36results about How to "Good extraction and separation ability" patented technology

The invention relates to an extraction method of platinum in a high-concentration platinum solution. The method comprises the following steps of 1) diluting a high-concentration platinum waste dissolving solution with a hydrochloric acid solution with the concentration being 4mol/L; and 2) preparing the platinum solution on which the first-grade extraction is performed by an extraction agent in a dilution manner by taking normal octane as a diluent and N-normal-butyl valnoctamide as a solute and discharging a raffinate so as to obtain an extract containing the platinum. By utilizing the method, the concentration of the platinum in the material solution can be improved to 20g/L; the first-grade extraction rate E is greater than or equal to 99.5%; the technological process is reduced; and the treatment time is shortened. Thus, the method is efficient.

The invention relates to a mixer settle extraction tank that is applicable to the extraction of high flow rate solvent, in particular to an extraction case combined by single-stage mixer settle extraction tanks. A two-phase mixer is stirred and driven by a turbine and the stirring has a pumping effect for two-phase fluid. Two phases are induced to a place below a stirring axial center by a diversion tube in a mixing chamber. The mixed phases are layered in a settling chamber, wherein, a light phase flows into a light phase box and enters a next stage mixing chamber through the diversion tube and a heavy phase gets across an overflow plate of a heavy phase box and enters a former stage mixing chamber and the two phases form an adverse current mode in a cascade stage device. The settling chamber is provided with a return line to be communicated with the mixing chamber to guarantee that the mixing phase ratio of the two phases in the mixing chamber is less than 4 when the flow rate of the two phases is high. A heat protection layer is coated around the extraction case, a cover board is arranged at the upper part and temperature in the tank body is constant. Water sealing is used at the top part of the mixing chamber of the extraction tank, thus organic gas evaporated from the extraction tank can be recovered.

The invention relates to a purpose and a method of an amido-contained neutral phosphine extracting agent for extracting and separating zirconium and/or hafnium. The amido-contained neutral phosphine extracting agent is expressed as the following formula I: FORMULA, wherein R1 and R2 are respectively and independently selected from C1-12 alkyl; R3 and R4 are respectively and independently selected from C1-3 alkyl and hydrogen; R5 and R6 are respectively and independently selected from C1-16 alkyl and hydrogen; and at most one of R5 and R6 is hydrogen. The amido-contained neutral phosphine extracting agent expressed as the formula I serves as a neutral phosphine extracting system for forming a main extracting agent to mix and extract with zirconium (IV) and/or hafnium (IV)-contained liquid; and then, such steps as extraction and reverse extraction are performed to respectively obtain zirconium or hafnium-contained solution or precipitates. The result shows that the purity of the finally obtained zirconium is higher than 99.99%, the content of hafnium in zirconium is lower than 80 ppm, in particular lower than 10 ppm; the purity of the obtained hafnium is higher than 99.0%, the content of zirconium in hafnium is lower than 0.1%; and the separation and the purification of zirconium and hafnium are effectively realized to achieve the use standards of atomic energy level zirconium and hafnium.

The invention relates to application of an amidogen-containing acid phosphine extraction agent (please see the descriptions for the following general formula I) to extraction and separation of cobaltand nickel, and a method, wherein R1 is selected from C1-C12 alkyl groups, and R2 is selected from C1-C14 alkyl groups. The method comprises the step that the amidogen-containing acid phosphine extraction agent with the general formula I is used for extracting and separating the nickel from a feed liquid containing the cobalt and the nickel. The method can extract the nickel preferentially, then the nickel and the cobalt are separated, and thus the method has the remarkable advantage in low-nickel and high-cobalt feed liquid separation. Additionally, the amidogen-containing acid phosphine extraction agent adopted by the application and the method can separate the cobalt from the nickel in all different acid media, has the good extraction and separation capacity, is simple in synthetic method, low in cost, stable in property and easy to industrialize, and has high industrial application value.

The invention discloses a method for preventing interfacial crud during vanadium-chromium extraction and separation, which is characterized in that during extraction, vanadium and chromium are extracted and separated by use of amine-type extractant in an organic phase containing the amine-type extractant and diluent composition; an aqueous phase adopts a leaching solution which contains vanadium-chromium slag and has acidity adjusted through dilute sulfuric acid or sodium hydroxide solution; and the method comprises the steps of mixing the aqueous phase with the organic phase in a separating funnel at a certain temperature, fixing the separating funnel on an oscillator, oscillating for a certain time, taking out and standing the separating funnel for demixing. The method has the advantagesof effectively preventing interfacial crud produced during vanadium-chromium extraction and separation, improving extraction equilibrium phase-separation speed, reducing the loss of organic phase andsaving operation cost.

The invention discloses a centrifugal extractor which comprises a motor, a flow deflector assembly, a rotary drum and a housing, wherein the flow deflector assembly comprises a flow deflector that is a centrosymmetric structural body, a baffle is arranged in the flow deflector and divides the flow deflector into an inlet chamber and an outlet chamber, a plurality of light-phase flow deflection holes distributed in a central symmetry manner through taking a rotation axis of the flow deflector as the center are formed in the baffle, inlet ends of the light phase flow deflection holes are communicated with the neighborhood of the center of the inlet chamber, outlet ends of the light phase flow deflection holes penetrates from the flow deflector and are communicated with a light phase outlet, a plurality of first heavy phase flow deflection holes communicated with the inlet chamber and the outlet chamber are formed in the baffle, and the first heavy phase flow deflection holes are distributed in a central symmetry manner through taking the rotation axis of the flow deflector as the center. The centrifugal extractor has a reasonable structural design, is convenient to process accurately by means of overall dynamic balance, and is good in dynamic balance; the flow deflector is less in vibration during the high-speed operation process, the two-phase separation interface is stably controlled, the extraction and separation effect is good, and meanwhile, the centrifugal extractor is also applicable to high-speed extraction and separation of materials difficult to separate.

The invention relates to a preparation method of a medicine preparation for treating the common cold in children. The granule for treating the common cold in children is prepared from fifteen herbal medicine materials including honeysuckle, phillyrin, fructus arctii, mint, schizonepetaspike, radix scutellariae, cape jasmine (fried), semen armeniacae amarum, radix platycodi, radix peucedani, radix angelicae dahuricae, hawthorn (burnt), medicated leaven (burnt), malt (burnt), rhizoma phragmitis and the like. The preparation is formed through cyclodextrin wrapping, granulating, granule finishing and subpackaging by means of the modern extraction separation technology of supercritical fluid extraction, ultrasonic extraction, micro-aperture filter membrane filtering and the like. The method is good in extraction separation effect, high in extraction efficiency, and capable of saving energy and cost; the wrapper preparation technology is adopted for the product, the volatilization of volatile oil type functional components is avoided, the bad smell of the product is covered, and the product quality and child patient medicine taking compliance are further improved.

The invention discloses a method for extracting high-purity cesium carbonate from pollucite. The method comprises steps as follows: 1, leaching of pollucite with hydrochloric acid; 2, impurity removalwith a precipitation method; 3, extraction and separation of caesium with a special extracting agent; 4, reextraction with carbon dioxide; 5, deep carbonization through charging of carbon dioxide during concentration of a reextraction solution; 6, recrystallization and purification of a crude product. Cerium in pollucite ore is leached with a hydrochloric acid method, a high-purity single ceriumproduct is obtained with an extraction method, the cerium leaching effect is good, the yield is high, and the extraction and separation effect is good. Carbon dioxide is used for reextraction, and carbon dioxide is charged for deep carbonization during concentration, so that the finally obtained cesium carbonate has the purity of 99.99% or above, cesium carbonate is easily converted into chlorate,sulfate, nitrate, formate and other products. The technological process is simple, few solid wastes are produced, no harmful metal elements are introduced, and thus, the method is safer and more environmentally friendly.

The invention discloses a fresh zanthoxylum oleoresin separation and purification process which comprises the following steps: after harvesting fresh zanthoxylum, carrying out cold pressing within two hours to obtain fresh zanthoxylum oleoresin, carrying out countercurrent extraction separation on the fresh zanthoxylum oleoresin through a liquid substance extraction and separation unit of a supercritical CO2 fluid dynamic countercurrent extraction and separation system, and after the countercurrent extraction separation is completed, obtaining fresh zanthoxylum resin from an extraction unit, and obtaining the fresh pepper essential oil through the separation unit. The extraction separation process is as follows: the feeding rate is 40kg/h, the CO2 flow rate is 600L/h, the extraction temperature is 45 DEG C, and the extraction pressure is 20MPa; the separation temperature I is 40 DEG C, the separation pressure I is 7.5 MPa, the separation temperature is 55 DEG C, and the separation pressure II is 4-6 MPa; the total yield of the fresh zanthoxylum oil resin product reaches 98.74%-99.19%, and the separation efficiency reaches 94.00%-99.24%; the volatile oil content of the obtained fresh zanthoxylum bungeanum essential oil can reach 101.94-128.93 ml/100g, and the numb degree is lower than 5 mg/g; and the content of volatile oil in the obtained fresh zanthoxylum bungeanum maxim resin is smaller than 5 ml/100 g, the hemp degree can reach 141.12 mg/g to 182.56 mg/g, and the hemp degree is increased to 42.59% to 53.17%. According to the process disclosed by the invention, the fresh Chinese prickly ash essential oil with high volatile oil content and the fresh Chinese prickly ash resin with high numb degree can be obtained, and the purification effect of the two products is remarkable.

The invention discloses a method for improving divalent metal extraction separation difference, and belongs to the technical field of extraction separation. The method comprises the following step that in a liquid-liquid extraction process, energy is supplied to a mixed solution containing two divalent metal ions and an organic phase in a manner of applying an external field; the external field is an ultrasonic external field or an electrostatic field, and the separation effect of any two kinds of metals is enhanced by adjusting ultrasonic power or electric field voltage; and the hydration degree difference of the two divalent metals is maximized in a specific energy range, and the extraction separation difference of the divalent metals is improved. According to the method, the extraction separation difference of the two divalent metals can be remarkably improved, the extraction separation efficiency of the two divalent metals is improved, and the extraction separation effect of the two divalent metals is improved. The method belongs to a novel non-saponification extraction technology, and is beneficial to solving the problem of environmental pollution in the heavy metal extraction and saponification link from the source. Compared with a traditional non-saponification treatment method, the method has the advantages of being high in extraction efficiency, short in extraction time, low in cost and small in energy consumption.