54results about How to "Improve leaching efficiency" patented technology

The invention discloses a method for preparing iron phosphate and aluminum oxide by utilizing step-by-step leaching of red mud, which comprises the following steps: (a) carrying out ore grinding treatment on the red mud to obtain red mud powder with preset fineness; (b) adding the red mud powder into mixed acid, carrying out acid leaching treatment at 30-50 DEG C, carrying out ultrasonic treatment assisted in the acid leaching process to obtain a leaching mixed solution, and carrying out solid-liquid separation on the leaching mixed solution to obtain leaching residues and a leaching solution containing iron and aluminum ions; the mixed acid is a mixed solution of hydrochloric acid, oxalic acid and phosphoric acid, the molar ratio of hydrochloric acid to oxalic acid is (2-5): (2-5), and the ratio of the amount of phosphoric acid substance to the amount of iron substance in the red mud is (0.9-1.2): 1; the molar concentration of H < + > in the mixed acid solution is 4-10 mol / L; (c) adjusting the pH value of the leachate, carrying out auxiliary stirring reaction under a set temperature condition, and then aging and filtering to obtain crude iron phosphate and filtrate; (d) calcining the crude iron phosphate, and cooling to obtain battery-grade iron phosphate; (e) adjusting the pH value of the filtrate, carrying out auxiliary stirring reaction under a preset temperature condition, and then aging and filtering to obtain aluminum hydroxide precipitate; and (f) calcining the aluminum hydroxide precipitate, and cooling to obtain the aluminum oxide.

The invention relates to a pressurized oxygen-enriched leaching method for a waste catalyst containing tungsten and molybdenum, and relates to the technical field of solid waste resource utilization, in particular to a pressurized oxygen-enriched leaching method for efficiently recovering tungsten and molybdenum from the waste catalyst containing tungsten and molybdenum, which comprises the following steps: firstly, removing organic matters and sulfides in the waste catalyst through anaerobic pyrolysis and oxidizing roasting steps; tungsten and molybdenum are oxidized into tungsten oxide and molybdenum oxide. Then, the treated catalyst is smashed and subjected to oxygen-enriched alkaline leaching in a high-pressure reaction kettle, a mixed solution of sodium carbonate and sodium hydroxide is selected as a leaching agent, and tungsten and molybdenum are converted into water-soluble sodium tungstate and sodium molybdate respectively under the conditions that the temperature is 150-200 DEG C and the oxygen pressure is 0.1-1.5 MPa, so that efficient leaching is achieved. By means of the method, the leaching rates of molybdenum and tungsten can reach 99% or above and 95% or above respectively, the recovery efficiency of valuable metal is remarkably improved, and the process is simple, environmentally friendly and suitable for large-scale industrial production.

The invention relates to a method for recovering valuable metal lithium from a waste ternary lithium ion battery, which comprises the following steps of: (1) discharging the waste ternary lithium ion battery, crushing, and sorting into black powder mixed with positive and negative electrode materials; (2) mixing the mixed black powder with a catalyst, and carrying out high-speed ball milling to improve the reduction activity of graphite; (3) roasting the powder in an inert atmosphere to obtain reduction roasting slag; and (4) putting the reduction roasting slag into a high-pressure kettle, adding deionized water, carrying out pressure boiling and lithium leaching reaction under the conditions of pressurization and heating, filtering after the reaction is completed, adding sodium carbonate into filtrate to precipitate lithium, and then filtering and drying to obtain a lithium carbonate product. According to the method, the graphite contained in the negative electrode is activated into the reducing agent, the ternary positive electrode material is reduced, the reduced ternary positive electrode material is directly autoclaved with water to extract lithium, an extra exogenous reducing agent is not needed, a chemical reagent is not needed, the method is simple, environment-friendly and low in cost, and the lithium extraction yield is relatively high.

The invention discloses a method for efficiently leaching platinum group metal in a waste automobile catalyst, and belongs to the field of rare and precious metal smelting. The method comprises the following steps: a leaching process: mixing the hulled waste automobile catalyst with a leaching agent, carrying out acid leaching in an acidic solution for a period of time, adding a complexing agent to complex platinum group metals, leaching for a period of time, and filtering to obtain a pregnant solution rich in the platinum group metals and carrier residues; wherein the leaching agent is a cerium-containing compound; a resin adsorption process: adsorbing the pregnant solution through an adsorption column filled with adsorption resin to obtain an adsorbed solution; and an elution process: washing the adsorbed adsorption resin with water and eluting the platinum group metal step by step, and regenerating the eluted adsorption resin for cyclic utilization. The method aims at avoiding generation of toxic and harmful substances (chlorine and NOx) and use of highly toxic cyanide in an existing wet process, environmental pollution and potential safety hazards are fundamentally eliminated, and meanwhile the leaching efficiency of the platinum group metal is remarkably improved.

The invention discloses a leech extract and a preparation method and application thereof, and relates to the technical field of leech extract preparation, the leech extract comprises leech oil, hirudin, mixed polypeptide and a small molecule extract, the small molecule extract is a small molecule compound and trace elements, the small molecule compounds are small molecule oligopeptides, pyridines, glycolipids, carboxylic esters and steroids, and the trace elements comprise Fe, Mn, Zn and Co; according to the leech extract and the preparation method and application thereof, through low-temperature, high-pressure and organic solvent subcritical efficient extraction, living leeches are instantly killed, biological enzymes are inactivated, leech oil in the leeches is effectively extracted, peculiar smells are removed, meanwhile, thermosensitive functional components are protected, and the extraction efficiency of hirudin is improved; ultrasonic extraction is performed through a continuous countercurrent ultrasonic extractor, so that the leaching efficiency of the hirudin is improved; neutral or alkaline protease is used for enzymolysis, protein is converted into high-activity oligopeptide, the utilization rate of effective components is increased, and the peculiar smell of the product is reduced.

The application discloses a method and system for comprehensively utilizing high-magnesium nickel sulfide ore by a low-temperature oxygen-rich method. The method comprises the following steps: obtaining pre-leaching residue by pre-leaching and magnesium removal with high-magnesium nickel sulfide ore as raw material; obtaining activated ore slurry by mechanically activating the pre-leaching residue; and obtaining a nickel-containing leaching solution by low-temperature oxygen-rich leaching of the activated ore slurry. The application has wide application range, is simple and reliable, easy to control, and low in investment cost, and can convert metals into corresponding products, so that high-magnesium nickel sulfide concentrate can be treated at low cost and high efficiency.

This invention relates to an ultrasonic field-enhanced gas-filled leaching tank, comprising a tank body, a stirring device, a gas filling device, and an ultrasonic generator. The tank body has a leaching chamber with an open upper end. The stirring head of the stirring device is located inside the leaching chamber. The gas filling device includes a gas filling pipe, with its inlet located outside the leaching chamber for connecting to an external gas supply device, and its outlet located inside the leaching chamber. The ultrasonic generator includes an ultrasonic probe, which is disposed inside the gas filling pipe to generate an ultrasonic field enhancement effect when gas is transported through the gas filling pipe. Compared with the prior art, the ultrasonic field-enhanced gas-filled leaching tank provided by this invention enhances the synergistic oxidation of oxidants and non-ferrous metals through ultrasound, achieving rapid and efficient leaching of non-ferrous metals. The advantage of this technology is that ultrasound can generate strong liquid flow shear force and microbubbles, increasing the contact area between the liquid and the metal surface, promoting the reaction between the oxidant and the non-ferrous metals, and improving leaching efficiency.

This invention provides equipment and a process for recovering valuable metals from lithium leaching residue, relating to the field of solid waste treatment technology. The equipment includes an electrically movable frame, an electrically lifting frame, a first treatment tank, a second treatment tank, a drive mechanism, and an acid leaching mechanism. The electrically lifting frame has an electrically adjustable lifting plate installed externally, and the drive mechanism is located on the outer wall of the lifting plate. The drive mechanism includes a fixed plate fixedly installed on the outer wall of the lifting plate, and a first mounting plate and a second mounting plate are fixedly mounted on the outer wall of the fixed plate. This design can automatically switch the rotation direction of the rotating plate and adaptively switch it from a vertical to an inclined posture. It can adapt to the characteristics of low-solids-content fluids. Through adaptive posture adjustment throughout the entire process—from strong vertical mixing in the early stage to uniform inclined suspension in the later stage—it achieves matching of the entire acid leaching process, comprehensively improving the overall leaching efficiency of valuable metals, facilitating subsequent solid-liquid separation processes, and further optimizing the resource utilization of leaching residue and the harmless disposal of solid waste.

This invention discloses a bimetallic organic framework material, its preparation method, and its application in waste gas purification. Specifically, it uses waste plastics with polyethylene terephthalate (PET) as the main component and cathode components from retired cobalt or manganese oxide lithium-ion batteries as raw materials. Based on the sulfuric acid hydrolysis of waste plastics coupled with sulfuric acid leaching of the cathode material, organic ligands and active metal ions are extracted separately. Cerium ions are further doped to form a bimetallic mixed ion, and finally, the bimetallic organic framework material is prepared through a solvothermal reaction. This material exhibits excellent adsorption activity and can efficiently adsorb and remove low concentrations of toluene and acetone-like organic pollutants from waste gas under medium- and high-temperature conditions. The raw materials of this invention are readily available, and the preparation process fully utilizes the acid hydrolysis process and products of waste plastics, achieving secondary recycling of internal products, significantly reducing the preparation cost of the metal-organic framework material, broadening the high-value resource utilization path of waste plastics and retired lithium-ion batteries, and combining economic advantages with environmental benefits.

This invention provides a leaching method for waste ternary cathode material and its application. The method includes the following steps: (1) mixing waste ternary cathode material with a mixed acid solution, reacting, and separating to obtain filtrate and filter residue; wherein the mixed acid solution is a combination solution of hydrochloric acid and organic acid solution; (2) mixing the filter residue with a detergent, washing, and separating to obtain washing liquid and filter cake; (3) mixing the filtrate from step (1) and the washing liquid from step (2) to obtain leaching solution. This leaching method does not require calcination treatment or the addition of external oxidants or reducing agents. With the synergistic effect of hydrochloric acid and organic acids, it not only simplifies the leaching process, reduces recycling costs, and increases economic benefits, but also avoids the pollution of the environment by valuable metals in waste ternary materials. It efficiently realizes the recycling and utilization of waste ternary cathode material, which is of great significance for the low-cost and high-efficiency recycling of waste batteries and the upgrading of industry technology.

The present application belongs to the field of mineral resources utilization, and particularly relates to a method for extracting potassium from potassium-rich slate, which comprises the following steps: subjecting the potassium-rich slate to low-temperature hydrothermal treatment at a temperature T1 to obtain leaching solution A and leaching residue A; in the low-temperature hydrothermal system, the Ca / Si weight ratio is controlled to be 2.2-3.0; the temperature T1 is 120-200 DEG C; subjecting the leaching residue A and an alkali activator to high-temperature hydrothermal treatment at a temperature T2 to obtain leaching solution B and leaching residue B; in the high-temperature hydrothermal system, the Ca / Si weight ratio is 2.2-3.0; the temperature T2 is 1.1-2 times the temperature T1. In view of the problem of difficulty in extracting potassium from potassium-rich slate, the present application proposes an innovative method: first, subjecting the raw material to low-temperature hydrothermal treatment to change its phase and microstructure, and then cooperating with the subsequent high-temperature hydrothermal process, the two synergistic effects can effectively destroy the crystal structure of the potassium-rich slate, thereby significantly improving the extraction efficiency and effect of potassium.

The invention discloses an ammonia leaching process of copper oxide ore, which comprises the following steps: crushing and grinding the copper oxide ore, adding an activating agent into the obtained ore pulp for activating treatment, sequentially adding ammonia liquor and sulfide for leaching treatment and precipitation reaction, and filtering, and copper sulfide concentrate and filtrate are obtained. Compared with a conventional ammonia leaching process, the ammonia leaching process of the copper oxide ore has the advantages that the copper oxide ore is sequentially subjected to crushing, ore grinding, activating treatment, leaching treatment and precipitation reaction, the copper leaching rate of the copper oxide ore can be remarkably increased, meanwhile, agent consumption and environmental pollution are reduced, and the ammonia leaching process is suitable for efficient recovery of complex and difficult-to-treat copper oxide ore; the method has the advantages of simplicity in operation, low cost, high leaching efficiency, good leaching effect, environmental friendliness and the like, and is high in use value and good in application prospect.

The invention belongs to the technical field of battery negative electrode material recovery, and particularly relates to a method for preparing a lithium battery negative electrode material through microwave-assisted recovery of modified waste graphite and the prepared modified graphite lithium battery negative electrode material. Aiming at the problems of poor electrolyte compatibility, poor cycling stability and the like of a graphite material, asphalt is adopted as a carbon source, recycled graphite is subjected to coating modification, and then a segmented heating solid-phase pyrolysis process is performed to prepare the graphite-based composite material with the core-shell-like structure. The waste graphite recycling, modifying and regenerating process disclosed by the invention has the characteristics of simplicity, high efficiency and environmental protection, the recycled graphite can be directly used as a lithium battery negative electrode material after being regenerated and modified, and the waste graphite recycling, modifying and regenerating process has the advantages of low cost, high reversible specific capacity and good cycle performance; and a new technical route is provided for preparation of a high-performance and low-cost lithium ion battery negative electrode material.

This invention discloses a method for improving the bioleaching efficiency of heavy metal contaminated soil using a carbon rod electrode system modified with graphene oxide (GO). The invention involves preparing a carbon nanomaterial, GN-GO, from traditional graphene rod electrodes using a GO suspension through a multiple soaking and drying process. The GN-GO material is then used as the anode, and the unmodified graphene rod electrode as the cathode. The anode and cathode, connected to an external power source via wires, are placed in a container containing a culture medium and a heavy metal contaminated soil sample. An acclimatized bacterial strain is then introduced, and leaching is performed at 25–30°C and 120–150 r / min. This invention improves the conductivity and specific surface area of ​​the electrode by altering the electrode surface structure of the bioelectrochemical system, while simultaneously optimizing the biocompatibility of the electrode material. The method combines electrochemical and biological approaches, resulting in high remediation efficiency and good remediation effects for heavy metal contaminated soil.

The utility model relates to the technical field of material leaching, in particular to a device for dissolving a nickel intermediate product with concentrated sulfuric acid, which comprises an outer side plate and further comprises a rotating component, a placing component, a driving component, a motor supporting seat and a driving motor, the rotating component is arranged on the outer side plate, the placing component is arranged on the inner surface of the outer side plate, and the driving component is arranged on the motor supporting seat. The driving assembly is arranged on the rotating assembly, the motor supporting base is arranged on one side of the outer side plate, the rotating assembly in the device can evenly mix the solid state of the nickel intermediate product with a concentrated sulfuric acid-hydrogen peroxide system, and a planetary gear rotates while rotating around a sun gear; an operator puts a solid state and a liquid state of a nickel intermediate product into a container, puts the container into a barrel cavity, the barrel cavity is fixedly connected to a planetary gear, a driving motor is started to enable the planetary gear to rotate continuously, a heating rod heats the container at the same time, the reaction is faster, the leaching efficiency of nickel metal is greatly improved, and time and labor are saved.

The invention discloses a pneumatic energy mixed-phase flow uniform mixing device which is characterized in that a fixed bracket is mounted at the bottom of a uniform mixing reaction kettle barrel, a mixed-phase flow uniform mixing spray head and a pneumatic energy distributor are mounted on the fixed bracket, an air inlet of the pneumatic energy distributor is connected with a high-pressure air supply device, an air outlet of the pneumatic energy distributor is connected with the mixed-phase flow uniform mixing spray head, and high-pressure air jet provides pneumatic energy; the mixed slurry is contacted and mixed with the mixed slurry in a limited space in the mixed-phase flow uniform mixing spray head to form a relatively low-density mixed-phase flow material, and the mixed-phase flow material is quickly conveyed under the action of continuous pneumatic thrust and upward buoyancy force and is sprayed out and diffused from a pipeline outlet at a high speed to drive ore pulp particles to form high-speed turbulent flow and mixed flow; the ore pulp particles and the activating agent are quickly mixed to realize shaftless stirring and uniform mixing. Turbulent flow and mixed-phase flow force between ore pulp and an activating agent are improved, the mixed-phase flow uniform mixing quality and efficiency are improved, the pneumatic energy mixed-phase flow uniform mixing device and the micro-electrolysis activating device are combined, an efficient uniform mixing activating system can be formed, and the leaching efficiency of metal minerals is improved.

The application discloses a method for recovering tungsten from waste SCR denitration catalyst acid leaching residue, which comprises the following steps: (1) using a mixed solution of sulfide and alkali to leach the waste SCR denitration catalyst acid leaching residue, and obtaining WO4 2‑ / WO x S 4‑x 2‑ solution and a titanium-rich residue after solid-liquid separation; (2) introducing ozone into the WO4 2‑ / WO x S 4‑x 2‑ solution obtained in step (1) to perform oxidation treatment, obtaining a WO4 2‑ solution, and recovering tungsten from the WO4 2‑ solution. The application uses sodium sulfide coupled with sodium hydroxide as the leaching agent, and using sodium sulfide as the leaching agent can not only reduce the alkali consumption of alkali leaching, but also has higher leaching efficiency, so that the efficient utilization of tungsten elements in the waste SCR denitration catalyst acid leaching residue is realized. The application uses ozone oxidation to transform the tungsten into sodium tungstate, and then performs subsequent impurity removal process, which is beneficial to improving the tungsten recovery rate.

This invention relates to the field of mineral utilization, specifically to a method for bacterial leaching of high-fluorine-content uranium ore. The method involves crushing the high-fluorine-content uranium ore and packing it into columns or heaps to obtain a ore heap. The ore heap is then sprayed with an acidic solution. The collected leachate is subjected to uranium adsorption treatment, and the adsorption tailings are defluorinated and recycled back to the spraying process. Subsequently, bacteria are implanted into the ore heap. Then, a spray solution containing boric acid and other acids is used for bacterial leaching. The collected bacterial leachate is subjected to uranium adsorption treatment, and the adsorption tailings are recycled back to the bacterial leaching process. This invention can process uranium ore with a fluorine content of 5% or higher while still exhibiting excellent uranium leaching efficiency and effect.

The utility model discloses a device for leaching manganese, iron and aluminum in microwave enhanced manganese oxide slag, which comprises a rotating device, a microwave feed inlet, a microwave cavity, a temperature control system and a leaching container, the rotating device is connected with the microwave cavity through a bearing, the microwave feed inlet is connected with the microwave cavity through a microwave feed-in deformer and a waveguide tube, and the temperature control system is connected with the leaching container. A sensor and a controller of the temperature control system are connected with the microwave cavity and the direct current motor; and the leaching container is fixed on a container jacket in the cavity. Through cooperation of microwaves and rotary stirring, energy is focused through the deformer, infrared temperature control and corrosion resistance design are combined, efficient leaching is achieved, the reaction time is shortened, the leaching rate is increased, and the device is energy-saving, environment-friendly, easy and convenient to operate and suitable for resource utilization of various solid wastes.

This invention discloses a gold extraction process and system using whole-sludge cyanidation without pre-concentration, relating to the field of gold beneficiation and smelting technology. It solves the problems of low grinding efficiency, complex processes, difficulty in recovering coarse gold particles, and high safety risks in existing processes. The process includes raw ore crushing, primary grinding, gravity separation, hydrocyclone classification, secondary grinding-leaching, leaching-adsorption, smelting, and tailings treatment; the system includes corresponding crushing, primary grinding, gravity separation, hydrocyclone classification, secondary grinding-leaching, leaching-adsorption, smelting, and tailings treatment units. The key innovation is: gravity separation recovers coarse gold particles after primary grinding; the secondary stage uses an azin mill to achieve synergistic grinding-leaching, eliminating the pre-concentration stage; and the filtrate reagents are recycled. This invention features a simplified process, low energy consumption, high gold recovery rate, and safe and environmentally friendly operation, suitable for gold extraction from gold ores containing coarse gold particles that require fine grinding.

The invention relates to a method for recovering valuable metals in cobalt slag through ultrasonic strengthening, and belongs to the technical field of hydrometallurgy. According to the method, the cobalt slag produced in the zinc hydrometallurgy purification process is used as a raw material, two-step leaching is conducted on the cobalt slag under the ultrasonic wave condition, the first-step sulfuric acid concentration is 1.5-2.5 mol / L, and the second-step sulfuric acid concentration is 1, 5-2.0 mol / L. Compared with a traditional cobalt slag leaching method, the using amount of a reducing agent is reduced by 40%-50%, the reaction time is shortened to be within 50%, and the method is suitable for industrial production. According to the method, the high leaching rate of valuable metal in the cobalt slag is achieved under the normal pressure and the low temperature, and the slag amount is reduced by 24%-31%. By means of the method, segmented leaching of iron, zinc, cobalt and manganese is achieved, the obtained first-segment leaching solution does not contain manganese basically, and the technical problem that manganese and zinc need to be further separated from the leaching solution is solved; and iron in the cobalt slag is basically completely leached in the first step, so that the influence of iron on cobalt leaching is effectively avoided or reduced.

The invention relates to the technical field of ultrasonic leaching, in particular to an ultrasonic-assisted leaching device and method based on production type metal organic source chemical vapor deposition equipment, and the ultrasonic-assisted leaching device comprises a plurality of substrates of the chemical vapor deposition equipment, a leaching barrel for placing the substrates and an ultrasonic generator for emitting ultrasonic waves, a fixing assembly used for fixing a substrate is arranged in the leaching barrel, a driving assembly used for controlling the fixing assembly to move is arranged outside the leaching barrel, and an air inlet assembly is arranged on the left side, close to the top, of the leaching barrel. According to the device, by arranging the fixing assembly, multiple substrates can be leached and cleaned at the same time at a time, reciprocating rotation is conducted under the action of the driving assembly, it is guaranteed that the upper surfaces and the lower surfaces of the substrates can be cleaned, and the cleaning effect is improved; in addition, through the arrangement of the air inlet assembly, air can be introduced during leaching to generate bubbles, the bubbles are broken and impacted through ultrasonic waves to accelerate leaching of residues, and the substrate can be automatically popped out and conveniently taken out after leaching and cleaning are finished.

The invention provides a method for preparing nano calcium carbonate through amine cycle by capturing carbon dioxide through ferronickel slag, and belongs to the technical field of waste resource utilization and carbon dioxide capture and utilization. The method comprises the following steps: mixing ferronickel slag powder with an ammonium chloride solution, and performing leaching reaction to obtain a mixed solution; adding ammonium hydroxide into the mixed solution to adjust the pH value, and filtering to obtain a leaching solution; introducing the flue gas into an ammonia water absorption tower to prepare an ammonium bicarbonate solution; the ammonium bicarbonate solution and the leachate are subjected to a carbonization reaction, nano calcium carbonate is obtained, ammonia gas generated by the carbonization reaction is recycled to an absorption tower to be reused, and a closed amine circulation system is formed. According to the amine circulation method, efficient utilization of CaO in the ferronickel slag can be achieved, meanwhile, CO2 in the flue gas is captured, the purity of obtained nano calcium carbonate is larger than or equal to 93%, the whiteness is larger than or equal to 94%, the nano calcium carbonate has the advantages of being small in particle size, good in dispersity and high in additional value, and cooperative utilization of high-additional-value recycling of the ferronickel slag and carbon dioxide emission reduction is achieved.

The utility model provides an oxygen conveying ultrasonic wave high -efficient leaching control system. Include: oxidation reaction groove, pump unit, valve group, including oxygen valve and steam valve, flowmeter group, pH meter, stirring motor, liquid level meter all are established on oxidation reaction groove, thermometer, be established on oxidation reaction groove, be used for monitoring the temperature of solution in oxidation reaction groove, pressure gauge, be established on high -efficient oxidation generator, be used for monitoring the pressure in high -efficient oxidation generator, central controller is connected with pump unit, valve group, flowmeter group, stirring motor, pH meter, liquid level meter, thermometer and pressure gauge electricity. Utilize above -mentioned system can realize the automatic regulation and control of oxidation reaction groove's feeding state and high -efficient oxidation generator oxygen intake's automatic regulation and control, convenient to the leaching process monitoring, debugging, alarm, stabilize simultaneously feeding, the accurate control of oxidation reaction groove's pH value and temperature value, high -efficient oxidation generator oxygen intake's accurate control and pressure monitoring.

The utility model discloses a kind of leaching and impurity removing devices for rare metal smelting, including inlet pipe, drain pipe, device body;The device body further includes shell, inner container, filter bag, base motor, processing mechanism, the inner container of the water hole of side surface setting is rotationally arranged in the inside of shell, filter bag is arranged in the inside of inner container, base motor is fixedly arranged in the inside bottom of shell, the upper output end of base motor is connected with the below of inner container, processing mechanism is arranged in the above of shell, and base motor is connected between the telecommunication of production workshop controller.The function of the utility model is that the rare metal in the material of broken block and powder can be leached and impurity removed simultaneously, the effective separation of leaching liquid and material is achieved, the leaching liquid remaining in material is recovered to the maximum extent, the waste of rare metal element in material is reduced, and the leaching efficiency is improved;Filter bag can prevent material chippings from remaining in device interior during leaching process, and facilitate cleaning and recycling.

The utility model discloses grain circulation immersion cleaning equipment which comprises a base support, the top of the base support is fixedly connected with a supporting frame, the top of the supporting frame is fixedly connected with an immersion cleaning tank, the top of the immersion cleaning tank is connected with a containing tank in a sliding and penetrating mode, and a plurality of permeation holes are formed in the outer side of the containing tank. A lifting mechanism is arranged on the base bracket; the lifting mechanism comprises a connecting frame fixedly arranged on the outer wall of the containing tank in a sleeving mode, and two symmetrically-distributed mounting cylinders are connected to the top of the base support in a penetrating mode. According to the circulating immersion cleaning equipment for the grains, the placing tank can be lifted out of the immersion cleaning tank through the arranged lifting mechanism, so that impurities and silt in the immersion cleaning tank can be conveniently washed away, then immersion water is replaced again, the placing tank is inserted into the immersion cleaning tank again, the grains in the immersion cleaning tank are subjected to immersion cleaning, and the circulating immersion cleaning effect is achieved; and meanwhile, the immersion cleaning efficiency is higher.

The application belongs to the technical field of silver-containing waste electronic and electrical equipment recycling, and particularly relates to a leaching agent for waste electronic and electrical equipment recycling, a preparation method and a silver leaching and recycling method. The leaching agent is trioctylmethylammonium triiodide [N 1888 ][I3], the trioctylmethylammonium triiodide [N 1888 ][I3] has good stability and low viscosity, does not need to be diluted by toxic organic solvents, the leaching agent recycles metals through oxidation and reduction, realizes high leaching efficiency under low-temperature stirring conditions, and avoids the use of acid or corrosive reagents and high energy consumption.

The present disclosure relates to the technical field of sandstone type uranium mine drilling well completion, and provides a reaming type in-situ leaching drilling secondary well completion quality control method, device, medium and equipment, which comprises: obtaining original stratum logging characteristics and stratum logging characteristics after reaming of a target logging section; and calculating a three-dimensional feature evaluation index based on the stratum logging characteristics after reaming and the original stratum logging characteristics; when the three-dimensional feature evaluation index does not meet a preset requirement, reaming construction is performed again; when the three-dimensional feature evaluation index meets the preset requirement, a filter is lowered to perform gravel throwing, and a gravel throwing rate of the reaming position is calculated after gravel throwing; when the gravel throwing rate meets a preset threshold value, well completion quality evaluation is completed and an evaluation report is determined; and when the gravel throwing rate does not meet the preset threshold value, secondary gravel throwing construction is performed. The embodiment combines the three-dimensional feature index of the reaming position with the gravel throwing rate of the reaming section, realizes multi-dimensional control of the sandstone type uranium mine drilling well completion quality, and improves the leaching effect of the ore bed and the service life of the drilling.

The application discloses a method and device for catalytic leaching of argillaceous uranium ore based on ozone, and relates to the technical field of uranium leaching and reaction equipment. The application utilizes biomass raw materials and iron-based material powder to prepare a magnetic composite material with catalysis-adsorption dual functions through in-situ reduction by high-temperature heat treatment. The slurry of argillaceous uranium ore and the magnetic composite material are mixed in a reactor for reaction. Ozone is introduced through an aeration disc to avoid bubble aggregation, significantly increase the gas-liquid contact area, and improve the ozone utilization rate. A spiral guide plate is arranged in the reactor to effectively prolong the gas-liquid contact time and improve the ozone mass transfer efficiency. A magnetic recovery device is used to recover the magnetic material to ensure the catalyst activity, reduce the catalyst loss rate, and realize efficient catalysis. Through optimization of the reactor structure, the catalyst preparation process and the process flow, the ozone utilization rate and the leaching efficiency of the argillaceous uranium ore are significantly improved, and the catalyst recycling and the recycling of residual gas are realized.