32results about How to "Effective separation and extraction" patented technology

The invention discloses a method for recycling platinum group metal from waste catalysts. The method comprises the following steps that (1) the waste catalysts containing the platinum group metal, nickel type collecting agents, calcium oxide and silicon dioxide are crushed and mixed uniformly according to a proportion; (2) the proportioned mixture is smelted at the high temperature, and the constant temperature is kept for a period of time, so that molten sulfonium with nickel as main components is deposited below a slag layer of metallic oxide; (3) water cooling is conducted on the sulfonium at the high temperature, so that metal particles are obtained; (4) the crushed metal particles are leached through sulfuric acid at the high pressure, and valuable metal such as nickel is recycled from leaching liquid; and (5) the platinum group metal is further extracted from leaching slag. Compared with the prior art, the method is simple in development process, good in enrichment effect and capable of being effectively used for separation and extraction of valuable metal in the waste catalysts.

Belonging to the technical field of traditional Chinese medicine extraction, the invention discloses a technological method for extraction of protocatechuic acid from Blumea riparia (Bl.) DC. The method for preparation of a protocatechuic acid monomer consists of: water extraction, concentration, extraction, elution, and TLC preparation and purification. A compound B is determined as protocatechuic acid with a concentration of equal to or more than 99% by HPLC analysis, and is the protocatechuic acid monomer. The technological method for extraction of chlorogenic acid from Blumea riparia (Bl.) DC solves the problems of low preparation purity, small preparation quantity, complex preparation process, and difficult realization of industrialization production. By means of water extraction, concentration, extraction, elution and other processes, high extraction purity and a simple preparation process can be realized. Thus, the method is suitable for popularization, and meets the need of people for protocatechuic acid.

The invention belongs to the technical field of deep processing of tea, particularly relates to a method for separating and extracting natural theanine. At the temperature of 5-75 DEG C, aqueous solution containing theanine is enabled to flow through an adsorbing column filled with inorganic zeolite molecular sieve adsorbent; the theanine is adsorbed; ammonia spirit is used to elute the theanine adsorbed by the adsorbing column; alcohol is added after vacuum evaporation and concentration are carried out on the eluent; the theanine is separated out when the temperature is cooled to be about 0 DEG C; pumping filter is carried out; and recrystallization is carried out for 1-3 times to obtain a product the theanine content of which is more than 90%. The adsorbent can be repeatedly regenerated and reused, and the operational process is safe, simple and convenient and has low energy consumption. The invention is suitable for separating and extracting the theanine from a tea leaching solution, is especially suitable for processing low-grade tea, rough and old tea, tea tree roots and the like, or can be used for utilizing leftovers, waste liquor containing the theanine and other plants containing the theanine in the deep processing process of the tea.

The invention provides a refining and filtering device which comprises a fixed base, wherein supporting frames are fixedly connected to the two sides of the top of the fixed base, a supporting table plate is fixedly connected to the tops of the supporting frames, a groove hole is formed in the surface of the supporting table plate, and an oil collecting funnel is arranged in the groove hole; vertical plates are fixedly connected to the two sides of the top of the supporting table plate, an arc-shaped sliding rail is fixedly connected between one side of each vertical plate and the supporting table plate, a primary filtering assembly is arranged between the two vertical plates, a containing boss is integrally arranged on the inner side of the supporting frame, and a fine filtering assemblyis arranged on the inner side of the containing boss. Based on cooperation of the primary filtering assembly and the fine filtering assembly, the visible impurities and dissolved impurities in crude oil are intercepted through primary filtering, boiling, filtering and fine filtering, wherein the contact area between the filtering net and oil is increased, the impurities shake and deviate towards one side to be concentrated, filtering holes are prevented from being blocked, and thereby the filtering efficiency and the filtering precision are improved.

The invention discloses a system and method for separating and extracting dissolved gas from environmental water. The system is characterized by comprising a water-quality treatment device, a membrane degassing device, a vacuum collection device and a flow control device. The treatment method is characterized by comprising the following steps of firstly removing impurity particles in the environmental water by virtue of the water-quality treatment device, degassing the dissolved gas in the environmental water by virtue of the membrane degassing device and further discharging degassed environmental water; and finally further pumping and collecting the dissolved gas generated in the membrane degassing device into an gas cylinder by virtue of the vacuum collection device. The system disclosed by the invention has the characteristics of low cost, simple operation, high degassing efficiency, convenient carrying and maintenance, low weight, small size and the like, can be carried by single people and has almost no any application limitation on the extreme field environment so that the system is very suitable for extracting dissolved gas from the environmental water.

The invention discloses a device and method for recovery, separation and purification of an aluminum-tin alloy through vacuum continuous crystallization. The device comprises a shell, a vacuum pump, aU-shaped crystallization tank, a melting pot, a melt pot and a crystal pot. The shell is of a vacuum sealed structure, the U-shaped crystallization tank, the melting pot, the melt pot and the crystalpot are all arranged in an inner cavity of the shell, the U-shaped crystallization tank is arranged in an inclined mode, a tank head is arranged at the higher end of the U-shaped crystallization tank, a tank tail is arranged at the lower end of the U-shaped crystallization tank, the crystal pot is connected with the tank head, the melt pot is connected with the tank tail, a plurality of heating elements are arranged at the bottom of the U-shaped crystallization tank, the temperature of the tank head is higher than that of the tank tail, and a screwing device is arranged in the U-shaped crystallization tank and driven by a motor. According to the device and method for recovery, separation and purification of the aluminum-tin alloy through vacuum continuous crystallization, effective separation and purification of aluminum and tin in aluminum tin is achieved through continuous crystallization under vacuum conditions, and crude aluminum and crude tin are finally obtained, the process issimple, the operation is convenient, the raw material has high universality, the cost is low, the device is simple, the process is safe and controllable, and the aluminum-tin alloy with a wide range of quality change can be treated.

The invention relates to a method for extracting lithium carbonate from lithium-rich clay by an acid-base combination method, the method comprises the following steps: adding the lithium-rich clay into a sulfuric acid solution with a certain concentration for leaching, and then filtering and separating to obtain an acid leaching solution and acid leaching residues; adding a sodium hydroxide solution into the acid leaching residues for alkaline leaching, then performing filtering separation, and obtaining alkaline leaching liquid and alkaline leaching residues; and introducing carbon dioxide gas into the alkaline leaching solution, and filtering when the pH value reaches 8.5-10.5 to obtain a lithium carbonate solid and a carbon component mother solution. The method has the advantages of being simple in technological process, free of special requirements for equipment, low in energy consumption, good in controllability of technological parameters, small in residual amount of residues, low in production cost and the like, and a new way is opened up for development and utilization of the lithium-rich clay.

The invention provides a preparation method of a kaempferol surface molecularly imprinted polymer microsphere with TiO2 as a core by adopting a seed precipitation polymerization technology. The method solves the problems of severe embedding phenomenon and low separating treatment efficiency of polymer microspheres prepared through a precipitation polymerization technology and the problem of easy gelatinization of an initiator in a polymerization solution in the preparation process of imprinted microspheres prepared through a surface imprinting technology needing a surface grafting technology. An imprinted polymer microsphere prepared through adopting the method has the advantages of regular particle shape, uniform size, no agglomeration phenomenon and increased specific surface area, and makes binding sites of a polymer distributed on the surface of the microsphere in order to improve the adsorption performance of the kaempferol surface molecularly imprinted polymer microsphere. The above polymer prepared in the invention can realize effective separation and extraction of ginkgo flavone aglycone, and has a wide application prospect.

The invention relates to the technical field of wet metallurgy, in particular to a method for extracting Zn, Mn, Pb and Ag from zinc electrolysis anode mud. By means of the total six steps of washing, ball milling, electrolyzing, leaching, replacement and liquid waste treatment, the process of extracting zinc, manganese, lead and silver from the zinc electrolysis anode mud is completed, the separation effect is remarkable, the cost is low, the metal recovering rate is high, the quality is good, waste residues and liquid waste are fully utilized in the whole process, and little pollution is caused.

The invention relates to a method for treating titanium-containing red mud. The method comprises the steps that after the titanium-containing red mud is leached through a hydrochloric acid solution, leaching residues and a leaching solution are obtained; and the treatment process of the leaching residues comprises the steps that the leaching residues are further leached by a sulfuric acid solution, and titanium dioxide is obtained through hydrolysis and roasting treatment. The treatment process of the leaching solution comprises the steps that the leaching solution is evaporated and roasted, a mixture is obtained, a reducing agent and an additive are added to the mixture, briquetting forming is conducted, a green ball is obtained, reduction and melt separation treatment are conducted on the green ball, and melt iron and aluminum-rich slag are obtained. By the adoption of the method for treating the titanium-containing red mud, effective separation and extraction of titanium, iron and aluminum can be achieved, the economic value of aluminum extraction from the aluminum-rich slag is increased, the energy consumption is lower, and the production cost is saved.

The invention provides a method for extracting and separating neutral nitrides in coal tar by utilizing non-toxic biodegradable ionic liquid. One or a combination of more than two of n-hexane, n-heptane, n-octane or n-dodecane is used as a solvent, and the non-toxic biodegradable tetramethylguanidyl ionic liquid is synthesized by a one-step method; and extracting and separating to obtain the neutral nitride through three-stage counter-current extraction, back extraction and reduced-pressure flash evaporation processes by taking the neutral nitride as an extracting agent. The tetramethylguanidyl ionic liquid is non-toxic, biodegradable, simple to synthesize, high in yield and purity, low in energy consumption, low in cost, small in waste liquid generation amount, green and environment-friendly. According to the method, the removal rate of high-boiling-point neutral nitrides in the wash oil and the anthracene oil is greatly increased, the excellent extraction and separation effect is achieved, and the extraction efficiency is high. The extraction and separation process is simple, and the device is reasonable; the nontoxic biodegradable tetramethylguanidyl ionic liquid is high in recovery rate and purity, can be recycled, and is safe and environment-friendly.

The invention discloses a wet method resource utilization system for domestic waste incineration power generation furnace slag, which comprises a slag storage system, a slag feeding system, a slag sorting system, a slag magnetic separation system, an iron treatment system, a non-magnetic metal treatment system, sewage Treatment system; a wet-process resource utilization system of domestic waste incineration power plant slag according to the present invention, which can effectively separate and extract various metals in the slag, realize resource utilization, and is environmentally friendly.

The invention discloses an extruder for preparing a super-hydrophobic high polymer material composite microporous emulsion. The extruder comprises a mounting base, a material conveying barrel part, a mixing and extruding shaft, a feeding end seat, a separating and discharging assembly, an inner heating assembly and a tail extrusion assembly, wherein the material conveying barrel part is transversely and fixedly arranged on one side of the upper end face of the mounting base through a fixed frame, the feeding end seat is fixedly arranged on the upper end face of the material conveying barrel part in a penetrating mode, the mixing and extruding shaft is coaxially arranged in the material conveying barrel part in a relatively rotating mode, one end of the mixing and extruding shaft is connected with a rotating motor arranged outside the material conveying barrel part in a transmission manner, the separating and discharging assembly is arranged on one side, far away from the feeding end seat, of the material conveying barrel part, the separating and discharging assembly is used for carrying out separation and extraction on mixed preparation materials, so that agglomerated particles in the interiors of the materials are removed in time, the inner heating assembly is further arranged on the upper end face of the mounting base, and the upper end of one side of the inner heating assembly is transversely provided with the tail extrusion assembly in a communicating mode.

The invention discloses a method for extracting polyhalite from polyhalite ore containing gangue mineral. The method comprises the steps that firstly, polyhalite ore containing gangue minerals containing halite and silicate and/or scrap salt is ground, a dispersing agent and ore grinding mother liquor are added, and ore grinding slurry is obtained; secondly, an adjusting agent and a flocculating agent are added in the ore grinding slurry, and a flotation raw material is obtained; thirdly, the flotation raw material is subjected to roughing in flotation mother liquor, and a selected raw material and a scavenging raw material are obtained; fourthly, the selected raw material is sequentially subjected to primary selection and secondary selection, secondary selected concentrates are obtained,the scavenging raw material is subjected to scavenging, and scavenging tailings are obtained; and fifthly, the flotation mother liquor and washing mother liquor are mixed to serve as a washing medium,solid-liquid separation is conducted after the secondary selected concentrates are washed, and polyhalite products are obtained. The method is suitable for separating and extracting the polyhalite from the polyhalite ore containing gangue minerals containing the silicate and/or the scrap salt and the like, and a technical scheme for utilizing the polyhalite in other types of polyhalite ore is further provided.

The invention discloses a purple rice natural dye, which is prepared from the following ingredients in parts by weight: 30.00-45.00 parts of purple rice, 12.00-16.00 parts of iron ions, 8.00-13.00 parts of scindapsus aureus, 1.50-3.50 parts of alginic acid, 17.00-24.00 parts of fuchsin, 14.00-26.00 parts of roses, 3.50-7.50 parts of impatiens balsamina and 2.00-5.00 parts of potassium sorbate.