments of wet carthamus tinctorius from roots of the filaments, and the pneumatic conveying mechanism is in matched connection with the cutting harvesting mechanism and is used for utilizing negative pressure to convey and collect the obtained filaments. The portable single carthamus tinctorius harvesting machine can overcome the shortcomings that damage is easily caused to the human body, the harvesting effect is poor and harvesting efficiency is low and the like in the prior art, and has the advantages of avoiding causing damage to the human body and being good in harvesting effect and harvesting efficiency.

The invention discloses a preparation method of high grade copper oxide concentrate. The preparation method sequentially comprises complex copper oxide crude ore grinding, copper sulphide flotation and copper oxide flotation. The copper oxide flotation comprises rough flotation and fine flotation, wherein the rough flotation includes that flotation reagents are added into tailings of copper sulphide flotation after the copper sulphide flotation, and rough concentrate and rougher tailings are obtained after mixing, stirring and separating. The fine flotation includes that gangue mineral depressants are added into the rough concentrate to be stirred, and the gangue mineral depressants are halogenate ethyl sodium sulfonate. According to the preparation method, in the fine flotation process, the halogenate ethyl sodium sulfonate is added to serve as the depressants, impurity gangue minerals are water loving, and therefore the separating effect of target minerals and the impurity gangue minerals is improved in the fine flotation process. The method drastically reduces contents of silica, calcium oxide, magnesium oxide and other impurity gangue minerals, and obtains the high grade copper oxide concentrate. The mineral processing process is low in cost, and simple and feasible in operation.

The invention relates to a machine for harvesting corn, peeling corn husks and separating straws. The machine comprises a vehicle body, a corn header, a corncob elevator, a stem conveying device, a straw, a husk and pulp separation device and a corn storage bunker, and is characterized by further comprising a corn husker, wherein the corncob elevator comprises a first corncob elevator and a second corncob elevator, the first corncob elevator is connected with a corncob picking header and the corn husker, and the second corncob elevator is connected with the corn husker and the corn storage bunker. The invention further relates to a working method of the machine for harvesting corn, peeling corn husks and separating straws. According to the machine for harvesting corn, peeling corn husks and separating straws, and the working method of the machine, an elevating mechanism of a corn harvester is improved, the corn husker is added, and a mounting structure of a traditional corn husker is improved, so that the harvested corn can be further processed after separated from the straws, then the harvested corn is put in storage, and the labor intensity during field operation in the corn picking period is greatly reduced.

The invention discloses a beneficiation method for treating copper smelting slag to solve the problem of incapability of obtaining higher recovery rate under the condition of guaranteeing the concentrate grade in traditional flotation. The method adopts segmented flotation of copper ores contained in copper slag, that is, the quick flotation of part easy-floating copper ores is firstly performed; and then, the floatation is performed for difficult-floating copper ores. The copper smelting slag, namely raw ores are grinded to a certain fineness; the copper ores are collected through adding a copper smelting slag collection foaming agent; and the combined collection foaming agent is n-butyl xanthic acid, ammonium dibutyl dithiophosphate, lignocaine dithio formic acid cyanoethyl and terpenic oil. The beneficiation method is simple in process, and is easy to be managed and operated in scene; and the process can obtain higher economic and technical indexes. The used medicament is environment-friendly; and finally obtained copper concentrates are higher in grade and recovery rate.

Copper oxide and copper sulfide ore flotation agent is made with, by weight, 15-19 parts of gutter oil, 3-5 parts of silica sol, 5-7 parts of sodium naphthenate, 4-5 parts of urea, 2-3 parts of sodium carbonate, 5-7 parts of chitosan, 6-9 parts of mimosa extract, 3-4 parts of sodium metabisulfite, 2-4 parts of fatty alcohol-polyoxyethylene ether, 20-25 parts of black powder, and 4-5 parts of activator. The floatation agent with the gutter oil remains foamy, and the cost is reduced; through the use of the chitosan and silica sol, flocculation is effective and yield is increased; the flotation agent is capable of well collecting copper, copper yield is high, the flotation agent is well selective, has good inhibitory action against other ores, and copper grade is high. The activator contains the components such as jade nanopowder, is capable of stably dispersing and has good permeability and activity, the activation effect lasts long, and the yield and grade of copper is increased. The flotation agent is low in environmental pollution.

The invention provides a composite collecting agent for sulphide ore and a preparing method thereof. The composite collecting agent comprises 10-15% of dialkyl monothiophosphate, 15-30% of alkyl monothioformate, 15-40% of dialkyl dithiophosphate, 5-10% of cosolvent, 13-15% of dialkyl dithiocarbamate and 10-20% of water. The composite collecting agent has the advantages that in use, the usage amount is small, cost is low, and the agents are added conveniently; the recovery indexes of metallic copper, gold, silver and the like are improved well; the composite collecting agent has composite action, collecting performance and foaming characteristic in the flotation process, also has the good selectivity and a superior collecting function for useful metal in clay-contained minerals, and can comprehensively recycle the useful metal minerals from complex minerals.

The invention discloses a crawler-travelling whole-stalk clamping type sugarcane harvester comprising a harvester body and a harvesting mechanism. The harvesting mechanism comprises sugarcane lifters, a clamping device, a cutter device, a sugarcane tip cutting device, a primary feeder, a secondary feeder, a passage device and a fan device, wherein the clamping device comprises a left rail assembly and a right rail assembly, the cutter device is mounted at the front ends of lower rails, the sugarcane lifters are mounted at the front ends of upper rails, the sugarcane tip cutting device is positioned at the tail ends of the upper rails, the primary feeder is positioned between the upper rails and the lower rails, the secondary feeder is positioned at an inlet of the passage device, and the fan device is arranged above an outlet of the passage device. The crawler-travelling whole-stalk clamping type sugarcane harvester is capable of clamping sugarcanes sequentially to avoid clamping stagnation and enhancing detrashing and tailing effects to enable the sugarcanes to be harvested more completely.

The invention discloses a full-feeding type oilseed rape combine harvester. The full-feeding type oilseed rape combine harvester comprises a body (1), a power system, a header (2), a walking device (3), a threshing device (4) and a stubble treatment device (5) located in the front of the body (1). The header (2) is arranged at the front end of the body (1) and comprises a set of double-acting transverse cutting knives (6) and vertical cutting knives (7) on the two sides, wherein the transverse cutting knives (6) are located below the front end of the header (2), and the two sets of vertical cutting knives are located on the two sides of the front end of the header (2). According to the harvester, stable operation of the header in the oilseed rape harvesting process is guaranteed, it can be guaranteed that the harvester can effectively harvest upright oilseed rape with various heights, lodged oilseed rape with different heights and oilseed rape with different maturity grades, oilseed rape branches are effectively prevented from winding around the header when way opening operation is conducted in an irregular planting field, adaptability and harvesting capacity of the whole harvester are improved, and it is guaranteed that harvesting operation is smoothly conducted.

The invention discloses a method for preparing collecting agent for gold, silver and platinum family elements. The collecting agent can be obtained by adding alkanol in a black powder solution of allylic alkyl sulfur ammonia ester and fully stirring at room temperature to be transparent. The invention also provides a use method of the collecting agent, comprising the following steps of: grinding ore to a proper fineness to ensure that the mass fraction of solids in ore pulp is 20-50 percent; then adding lime or sulfuric acid and adjusting the pH value of the ore pulp to be 8.0-11.0; and finally adding 4-30g/t foaming agent and 2-100g/t collecting agent and foaming the gold, silver and platinum family elements according to the conventional method. The collecting agent has the advantages of favorable selectivity, high collection performance and moderate foaming viscosity and greatly improves the grade and the recovery rate of gold, silver, platinum/palladium metals.