282 results about "Salt lake" patented technology

The invention discloses a steam condensation type adsorption tower device system for extracting lithium from plateau salt lake brine, and belongs to the technical field of salt lake lithium extraction processes. A condenser of a multi-effect evaporation system and a traditional adsorption tower are coupled into a whole, the optimal temperature in the salt lake brine lithium adsorption process is achieved, and the lithium ion adsorption efficiency of the adsorption tower is improved; latent heat of vaporization released by condensation of secondary steam generated in a last-effect evaporator in a multi-flow tube bundle directly heats salt lake brine for adsorption and desorption processes, so that the adsorption rate of lithium in the salt lake brine is increased, fresh water required by a subsequent desorption process can be preheated, and the energy consumption cost of lithium extraction from the salt lake is reduced; the temperatures of an adsorbent and salt lake brine at different positions in the adsorption tower are optimized by reasonably arranging the flow of the condensation heat exchange tube bundle, the temperature of the adsorbent and the salt lake brine is gradually increased from top to bottom in the adsorption tower, and the temperature in the adsorption tower is increased from top to bottom to compensate the reduction of the adsorption rate caused by the reduction of the lithium ion concentration.

The invention discloses a salt lake brine mining method and system for hydraulically gradient-driven water replenishing and ore dissolving of a sedimentation funnel, and relates to the technical field of salt lake mineral resource development, the method comprises the following steps: S1, collecting water level data of a sedimentation funnel area, calculating gradient distribution, dividing functional areas, and generating zoning parameters; s2, based on the partition parameters, a water injection well network is arranged in the gradient direction, water injection parameters are determined according to the water level difference, and a well network scheme is generated; s3, based on a well pattern scheme, injecting the proportioning solvent into an ore bed in a layered manner to form a directional seepage field, and generating solute transport data; s4, on the basis of solute transport data, enriched brine is extracted in the collection area, the concentration is monitored, and brine parameters are generated; and S5, based on the deviation between the brine parameter and the target value, calculating the regulation amount, adjusting the injection-production parameter to maintain dynamic balance, and outputting the salt lake brine with the target concentration. By regulating and controlling the hydraulic gradient, the form of the settlement funnel is stabilized, the phenomena of stratum disturbance and ground settlement are reduced, and the ecological risk is reduced.

The invention discloses a salt lake carbonate rock multi-parameter quantitative classification and reservoir evaluation method, and relates to the technical field of oil-gas exploration. The method comprises the following steps: selecting a key well in an exploration block, collecting a plurality of salt lake carbonate rock samples, preparing an analysis sample under an anhydrous condition, quantitatively measuring a salinity parameter, a mixing index and a diagenesis strength parameter by utilizing the analysis sample, and determining a salinity code, a mixing code and a diagenesis phase code. And naming the salt lake carbonate rock based on the salinity code, the mixed product code and the lithogenous phase code, directly evaluating the salt lake carbonate rock reservoir according to a naming result, and performing single well comprehensive evaluation on the salt lake carbonate rock reservoir. According to the method, the influence of salinity, mixed accumulation and diagenesis strength on formation and evolution of the salt lake carbonate rocks is fully considered, accurate division of the types of the salt lake carbonate rocks is achieved, the reservoir naming result is directly associated with reservoir evaluation, and technical support is provided for standardized evaluation of the salt lake carbonate reservoir.

The invention discloses an ion separation solar evaporator and a preparation method thereof, and belongs to the technical field of magnesium-lithium separation. The ion separation solar evaporator comprises a transmission channel made of a two-dimensional layered material, an ion separation nanofiltration membrane, a capillary layer made of hydrogel and a water evaporation area made of a two-dimensional layered material composite surface plasmon material which are sequentially stacked, and a salt crystallization region made of a two-dimensional layered material composite rheology modifier is arranged around the water evaporation region. According to the invention, efficient selective separation of magnesium and lithium in salt lake brine / seawater is realized through a solar-driven nanofiltration membrane separation technology, the bottleneck of high energy consumption of a traditional lithium extraction process based on a nanofiltration membrane is broken through, and the salt lake brine does not need to be pretreated. In addition, lithium-containing salt can be directly collected, the subsequent treatment process is greatly simplified, and an environment-friendly, economical and efficient solution is provided for development of salt lake lithium resources.

The invention discloses an adsorption / desorption device for salt lake adsorption and lithium extraction and application thereof.The adsorption / desorption device for salt lake adsorption and lithium extraction comprises an adsorption and desorption column, an adsorbent containing area used for containing an adsorbent is arranged in the adsorption and desorption column, and a positive electrode and a negative electrode are oppositely arranged in the adsorbent containing area; the positive electrode and the negative electrode are connected through a direct-current power supply capable of reversing poles, a variable electric field can be formed during pole reversing, and the variable electric field can drive lithium ions to migrate and accelerate desorption of the lithium ions from an adsorbent, so that the lithium ion desorption efficiency is favorably improved, the concentration of the lithium ions in a desorption solution is higher, fresh water is saved, and the service life of the lithium ion battery is prolonged. And time and energy consumption are saved for subsequent concentration of lithium ions. The adsorption / desorption device for adsorbing and extracting lithium in the salt lake is simple in process flow and simple and convenient to operate, can effectively improve the desorption efficiency and save working hours, energy and fresh water, and has practical significance on utilization of lithium resources in the salt lake.

The utility model discloses a salt lake lithium extraction adsorbent scrubbing system which comprises a scrubbing tower and an adsorption tower, and a sunken water distributor is arranged at the bottom end in the scrubbing tower; the middle position of the bottom of the concave water distributor penetrates through the bottom of the scrubbing tower and is connected with a runner opening; a water replenishing opening is formed in the middle of the bottom of the scrubbing tower; two feed ports are formed in the positions, close to the water inlet, of one side of the scrubbing tower, and a water outlet is formed in the position, close to the top, of one side of the scrubbing tower; the flow channel port is sequentially connected with a pneumatic valve j, a diaphragm pump B and an adsorption column through a pipeline; according to the system, crushed resin particles and impurities are effectively removed by cleaning an adsorbent, so that the adsorption performance and the flowability of a resin bed layer are recovered, and it is ensured that the resin bed layer is always in the optimal working state. In the process of scrubbing the adsorbent, the adsorbent does not need to be manually carried except for necessary adsorption tower pipeline connection operation, so that the scrubbing efficiency is remarkably improved.

The invention relates to the technical field of lithium resource development, in particular to a ball milling-ultrasonic green leaching method for salt lake sedimentary clay lithium ore. The invention discloses a ball milling-ultrasonic green leaching method for salt lake sedimentary clay lithium ore. The method comprises the following steps: S1, primarily crushing the ore and then drying; s2, the dried minerals are subjected to plasma ball milling activation treatment; and S3, the minerals subjected to plasma ball milling activation are soaked in water, ultrasonic leaching is conducted, filtering is conducted after leaching is completed, and supernate, namely a leaching solution, is obtained. According to the ball milling-ultrasonic green leaching method for the salt lake sedimentary clay lithium ore, high-temperature roasting is not needed, the production temperature of the whole process of the technology does not exceed 100 DEG C, energy consumption is low, no acid or alkali is involved, and efficient selective leaching of lithium is achieved through water leaching.

The present application provides a method for extracting lithium from salt lakes. The method comprises the following steps: (1) subjecting concentrated brine to ammonia vapor magnesium precipitation treatment to obtain a magnesium-removed filtrate and filter residue; (2) mixing the filter residue with hydrobromic acid, adjusting the pH to precipitate boric acid, and performing solid-liquid separation to obtain a filtrate and boric acid; (3) evaporating and concentrating the filtrate obtained in step (2), performing aeration treatment after drying treatment, and performing water immersion separation treatment to obtain a lithium-rich solution and magnesium oxide; (4) mixing the lithium-rich solution and lithium carbonate to perform a solid-phase transformation reaction, and filtering to obtain a purified lithium salt solution and calcium carbonate. The method of the present application can separate boron, magnesium, and calcium-lithium in one step, and further calcium removal can separate calcium and lithium, which is beneficial to obtaining high-purity lithium carbonate and reducing lithium loss caused by the adsorption of lithium by magnesium hydroxide colloid.

A new method for extracting lithium from salt lake brine, comprising the following steps: a salt lake old brine raw material, desorption liquid, low-magnesium water, and adsorption tail liquid pass through an old brine feeding pipe (2), a desorption liquid feeding pipe (4), a low-magnesium water top desorption liquid feeding pipe (3), and an adsorption tail liquid top desorption liquid feeding pipe (11), respectively, which are located above and below a rotary disc of a multi-way valve system (1); and after respectively entering corresponding adsorption columns (6) by means of a duct and channel within the multi-way valve system (1), the entire process procedure is completed from an adsorption tail liquid discharge pipe (7), a qualified desorption liquid discharge pipe (10), a lithium-containing old brine discharge pipe (8), and an adsorption tail liquid top desorption liquid discharge pipe (5); and the adsorption columns (6) are connected in series or in parallel by means of channels located in the multi-way valve system (1). The feature in which a multi-way valve device is simple and easy to operate is utilized, and in comparison with a fixed bed operating system, the utilization rate of lithium adsorbent may be increased by over 20%, the utilization efficiency of the lithium adsorbent may be increased by over 40%, and production costs may be reduced by 30-50%. Therefore, the stability of a qualified desorption liquid is improved, stable production is guaranteed, and year-round constant operation may be achieved.

The invention discloses a salicylic acid anchored hydrotalcite-bentonite composite material based on salt lake bischofite as well as a preparation method and application thereof, and belongs to the technical field of preparation and application of heavy metal adsorbents. According to the invention, salt lake bischofite is used as a magnesium source, is purified and then is mixed with aluminum chloride hexahydrate, salicylic acid, bentonite and an alkaline reagent, and the composite material is prepared through a heating and pressurizing reaction. According to the material, bentonite serves as a substrate, magnesium-aluminum hydrotalcite grows on the surface, carboxyl, phenolic hydroxyl and other functional groups are anchored through flocculation and electrostatic adsorption, and the complexing capacity on heavy metal ions is synergistically enhanced. Compared with traditional hydrotalcite, the composite material has higher specific surface area, larger adsorption capacity and regeneration stability, and can efficiently remove lead ion pollution in water. The method realizes high-value utilization of salt lake magnesium resources, provides a novel adsorption material for heavy metal treatment, and has environmental protection benefits and application values.

The invention provides a salt lake lithium extraction system and method.The system comprises a multi-stage counter-current extraction mechanism, a washing mechanism and a reverse extraction mechanism which are sequentially arranged in the flow direction of an extraction agent, and the multi-stage counter-current extraction mechanism comprises two or more than two sets of multi-stage extraction tanks which are arranged in parallel; each group of multi-stage extraction tanks comprises a first-stage extraction tank, a second-stage extraction tank,..., and an n-stage extraction tank which are connected in series, each n-stage extraction tank is connected with a storage tank for brine to be extracted, and each first-stage extraction tank is connected with an extraction agent storage tank; each n-stage extraction tank is connected with a washing mechanism, a washing liquid input pipe is arranged on one side, far away from the extraction tanks, of the washing mechanism, and the other side, far away from the extraction tanks, of the washing mechanism is further connected with a reverse extraction mechanism; a back extraction liquid input pipe is arranged on one side, far away from the washing mechanism, of the back extraction mechanism, and a high-lithium liquid storage tank is arranged on one side, close to the washing mechanism, of the back extraction mechanism; according to the method, the defects of slow phase splitting and long time consumption of the extraction section are reasonably optimized, and the extraction efficiency is improved.

The invention discloses a phenazine-based electrochemical electrode material as well as a preparation method and application thereof. The phenazine-based electrochemical electrode material is an organic small molecule material or an organic polymer which contains nitrogen, has a conjugated structure and can be subjected to electrochemical oxidation-reduction reaction. The phenazine-based electrochemical electrode material disclosed by the invention can be applied to selective separation and extraction of ions, can be used for selective extraction and separation of target ions in a multi-ion complex solution, and can be used for extracting valuable element ions step by step at high performance; the extraction method has the advantages of high ion extraction capacity, low cost, simple process and high element separation and extraction efficiency, is environment-friendly, can realize efficient development and comprehensive utilization in the fields of salt lake resources, marine resources, industrial sewage and wastewater recycling, seawater desalination and the like, and has a better industrialization prospect.

The invention relates to the technical field of lithium extraction from salt lakes, in particular to a lithium iron phosphate-composite lithium manganate composite material for lithium extraction from high-altitude salt lakes and a preparation method of the lithium iron phosphate-composite lithium manganate composite material. The composite material comprises lithium iron phosphate and composite lithium manganate, wherein the composite lithium manganate comprises spinel type lithium manganate and layered lithium manganate. According to the lithium iron phosphate-composite lithium manganate composite material provided by the invention, the adopted composite lithium manganate has a three-dimensional ion conduction channel structure of spinel type lithium manganate and high specific capacity of layered lithium manganate at the same time, and the problem that a single lithium iron phosphate material is relatively poor in conductivity and ion conductivity is solved. And meanwhile, a single type of lithium manganate additive is also avoided, and the lithium extraction efficiency and the lithium extraction capacity of lithium extraction of the high-altitude salt lake are comprehensively improved.

The invention relates to the technical field of salt lake leakage, in particular to a salt lake leakage monitoring method based on a boron isotope tracer. The monitoring method specifically comprises the following steps: screening a tracer agent; selecting a detection instrument; forming an injection well in the salt lake detection area and forming a plurality of monitoring wells along the periphery of the injection well; a tracer agent is put into the injection well, sampling detection and data analysis are conducted on the monitoring well, and the position of a leakage point is determined. The monitoring method provided by the invention is beneficial to mastering the leakage flowing direction of the salt lake and identifying the specific position of the leakage point.

The present invention relates to a salt lake lithium extraction process involving low water consumption and a device, and belongs to the technical field of salt lake lithium extraction. The present technical solution comprises performing pretreatment on wastewater in a process, which comprises impurity removal and concentration; and then evaporating water in the wastewater by means of evaporation, so as to obtain recyclable water. In this way, water in wastewater is effectively recycled, thus reducing the consumption of water resources.

The invention discloses a device, a material and a method for efficiently extracting uranium from salt lake water flow, and particularly relates to a method for converting mechanical energy into electrochemical energy in a solid-liquid interface contact separation process of the water flow on the surface of a composite material by utilizing high-low fall flow of uranium-containing water such as salt lake water. Free uranyl ions are spontaneously reduced and deposited on a uranium collection substrate with a high specific surface area. The method effectively solves the problems caused by low efficiency, high energy consumption and use of chemical reagents in a traditional method, has good economic benefits and environmental friendliness, and is a uranium extraction strategy which is more efficient, environmentally friendly and low in cost.

The invention discloses a salt lake rock core permeation sample chamber for testing the permeation coefficient of a salt lake rock core sample, the salt lake rock core permeation sample chamber comprises an upper cover (2), an organic glass barrel (3) and a lower cover (4), a base (8), a latex film (11) and a pressurizing cap (7) are sequentially arranged above the lower cover (4) from bottom to top, and the latex film (11) sleeves the base (8) and the pressurizing cap (7), is tightened by a rubber band and is fastened by a hoop straining ring; and the lower cover (4) is provided with a water inlet and outlet valve interface (13) which is connected with a confining pressure controller and is used for controlling the peripheral annular pressure of the latex film (11), and foot pads (5) for supporting the sample chamber. A salt lake rock core sample is put into the latex film and then put into the sample chamber, a certain annular pressure is given to the sample through the water inlet and outlet valve interface, lateral seepage is prevented by controlling the annular pressure, and the situation that the permeability coefficient test result is unreliable due to the fact that the original structure state of the sample is changed under the action of large external force is prevented.

The invention belongs to the technical field of membrane separation, and particularly relates to a preparation method of a self-supporting polypyrrole composite membrane and application of the self-supporting polypyrrole composite membrane in extraction of lithium from a salt lake. A polyoxazole polyhydrazide copolymer is used as a porous self-supporting base membrane, and a continuous polypyrrole functional layer is constructed on the surface of the base membrane through in-situ oxidative polymerization. A dynamic charge screening microenvironment is formed by a weak positive electricity characteristic and a highly conjugated structure in a polypyrrole molecular chain, and the interception efficiency on high-charge-density magnesium ions is enhanced through electrostatic interaction; and meanwhile, the rigid pore structure realizes selective permeation of lithium ions through size screening. Under the assistance of an external electric field, the polypyrrole layer shows excellent magnesium-lithium separation performance, lithium ions are enriched and recycled from the salt lake brine with the high Mg < 2 + > / Li < + > molar ratio, and the industrial bottleneck that ion flux and selectivity are difficult to consider at the same time in a traditional separation technology is solved.

The invention discloses a roasting system for leaching and lithium extraction of salt lake deposited clay type lithium ores, and belongs to the technical field of salt lake resource development and lithium extraction, the roasting system comprises a rack, the rack is provided with a preheating mechanism, a rotary driving mechanism and a roasting box, the preheating mechanism is used for preheating the leached salt lake deposited clay type lithium ores, and the rotary driving mechanism is used for driving the roasting box to rotate; the preheating mechanism is composed of a charging barrel, a lower conical barrel, a communicating pipe and a preheating box, a first rotating guide ring is arranged at the lower end of the charging barrel, and a first guide ring cavity is formed in an upper cavity opening of the lower conical barrel; the lower conical barrel adopts a rotating mode, and a matching structure of a first rotating guide ring at the lower end of the matched charging barrel and a first guide ring cavity at an upper cavity opening of the lower conical barrel is adopted, so that continuous circumferential shearing force and radial pushing force can be generated on the lithium ore which is high in viscosity and easy to cake after leaching, and the lithium ore is turned over along the inner wall of the conical barrel through rotation; local accumulation dead angles are avoided, and the problem that materials are bonded and blocked in a traditional fixing structure is solved.

The application relates to the technical field of brine refining equipment, and discloses a brine refining equipment for lithium extraction from salt lakes, which comprises a precipitation tank, the bottom of the precipitation tank is fixedly connected with a support frame one, and the side wall of the precipitation tank is fixedly connected with a fixing frame. In view of the problem that the excessively long precipitation distance leads to excessively long precipitation time, five groups of collecting assemblies are arranged in the equipment, the five groups of collecting assemblies divide the precipitation tank into six layers stacked up and down, when the brine enters the inside of the precipitation tank and is uniformly distributed in the six layers, the brine in the inside of the precipitation tank will be precipitated, and the precipitate will penetrate through the turbine plate and accumulate on the top of the inclined plate. In this process, the precipitate will be precipitated at the position of the corresponding inclined plate. Through the design that the six layers simultaneously precipitate, the single precipitation time of the precipitation tank is shortened, and the single precipitation time of the equipment is greatly reduced.

The invention provides a multi-electric-layer nanofiltration membrane for extracting lithium from a salt lake and a preparation method of the multi-electric-layer nanofiltration membrane, and belongs to the technical field of nanofiltration membranes. Firstly, polysulfone and dimethylformamide are put into a mixing kettle, and a membrane casting solution is obtained; coating a non-woven fabric with the membrane casting solution, and then preparing a non-woven fabric and polysulfone combined base membrane through phase inversion; soaking the base membrane in an isopropanol solution, and removing redundant solution on the surface by using a rubber roller; the preparation method comprises the following steps: coating the surface of a base membrane with a solution of a water phase 2, then removing the redundant water phase on the surface, then coating the surface with an oil phase 2, drying a membrane, sequentially and repeatedly coating the membrane with the water phase 2 and the oil phase 2 for multiple times to obtain a nanofiltration membrane with multiple middle layers, then coating the membrane with a solution of a water phase 1, removing the redundant water phase on the surface, then coating the surface with an oil phase 1, and drying to obtain the nanofiltration membrane with multiple electric layers. According to the invention, a plurality of middle layers are positively charged, so that the electrostatic repulsion effect on magnesium ions can be fully exerted, and the magnesium ion interception is obviously improved.

The invention belongs to the technical field of new energy, and particularly relates to a method and a device for extracting lithium carbonate from a salt lake. The method comprises the following steps: S1, performing selective electrodialysis on the salt lake brine to obtain treated brine; s2, collecting the treated brine, adjusting the pH value, and performing ultrafiltration to obtain filtrate; s3, collecting the filtrate, and adsorbing and desorbing the filtrate by adopting same-valence separation resin to obtain a desorption solution; s4, collecting the desorption solution, performing high-pressure reverse osmosis treatment and bipolar membrane treatment to obtain lithium hydroxide, and reacting the lithium hydroxide with carbon dioxide to obtain lithium carbonate; high-pressure reverse osmosis treatment and bipolar membrane treatment cooperate with each other, so that complete recovery of lithium and pure water in a desorption solution is realized, and reutilization and zero emission of water resources are realized; carbon dioxide released by the carbon dioxide capturing and releasing unit reacts with lithium ions, so that sodium ion impurities are prevented from being introduced into a product by adopting sodium carbonate, carbon dioxide in the atmosphere is directly utilized, the cost is reduced, and energy conservation and emission reduction are realized.

The invention belongs to the technical field of adsorption materials for extracting lithium from salt lake brine, and provides a ternary vanadium-titanium-niobium lithium ion sieve based on a biomimetic mineralization template and a lithium extraction device and a lithium extraction process thereof aiming at the bottleneck problems of low adsorption capacity, poor magnesium-lithium selectivity, short cycle life and the like of the existing titanium-based lithium ion sieve. The lithium ion sieve material with an anatase-brookite mixed crystal structure and three-stage through pore channels is constructed by coupling vanadium and niobium elements with a multi-stage atmosphere regulation gradient calcination process method. According to the technology, the oxygen vacancy concentration, the ion diffusion kinetics and the structural stability of the material are remarkably improved. The invention provides a novel adsorbing material solution with high adsorbability, optimization and long circularity for extracting lithium from salt lake brine with high magnesium-lithium ratio, and has important application value in the fields of promoting green and efficient development of salt lake lithium resources and new energy strategic resource recovery.

The invention provides a salt lake resource dynamic monitoring system based on a Kriging interpolation method. Comprising a drilling deployment module, a resource reserve initial exploration module, a multi-source data acquisition and preprocessing module, a spatial interpolation algorithm module and a three-dimensional visual modeling and rendering module. According to the method, the Kriging interpolation method and the Co-Kriging interpolation method are combined, the main and auxiliary variable spatial correlation is utilized to improve the reserve estimation accuracy, the limitation of dependence on a large number of samples traditionally is broken through, center encryption and peripheral control drill hole arrangement is combined with uncertainty evaluation to optimize the exploration cost, comprehensive evaluation is supported by a small number of samples, the model is dynamically updated by the system monthly, and the exploration efficiency is improved. The problem of traditional data lag is solved, the resource dynamic state is visually presented through the three-dimensional visual modeling and rendering module, a basis is provided for decision making, the resource utilization rate is improved, and premature exhaustion is avoided.

The invention belongs to the technical field of salt lake resource development and rare metal recovery, and discloses a fibrous rubidium adsorbent as well as a preparation method and application thereof, a metal-based Prussian blue analogue spinning solution is synthesized in a non-aqueous system through a one-pot method, and the fibrous rubidium adsorbent is directly prepared through wet spinning. The preparation of the powder adsorbent and the molding of the composite material are integrated, so that the process is simplified, and the problem of powder agglomeration is avoided. The prepared fibrous rubidium adsorbent has the rubidium ion adsorption capacity of 248.73 mg / L, achieves adsorption equilibrium within 7 min, is suitable for industrially recovering rubidium from high-salinity salt lake brine, and has remarkable economic and environmental benefits.

The utility model discloses a salt lake lithium extraction crystallization matrix assembly, relates to the field of salt lake lithium extraction process equipment, and can solve the problem of low lithium carbonate crystallization efficiency caused by the fact that a three-dimensional crystallization nucleation matrix is fixedly arranged in a solar pond in the prior art. The salt lake lithium extraction crystallization base body assembly comprises a three-dimensional support arranged in brine in a solar pond and a plurality of base bodies connected to the three-dimensional support and used for providing a solid-liquid contact surface for lithium carbonate crystallization. The driving device is connected to the pond bank of the solar pond; and the driving rod is connected between the output end of the driving device and the three-dimensional bracket and is used for driving the three-dimensional bracket to swing back and forth in cooperation with the driving device.

The present invention discloses a nanofiltration membrane assembly for lithium extraction from salt lakes and a preparation device thereof, comprising a filter membrane main body and a coiled tube, and also comprising a detection assembly, which is used for detecting the use status of the filter membrane main body; a water outlet end cover and a water inlet end cover are respectively provided at both ends of the coiled tube, a guide tube is fixedly provided on the water inlet end cover, the detection assembly comprises a detection tube slidably sealed and arranged on the guide tube, an observation column is provided on the detection tube, and a detection assembly and a buffer assembly are provided on the water inlet end cover; when the filtering capacity of the filter membrane main body decreases, the pressure inside the coiled tube increases, pushing the buffer assembly to drive the observation column to slide, and the filtering capacity of the filter membrane main body can be fed back to the outside through the observation column, thereby facilitating the external judgment of the use degree of the filter membrane main body, so that the filter membrane main body can be accurately replaced after a certain degree of use, avoiding excessive or incomplete use of the filter membrane main body, resulting in reduced use effect of the filter membrane main body.

The invention discloses a method for preparing a humic acid anchored hydrotalcite coated Fe3O4 magnetic material based on salt lake bischofite and application, and belongs to the technical field of heavy metal adsorbents. The method comprises the following steps: preparing high-purity magnesium chloride hexahydrate by taking salt lake bischofite as a raw material, mixing with an aluminum source, hydrolyzing to generate a hydrotalcite precursor, and decomposing the nitrogen source to provide an alkaline environment to promote formation of a layered structure; humic acid is chelated with heavy metals through functional groups and is stably anchored on the surface of hydrotalcite, Fe3O4 is used as a magnetic substrate, the material is endowed with magnetism, and a hydrothermal one-step in-situ growth composite structure is realized. The composite material combines the advantages of humic acid, hydrotalcite and Fe3O4, the adsorption capacity is remarkably improved, chemical adsorption is enhanced, efficient solid-liquid separation is achieved, and the defects of traditional materials are overcome. When the bischofite is used as a heavy metal adsorbent, lead ions can be efficiently removed and rapidly recovered, the steps are simple, the cost is low, the effect is remarkable, a new way is developed for utilization of the bischofite in the salt lake, and the bischofite has subject and application values.

The invention relates to the technical field of metal extraction, in particular to a process for extracting magnesium from taupe salt lake clay containing magnesium in multiple occurrence states. A technology for extracting magnesium from taupe salt lake clay containing multi-occurrence-state magnesium is characterized by comprising the following steps that the salt lake clay is crushed and sieved, then fine particles are soaked in a leaching agent, and leaching liquid containing the magnesium element is obtained through filtering; wherein the leaching agent is prepared from concentrated hydrochloric acid, concentrated sulfuric acid and low-salinity water, and the volume ratio of the concentrated hydrochloric acid to the concentrated sulfuric acid to the low-salinity water is (0.05-0.15): (0.05-0.15): 0.8; the low-salinity water is natural water of the horse-sea basin. According to the method, the low-salinity water and the mixed acid (sulfuric acid and hydrochloric acid) are adopted to prepare the composite extracting agent, the efficient leaching rate is achieved through the multiple cooperation mechanisms of Cl <-> competitive adsorption replacement, sulfate radical complexing dissolution and the ultrasonic cavitation effect, the leaching capacity is greatly improved compared with a single water body technology, and meanwhile acid wastewater discharge is reduced.

The invention discloses a salt lake mineral available resource quantity prediction method based on multi-source data fusion, and the method comprises the steps: obtaining multi-source data, carrying out the registration of the multi-source data, and obtaining the registered multi-source data; according to the registered multi-source data, key features related to salt lake mineral resources are extracted, and a multi-dimensional feature vector is obtained; a resource quantity prediction model is constructed, and the resource quantity prediction model is obtained through multi-dimensional feature vector training; obtaining multi-source feature data of the to-be-predicted region; inputting the multi-source feature data of the to-be-predicted region into a resource quantity prediction model, and obtaining an available quantity prediction result of salt lake mineral resources; and carrying out regional division on a prediction result by adopting a clustering analysis method to obtain resource distribution conditions of different regions. According to the method, the problems of multi-source heterogeneous data fusion and salt lake mineral resource quantity prediction are effectively solved, and the prediction precision and reliability are improved.