1048results about "Solvent extraction" patented technology

Provided are methods of extracting lithium from a lithium containing solution, as well as the resulting compositions. The method includes supplying a lithium containing solution to a lithium capture step, the lithium capture step being operable to capture lithium from the lithium salt containing solution. The method further includes recovering lithium from the lithium capture step to produce a lithium rich stream. In especially preferred methods, the lithium capture step is performed to increase the lithium to sodium ratio above at least 1:1. Optionally, the lithium rich stream can be purified to remove divalent ions and borate ions. The lithium rich stream is then concentrated by supplying the lithium rich stream to a reverse osmosis step to produce a concentrated lithium rich stream.

The utility model discloses plant extract extraction equipment, which belongs to the technical field of plant extraction and comprises an extraction barrel, a supporting plate is fixedly mounted on the upper surface of the extraction barrel, a fixing plate is fixedly mounted on the upper surface of the supporting plate, and a pressing component and a lifting component are arranged on the upper surface of the fixing plate; according to the device, the pressing assembly is arranged, the other toothed chain wheel drives the reciprocating lead screw to rotate under the action of the toothed chain, at the moment, the lower sliding sleeve can drive the pressing plate to move up and down in the filter barrel under the limitation of the air cylinder under the action of the thread, plants in the filter barrel can be extruded when the pressing plate moves downwards, and when the pressing plate moves upwards, the plants can be extruded by the reciprocating lead screw. When the plant is not extruded, the solvent can be absorbed, so that the plant is filled with the solvent, the plant is pressed while rotating in the plant soaking process, the full contact between the plant and the solvent is further ensured, the extraction quality of plant extraction is improved, the solvent waste can be avoided by pressing during discharging, and the purpose of saving resources is achieved.

This invention relates to the field of extraction machine technology, and specifically discloses an ultrasonic extraction machine that can improve infusion efficiency and increase concentration. The machine includes an extraction kettle, a base, and a control panel. The base includes a platform for placing the extraction kettle, and the top and the bottom of the extraction kettle are respectively equipped with a heating component and an ultrasonic component. Both the heating component and the ultrasonic component are connected to the control panel. The invention introduces an ultrasonic device during the heating process, and infuse through a dual structure of heating and ultrasonics, which can greatly improve the speed and increase the concentration of the extraction.

The utility model relates to a sealing structure of supercritical extraction equipment, which comprises a reaction kettle, the outer end of the reaction kettle is sleeved with an end cover, the bottom end of the end cover is fixedly connected with a fixing ring, the outer end of the fixing ring is provided with a sealing groove, the inner wall of the sealing groove is rotatably connected with a sealing ring, and the bottom end of the fixing ring is fixedly connected with a movable sealing assembly. According to the structure, the elastic corrugated sealing ring, the sealing ring and the movable sealing assembly are adopted to form multiple sealing, the movable sealing assembly is matched with the pressurizing ring through the first annular cavity and the second annular cavity, the sealing force is automatically adjusted through system pressure, heat-absorbing expansion liquid in the liquid storage ring can automatically compensate for a heat-expansion and cold-contraction gap, and meanwhile the sealing effect is improved. The piezoelectric ceramic stack is combined with the stirring rod, ultrasonic-mechanical coupling extraction is achieved, mass transfer efficiency is improved, crystals on a sealing component can be removed through the generated cavitation effect, and the ultrasonic-mechanical coupling extraction device has the advantages of being reliable in sealing, high in self-adaptability and the like.

The present disclosure relates to methods of removing brominated contaminants from polystyrene waste and recovering the brominated contaminants. The present disclosure further relates to methods of recycling polystyrene waste, wherein the recycling comprises retention of brominated contaminants or removal of contaminants. The present disclosure also relates to use of monocyclic aromatic benzenic solvents in the removal and / or recovery of brominated contaminants from polystyrene waste and in the recycling of polystyrene waste. Moreover, the present disclosure relates to use of the recovered brominated contaminants in the manufacture of polystyrene products such as insulation.

Extraction media for removal, concentration, and recovery of PEAS from contaminated materials in fluorous biphasic and / or multiphasic systems and related methods. The systems may include a fluorous functionalized solid support and a fluorous fractionation reactor permitting PFAS separation for targeted recovery. Extraction mediums comprise a polyelectrolyte with carbon dioxide / supercritical carbon dioxide (CO2 / SCCO2) with additional possible reagent modifiers that permit miscibility switches and compatibility with NSF / ANSI certifications. The extraction medium may include modifiers to enhance targeted recovery, such as F -solvents and / or organic carrier solvents. The disclosed systems and methods permit advantages such as 1 ) reduced sensitivity to PFAS-impacted phase co-contam inants such as competing anionic species and / or organic contaminants, 2) simple contact reactor retrofits, 3) enhanced removal of ultra- and / or short chain PFAS, 4) enhanced uniformity of matrix chemistry for downstream waste / wastewater management processes, and 5) the ability to recover valuable PFAS from waste / wastewater for processes that are dependent on their chemistry.

The utility model relates to an overflow device for a lithium battery diaphragm extraction tank, and belongs to the technical field of lithium battery diaphragm manufacturing equipment. The overflow device comprises an overflow groove arranged in an extraction groove and a drainage plate, an overflow channel of the overflow groove is communicated with a liquid outlet of the extraction groove, an overflow opening is formed in one side of the overflow groove, and the drainage plate is movably installed on the overflow opening in a sealed mode and used for adjusting the overflow flow of an extraction agent. According to the scheme provided by the utility model, the extraction agents in different area positions can be ensured to have consistent flow strokes through the overflow grooves, the phenomenon of unbalanced concentration of the extraction agents is avoided, and the extraction efficiency of the diaphragm can be improved.

The utility model provides a multi-stage extraction phase splitting device and laminated extraction equipment. The multi-stage extraction phase-splitting device comprises a phase-splitting barrel, a power mechanism and a multi-stage extraction mechanism, the split-phase barrel is provided with a split-phase cavity; the power mechanism is provided with a plurality of output assemblies; the multi-stage extraction mechanism is located in the split-phase cavity and nested with the split-phase barrel, the multi-stage extraction mechanism comprises a first hollow shaft sleeve, a second hollow shaft sleeve and a plurality of extraction barrels which are sequentially nested and relatively rotatably arranged, and each extraction barrel is provided with an extraction mixing cavity and a liquid outlet via hole which are communicated with each other; the extraction mixing cavities of every two adjacent extraction barrels are communicated through corresponding liquid outlet via holes, the extraction mixing cavity of the extraction barrel on the outermost side is communicated with the phase splitting cavity through the corresponding liquid outlet via hole, and the first hollow shaft sleeve and the second hollow shaft sleeve are both communicated with the extraction mixing cavity of the extraction barrel on the innermost side. According to the multi-stage extraction phase-splitting device, the area utilization rate of a plant site is relatively high.

Methods of extracting rare earth elements (REEs) from low-grade REE sources composed of clayey materials. In one aspect, the REE sources are the waste materials generated in the coal and kaolin clay industries during the courses of upgrading mined coal and kaolinite. The methods described herein include the steps of pre-concentrating REE-bearing minerals using physical separation methods to prepare high-grade feedstocks for the chemical extraction of high-value REEs and critical materials while minimizing both the capital and operating costs.

Provided is a method of recovering valuable materials that is a method of recovering lithium carbonate from a lithium-ion secondary battery, where the lithium carbonate has a boron content of less than 1 ppm and a calcium content of 100 ppm or less. The method includes a heat treatment step, a crushing and classification step, a slurry formation step, a wet magnetic separation step, an acid leaching step, a neutralization step, a neutralized cake solid-liquid separation step, a calcium carbonate crystallization step, a calcium carbonate solid-liquid separation step, and a calcium adsorption and removal step.

A curing roasting-water leaching-normal pressure acid leaching treatment method for a lateritic nickel ore, relating to the technical field of metal smelting. The treatment method comprises the following steps: uniformly mixing lateritic nickel ore dry powder, concentrated sulfuric acid and sodium fluoride, and then carrying out curing roasting in a reducing atmosphere to obtain a cured material; carrying out water leaching on the cured material, and filtering to obtain a water leaching solution and water leaching residues; and carrying out normal-pressure acid leaching on the water leaching residues, and filtering to obtain an acid leaching solution and acid leaching residues. The treatment method has the characteristics of controllable reaction, short reaction period, low reaction energy consumption and relatively low production cost; and compared with a conventional high-pressure acid leaching treatment process, the treatment method can significantly reduce the acid consumption, reduce the loss of valuable metals such as cobalt and nickel, increase the metal recovery rate and improve the economic benefit of production. The treatment method can reduce the corrosion of a strong oxidant to equipment, reduce the emission of a waste liquid in the leaching process and reduce the production cost while effectively guaranteeing the cobalt-nickel leaching rate.

The utility model provides a purification device for producing high-purity hafnium oxide, which belongs to the technical field of chemical purification devices and comprises an extraction tank, a base, a tank cover, an exhaust pipe, a drain pipe, a water storage pipe, a water storage box, a connecting pipe, a partition plate, a reaction barrel, a water storage barrel, a communicating pipe and a water outlet pipe. Due to the fact that the density of water is lower than that of a liquid mixture of the industrial waste liquid and the extraction agent, water is injected into the reaction barrel after the extraction reaction is completed, water can float above the liquid mixture, water in the reaction barrel and water in the water storage barrel are located at the same liquid level according to the liquid level difference principle, water can enter the water storage barrel through the communicating pipe, and therefore the extraction reaction is completed. The liquid mixture is isolated in the reaction barrel by the filter screen in the communicating pipe, and water in the liquid mixture in the reaction barrel is gradually discharged, so that the liquid mixture generated by extraction is separated from the water, the separation speed is greatly increased, and the production cost is reduced.

The invention discloses a separation and purification method of vanadium-containing tungstate. The method comprises the following steps: providing a vanadium-containing tungstate aqueous solution; providing an extraction liquid, wherein the extraction liquid comprises a sulfuric acid type quaternary ammonium salt extraction agent, a modifier and an organic solvent; mixing the vanadium-containing tungstate aqueous solution with the extraction liquid, and performing first extraction to obtain a first extraction phase and a first raffinate phase; providing strip liquor, wherein the strip liquor comprises alkali metal sulfate and alkali metal hydroxide; mixing the first extraction phase with the strip liquor, and carrying out first reverse extraction to obtain an alkali metal vanadate solution; and carrying out the same extraction and reverse extraction method on the first raffinate phase to obtain an alkali metal tungstate radical solution, thereby realizing respective separation and purification of vanadate radicals and tungstate radicals.

According to the present invention there is provided processes for the recovery of lithium from end-of-life lithium-ion batteries and battery matter. A representative process resides in a process for separating lithium from lithium ion batteries before undertaking hydrometallurgical or pyrometallurgical processing, the process comprising: providing a black mass (BM) or shredded battery material (SBM) that includes cation and anion components; commixing the BM or SBM with an admixture that includes water and supercritical carbon dioxide; and separating an aqueous leachate and a lithium-leached BM or SBM, where the aqueous leachate includes a lithium carbonate and / or bicarbonate.

A method for recycling and treating an electrolytic solution of a lithium ion battery, comprise cooling a fully discharged lithium ion battery below a freezing point of the electrolytic solution, disa

A method and system for converting copper cyanide to copper oxide is provided. The method includes contacting a copper cyanide solution with an acidic solution in a precipitation tank under reaction conditions sufficient to produce a copper cyanide slurry, removing the copper cyanide slurry from the precipitation tank, separating solid copper cyanide from the copper cyanide slurry in a first separation device, removing the solid copper cyanide from the first separation device, contacting the solid copper cyanide with a sodium hydroxide solution in a production tank under reaction conditions sufficient to produce a copper oxide slurry, removing the copper oxide slurry from the production tank, separating solid copper oxide from the copper oxide slurry in a second separation device, and removing from the second separation device any residual sodium hydroxide not reacted during the process of contacting the solid copper cyanide with the sodium hydroxide solution in the production tank.

A process (1000) for producing a lithium salt (190) by treating a particulate lithium containing material containing lithium bearing minerals comprising pressure leaching (20) the lithium containing material with concentrated sulphuric acid to form a pregnant solution (22) containing lithium sulphate as a source of lithium for a selected lithium salt for production (190) and impurities; removing the impurities in a series of steps (30, 40, 50, 60, 70) including removal (70) of at least one sulphate compound contained in the pregnant solution, said at least one sulphate compound containing at least one of potassium and sodium; and producing the selected lithium salt (190) following impurity removal (30, 40, 50, 60, 70).

A process for purifying a regenerated polymer to a purer polymer is disclosed. In embodiments of the invention, the method involves obtaining a regenerated polymer, leaching various contaminants with a leaching solvent to produce a leached polymer, extracting the leached polymer with a first fluid solvent to produce an extracted polymer, and then dissolving the extracted polymer in a solvent to produce a first solution comprising a dissolved polymer. The first solution is settled and then filtered. A purer polymer is separated from the resulting solution.

There is disclosed a method for treatment of an aqueous lithium salt-containing solution in a direct lithium extraction process comprising lithium-selective media, wherein the aqueous lithium salt-containing solution comprises one or more foulants, the method comprising the steps of adjusting the oxidative-reductive potential and / or pH of the aqueous lithium salt-containing solution to render the one or more foulants inert to the lithium-selective media; and removing the one or more inert foulants from the aqueous lithium salt-containing solution prior to addition of the aqueous lithium salt-containing solution to the lithium-selective media in a direct lithium extraction process.

A versatile and efficient method is described for recovering a high-purity material (target) or multiple materials (targets) from a complex mixture in batch or continuous chromatography systems. If perfectly selective sorbents are available for the targets, constant-pattern batch capture methods in tandem or tandem carousel capture methods are preferred. If perfectly selective sorbents for the targets are unavailable, the batch capture, carousel capture, isocratic SMB, non-isocratic SMB, and isotachic displacement methods can be deployed in tandem or in parallel to produce high purity products with high yields and high productivity.

An electronic waste (E-waste) recycling process and composite article or material using the E-waste. E-waste, for example including printed circuit boards (PCBs) and / or electronic components (ECs) such as integrated circuit chips, is size reduced, processed with one or more chemicals to remove base metals, precious metals, and chemicals of concern, and dried to provide a E-waste powder. The E-waste powder, may be used to form an E-waste composite article or material.

The invention discloses a method for producing monopotassium phosphate by organic extraction of crude phosphoric acid, which comprises the following steps: carrying out desulfurization and defluorination on wet-process crude phosphoric acid, then removing heavy metals, adding the heavy metal removed crude phosphoric acid and extract liquor into a crude phosphoric acid extraction clarification tank, carrying out crude phosphoric acid extraction reaction, and carrying out phase separation to obtain an extraction phase and raffinate acid; washing the extract phase with purified phosphoric acid, feeding into a homogeneous pre-reaction tank, adding a potassium chloride solution, fully and uniformly mixing, feeding into a hydrochloric acid extraction reaction clarification tank for phase separation to obtain monopotassium phosphate slurry and a hydrochloric acid-containing extract phase, and performing solid-liquid separation on the monopotassium phosphate slurry to obtain monopotassium phosphate clear liquid; concentrating and crystallizing the monopotassium phosphate clear liquid to obtain a monopotassium phosphate product; the extract liquor is an alkylamine type extractant added with a diluent. The method is high in comprehensive economic value, the used extraction agent is excellent in comprehensive performance, and the prepared monopotassium phosphate product is good in quality.

Provided herein are assemblies and methods for lithium, magnesium, and / or calcium extraction. In various embodiments, an assembly includes a leaching tank defining an interior chamber having one or more inlets and one or more outlets. The leaching tank is configured to receive through the one or more inlets a mixture comprising a substrate having one or more target metals and a solvent. The assembly further includes a sonic probe positioned within the interior chamber, suspended in the solution, and / or a sonic plate configured to provide sonic energy to the mixture.

A filter tip (2), an adapter (1), and a micro-volume ultrafiltration bottle. The filter tip (2) comprises a tubular structure penetrating up and down. An inner side wall (2-1) of the tubular structure gradually tapers from top to bottom towards the center line to form an inverted conical inner cavity structure. A bottom portion of the inverted conical inner cavity structure is a conical hole (2-3). A lower end of the tubular structure is provided with a filter joint (2-2), and a bottom flow guide groove (2-5) or a bottom flow guide region (2-6) is arranged between the conical hole (2-3) and the filter joint (2-2). The filter tip (2) is connected to an inner side wall of a lower end of the adapter (1). The micro-volume ultrafiltration bottle comprises a bottle body (3) and further comprises the adapter (1) disposed at a bottle mouth and extending downward into the bottle body (3), and the filter tip (2) is connected to a bottom portion of the adapter (1). The filter tip (2), the adapter (1), and the micro-volume ultrafiltration bottle can implement filtration or extraction of a micro-amount of a liquid sample and can directly draw the micro-amount of a liquid sample for analysis.

The present invention relates to an improved process for the recovery of valuables in the form of graphitic carbon fractions, cryolite, sodium fluoride, sodium carbonate / sulphate, and mixed hydroxides from spent anode dust and first-cut spent pot lining materials obtained from electrolytic reduction cells which are used to produce aluminium metal. The recovered graphite has various applications in electrostatic charge dissipative coating, Li-Battery and so on.

To provide a marigold extract, and application thereof to preparation of an anti-prostatic cancer medicine.SOLUTION: The present invention relates to a medical technical field, particularly application of marigold extract and preparation thereof into an anti-prostatic cancer medicine, where the extract uses ethyl acetate as an extraction agent, is obtained by extracting active ingredients of roots or stems of marigold, marigold extract suppresses survival and proliferation of a tumor cell by inducing pyrokinesis of a cell, can suppress progress of a tumor, and can be used for preventing prostatic cancer and / or preparing a therapeutic drug.SELECTED DRAWING: Figure 1

The present invention provides a process for preparing a high-purity nickel sulphate solution, comprising the steps of: i. providing an aqueous feed solution comprising nickel. cobalt, calcium and magnesium: ii. extracting cobalt, calcium, and partly magnesium from said aqueous feed solution using a first solvent comprising a first alkylphosphorus-based acidic extractant, thereby obtaining an aqueous raffinate comprising nickel and magnesium: iii. extracting magnesium from said aqueous raffinate solution comprising nickel and magnesium using a second solvent comprising a second alkylphosphorus-based acidic extractant, thereby obtaining a high-purity aqueous nickel sulphate solution comprising nickel and magnesium: iv. stripping the first loaded solvent comprising cobalt, calcium and magnesium with an aqueous solution comprising a mineral acid.

The present invention discloses a novel method of isolating pure bakuchiol, substantially free of furanocoumarins (psoralen and isopsoralen) from the seeds of Psoralea sp using a combination of processes that include supercritical fluid extraction, high vacuum distillation and column purification. The invention also disclose compositions comprising bakuchiol that is free of furanocoumarins.

A method for extracting oils from sauces while simultaneously determining fat content, peroxide value, and acid value is disclosed. The method is simple to operate and requires uncomplicated equipment. It features a short testing cycle and high efficiency, and suitable for the extraction of oils from oil-rich emulsified encapsulated sauces (such as salad dressings) with high extraction rates. The determination of peroxide value and acid value is not affected by pretreatment methods, ensuring more representative results. It addresses the challenges of difficult oil separation and extraction from oil-rich emulsified encapsulated sauces and solves significant issues encountered when using acid hydrolysis and alkaline hydrolysis methods to determine peroxide value and acid value. It enables the simultaneous monitoring of three physicochemical indicators (fat content, peroxide value, and acid value). This high-efficiency method is particularly suitable for tracking and monitoring during the production process, thereby enhancing production efficiency and reducing production costs.

The utility model relates to the technical field of stimulant extraction, discloses a food-borne stimulant extraction tube, and solves the problem that the purity of an extracting solution is influenced due to the fact that the filtering effect is reduced after a filtering structure is used for a long time. A food-borne stimulant extraction tube comprises a glass tube body, a filter assembly used for improving the separation effect is movably arranged in the glass tube body, in the extraction process, a filter plate facilitates separation of an extracting agent adsorbing impurities from an extracting solution, and the extracting solution flows into the bottom of the glass tube body through filter holes; when the filter plate needs to be cleaned, a first fixing block is pulled upwards, and the first fixing block moves upwards to drive a connecting column to move upwards, so that a connecting ring is driven to slide along the inner wall of the glass tube body, the connecting ring is pulled out of the glass tube body, and the filter plate is convenient to clean.