3127 results about "Separation method" patented technology

The invention discloses a dynamic fluidized bed system and a dynamic fluidized separation method, belongs to the technical field of fluidized particle separation system measurement, and aims to solve the problem of poor detection precision of a mixed separation state of pulverized coal in a separation process in the prior art. In the dynamic fluidized bed system, a pressure acquisition unit acquires pressure signals at different positions of a bed layer in the vertical direction and transmits the pressure signals to a controller, the controller receives the pressure signals, calculates pressure difference signals, converts the pressure difference signals into density signals, and processes the density signals to generate a Hilbert map of particles in the bed layer; and judging whether the bed layer is in a mixed state or a separated state according to the Hilbert spectrum. The method can be used for dynamic fluidized separation of raw coal.

The invention relates to a method for purifying a monomer bis (2-hydroxyethyl) terephthalate (BHET) obtained by depolymerizing waste polyester through ethylene glycol (EG), and belongs to the technical field of polyester recycling. The BHET microwave radiation induced film evaporation separation and molecular distillation refining continuous process provided by the invention solves the problems of long process flow, poor continuity, more side reactions and low purity and yield in the direct separation and refining process of BHET in alcoholysis liquid based on a gas-liquid equilibrium separation method at present. The whole technological parameter requirement is mild, the process is short, continuity is good, the BHET purity of the product is larger than or equal to 99.0 wt%, the hue is good, and the BHET yield is larger than or equal to 80.0%. And meanwhile, the method has the advantages that EG is conveniently recycled in a system, the production process is cleaner and more environment-friendly, and the comprehensive efficiency advantage is obvious.

A method for separating amoxicillin and phenylacetic acid from reaction solution in one-step enzymatic synthesis of amoxicillin is provided. The method employs immobilized penicillin acylase mutant to catalyze the one-step synthesis of amoxicillin from penicillin potassium, and develops a separation process for the resulting reaction mixture. The technical scheme mainly comprises: Firstly separating the immobilized penicillin acylase mutant from the reaction solution through filtration; subsequently isolating amoxicillin via crystallization; followed by separating and recovering phenylacetic acid through toluene extraction and back extraction. This separation method enables rapid and efficient isolation of amoxicillin with high production yield, achieving an average crystallization rate of 93.22%. Concurrently, it demonstrates effective separation and recovery of phenylacetic acid while allowing recyclable use of the toluene extractant.

The invention belongs to the technical field of tungsten smelting, and particularly discloses a method for recycling tungsten from tungsten smelting soda boiling slag through reselection, tungsten in the slag is recycled through a physical mineral separation method, a large number of acid-base reagents are not introduced, acid-base wastewater is not generated, and high-energy-consumption roasting or high-temperature acid-base leaching is not needed. The process is simple, large-scale treatment can be achieved, reagent consumption is low, energy consumption is low, closed-loop circulation of mineral separation water can be achieved, no wastewater is discharged, the process is environmentally friendly and free of pollution risks, meanwhile, indexes of the soda boiling residues subjected to innocent treatment can reach industrial solid waste, hazardous waste is converted into common solid waste, and the economic benefit is high. The environment-friendly treatment cost is low.

The invention relates to the technical field of agricultural microbial agents, in particular to bacillus velezensis as well as a separation method and application thereof. The bacillus velezensis is preserved in the China General Microbiological Culture Collection Center, the preservation date is May 17, 2024, the preservation number is CGMCC No.30687, the preservation address is No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing, the postcode is 100101, and the bacillus velezensis is classified and named as bacillus velezensis. The bacillus velezensis separated from the soil of the Ningboo garden of the Academy of Agricultural Sciences in Yitai City of Shandong Province or the fermentation inoculant thereof can be simultaneously used as a preparation raw material of a growth promoting agent, a yield increasing agent, a soil conditioner and a bio-organic fertilizer, and has multiple application scenes.

The invention provides a preparation method of medicinal liquor and application of the medicinal liquor in preparation of analgesic and anti-inflammatory products, and relates to the technical field of medicines. The preparation method comprises the following steps: (1) crushing; (2) extracting; (3) standing and separating; and (4) freezing and filtering to obtain the medicinal liquor. In the preparation process, traditional Chinese medicine components are extracted through the steps of batch crushing, mixed extraction, standing, freezing and separation of supernate and suspension in different separation modes to obtain the medicinal liquor, and the medicinal liquor can better inhibit pain caused by thermal stimulation and chemical substances and has a better analgesic effect; the traditional Chinese medicine composition can inhibit capillary permeability increase caused by acetic acid, has a better effect of inhibiting inflammation exudation, and has remarkable analgesic and anti-inflammatory effects.

The invention belongs to the technical field of separation of products for synthesizing antibiotics by an enzymic method, and particularly relates to a method for separating and recycling an amoxicillin product synthesized by a one-step method based on catalysis of kluyveromyces citricacidophilus beta subunit G385 mutant penicillin acylase. An immobilized penicillin acylase mutant is used for catalyzing penicillin potassium to synthesize amoxicillin in one step, a set of method for separating amoxicillin and phenylacetic acid is developed for an obtained reaction mixture, and the technical scheme mainly comprises the following steps: firstly, separating the immobilized penicillin acylase mutant from a reaction solution through filtration; then, amoxicillin is separated out through crystallization; and then crystallizing, separating and recovering phenylacetic acid through toluene extraction, back extraction and the like. According to the separation method, the amoxicillin can be rapidly and efficiently separated, the yield of the amoxicillin is relatively high, and the average crystallization rate reaches 93.22%; meanwhile, the separation and recovery effects of phenylacetic acid are good; and the extraction agent toluene can be recycled.

The invention discloses an electrolytic hydrogen production system and method for deeply reducing the hydrogen content in oxygen. Comprising an alkaline electrolytic bath, an oxygen side gas-liquid separator, a hydrogen side gas-liquid separator, an alkaline liquor circulating pump, a first gas-liquid separator additionally arranged on the front side of the oxygen side gas-liquid separator, and a hydrogen-in-oxygen deep separation device for deeply removing hydrogen in an oxygen side gas-phase product, the first gas-liquid separator is additionally arranged in the oxygen-side gas-liquid separation system, so that a deep separation device capable of purifying and dehydrogenating the oxygen-side gas-phase product can be realized, and when the hydrogen content in oxygen at the gas-phase outlet of the oxygen-side gas-liquid separator is relatively high, the hydrogen-in-oxygen deep separation device is started to deeply remove hydrogen in the oxygen-side gas-liquid separation system, so that the hydrogen content in the oxygen-side gas-liquid separation system is greatly reduced. And the hydrogen content in oxygen in the water electrolysis hydrogen production system is reduced, and the safety of the system is improved.

The invention provides a coalescence-selective filtration-deep bed filtration efficient oil-water separation system which comprises a coalescence system, a selective filtration system and a deep bed filtration system, oily wastewater enters a coalescer, and tiny oil droplets are coalesced into larger oil droplets through wetting coalescence and collision coalescence; the coalesced wastewater enters a selective filter, oil droplets and water respectively flow out through an oil channel and a water channel, and primary separation is realized; according to the present invention, the water after the primary separation enters the deep bed filter to achieve the deep separation, the efficient oil-water separation and the water quality standard discharge or reuse are achieved through the combination process of coalescence, selective filtration and deep bed filtration, and the system has advantages of high treatment efficiency, low energy consumption, less carbon emission, oil and water recycling, or water standard discharge.

The invention provides a chiral resolution method and application of a 3-aryl substituted glutaric acid monoester compound, and the method comprises the following steps: taking a substance as shown in a formula I as a starting raw material, and carrying out alcoholysis to obtain a racemic intermediate as shown in a formula IV; and splitting the intermediate shown in the formula IV, and then dissociating to obtain the compound shown in the formula III, which has a single spatial configuration and an ee value of more than 99%. A cyclic anhydride substrate with a symmetrical structure is used and reacts with alcohol to obtain racemic 3-aryl substituted glutaric acid monoester, a target configuration with high chiral purity is obtained by screening some resolution reagents and solvents and performing salifying resolution on the 3-aryl substituted glutaric acid monoester, the operation is simple, the resolution reagents are easily available in the market and can be recycled, and the method is suitable for industrial production. The method has the advantages that an expensive chiral catalyst or a harsh enzyme catalysis condition is avoided, the reaction cost is reduced, amplified production is facilitated, the ee value of a target configuration can be increased to 99% or above, and the method is an economic and environment-friendly technical route which is simple in post-treatment and convenient for amplified production.

The invention discloses a preparation method and device of a low molecular weight cutoff ultrafiltration membrane, and belongs to the technical field of ultrafiltration membrane preparation. A thermally induced phase separation method and a non-solvent induced phase separation method are combined to prepare the membrane, the relationship between the flux and the retention rate of the ultrafiltration membrane is balanced, high flux is considered while high retention of low-molecular-weight substances is provided, an upper-layer membrane casting solution and a lower-layer membrane casting solution are used for double-layer simultaneous coating, a substrate is coated with the membrane casting solutions, and the membrane is obtained through a dry process section. Phase separation is carried out after entering a coagulating bath, a finished membrane is obtained through cleaning, the obtained membrane is of an integrated structure, the coagulating bath used in the membrane casting process is pure water, and recycling and aftertreatment of the ultrafiltration membrane are facilitated.

The invention discloses a lead-tin separation method in a tin soot wet recovery process, which is used for lead-tin separation in slag charge after zinc and copper recovery of tin soot, and comprises the following steps: lead immersion: adding tin-lead mixed slag charge into prepared saturated chlorine-containing salt water to dissolve lead in the chlorine-containing salt water to obtain lead chloride salt water and tin sludge, thereby realizing lead-tin separation; the obtained tin mud is sold as a product; and lead removal: slaked lime is added into lead chloride saline water, lead slime and chlorine-containing saline water are obtained after the reaction is completed, the chlorine-containing saline water is returned to the lead dipping procedure, and the obtained lead slime can be sold as a byproduct. According to the method, tin and lead are effectively separated from the slag obtained after zinc and copper recovery of the tin soot is completed through a chemical method, the method is simple and easy to operate, the raw material cost is low, the grade of a tin sludge product is improved, meanwhile, a lead by-product is produced, and therefore the economic benefit of tin soot wet recovery is improved; and the whole process of lead-tin separation does not generate waste water, waste residues and waste gas, is environment-friendly and is worthy of popularization and application.

The invention relates to a method for recovering mixed salts (mainly containing calcium chloride, sodium chloride and potassium chloride) from a household garbage incineration fly ash leaching solution, and particularly provides two separation technical schemes. The traditional separation method generally needs to use a large amount of decalcifying agent, so that the cost is high, calcium chloride cannot be effectively recycled, and the problem of resource waste exists. In order to solve the problems, the invention selectively dissolves calcium chloride in the mixed salt by adopting a specific organic solvent (such as ethanol or methanol) and utilizing the characteristics that the solubility of calcium chloride in the solvent is high, the solubility of sodium chloride and potassium chloride is low, and the boiling point is relatively low. And a calcium chloride product can be recovered after solvent evaporation. Furthermore, the residual mixed salt is further washed using the specific organic solvent to remove entrained calcium chloride, thereby obtaining a mixed salt containing predominantly sodium chloride and potassium chloride. According to the technical scheme 1, the mixed salt subjected to separation and calcium removal is subjected to dissolution treatment under the high-temperature condition, potassium chloride is dissolved, the particle size of sodium chloride crystals is promoted to be increased, the sodium chloride crystals are obtained through solid-liquid separation, and then mother liquor is cooled and crystallized to recover potassium chloride. According to the technical scheme 2, the mixed salt subjected to separation and calcium removal is subjected to aging treatment so as to promote particle size increase of sodium chloride and potassium chloride crystals, then the aged mixed salt is separated by adopting a flotation method, and sodium chloride and potassium chloride products are recycled respectively.

The invention belongs to the field of environmental protection and pollutant treatment, and relates to a method for enriching and detecting microplastics in a surface water body. The lignin is grafted with amido and carboxyl through two-step reaction, firstly, carbon quantum dot active site powder with positive charges on the surface is prepared, the carbon quantum dot active site powder is cross-linked with the modified montmorillonite, and the carbon quantum dot active site microporous adsorbent is prepared, so that the prepared adsorbent has multiple surface functional groups and multiple and uniform active sites, and the adsorption efficiency is improved. The adsorption speed of the micro-plastics in the water body can be increased, the adsorption capacity of the micro-plastics in the water body is improved, and rapid enrichment and separation of the micro-plastics in the water body are realized. Based on the enrichment and separation method, the invention further provides a method for measuring the microplastics in the water environment. According to the invention, rapid filtration, enrichment and detection of micro-plastics in water are realized, the operation is simple and convenient, and the accuracy is high.

The invention provides a gas-liquid separation device, which comprises: a tank body, the side wall of the tank body is provided with a gas-liquid inlet and a liquid outlet, and the top of the tank body is provided with a gas outlet; the gas-liquid separation cavity is formed in the tank body, a gas-liquid separation unit is arranged in the gas-liquid separation cavity, and the gas-liquid separation unit comprises a rotational flow plate and a baffle plate assembly located below the rotational flow plate; the gas washing cavity is formed in the tank body and is positioned above the gas-liquid separation cavity; a gas washing unit is arranged in the gas washing cavity; wherein the gas-liquid inlet penetrates through the side wall of the tank body and extends inwards to be communicated with the rotational flow plate, the rotational flow plate is configured to enable to-be-separated gas-liquid fluid from the gas-liquid inlet to rotate and then enter the baffle plate assembly so as to realize gas-liquid separation, separated gas with liquid drops moves upwards, liquid removal is carried out through the gas washing unit, and the gas washing unit is used for washing the gas with the liquid drops. The gas after liquid removal is discharged through the gas outlet, and the separated liquid moves downwards and is discharged through the liquid outlet. The invention also provides a gas-liquid separation method.

The invention relates to the technical field of hydrometallurgy, in particular to a method for selectively leaching and separating cobalt and manganese from crude cobalt hydroxide leaching residues. The separation method provided by the invention comprises the following steps: S1, pre-reduction treatment; and S3, cobalt is leached through selective oxidation, and manganese is precipitated. According to the separation method, the synergistic effect of ORP and pH is regulated and controlled, proper reducing agents and oxidizing agents are selected, cobalt is selectively leached through step-by-step oxidation, dissolution of manganese is inhibited, manganese circularly entering a leaching and extraction system is reduced, the leaching and extraction operation cost is reduced, meanwhile, a selective complexing agent is introduced, impurity co-dissolution is reduced, the subsequent purification process is simplified, and the method is suitable for industrial production. The preparation method is simple to operate and easy for industrial production, and has a good application prospect.

The present invention discloses a solid-liquid separation device and a solid-liquid separation method using compressed air as a power source, comprising a device body, a reflux trough, a solid-liquid separation zone, a sludge concentration zone, a clean water trough, an inclined plate and an air lift pipe, one end of the inclined plate is connected to the air lift pipe, the other end of the inclined plate is inclined downward and forms a sludge port with the bottom of the device body, the air lift pipe is connected to a compressed air pipe, compressed air enters from the compressed air pipe to drive the air lift pipe to lift sewage to be solid-liquid separated to the upper end of the reflux trough, the sewage descends and refluxes along the upper end of the reflux trough, enters the solid-liquid separation zone through the opening at the lower end of the reflux trough along the inclined plate, the sewage undergoes solid-liquid separation in the solid-liquid separation zone, the clean water flows upward to the clean water trough, the concentrated sludge descends to the sludge concentration zone and is discharged from the device body through the sludge port. It has the characteristics of being simple, efficient, land-saving, and having good applicability, effectively solves the problem of solid-liquid separation in sewage treatment, and is suitable for popularization and application.

The invention provides a defoaming separation device for minerals and a separation method, and belongs to the technical field of mineral separation, the device comprises a feeding pipeline, a defoaming box, a vacuum pump and a PLC control system, the defoaming box is connected with the feeding pipeline, a moving plate is arranged in the defoaming box, the bottom of the moving plate is connected with a jacking assembly, and the jacking assembly is connected with the vacuum pump. The center of the top of the defoaming box is connected with a driving assembly, the top of the defoaming box is further connected with an exhaust pipe, a transmission shaft of the driving assembly extends into the defoaming box, and the transmission shaft is sequentially connected with a first-stage stirring assembly, a second-stage stirring assembly and a third-stage stirring assembly from top to bottom. The blade angle of the first-stage stirring assembly is adjustable through forward installation or reverse installation of an adapter block, a solid-liquid separation assembly is arranged at the bottom of a movable plate, and a vacuum pump is connected to the top of the defoaming box through a negative pressure pipeline. According to the invention, defoaming and solid-liquid separation can be efficiently carried out on the froth pulp after flotation, the defoaming speed is high, the separation efficiency is high, the energy consumption is low, and good economic benefits and environmental protection benefits are achieved.

The invention provides a separation method of single-walled carbon nanotubes, which adopts a reversed-phase mode aqueous two-phase extraction separation of single chiral SWCNTs, and comprises the following processes: firstly preparing a PEG / Dex aqueous two-phase system and a single-walled carbon nanotube dispersion liquid SDC-SWCNTs dispersion liquid, then adding the SDC-SWCNTs dispersion liquid into an upper phase of the PEG / Dex aqueous two-phase system, then adding a SDS solution with a certain concentration into the system, and carrying out solid-liquid separation to obtain the single-walled carbon nanotubes. The preparation method comprises the following steps of: performing vortex mixing, centrifuging, adding an SDC solution with a certain concentration, performing extraction separation, and gradually increasing the SDC content in an extraction system to separate out single chiral single-walled carbon nanotubes with diameters from small to large. The separation method provided by the invention can realize rapid and efficient separation of the small-diameter single-walled carbon nanotubes.

A gas-liquid separation apparatus includes a tank and a flow reducing component. An inlet is formed in a middle of the tank. A hydrogen outlet is formed in a top of the tank. A processing chamber connected to the inlet. The flow reducing component is formed in the processing chamber and maintained above the inlet. The flow reducing component forms a flow reducing space and a flow partition chamber in a part of the processing chamber above the inlet, a gas-liquid initial separation space in the processing chamber and below the flow reducing component, at least one connection hole and a connection channel. The flow partition chamber is connected to the flow reducing space through the at least one connection hole. The gas-liquid initial separation space is connected to the flow partition chamber through the connection channel. The flow reducing space is arranged to be connected to the hydrogen outlet.

The invention discloses a method for extracting and separating rare earth elements from coal-based solid waste. Coal gangue and fly ash are used as raw materials. The extraction and separation method comprises the following steps: S1, roasting activation pretreatment of the coal-based solid waste; s2, carrying out sulfuric acid leaching on the coal-based solid waste subjected to activation pretreatment in the step S1, and carrying out solid-liquid separation to obtain a sulfuric acid leaching solution and solid residues; s3, an anti-solvent is slowly added into the sulfuric acid leaching solution separated in the step S2, and rare earth elements are selectively precipitated and recycled; and S4, evaporating the filtrate obtained by separation in the step S3, and recovering the anti-solvent for reutilization. According to the method provided by the invention, the technological process can be shortened, the technological steps are simplified, and the selective recovery of rare earth elements in the leachate is easier.

The invention provides a separation method of a catalyst for preparing butyraldehyde through propylene carbonylation, and relates to the technical field of chemical synthesis. The separation method comprises the following steps: carrying out flash evaporation separation and low-pressure evaporator evaporation on a material obtained by carrying out a propylene carbonylation reaction on propylene and synthesis gas as raw materials, obtaining a gas-phase material from a collecting tank of a low-pressure evaporator, and outputting a liquid-phase catalyst solution; the gas-phase material is subjected to condensation and gas-liquid separation, crude butyraldehyde is output, and obtained non-condensable gas returns to a liquid distribution chamber of the low-pressure evaporator; wherein the catalyst is acetylacetone triphenyl phosphorus silicification carbonyl rhodium, and the operation temperature of the low-pressure evaporator is 85-95 DEG C. By controlling the circulating air volume and the evaporation temperature, high-temperature deactivation of the catalyst is prevented, the service life of the catalyst is prolonged, and the process cost is reduced; the process flow is simplified, and the method is suitable for large-scale process production.

The invention discloses a hydraulic oil dissolved air ultra-vacuum separation device and a separation method thereof, and belongs to the technical field of hydraulic system oil purification. Comprising the steps that oil injection is conducted, an oil pump conveys crude oil from a negative-pressure crude oil tank into a separation oil cylinder, and by switching a first electromagnetic valve, oil inlet and oil discharge of a left cylinder and a right cylinder of the separation oil cylinder or oil inlet and oil discharge of the right cylinder and the left cylinder are achieved; after the separation oil cylinder is filled with the oil liquid, the first electromagnetic valve is closed, the oil charging and discharging pipeline is cut off, then the second electromagnetic valve is opened, and the air exhaust pipeline is communicated; measuring the gas content, injecting a small amount of separated hydraulic oil into the piston type oil gas content measurer, discharging the separated hydraulic oil to a negative pressure isolation oil tank, switching a first electromagnetic valve, switching on a third electromagnetic valve, and starting an oil pump; and after crude oil is injected into the right cylinder of the separation oil cylinder, oil in the left cylinder of the separation oil cylinder is discharged into the negative pressure isolation oil tank through the isolation piston ring. The method is simple to operate; discharge of extracted air can be achieved, and the air is prevented from flowing back into oil.

The invention discloses a method for co-producing cellulose, xylose and lignin from a lignocellulose raw material. The method provided by the invention comprises the following steps: step 1, carrying out acid impregnation on a crushed lignocellulose raw material, removing an acid impregnation liquid, and treating by adopting a steam explosion method to obtain a pretreated material; 2, washing the pretreated material with water, and carrying out solid-liquid separation to obtain a liquid phase I containing xylose and a solid material I; 3, carrying out alkali treatment on the solid material I, and carrying out solid-liquid separation to obtain a liquid phase II and a solid material II; optionally, washing the solid material II in the step 4, and carrying out solid-liquid separation to obtain a wet cellulose material and a liquid phase III; optionally, 5, drying the wet cellulose material to obtain cellulose; step 6, combining the liquid phase 2 and the optional liquid phase 3, carrying out acid treatment, and carrying out solid-liquid separation to obtain a wet lignin material; and optionally, 7, drying the wet lignin material to obtain the lignin. The separation method provided by the invention has the advantages of few types of used chemical reagents, simple process and better separation effect.

The invention relates to a Kr separation method and system based on selective desorption, a terminal and a storage medium, and relates to the technical field of rare gas purification. Calculating the difference between the quotient of the historical krypton loss amount and the adsorption column mass and the initial unit krypton adsorption amount to generate the actual unit krypton adsorption amount; calculating the quotient between the product of the actual unit krypton adsorption quantity and the mass of the adsorption column and the flow velocity of the single to-be-adsorbed air so as to generate actual adsorption time; controlling the first-stage adsorption column to adsorb the to-be-adsorbed air according to the actual adsorption time so as to generate a to-be-separated adsorption column; controlling the adsorption column cleaning device to clean the adsorption column to be separated according to the actual unit krypton adsorption quantity, and collecting desorbed gas after cleaning to the waste gas storage device; and performing desorption operation on the cleaned adsorption column, controlling a gas collection device to collect desorbed gas, and heating and activating the first-stage adsorption column to recover the adsorption capacity. The application has the effect of reducing krypton loss.

The invention relates to a coalescence reinforced cyclone separation device and method for removing oil drops from gas. The device comprises a cylindrical barrel, the interior of the barrel is divided into an inlet cylindrical section provided with a tangential inlet, the lower portion of the inlet cylindrical section is sequentially provided with a first-stage rotational flow section, a second-stage rotational flow section and a bottom oil storage section which are coaxially communicated with one another, and the upper portion of the inlet cylindrical section is provided with a top filtering section coaxially communicated with the inlet cylindrical section; coalescence assemblies are attached to the inner walls of the inlet cylindrical section, the first-stage rotational flow section and the second-stage rotational flow section, a bottom coalescence triangle is arranged in the center of the bottom face of the bottom oil storage section, and a top filtering assembly is coaxially arranged in the top filtering section; the cyclone separation and coalescence separation technologies are combined, centrifugal force and the adhesion effect of coalescence fibers are utilized, fine oil drops are captured and coalesced into large oil drops, the large oil drops finally flow into the bottom oil storage section, gas purification is achieved, and oily liquid drops small in size and wide in particle size range in gas are effectively separated. The device has the advantages of high separation precision, high efficiency, compact structure, convenience in maintenance and the like.

The invention provides a coal seam gas extraction drill hole gas-liquid-solid filtering type separation device and method. The coal seam gas extraction drill hole gas-liquid-solid filtering type separation device comprises a gas-solid-liquid separation mechanism, and the gas-solid-liquid separation mechanism is used for conducting gas-solid-liquid separation on coal seam gas extracted through drill holes; the secondary filtering mechanism is arranged at the top of the supporting base, and the secondary filtering mechanism is used for filtering water vapor and small-particle-size coal dust; the secondary filtering mechanism comprises a secondary filtering cylinder and a condensing assembly, the condensing assembly is used for condensing and collecting water vapor, and an absorbing and drying assembly is connected to the upper portion of the secondary filtering cylinder and used for further absorbing and drying the water vapor. The gas-solid-liquid separation mechanism is used for filtering and separating substances extracted from a coal seam drill hole, gas, solid and liquid are separated and guided out, the secondary filtering mechanism is used for separating water vapor and small-particle-size coal dust mixed in the gas again, the dryness of the gas is improved, a gas extraction system is prevented from being blocked, and the gas extraction efficiency is improved. And subsequent gas extraction work is facilitated.

The invention provides a fused salt extractive distillation separation method of zirconium-hafnium tetrachloride, which is particularly suitable for a fused salt extractive distillation separation device. When the fused salt extractive distillation separation is carried out, main components such as a distillation tower, a sublimator, a reflux tank, a condenser, a reboiler and a circulating tank are connected, then a zirconium and hafnium chloride raw material to be separated and chloride salt for distillation are filled, and finally the device is started to realize the separation of zirconium and hafnium chlorides under the distillation condition. The separation device and method have good usability and process adaptability, the prepared zirconium tetrachloride and hafnium tetrachloride meet the use requirements in the fields of atomic energy, aerospace, high-power laser, integrated circuits and the like, and reference and guidance are provided for research, development and application of zirconium and hafnium tetrachloride molten salt rectification separation technology and equipment.

The invention provides a flotation separation method for complex and difficult-to-separate high-sulfur copper ore, and belongs to the field of mineral flotation, lime is adopted to adjust ore pulp to a low-alkali environment, and efficient recovery of valuable elements of copper, silver and sulfur is achieved under the combined action of an inhibitor and a synergist. A low-alkali copper separation process is adopted, copper-sulfur intergrowth and silver-containing minerals are prevented from being strongly inhibited in a high-alkali ore pulp environment, regrinding is introduced before copper concentration operation to promote dissociation of the copper-sulfur intergrowth, and the grade of copper concentrate is improved. During copper roughing, gangue minerals and pyrite are inhibited by adopting an inhibitor to prevent the gangue minerals and the pyrite from forming a cover on the surface of metal minerals, and selective inhibition on the pyrite is generated in the forms of strong oxidation, electrostatic adsorption, hydroxylated metal point adsorption and the like on the surface of the pyrite; the synergist is adopted to change the surface charge of gangue minerals, the argillaceous gangue is prevented from forming a mucus coating on the surface of the chalcopyrite by means of electrostatic repulsion, meanwhile, the flotation froth performance is enhanced, floating of the chalcopyrite is accelerated, and the copper separation effect is optimized.

The invention discloses an environment-friendly flotation separation method for copper-lead bulk concentrate. The method comprises the following steps: (1) preparing copper-lead mixed ore pulp; (2) flotation pretreatment of copper-lead mixed ore pulp; (3) carrying out flotation on the copper-lead mixed ore pulp; and (4) performing solid-liquid separation to obtain concentrate. The flotation method has the advantages that the novel flotation method capable of efficiently and environmentally separating complex and difficult-to-separate copper-lead bulk concentrate is provided, and the copper grade and the copper recovery rate can be effectively improved; meanwhile, the selected chemicals are environment-friendly and nontoxic chemicals, so that the chemicals are wide in source, low in price and very friendly in environmental protection requirement; the method is not only a key for solving the current technical bottleneck, but also an inevitable requirement for promoting green and sustainable development of the mining industry.