30results about How to "Improve leaching efficiency" patented technology

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 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.

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 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 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 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.

This invention provides a method and system for constructing a supercritical carbon dioxide leaching environment for sandstone uranium ore, relating to the field of uranium mining technology. The method includes: acquiring geometric data and physical property information of the target sandstone uranium ore layer; establishing a three-dimensional geometric model of the ore layer based on the geometric data and physical property information, and simulating the temperature changes and pressure distribution of the ore layer during the pretreatment stage to obtain pretreatment simulation results; obtaining heating simulation results based on the pretreatment simulation results; simulating the thermal stability and leaching efficiency of the ore layer under different conditions based on the heating simulation results to obtain the operating parameters of the leaching environment; and selecting leaching system locations and designing the leaching system layout based on the operating parameters and heating simulation results to obtain the leaching system design scheme. This invention, by accurately simulating the temperature changes and pressure distribution of the ore layer during the pretreatment, heating, and leaching stages, can optimize the supercritical carbon dioxide leaching environment, ensuring the uniformity of heat transfer and pressure distribution, thereby improving the leaching efficiency of uranium ore.

This invention discloses a method for recycling retired lithium-ion battery cathode materials using lithium iron phosphate-mediated solvent regeneration. The method includes the following steps: leaching the retired battery cathode material with an acidic potassium bromide solution to obtain leachate A; leaching the lithium iron phosphate material with leachate A to obtain leachate B; and recycling the aforementioned steps under acidic conditions using leachate B instead of the acidic potassium bromide solution to obtain a recycled leachate enrichment solution. Due to proton attack and redox reactions with the acidic KBr solution, the cathode material undergoes structural collapse, dissociating its basic structure and leading to the dissolution of lithium and transition metals. Simultaneously, KBr is oxidized to liquid bromine. The generated acidic liquid bromine, with a higher redox potential, further selectively leaches lithium from the lithium iron phosphate through oxidation, achieving the recycling of the KBr solution. This method is simple to operate, green, and recyclable, offering significant economic and environmental benefits.

This invention discloses a method for remediating heavy metal contaminated soil using an iron-based nanocomposite modified electrode combined with a microbial electrochemical system. The method involves first preparing a suspension of Fe₃O₄ and GO, then uniformly coating the surface of a graphite rod with Fe₃O₄ and GO using a soaking-drying method to obtain an iron-based nanocomposite modified electrode. The modified electrode is then used as the anode, and the unmodified graphite rod electrode as the cathode. The anode and cathode are connected by wires and placed in a galvanic cell containing a culture medium and heavy metal contaminated soil. A domesticated microbial strain is then introduced for leaching. The modified electrode prepared using iron-based nanocomposite materials exhibits excellent electrochemical performance, high compatibility with microorganisms, and demonstrates good remediation performance for heavy metal contaminated soil through a combination of electrochemical and biological methods.

The invention belongs to the technical field of uranium ore mining and smelting, and particularly relates to a clay mineral protection type uranium ore in-situ acidification leaching regulation and control system and method. The system disclosed by the invention directly aims at the most fatal clay damage problem in the in-situ acidification, the clay is stabilized in advance through a chemical means, and the permeability is prevented from being reduced from the source. And the leaching efficiency is improved, the permeability of an ore bed is protected, the effective sweep range of the leaching liquid is ensured, and acid can be in full contact with and dissolve uranium ore, so that the final recovery rate of uranium is remarkably improved. And although the cost of the protective agent is increased, the operation cost of frequent acid pickling, pressurized liquid injection and the like caused by blockage is greatly reduced, the overall acid consumption and the equipment loss are reduced, and the comprehensive economic benefit is remarkable. And the production safety is guaranteed, the wellbore and safety risks caused by abnormal rising of the liquid injection pressure are avoided, the service life of a mining area is prolonged, and reliable technical support is provided for application of in-situ leaching uranium mining in complex mineralogy ore deposits.

This invention provides a nickel-cobalt hydroxide slurry leaching apparatus and method. The nickel-cobalt hydroxide slurry leaching method includes: separately conveying nickel-cobalt hydroxide material and a mixed liquid to a slurry preparation tank for slurry preparation to obtain a homogenized slurry; subsequently, leaching the homogenized slurry to obtain a leachate, and recirculating a portion of the leachate back to the slurry preparation process; the slurry preparation includes sequential primary and secondary agitated slurry preparation, with the primary agitated slurry preparation rate being lower than the secondary agitated slurry preparation rate; the liquid-to-solid ratio in the slurry preparation tank is (1~1.5):1. This invention achieves high-speed, continuous slurry preparation by optimizing the slurry preparation process and process parameters, greatly improving the uniformity and stability of the slurry.

The invention relates to the technical field of hydrometallurgy, in particular to a method for strengthening leaching of polymetallic ore associated mica type copper oxide ore. The method for strengthening leaching of the polymetallic ore associated mica type copper oxide ore comprises the following steps that the polymetallic ore associated mica type copper oxide ore is sequentially crushed and ground, and ore powder is obtained; leaching the ore powder by adopting an acid leaching agent; wherein the acid leaching agent comprises sulfuric acid, a fluorine ion providing agent and polyvinylpyrrolidone; and after leaching is finished, solid-liquid separation is conducted, and copper-containing leaching liquid and leaching residues are obtained. According to the method, the problem that the wrapped copper in the polymetallic ore associated mica type copper oxide ore is difficult to leach out is effectively solved through the synergistic effect of the fluorine ions and the polyvinylpyrrolidone in the acid leaching environment, efficient recovery of the copper is achieved, the copper leaching rate is high, the leaching efficiency is high, the process is simple, the cost is low, the energy consumption is low, and environment friendliness is achieved.

The invention relates to the technical field of uranium mining and well drilling construction, in particular to a drilling and well completion method for carbonate cementation ultra-low permeability sandstone type uranium resource mining. The method comprises the steps that firstly, a drill bit A is adopted for drilling a rock stratum, an open hole A is formed, and a small-size drill bit B is replaced for drilling to the designed hole depth; 2, new slurry is adopted to replace old slurry in a drill bit drilling well, comprehensive geophysical prospecting logging is carried out, and the position of a target ore bed is determined; thirdly, the roller bit is used for chambering to the lowering depth to obtain an open hole B, and the open hole B is circularly washed with new slurry after chambering is completed; fourthly, a well pipe is installed in the open hole B; fifthly, a grouting pipe is put into the well pipe, and cement paste is reversely injected into the annular space outside the pipe through a reserved round hole in the pipe wall of the well pipe; sixthly, the ore bed section is cut, and an ore bed cutting section is formed; and seventhly, drilling cleaning is conducted on the ore bed cutting section. Through the'windowing open hole 'drilling construction process research, no filter is arranged, and the problem that the submersible pump cannot be lowered to the filter section due to the fact that the inner diameter of a built-in filter is smaller than the outer diameter of the submersible pump in the prior art can be solved.

This invention discloses a composite material for hydrometallurgy, its preparation method, and its application, belonging to the field of battery recycling technology. The composite material for hydrometallurgy contains Li; the mass percentage of Li in the composite material is w1, and the mass percentage of Li in the form of lithium carbonate and lithium oxide is w2, where (w2 / w1)×100%≥30%; furthermore, in the XRD pattern of the composite material, there is a set of overlapping peaks 1 at 2θ=37.4°~39°, with a base width ≤1.13°. This composite material for hydrometallurgy exhibits good metal element recovery rate during hydrometallurgical processes, which is beneficial for cost reduction. The preparation method includes: ball milling battery waste with a co-grinding agent, drying to obtain degraded waste; and pyrolyzing and incinerating the degraded waste.

The invention discloses a preparation method for preparing a ternary material by using a nickel-iron alloy and the ternary material, and belongs to the technical field of ternary material preparation, and the preparation method comprises the following steps: S1, carrying out crushing and roasting pretreatment on the nickel-iron alloy, then carrying out acid leaching in a sulfuric acid solution, and filtering and collecting a mixed solution; s2, sequentially adding a sodium sulfide solution and a sodium fluoride solution into the mixed solution, filtering, and collecting a refined solution; s3, supplementing a cobalt source and a manganese source into the refined solution, and adjusting the molar ratio of Ni < 2 + > to Co < 2 + > to Mn < 2 + > in the solution to be x: y: (1-x-y), x = 0.6-0.8, and y = 0.1-0.2; adjusting the pH value of the refined solution to 10.5-11.5, filtering and collecting a precipitate to obtain a ternary precursor; and S4, uniformly mixing the ternary precursor, a lithium source and a doping agent to obtain a mixture which is yttrium salt and zirconium salt, and sintering the mixture to obtain the ternary material.