A method and system for harmless treatment of lithium slag and super-stable mineralization of beryllium by agent-slag cooperation

Abstract

This invention discloses a method and system for the harmless treatment and beryllium ultrastable mineralization of lithium slag through agent-slag synergy, belonging to the field of solid waste treatment technology. It includes: dissolving active silica-alumina excitation components according to mineral diagnostic data to obtain a structural excitation liquid; simultaneously activating the lithium slag and the excitation liquid through mechanochemical processes, reconstructing the interface of the adsorbed excitation components, and generating a modified lithium slag matrix; preparing a mineralization assembly liquid based on the beryllium exposure of the matrix; introducing the assembly liquid into the matrix in a segmented gradient, controlling the hydrogen ion concentration to induce in-situ crystallization at the interface, and obtaining a primary stabilizer; pressing the stabilizer and placing it in an alternating electromagnetic field coupled with an endogenous exothermic environment to generate beryllium ultrastable mineralization products. This invention employs a comprehensive treatment method combining deep mechanochemical simultaneous activation and exposure with slow-release ion in-situ crystallization and endogenous thermomagnetic coupling to drive ordered cross-linking of the microstructure. This method can destroy the dense inert framework of the waste slag and forcibly drive the migration and trapping of heavy metals, ultimately achieving deep ultrastable mineralization and seepage prevention of beryllium toxic ions.

Description

Technical Field

[0001] This invention relates to the field of solid waste treatment technology, and in particular to a method and system for the harmless treatment of lithium slag and the ultra-stable mineralization of beryllium through agent-slag synergy. Background Technology

[0002] The large-scale development and deep refining of lithium resources inevitably generate massive amounts of deep-processed lithium slag rich in complex mineral phases. This type of industrial solid waste system typically contains or is deeply embedded with beryllium, a highly microscopically active and easily transphase-migrating toxic heavy metal. To prevent the free diffusion of such hazardous substances through natural rainwater runoff or infiltration into the ground, causing long-term pollution of the ecological soil and groundwater, modern industry must implement strict structural consolidation and deep, harmless mineralization operations on the generated raw slag during the emission process. This ensures that the slag meets the basic engineering thresholds for environmentally safe landfill disposal or downgraded utilization as building materials.

[0003] Among related technologies, the invention patent with announcement number CN118558703B discloses a method for the harmless treatment of lithium slag to remove thallium and beryllium. This method includes: using waste lithium slag after lithium extraction from lepidolite as the main raw material, and combining ball milling with chemical treatment using added chemical agents. By further grinding and crushing the waste lithium slag, the surface area of ​​the waste lithium slag is increased, making the subsequent stabilization reaction more thorough. Simultaneously, soluble salts such as potassium, sodium, beryllium, and thallium encapsulated in the waste lithium slag are released, allowing them to dissolve in water during washing. Simultaneously, mechanical ball milling converts some insoluble lithium into soluble lithium, increasing the recovery rate of metallic lithium. Harmful elements such as beryllium and thallium in the waste lithium slag are removed through water washing and spray washing, ensuring that the beryllium and thallium content in the treated lithium slag meets the standards. The beryllium and thallium content in the treated lithium slag is as follows: Tl < 0.01 mg / L, Be < 0.02 mg / L.

[0004] However, the above-mentioned scheme only transfers heavy metals to sludge to form "secondary hazardous waste" that needs to be outsourced for treatment, and does not achieve true in-situ harmlessness. Secondly, in terms of process control, the addition of reagents relies on empirical fixed ratios, lacking precise diagnosis and targeted control of the internal phases and microscopic occurrence state of beryllium in lithium slag. Moreover, the simple macroscopic ball milling is disconnected from the chemical reaction phase, and cannot achieve deep activation of the interface. Finally, the direct mixing in the stabilization process can easily lead to abnormal agglomeration and physical shielding of precipitates on the particle surface. The final product formed is only a simple surface coating, lacking the driving force of skeletal cross-linking at the microscopic lattice level and internal structural strengthening. This results in poor long-term physicochemical stability of the solidified product and a high risk of secondary leaching of heavy metals in complex environments. Summary of the Invention

[0005] To address the aforementioned issues, this invention provides a method and system for the harmless treatment of lithium slag and the ultra-stable mineralization of beryllium through agent-slag synergy. It employs a comprehensive treatment approach that combines deep mechanical activation and exposure with slow-release ion in-situ crystallization and endogenous thermomagnetic coupling to drive the orderly cross-linking of the microstructure. This approach can destroy the dense inert skeleton of the waste slag and forcefully drive the migration and capture of heavy metals, ultimately achieving deep ultra-stable mineralization and seepage prevention of beryllium toxic ions.

[0006] The above objectives can be achieved through the following approach:

[0007] A method for harmless lithium slag treatment and beryllium ultra-stable mineralization through agent-slag synergy includes obtaining mineral diagnostic data by acquiring phase parameters and beryllium occurrence parameters of the lithium slag raw material; dissolving active silicon-aluminum activating components according to the proportion determined by the mineral diagnostic data to obtain a structural activation liquid; introducing the lithium slag raw material and the structural activation liquid into a grinding chamber for simultaneous mechanochemical activation; utilizing the newly formed interface generated by the collision of grinding media to adsorb the active silicon-aluminum activating components for interface reconstruction to generate a modified lithium slag matrix with a beryllium-rich active interface; and obtaining the beryllium ion concentration in the modified lithium slag matrix. Based on the degree of exposure, a mineralization assembly solution containing a phosphate slow-release source and a metal cation component is prepared at a stoichiometric ratio. The mineralization assembly solution is mixed with the modified lithium slag matrix through a segmented gradient introduction method, and the hydrogen ion concentration of the system is adjusted to induce in-situ crystallization at the interface to obtain a primary stabilizer. The primary stabilizer is pressed to obtain a shaped green body, and the shaped green body is placed in an environment coupled with an alternating electromagnetic field and an internal exothermic source for structural strengthening. The cross-linking of the micro-framework is driven by electromagnetic orientation force and chemical reaction heat to generate beryllium ultrastable mineralization products.

[0008] Optionally, obtaining mineral diagnostic data by acquiring phase parameters and beryllium occurrence parameters of lithium slag raw materials includes: drying the collected crude lithium slag until the moisture content is lower than the predetermined process threshold to obtain dry slag; feeding the dry slag into a crushing and grading device for physical diameter reduction and screening to obtain lithium slag raw materials; and acquiring phase parameters and beryllium occurrence parameters of the lithium slag raw materials to obtain mineral diagnostic data.

[0009] Optionally, obtaining the structure-activating solution includes: calculating the dissolution ratio of the active silicon-aluminum activating components using the mineral diagnostic data, and dissolving the active silicon-aluminum activating components to obtain the structure-activating solution.

[0010] Optionally, the generation of the modified lithium slag matrix with a beryllium-rich active interface includes: analyzing the mineral diagnostic data to determine the proportion of amorphous components in the lithium slag and obtaining the excitation liquid flow rate parameters; atomizing the structural excitation liquid according to the excitation liquid flow rate parameters to generate atomized structural excitation liquid; starting the grinding chamber to perform high-energy pulverization of the lithium slag raw material, and covering the surface of the new particles with the atomized structural excitation liquid at the instant the new particles are generated to obtain a moist interface layer; using continuous mechanical force to drive the chemical bond breakage of the moist interface layer, causing beryllium ions to migrate to the particle surface and combine with the excitation components to generate the modified lithium slag matrix with a beryllium-rich active interface.

[0011] Optionally, the preparation of the mineralization assembly solution containing a phosphate slow-release source and a metal cation component includes: analyzing the surface activity state of the modified lithium slag matrix to obtain the exposure degree of beryllium ions, calculating the ion ratio required for targeted solidification, and obtaining a stoichiometric ratio; selecting a phosphate ester organic compound with acid-sensitive hydrolysis characteristics as a phosphate slow-release source according to the stoichiometric ratio, and selecting a metal salt whose solubility changes under specific pH conditions as a metal cation component, performing dissolution treatment to obtain an initial solution; measuring the ion activity of the initial solution to obtain a stability benchmark value, and adding an acid-base buffer to adjust the conductivity of the initial solution to obtain the mineralization assembly solution.

[0012] Optionally, obtaining the primary stabilizer includes: adding the mineralization assembly solution to the modified lithium slag matrix at a flow rate gradient from low to high to obtain a penetrating slurry, allowing mineralization molecules to be directionally adsorbed at the beryllium-rich active interface; injecting an acidic conditioning solution determined based on the mineral diagnostic data into the penetrating slurry, triggering the hydrolysis reaction of the phosphate slow-release source by reducing the negative logarithm of the hydrogen ion concentration in the system to obtain highly active phosphate ions; driving the highly active phosphate ions to rapidly combine with beryllium ions at the interface to form phosphate microcrystals, and guiding the active silicon-aluminum excitation component to undergo a polycondensation reaction around the phosphate microcrystals to obtain the primary stabilizer.

[0013] Optionally, the method further includes: acquiring real-time torque data of the penetrating mortar during dynamic mixing to obtain kinetic characteristic values; adjusting the rotation speed of the mixer in real time according to the kinetic characteristic values ​​to keep the micro-shear force of the penetrating mortar within a preset parameter range; and using the micro-shear force to inhibit the abnormal aggregation of the phosphate microcrystals to obtain a primary stable body with uniform composition.

[0014] Optionally, the generation of beryllium ultrastable mineralization products includes: obtaining electromagnetic field control parameters by acquiring the dipole moment distribution characteristics inside the formed billet, and applying a low-frequency alternating electromagnetic field that conforms to the electromagnetic field control parameters to the formed billet; using the orientation force generated by the low-frequency alternating electromagnetic field to induce the orderly arrangement of microparticles inside the primary stable body to obtain an oriented structure; activating the energy release components inside the oriented structure to generate a uniformly distributed internal heat source, driving the oriented structure to undergo deep dehydration and lattice reconstruction to generate beryllium ultrastable mineralization products.

[0015] Optionally, activating the energy-releasing components within the directional structure to generate a uniformly distributed internal heat source includes: mixing a metal additive matching the chemical potential of the lithium slag raw material into the primary stabilizer to obtain an energy candidate; adjusting the oxygen partial pressure and ambient temperature parameters of the curing environment in which the energy candidate is located to calculate reaction triggering condition parameters; using the reaction triggering condition parameters to trigger the metal additive to undergo a controlled oxidation reaction within the formed blank to release heat energy and generate an initial heat release field; collecting dynamic data of the temperature gradient induced by the initial heat release field within the formed blank, and performing real-time feedback adjustment of the ambient temperature parameters to smooth out heat release fluctuations and generate a uniformly distributed internal heat source.

[0016] Based on the same inventive concept, this invention also provides a lithium slag harmless treatment and beryllium ultra-stable mineralization system with agent-slag synergy, comprising: a parameter diagnosis solution preparation module, used to obtain phase parameters and beryllium occurrence parameters of lithium slag raw materials to obtain mineral diagnostic data, and dissolve active silicon-aluminum activating components according to the ratio determined by the mineral diagnostic data to obtain a structural activation solution; a synchronous activation and modification module, used to introduce the lithium slag raw materials and the structural activation solution into a grinding chamber for synchronous mechanochemical activation, and utilize the newly formed interface generated by the collision of grinding media to adsorb the active silicon-aluminum activating components for interface reconstruction, generating a modified lithium slag matrix with a beryllium-rich active interface; and a mineralization solution targeted preparation module, used to obtain... The exposure level of beryllium ions in the modified lithium slag matrix is ​​determined, and a mineralization assembly solution containing a phosphate slow-release source and metal cation components is prepared based on the stoichiometric ratio determined by the exposure level. An in-situ crystallization stabilization module is used to mix the mineralization assembly solution with the modified lithium slag matrix through a segmented gradient introduction method, and adjust the hydrogen ion concentration of the system to induce in-situ crystallization at the interface to obtain a primary stabilizer. A coupling crosslinking strengthening module is used to press the primary stabilizer to obtain a molded green body, and place the molded green body in an environment coupled with an alternating electromagnetic field and an endogenous exothermic source for structural strengthening. The crosslinking of the micro-framework is driven by electromagnetic orientation force and chemical reaction heat to generate beryllium ultrastable mineralization products.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] This invention achieves deep coupling of mechanochemical simultaneous activation and structural excitation liquid, forcibly breaking the extremely dense original solid solution lattice of lithium slag. By utilizing the newly formed fractured surface generated by high-speed collision and the free energy of instantaneous transition, it successfully induces the directional migration and pre-enrichment of deeply hidden toxic beryllium ions to the particle surface, thereby improving the targeted reaction activity of the solid-solid interface of bulk solid waste and the penetration and utilization rate of subsequent chemical treatment reagents.

[0019] This invention achieves precise solution preparation based on the actual ion leakage level obtained by solid microscopic detection. It utilizes a slow-release phosphorus source with acid-sensitive hydrolysis characteristics and metal auxiliary ions to induce local rapid in-situ crystallization at the solid waste micro-interface. Through a nanosecond-level netting mechanism, a highly encapsulated thermodynamically stable mineral precursor is generated on the outer surface of the waste residue, thus constructing the first high-strength microscopic physicochemical isolation barrier to intercept the escape and infiltration of harmful heavy metals.

[0020] This invention creatively couples low-frequency alternating electromagnetic orientation force with the internal exothermic oxidation of trace metal additives and introduces it into the solid waste slag reconstruction and molding stage. The magnetic torque is used to overcome the frictional resistance between the fine particles of the slag, causing it to transform from a scattered accumulation into a highly dense long-range ordered structure. At the same time, the uniform micro-explosive heat release inside the system drives the silicon-aluminum condensation, eliminating the temperature gradient crack defects caused by conventional external heating, and realizing the lattice-level permanent anchoring and closed ultra-stable mineralization of toxic beryllium.

[0021] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of a process for the harmless treatment of lithium slag and the ultra-stable mineralization of beryllium through agent-slag synergy, according to an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the hybrid speed dynamic adjustment based on torque feedback according to an embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the ordered arrangement of microscopic particles induced by an alternating electromagnetic field according to an embodiment of the present invention.

[0026] Figure 4 This is a schematic diagram of the structure of a lithium slag harmless treatment and beryllium ultra-stable mineralization system with agent-slag synergy according to an embodiment of the present invention. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Reference Figure 1 One embodiment of the present invention proposes a method and system for harmless lithium slag treatment and beryllium ultra-stable mineralization through agent-slag synergy. It adopts a comprehensive treatment method that combines deep mechanical activation and exposure with slow-release ion in-situ crystallization and endogenous thermomagnetic coupling to drive the orderly cross-linking of microstructure. This method can destroy the dense inert skeleton of waste slag and force the migration and capture of heavy metals, ultimately achieving deep ultra-stable mineralization and seepage prevention of beryllium toxic ions.

[0029] The method described in this embodiment specifically includes:

[0030] S1. Obtain mineral diagnostic data by acquiring the phase parameters and beryllium occurrence parameters of the lithium slag raw material, and dissolve the active silicon-aluminum activating components according to the ratio determined by the mineral diagnostic data to obtain the structure activation liquid;

[0031] Optionally, obtaining mineral diagnostic data by acquiring the phase parameters and beryllium occurrence parameters of the lithium slag raw material includes:

[0032] The collected crude lithium slag is dried until the moisture content is lower than the predetermined threshold of the process to obtain dry slag;

[0033] The dry slag is fed into a crushing and grading equipment for physical diameter reduction and screening to obtain lithium slag raw material.

[0034] The phase parameters and beryllium occurrence parameters of the lithium slag raw material were collected to obtain mineral diagnostic data.

[0035] Specifically, firstly, the crude lithium slag containing a certain amount of moisture collected from the production line is fed into an industrial oven or fluidized bed dryer for continuous drying at a preset temperature, such as 100–110℃. The moisture content is monitored using an online humidity sensor or by periodic sampling and weighing until it falls below a predetermined process threshold, such as less than 1%. This aims to eliminate the interference of moisture on subsequent crushing and grading efficiency and the accuracy of phase parameter analysis, resulting in stable dry slag. Next, the dry slag is fed into a multi-stage crushing and grading system consisting of a jaw crusher, hammer crusher, and vibrating screen. Mechanical force reduces the particle size, and the slag is then screened using screens of different apertures to obtain lithium slag raw materials with uniform particle size distribution that meet the requirements of subsequent processing. Finally, samples of the prepared lithium slag raw material were taken, and X-ray diffraction (XRD) was used to determine the crystal structure and relative content of each mineral, such as quartz, spodumene residue, and feldspar; these are the phase parameters. Simultaneously, X-ray fluorescence spectrometry (XRF) was used to analyze its chemical elemental composition. Combined with high-resolution scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS), the specific distribution and occurrence morphology of beryllium in different mineral particles were observed, such as its isomorphic existence within the crystal lattice or adsorption on the particle surface. This data collectively constitutes the beryllium occurrence parameters. All analytical results were summarized to obtain complete mineral diagnostic data to guide subsequent processes.

[0036] For example, the operator first collects a batch of coarse lithium slag from the end of the lithium battery cathode material production line. Approximately 100 kg is placed in a 105°C forced-air drying oven and dried for 4 hours until its moisture content is measured to be less than one percent. Subsequently, the dried slag is fed into a two-stage crushing system. It is first coarsely crushed by a jaw crusher to a particle size of less than 10 mm, then finely crushed by a hammer crusher, and finally sieved through a 200-mesh (approximately 74 micrometers) vibrating screen. The undersize material is collected as raw material for subsequent experiments. X-ray diffraction analysis of this lithium slag raw material sample revealed that it mainly consists of 70% amorphous glassy phase and 30% crystalline quartz phase. Further X-ray fluorescence spectroscopy analysis showed that its total beryllium content was 0.05%. Further scanning electron microscopy and energy dispersive spectroscopy analysis revealed that most of the beryllium was dispersed in the amorphous glassy phase. The data obtained from this series of operations regarding the proportion of amorphous materials, mineral composition, and beryllium distribution constitute the mineral diagnostic data for this batch of lithium slag. Through refined pretreatment and in-depth physical property analysis of the raw materials, precise data support was provided for subsequent chemical modification and solidification schemes, realizing a shift from "experience-based formulations" to "precision customization."

[0037] Optionally, the obtained structure-excitation fluid comprises:

[0038] The dissolution ratio of the active silicon-aluminum activating component is calculated using the mineral diagnostic data, and the active silicon-aluminum activating component is dissolved to obtain a structure activating solution.

[0039] Specifically, this process utilizes the mineral diagnostic data obtained in the previous step, particularly the content and proportion of active components such as amorphous silicon-aluminum oxides and inert components such as quartz in the lithium slag, to calculate the optimal dissolution ratio of the required active silicon-aluminum activating components. The calculation relationship can be expressed as the ratio of the required mass of the silicon source component to the required mass of the aluminum source component, i.e., the dissolution ratio. The calculation of this dissolution ratio... ,have:

[0040] ;

[0041] in, The mass fraction of the added standard substance in the sample; The integral intensity of the diffraction peak of the standard substance in the sample; The integral intensity of the diffraction peak of a pure standard substance; The mass ratio of silicon to aluminum in lithium slag itself; The process adjustment coefficient, determined by excitation efficiency experiments, is typically between 0.8 and 1.2. This ensures that the active ions in the structure excitation solution can maximally replenish and adjust the chemical environment of the lithium slag matrix to promote the depolymerization and recombination of its internal network structure. After calculating the dissolution ratio, easily soluble silicates, such as sodium silicate, are selected as the active silicon source, and aluminates, such as sodium aluminate, are selected as the active aluminum source. They are weighed according to the calculated mass ratio and dissolved in a certain amount of deionized water. The mixture is thoroughly mixed in a stirrer until a homogeneous and transparent solution is formed, thus obtaining the final structure excitation solution.

[0042] For example, the operator calculates the optimal dissolution ratio of the active silicon-aluminum excitation component based on the ratio of amorphous silicon-aluminum oxide content to inert components such as quartz in the lithium slag, according to the mineral diagnostic data. Specifically, X-ray diffraction analysis is first used. Corundum, at 20% of the sample mass, is added as a standard substance to the lithium slag sample. At this point, the mass fraction of the standard substance in the sample is 0.2. The integrated intensity of the diffraction peak of corundum in the sample is measured to be 8500, while the integrated intensity of the diffraction peak of pure corundum standard substance is 10000. X-ray fluorescence spectroscopy analysis reveals that the silicon-aluminum element mass ratio of the lithium slag itself is 3.5. Based on multiple excitation efficiency experiments, the process adjustment coefficient is determined to be 1.0. These values ​​are then substituted into the formula for calculating the dissolution ratio. This indicates that the structure activation solution needs to be prepared according to a silicon to aluminum source mass ratio of 2.63. Subsequently, the operator weighed 2630 grams of easily soluble sodium silicate as the active silicon source and 1000 grams of sodium aluminate as the active aluminum source, and slowly added them sequentially to a mixing tank pre-filled with 10 liters of deionized water. The stirrer was turned on and mixed continuously at 300 rpm for 30 minutes until all solids were completely dissolved, forming a homogeneous and transparent solution, which is the structure activation solution. By using quantitative calculations based on the mineralogical characteristics of lithium slag itself, replacing empirical rough proportions, the active silicon and aluminum ions in the prepared structure activation solution can precisely match and supplement the chemical environment requirements of the lithium slag matrix. This provides precise "chemical scissors" for the subsequent efficient destruction of the dense inert framework of lithium slag and the promotion of its network structure depolymerization and recombination, improving the targeting and efficiency of the modification.

[0043] S2. The lithium slag raw material and the structure activation liquid are introduced into the grinding chamber for simultaneous mechanochemical activation. The newly formed interface generated by the collision of the grinding media adsorbs the active silicon-aluminum activation components to reconstruct the interface and generate a modified lithium slag matrix with a beryllium-rich active interface.

[0044] Optionally, the generation of the modified lithium slag matrix with a beryllium-rich active interface includes:

[0045] The proportion of amorphous components in the lithium slag was determined by analyzing the mineral diagnostic data, and the excitation liquid flow rate parameters were obtained.

[0046] The structure-activating liquid is atomized according to the activation liquid flow parameters to generate an atomized structure-activating liquid;

[0047] The grinding chamber is activated to perform high-energy pulverization of the lithium slag raw material. At the instant the surface of the newly formed particles is generated, the atomized structure-activating liquid is applied to cover the surface of the newly formed particles to obtain a wet interface layer.

[0048] By continuously inputting mechanical force, the wet interface layer is driven to break chemical bonds, causing beryllium ions to migrate to the particle surface and combine with the excitation component, thereby generating a modified lithium slag matrix with a beryllium-rich active interface.

[0049] Specifically, a key process parameter, namely the activation liquid flow rate, is first determined based on the proportion of amorphous components in the mineral diagnostic data. A higher proportion of amorphous components indicates greater potential activity in the lithium slag, requiring a more complex activation liquid structure to match it. Therefore, the activation liquid flow rate is positively correlated with the proportion of amorphous components. The calculation of the activation liquid flow rate parameter... ,have:

[0050] ;

[0051] in, The mass fraction of amorphous components in lithium slag is obtained from mineral diagnostic data and ranges from 0 to 1. The mass flow rate of the lithium slag being processed; The process proportioning coefficient is determined experimentally or empirically, with a value ranging from 0.05 to 0.15 L / kg. Then, the structure activation liquid prepared in the previous step is pumped to the atomizing nozzle via a high-pressure pump, dispersing it into fine droplets according to the set activation liquid flow parameters, forming the atomized structure activation liquid. Simultaneously, a grinding chamber containing grinding media, such as high-hardness steel balls or ceramic balls, is activated, and lithium slag raw materials are fed into it. Under the high-speed impact, shearing, and friction of the grinding media, the lithium slag particles are continuously pulverized, exposing a large number of highly chemically active new particle surfaces. At the instant these surfaces are formed, the atomized structure activation liquid is precisely sprayed and evenly covers them, forming a nanoscale, moist interface layer. Under continuous mechanical force input, the active silicon-aluminum components in this moist interface layer undergo a violent chemical reaction with the newly formed lithium slag surface. The high-energy mechanical impact drives the breakage of silicon-oxygen bonds and aluminum-oxygen bonds in the lithium slag solid solution lattice, providing channels and impetus for the precipitation and migration of beryllium ions inside. Ultimately, the beryllium ions that were originally buried deep inside the particles are able to migrate to the particle surface and immediately complex or combine with the excitation components in the interface layer, generating a beryllium-rich active interface with highly enriched beryllium and significantly enhanced chemical activity. The resulting product is the modified lithium slag matrix.

[0052] For example, based on previously obtained mineral diagnostic data, the operator determined that the mass fraction of amorphous components in the current batch of lithium slag was 0.75%. The processing requirement for this batch was 2000 kg of lithium slag per hour, meaning a lithium slag mass flow rate of 2000 kg per hour. Through previous activation efficiency optimization experiments, a process ratio coefficient of 0.08 liters per kilogram was determined to be suitable for the grinding equipment and the characteristics of the lithium slag. The operator then substituted this value into the calculation formula for the activation liquid flow rate parameter. (Liters per hour). Subsequently, the operator connected the structure-activating liquid prepared in the previous step to a dual-fluid atomizing nozzle through a high-pressure hose, and precisely set the flow rate of the high-pressure pump to 120 liters per hour based on calculations. Simultaneously, 2000 kg of lithium slag raw material per hour, along with high-hardness zirconia balls as grinding media, were continuously fed into the grinding chamber of a large ISA mill. After the equipment was started, the grinding media generated intense impact, shearing, and friction under high-speed rotation, instantly pulverizing the lithium slag particles and exposing numerous newly formed surfaces with broken chemical bonds. In the millisecond instants of these newly formed surfaces, structure-activating liquid, dispersed into tens of micrometer-sized droplets through the atomizing nozzle, was precisely sprayed and evenly covered, forming an extremely thin wetted interface layer. During subsequent continuous grinding, the continuous mechanical energy input drove the active silicon-aluminum components in the wetted interface layer to undergo a violent mechanochemical reaction with the newly formed lithium slag surface. The high-energy mechanical impact forcibly disrupted the crystal lattice of the lithium slag solid solution, creating channels for the precipitation and migration of beryllium ions. Ultimately, beryllium ions, originally buried deep within the particles, are driven to the particle surface and immediately undergo a complexation reaction with the excitation components in the interface layer, generating a beryllium-rich active interface with highly concentrated beryllium and significantly enhanced chemical activity. The entire grinding process operates continuously and stably, and the powdered material continuously obtained from the outlet is the modified lithium slag matrix. By introducing a quantitative calculation formula based on the proportion of amorphous components and mass flow rate, precise dynamic control of the excitation solution supply flow rate is achieved, laying the foundation for the thorough and stable mineralization of beryllium ions.

[0053] S3. Obtain the exposure degree of beryllium ions in the modified lithium slag matrix, and prepare a mineralization assembly solution containing a phosphate slow-release source and metal cation components based on the stoichiometric ratio determined by the exposure degree.

[0054] Optionally, the preparation of the mineralization assembly solution containing a phosphate slow-release source and a metal cation component includes:

[0055] The surface activity state of the modified lithium slag matrix was analyzed to obtain the exposure degree of beryllium ions, and the ion ratio required for targeted solidification was calculated to obtain the stoichiometric ratio.

[0056] According to the stoichiometric ratio, phosphate ester organic compounds with acid-sensitive hydrolysis characteristics are selected as phosphate slow-release sources, and metal salts with solubility changes under specific pH conditions are selected as metal cation components. The solutions are then dissolved to obtain the initial solution.

[0057] The ion activity of the initial solution was measured to obtain a stability baseline value, and an acid-base buffer was added to adjust the conductivity of the initial solution to obtain a mineralized assembly solution.

[0058] Specifically, the first step is to analyze the surface activity state of the modified lithium slag matrix. For example, chemical titration or ion-selective electrodes can be used to determine the concentration of exchangeable beryllium ions on its surface, thereby quantitatively obtaining the degree of beryllium ion exposure. Based on this exposure level, the stoichiometric ratio of phosphate to beryllium ions required for targeted solidification needs to be determined. This stoichiometric ratio is determined based on the chemical formula of the target phosphate mineral, such as beryllium phosphate (Be3(PO4)2), with a theoretical molar ratio of phosphate to beryllium ions of 2:3. Considering the subsequent reaction environment and solidification efficiency, a stoichiometric coefficient is introduced to adjust the theoretical ratio, yielding the stoichiometric ratio used in practice. ,have:

[0059] ;

[0060] in, For beryllium phosphate minerals, the ratio is 2 / 3, which is the theoretical stoichiometric ratio. The stoichiometric coefficient is a constant greater than 1, used to ensure an excess of phosphate to drive the reaction to completion. Its value is typically determined experimentally and ranges from 1.1 to 1.5. Based on the calculated stoichiometric ratio R and the measured beryllium ion exposure level, the total number of moles of phosphate slow-release source required for targeted curing can be calculated. The calculation of the required number of moles of phosphate slow-release source is as follows: ,have:

[0061] ;

[0062] in, This represents the molar concentration of exchangeable beryllium ions on the surface of the modified lithium slag matrix, as determined by analysis. This represents the total mass of the modified lithium slag matrix to be treated. Based on the calculation results, phosphate ester organic compounds with acid-sensitive hydrolysis characteristics were selected as the slow-release source of phosphate. Simultaneously, a metal salt whose solubility changes significantly under specific pH conditions was selected as the metal cation component, which can assist in the formation of a more stable complex phosphate structure in subsequent reactions. These two components were dissolved in water according to the calculated amounts to obtain the initial solution. Subsequently, the ion activity of this initial solution was measured using an ion activity meter, and this value was recorded as a stability benchmark for subsequent monitoring of solution stability. Finally, an acid-base buffer was added to the initial solution, and the conductivity of the solution was monitored and adjusted to a preset range, such as 400 to 600 microsiemens per centimeter, using a conductivity meter to ensure that the final mineralized assembly solution has good storage stability and ion compatibility before being added to the lithium slag system.

[0063] For example, the operator takes 100 kg of the modified lithium slag matrix prepared in the previous process and places it in a laboratory reaction vessel. To quantitatively determine the exposure level of beryllium ions in this batch of modified lithium slag matrix, the operator uses ethylenediaminetetraacetic acid (EDTA) complexometric titration to analyze the concentration of exchangeable beryllium ions on its surface. Specifically, 10 g of the modified lithium slag matrix sample is weighed, 100 mL of deionized water is added, and the mixture is shaken thoroughly to dissolve the exchangeable beryllium ions on the surface. After filtration, the filtrate is titrated with EDTA standard solution. The calculated molar concentration (CBe) of exchangeable beryllium ions on the surface of this batch of modified lithium slag matrix is ​​0.25 mol per kg. Based on the chemical formula of the target solidification product, beryllium phosphate (Be3(PO4)2), the operator determines the theoretical molar ratio of phosphate to beryllium ions to be 2:3. To ensure complete solidification and deep mineralization of beryllium ions, excess phosphate is introduced to drive the reaction toward the formation of phosphate minerals. Based on empirical parameters determined from previous process experiments, the operators set the stoichiometric coefficient to 1.2. They then substituted this value into the formula for calculating the stoichiometric ratio. Based on the calculated stoichiometry and the measured beryllium ion exposure level, the operator calculated the total number of moles of phosphate slow-release source required for targeted curing. (Moles). Based on calculations, the operator selected triethyl phosphate, which possesses acid-sensitive hydrolysis properties, as the sustained-release source of phosphate. The molecular weight of triethyl phosphate is 182.16 g / mol, therefore 3643.2 g of triethyl phosphate needs to be weighed. Zinc sulfate was selected as the metal cation component. Zinc sulfate can undergo solubility changes at specific pH levels, which helps form a more stable complex phosphate structure in subsequent reactions. The operator weighed 1000 g of zinc sulfate according to the preset ratio, and added 3643.2 g of triethyl phosphate and 1000 g of zinc sulfate sequentially to a mixing tank containing 50 liters of deionized water. The stirrer was turned on and mixed continuously at 200 rpm for 30 minutes until all solids and liquids were completely dissolved and mixed, obtaining the initial solution. The ion activity of this initial solution was measured using an ion activity meter, and the ion activity value at this time was recorded as 250 mV as the stability benchmark value for subsequent monitoring of solution stability. Subsequently, the operators added an acetate-sodium acetate acid-base buffer to the initial solution, while simultaneously monitoring the conductivity changes in real time using a conductivity meter. By adjusting the amount of buffer added, the conductivity of the solution was precisely adjusted to 500 microsiemens per centimeter, ultimately obtaining a mineralized assembly solution with stable physicochemical properties and good ionic compatibility. Through precise analysis and determination of the beryllium ion exposure degree on the modified lithium slag matrix surface, combined with quantitative calculations based on the stoichiometry of the target mineral, the formulation of the phosphate slow-release source and metal cation components in the solidification agent was achieved, providing a high-quality chemical agent basis for subsequent uniform and controllable in-situ crystallization reactions at the lithium slag interface.

[0064] S4. The mineralization assembly solution is mixed with the modified lithium slag matrix through a segmented gradient introduction method, and the hydrogen ion concentration of the system is adjusted to induce in-situ crystallization at the interface to obtain a primary stabilizer.

[0065] Optionally, obtaining the primary stabilizer includes:

[0066] The mineralization assembly solution is added to the modified lithium slag matrix at a flow rate gradient from low to high to obtain a penetrating slurry, which allows mineralization molecules to be directionally adsorbed at the beryllium-rich active interface.

[0067] An acidic conditioning solution determined based on the mineral diagnostic data is injected into the permeation slurry. The hydrolysis reaction of the phosphate slow-release source is triggered by reducing the negative logarithm of the hydrogen ion concentration in the system, thereby obtaining highly active phosphate ions.

[0068] The highly active phosphate ions and beryllium ions are driven to rapidly combine at the interface to form phosphate microcrystals, and the active silicon-aluminum excitation components are guided to undergo a polycondensation reaction around the phosphate microcrystals to obtain a primary stabilizer.

[0069] Specifically, firstly, the mineralization assembly solution is added in stages to the slowly stirred modified lithium slag matrix using a programmable flow pump, following a low-to-high flow gradient. This gradual addition helps the mineralization assembly solution fully penetrate the pores between particles, forming a uniform penetrating slurry. This allows the mineralized molecules, namely phosphate esters and metal cations, to undergo directional adsorption on the beryllium-rich active interface of the lithium slag surface, preparing space for subsequent reactions. After adsorption saturation, an acidic conditioning solution, pre-determined based on mineral diagnostic data, is injected into the penetrating slurry. The purpose of this is to precisely reduce the negative logarithm of the hydrogen ion concentration in the entire system, i.e., the pH value. When the pH value drops to the trigger point for the hydrolysis reaction of the phosphate slow-release source, the phosphate ester molecules rapidly hydrolyze, releasing a large amount of highly reactive phosphate ions. The hydrolysis rate of these phosphate ions is then determined. ,have:

[0070] ;

[0071] in, The rate constant for the hydrolysis reaction was obtained through preliminary kinetic experiments on this batch of lithium slag raw materials. This refers to the concentration of phosphate ester molecules; while This represents the hydrogen ion concentration. Therefore, increasing the hydrogen ion concentration by injecting an acidic conditioning solution can significantly accelerate the phosphate generation rate. These in-situ generated highly reactive phosphate ions immediately and rapidly combine with beryllium ions adsorbed on the interface to form insoluble phosphate microcrystals. Simultaneously, the active silica-alumina excitation component introduced in the previous step undergoes a condensation reaction around the newly generated phosphate microcrystals, forming a silica-alumina gel-like encapsulation layer, ultimately resulting in a doubly locked primary stabilizer.

[0072] For example, 100 kg of modified lithium slag matrix was placed in a mixing vessel equipped with a stirrer. The stirrer was started at a low speed of 30 rpm. 50 liters of mineralization assembly solution were added to the mixing vessel via a peristaltic pump at a linearly increasing flow rate over 30 minutes, from 0.5 liters per minute to 2.5 liters per minute, forming a penetrating slurry. Stirring was continued for 15 minutes to allow adsorption equilibrium. Subsequently, based on the analysis of beryllium occurrence forms and the proportion of amorphous silica-alumina components in the previous mineral diagnostic data, it was calculated that the pH value of the system needed to decrease from the initial 8 to 5 to effectively trigger phosphate ester hydrolysis. Based on this, the type and amount of acidic conditioning solution were determined. Calculations showed that a dilute sulfuric acid solution with a concentration of 1 mol / L was selected as the acidic conditioning solution, with an injection volume of 5 liters. This selection was based on the characteristic that dilute sulfuric acid can rapidly and uniformly lower the pH of the system without causing side reactions in the matrix, which matches the analysis results of the lithium slag mineral composition in the mineral diagnostic data. After rapid injection, the negative logarithm of the hydrogen ion concentration in the system rapidly decreased from 8 to 5. Under these acidic conditions, triethyl phosphate rapidly hydrolyzes, releasing phosphate ions that react with beryllium ions to form invisible beryllium phosphate microcrystals on the surface of lithium slag particles. Subsequently, the aluminosilicate network on the particle surface further cross-links and polymerizes around these microcrystals, ultimately yielding a paste-like material, which serves as the primary stabilizer. Through gradient feeding and a triggered reaction design, the curing reaction was transformed from macroscopic mixing to in-situ generation at the microscopic interface. This reduces the problem of precipitates easily forming in solution and re-adhering to the particle surface, a problem common in traditional methods, thus improving the uniformity and stability of the curing effect.

[0073] Optionally, the method further includes:

[0074] Real-time torque data of the penetrating mortar during dynamic mixing process is obtained to obtain kinetic characteristic values;

[0075] The rotational speed of the mixer is adjusted in real time according to the kinetic characteristic value to keep the micro-shear force of the penetrating mortar within the preset parameter range;

[0076] The microscopic shear force is used to suppress the abnormal aggregation of phosphate microcrystals, resulting in a primary stable body with uniform composition.

[0077] Specifically, this step optimizes the microscopic uniformity of the product by introducing a dynamic mechanical control element during the generation of the primary stabilizer. In the mixer, the dynamic mixing process of the penetrating slurry generates torque, which is acquired in real time by a torque sensor mounted on the mixer's main shaft. This torque data directly reflects the viscosity change and internal flow resistance of the slurry, and therefore serves as a key kinetic characteristic value. This kinetic characteristic value is correlated with the microscopic shear force within the system, and is crucial for calculating the microscopic shear force within the penetrating slurry. ,have:

[0078]

[0079] in, It is a constant determined by the geometry of the mixer, obtained through no-load and load calibration experiments on the mixer; It is the real-time viscosity of the penetrating adhesive, which is directly measured by an online viscometer installed inside the mixer; This refers to the mixer's rotational speed. Because the viscosity of the penetrating slurry changes dynamically during the reaction, the mixer's rotational speed needs to be adjusted in real-time based on the measured kinetic characteristic value, i.e., torque, to maintain the micro-shear force within a preset ideal parameter range. Specifically, the control logic is as follows: when the real-time torque data exceeds the preset upper limit, it indicates that the slurry viscosity has increased or the shear force is too high; in this case, the control system will automatically reduce the rotational speed. Conversely, if the torque is below the lower limit, the rotational speed will be increased. For example... Figure 2 As shown, when the torque (solid line in the figure) exceeds the upper limit of the preset range (dashed line in the figure), the control system immediately reduces the mixer speed (dotted line in the figure), thereby reducing the micro-shear force and inhibiting agglomeration; conversely, the speed decreases. Through this feedback regulation, moderate micro-shear force can be used to break up the forming phosphate microcrystal clusters, inhibiting their abnormal agglomeration, thereby ensuring a uniform distribution of components within the final primary stabilizer.

[0080] For example, during the mixing of the mineralized assembly solution and the modified lithium slag matrix, the mixer's control system is set to a target torque range, such as 20 to 30 Nm. Initially, the slurry is thinner, and the torque is lower, at 22 Nm, at which point the mixer operates at 60 rpm. As the reaction progresses, phosphate crystals begin to form, the slurry viscosity increases, and the sensor detects a torque increase to 32 Nm, exceeding the preset upper limit of 30 Nm. The control system immediately responds, reducing the mixer's speed to 50 rpm, and the torque subsequently drops back to 28 Nm. Throughout the preparation of the primary stabilizer, the system continuously makes such adjustments, ensuring that the microscopic shear force of the slurry remains at a moderate level, guaranteeing thorough mixing of the materials while effectively preventing newly formed microcrystalline particles from agglomerating into large clumps. The resulting primary stabilizer exhibits a highly uniform dispersed structure at the microscale. By introducing a speed control system based on real-time torque feedback, precise control of microscopic forces during mixing is achieved, providing a uniform microstructure precursor for preparing high-quality, high-performance final solidified products.

[0081] S5. Press the primary stabilizer to obtain a molded blank, and place the molded blank in an environment coupled with an alternating electromagnetic field and an internal exothermic source for structural strengthening. Use electromagnetic orientation force and chemical reaction heat to drive the cross-linking of the micro-skeleton and generate beryllium ultrastable mineralized products.

[0082] Optionally, the generation of beryllium ultrastable mineralization products includes:

[0083] Electromagnetic field control parameters are obtained by acquiring the dipole moment distribution characteristics inside the molded blank, and a low-frequency alternating electromagnetic field conforming to the electromagnetic field control parameters is applied to the molded blank.

[0084] The orientation force generated by the low-frequency alternating electromagnetic field induces the microscopic particles inside the primary stabilizer to arrange in an orderly manner, thereby obtaining an oriented structure.

[0085] The energy-releasing components inside the oriented structure are activated to generate a uniformly distributed internal heat source, which drives the oriented structure to undergo deep dehydration and lattice reconstruction, generating beryllium ultrastable mineralization products.

[0086] Specifically, the pressed preform is first sampled, and its internal dipole moment distribution characteristics are measured using techniques such as dielectric spectroscopy analysis. For example, the frequency dependence of its dielectric constant is determined to obtain electromagnetic field control parameters to guide subsequent processing. These parameters mainly include the optimal operating frequency and field strength of the alternating electromagnetic field. Subsequently, the preform is placed in a specially designed electromagnetic field generator, and a low-frequency alternating electromagnetic field conforming to these control parameters is applied. Because the phosphate microcrystals inside the primary stabilizer and the surrounding aluminosilicate polymer network have a certain polarity, i.e., microscopic dipole moments exist, they are subjected to an orientation force under the action of the alternating electromagnetic field. The magnitude of this orientation force moment... ,have:

[0087] ;

[0088] in, It is the dipole moment of a microscopic particle; This is the strength of the applied electric field. In natural language, this vector cross product can be described as the rotational torque acting on a microscopic particle, the magnitude and direction of which depend on the interaction between the particle's own dipole moment and the external electric field strength. This torque drives these microscopic particles to overcome internal friction, rotating and rearranging themselves, transforming them from a previously random and scattered state into a more compact and ordered oriented structure. For example... Figure 3 As shown in sub-figure (a), before the application of an electromagnetic field, microscopic particles with dipole moments, such as phosphate microcrystals and silicon-aluminum polymers, are randomly and scattered, resulting in a loose overall structure. When a low-frequency alternating electromagnetic field with controlled parameters is applied, as shown in sub-figure (b), the particles are subjected to electromagnetic orientation torque, ultimately forming a long-range ordered and highly dense oriented structure. Simultaneously with the formation of the oriented structure, pre-embedded energy-releasing components within the preform are activated, causing them to react and generate a uniformly distributed internal heat source. The high temperature generated by this internal heat source drives deep dehydration of the oriented structure, eliminating physically adsorbed water and some chemically bound water, and promoting lattice reconstruction of the silicon-aluminum network, forming a more dense and stable new mineral phase. This permanently anchors beryllium within the lattice, generating the final beryllium ultrastable mineralized product.

[0089] For example, a primary stabilizer was pressed into several cubic blanks with sides of 10 cm under high pressure. After sampling and analysis, the optimal electromagnetic field control parameters were determined to be a frequency of 100 kHz and an electric field strength of 10 kV per meter. These blanks were placed in a device combining a Helmholtz coil and a parallel-plate capacitor, and a predetermined low-frequency alternating electromagnetic field was applied. Under the influence of the electromagnetic field, the polar particles inside the blanks began to align in an orderly manner. Simultaneously, by controlling the environment, the trace metal additives doped inside the blanks were activated, causing them to slowly oxidize and release heat, resulting in a uniform increase in the internal temperature of the blanks to 300 degrees Celsius within 2 hours. Under the dual effects of this high temperature and electromagnetic orientation, the blanks underwent significant volume shrinkage, resulting in a substantial increase in structural density, ultimately forming a beryllium ultra-stable mineral product as hard as ceramic. By innovatively combining electromagnetic orientation force with internal heat, problems such as cracking and porous structure caused by internal and external temperature differences in traditional sintering or curing processes were solved. The electromagnetic field enables the ordering and densification of the microstructure, while the uniform internal heat source provides the energy for deep chemical reactions and lattice reconstruction. The two work together to achieve a qualitative change in beryllium from physical encapsulation to lattice locking, resulting in a final product with long-term stability and resistance to leaching.

[0090] Optionally, activating the energy-releasing components within the directional structure to generate a uniformly distributed internal heat source includes:

[0091] A metal additive matching the chemical potential of the lithium slag raw material is mixed into the primary stabilizer to obtain an energy alternative.

[0092] The oxygen partial pressure and ambient temperature parameters of the maintenance environment in which the energy candidate is located are adjusted to calculate the reaction triggering condition parameters.

[0093] The metal additive is triggered to undergo a controlled oxidation reaction inside the molded preform using the reaction triggering condition parameters to release heat energy and generate an initial heat release field.

[0094] The dynamic data of the temperature gradient caused by the initial heat release field inside the molded blank are collected, and the ambient temperature parameters are adjusted in real time to smooth out heat release fluctuations and generate a uniformly distributed internal heat source.

[0095] Specifically, in the later stages of preparing the primary stabilizer, a special metal additive needs to be mixed in, such as ultrafine aluminum powder with a particle size range of 1-10 micrometers, or ultrafine iron powder with a particle size range of 5-15 micrometers. The choice of metal additive depends on its chemical potential needing to match the matrix environment of the lithium slag raw material, ensuring it does not react at room temperature and pressure, but can be effectively activated under specific conditions. The material system after incorporating the metal additive is the energy candidate. This system is in a metastable state at room temperature and pressure, and the metal additive does not undergo significant oxidation. When the ambient temperature and oxygen partial pressure reach the preset triggering conditions, the metal additive can undergo a controlled oxidation reaction inside the green body, becoming a uniformly distributed internal heat source. Next, to precisely control the reaction, the curing environment of the energy candidate needs to be adjusted, with the key parameters being the oxygen partial pressure and ambient temperature. A reaction triggering condition parameter can be obtained through thermodynamic calculations based on the Gibbs free energy criterion. The Gibbs free energy change of the reaction... ,have:

[0096] ;

[0097] in, R is the standard Gibbs free energy change; T is the ideal gas constant; T is the ambient temperature parameter; and Q is the reaction quotient, whose value is directly related to the oxygen partial pressure parameter. When the calculated Gibbs free energy change is negative, the reaction will spontaneously start. Therefore, the reaction triggering condition parameters are a set of temperature and oxygen partial pressure combinations that make ΔG less than zero. Using this set of parameters, a controlled oxidation reaction of the metal additives can be precisely triggered inside the formed blank, thereby releasing heat energy and generating an initial heat release field. To avoid local heat accumulation leading to uneven temperature, multiple miniature thermocouples need to be arranged inside the blank to collect dynamic data of the temperature gradient caused by the initial heat release field in real time. This data is fed back to the control system, which adjusts the external ambient temperature parameter in real time according to the changes in the temperature gradient. For example, if the temperature rises too quickly at a certain point inside, the ambient temperature is lowered to slow down the reaction rate at that point, thereby smoothing out heat release fluctuations and ultimately generating a uniformly distributed internal heat source throughout the entire formed blank.

[0098] For example, 1% by weight of ultrafine aluminum powder is uniformly incorporated into a primary stabilizer to obtain an energy candidate body, which is then pressed into shape. Calculations show that the oxidation reaction of the aluminum powder will be triggered when the ambient temperature reaches 150 degrees Celsius and the oxygen partial pressure is 0.5 atmospheres. Therefore, the formed blank is placed in a curing kiln with precisely controlled temperature and atmosphere. The ambient temperature is set to 150 degrees Celsius, and a mixture of oxygen and nitrogen is introduced into the kiln to achieve an oxygen partial pressure of 0.5 atmospheres. The aluminum powder inside the blank begins to oxidize and release heat. An internal sensor array monitors that the temperature rise rate at the center of the blank is faster than at the edges, with a temperature difference of 20 degrees Celsius. The control system immediately lowers the ambient temperature of the curing kiln to 145 degrees Celsius, slowing the reaction rate at the center while ensuring the reaction continues at the edges.

[0099] Based on the same inventive concept, such as Figure 4 As shown, the present invention also provides a lithium slag harmless treatment and beryllium ultra-stable mineralization system with agent-slag synergy, comprising:

[0100] The parameter diagnostic solution preparation module is used to obtain the phase parameters and beryllium occurrence parameters of the lithium slag raw material to obtain mineral diagnostic data, and to dissolve the active silicon-aluminum activating components according to the ratio determined by the mineral diagnostic data to obtain the structure activation solution.

[0101] The synchronous activation and modification module is used to introduce the lithium slag raw material and the structural activation liquid into the grinding chamber for synchronous mechanochemical activation. The newly formed interface generated by the collision of the grinding media adsorbs the active silicon-aluminum activation components to reconstruct the interface and generate a modified lithium slag matrix with a beryllium-rich active interface.

[0102] A mineralization solution targeted formulation module is used to obtain the exposure degree of beryllium ions in the modified lithium slag matrix, and formulate a mineralization assembly solution containing a phosphate slow-release source and metal cation components based on the stoichiometric ratio determined by the exposure degree.

[0103] The in-situ crystallization stabilization module is used to mix the mineralization assembly liquid with the modified lithium slag matrix through a segmented gradient introduction method, and adjust the hydrogen ion concentration of the system to induce in-situ crystallization at the interface to obtain a primary stabilizer.

[0104] The coupling cross-linking strengthening module is used to press the primary stabilizer to obtain a molded blank, and place the molded blank in an environment coupled with an alternating electromagnetic field and an internal exothermic source for structural strengthening. The cross-linking of the micro-skeleton is driven by electromagnetic orientation force and chemical reaction heat to generate beryllium ultrastable mineralization products.

[0105] It should be noted that the electrical connections between the various units described above do not necessarily represent direct or indirect connections. Any indirect connection method can be applied to the embodiments of the present invention as long as it achieves the purpose of the present invention. The above descriptions are merely exemplary embodiments of the present invention and should not be construed as limiting the scope of the present invention.

[0106] All equivalent changes and modifications made in accordance with the teachings of this invention are still within the scope of this invention. Those skilled in the art will readily conceive of other embodiments of this invention upon considering the specification and the disclosure of practical truth. This application is intended to cover any variations, uses, or adaptations of this invention that follow the general principles of this invention and include common knowledge or conventional techniques in the art not described herein.

Claims

1. A method for harmless treatment of lithium slag and ultra-stable mineralization of beryllium through agent-slag synergy, characterized in that, The method includes: The phase parameters and beryllium occurrence parameters of the lithium slag raw material are obtained to obtain mineral diagnostic data. The active silicon-aluminum activating components are dissolved according to the ratio determined by the mineral diagnostic data to obtain the structure activating solution. The lithium slag raw material and the structure activation liquid are introduced into the grinding chamber for simultaneous mechanochemical activation. The newly formed interface generated by the collision of the grinding media adsorbs the active silicon-aluminum activation components to reconstruct the interface and generate a modified lithium slag matrix with a beryllium-rich active interface. The exposure level of beryllium ions in the modified lithium slag matrix was obtained, and a mineralization assembly solution containing a phosphate slow-release source and a metal cation component was prepared based on the stoichiometric ratio determined by the exposure level. The mineralization assembly solution was mixed with the modified lithium slag matrix through a segmented gradient introduction method, and the hydrogen ion concentration of the system was adjusted to induce in-situ crystallization at the interface to obtain a primary stabilizer. The primary stabilizer is pressed to obtain a preform, and the preform is placed in an environment coupled with an alternating electromagnetic field and an internal exothermic source for structural strengthening. The cross-linking of the micro-skeleton is driven by electromagnetic orientation force and chemical reaction heat to generate beryllium ultrastable mineralization products.

2. The method for harmless lithium slag treatment and beryllium ultra-stable mineralization by agent-slag synergy according to claim 1, characterized in that, The mineral diagnostic data obtained by acquiring the phase parameters and beryllium occurrence parameters of the lithium slag raw material includes: The collected crude lithium slag is dried until the moisture content is lower than the predetermined threshold of the process to obtain dry slag; The dry slag is fed into a crushing and grading equipment for physical diameter reduction and screening to obtain lithium slag raw material. The phase parameters and beryllium occurrence parameters of the lithium slag raw material were collected to obtain mineral diagnostic data.

3. The method for harmless lithium slag treatment and beryllium ultra-stable mineralization by agent-slag synergy according to claim 1, characterized in that, The obtained structure-activating liquid includes: The dissolution ratio of the active silicon-aluminum activating component is calculated using the mineral diagnostic data, and the active silicon-aluminum activating component is dissolved to obtain a structure activating solution.

4. The method for harmless lithium slag treatment and beryllium ultra-stable mineralization by agent-slag synergy according to claim 1, characterized in that, The modified lithium slag matrix with a beryllium-rich active interface includes: The proportion of amorphous components in the lithium slag was determined by analyzing the mineral diagnostic data, and the excitation liquid flow rate parameters were obtained. The structure-activating liquid is atomized according to the activation liquid flow parameters to generate an atomized structure-activating liquid; The grinding chamber is activated to perform high-energy pulverization of the lithium slag raw material. At the instant the surface of the newly formed particles is generated, the atomized structure-activating liquid is applied to cover the surface of the newly formed particles to obtain a wet interface layer. By continuously inputting mechanical force, the wet interface layer is driven to break chemical bonds, causing beryllium ions to migrate to the particle surface and combine with the excitation component, thereby generating a modified lithium slag matrix with a beryllium-rich active interface.

5. The method for harmless lithium slag treatment and beryllium ultra-stable mineralization by agent-slag synergy according to claim 1, characterized in that, The preparation of the mineralization assembly solution containing a phosphate slow-release source and a metal cation component includes: The surface activity state of the modified lithium slag matrix was analyzed to obtain the exposure degree of beryllium ions, and the ion ratio required for targeted solidification was calculated to obtain the stoichiometric ratio. According to the stoichiometric ratio, phosphate ester organic compounds with acid-sensitive hydrolysis characteristics are selected as phosphate slow-release sources, and metal salts with solubility changes under specific pH conditions are selected as metal cation components. The solutions are then dissolved to obtain the initial solution. The ion activity of the initial solution was measured to obtain a stability baseline value, and an acid-base buffer was added to adjust the conductivity of the initial solution to obtain a mineralized assembly solution.

6. The method for harmless lithium slag treatment and beryllium ultra-stable mineralization by agent-slag synergy according to claim 1, characterized in that, The obtained primary stabilizer includes: The mineralization assembly solution is added to the modified lithium slag matrix at a flow rate gradient from low to high to obtain a penetrating slurry, which allows mineralization molecules to be directionally adsorbed at the beryllium-rich active interface. An acidic conditioning solution determined based on the mineral diagnostic data is injected into the permeation slurry. The hydrolysis reaction of the phosphate slow-release source is triggered by reducing the negative logarithm of the hydrogen ion concentration in the system, thereby obtaining highly active phosphate ions. The highly active phosphate ions and beryllium ions are driven to rapidly combine at the interface to form phosphate microcrystals, and the active silicon-aluminum excitation components are guided to undergo a polycondensation reaction around the phosphate microcrystals to obtain a primary stabilizer.

7. The method for harmless lithium slag treatment and beryllium ultra-stable mineralization by agent-slag synergy according to claim 6, characterized in that, The method further includes: Real-time torque data of the penetrating mortar during dynamic mixing process is obtained to obtain kinetic characteristic values; The rotational speed of the mixer is adjusted in real time according to the kinetic characteristic value to keep the micro-shear force of the penetrating mortar within the preset parameter range; The microscopic shear force is used to suppress the abnormal aggregation of phosphate microcrystals, resulting in a primary stable body with uniform composition.

8. The method for harmless lithium slag treatment and beryllium ultra-stable mineralization by agent-slag synergy according to claim 1, characterized in that, The generated beryllium ultrastable mineralization products include: Electromagnetic field control parameters are obtained by acquiring the dipole moment distribution characteristics inside the molded blank, and a low-frequency alternating electromagnetic field conforming to the electromagnetic field control parameters is applied to the molded blank. The orientation force generated by the low-frequency alternating electromagnetic field induces the microscopic particles inside the primary stabilizer to arrange in an orderly manner, thereby obtaining an oriented structure. The energy-releasing components inside the oriented structure are activated to generate a uniformly distributed internal heat source, which drives the oriented structure to undergo deep dehydration and lattice reconstruction, generating beryllium ultrastable mineralization products.

9. The method for harmless lithium slag treatment and beryllium ultra-stable mineralization by agent-slag synergy according to claim 8, characterized in that, The process of activating the energy release components inside the directional structure to generate a uniformly distributed internal heat source includes: A metal additive matching the chemical potential of the lithium slag raw material is mixed into the primary stabilizer to obtain an energy alternative. The oxygen partial pressure and ambient temperature parameters of the maintenance environment in which the energy candidate is located are adjusted to calculate the reaction triggering condition parameters. The metal additive is triggered to undergo a controlled oxidation reaction inside the molded preform using the reaction triggering condition parameters to release heat energy and generate an initial heat release field. The dynamic data of the temperature gradient caused by the initial heat release field inside the molded blank are collected, and the ambient temperature parameters are adjusted in real time to smooth out heat release fluctuations and generate a uniformly distributed internal heat source.

10. A synergistic lithium slag harmless treatment and beryllium ultrastable mineralization system, applied to the synergistic lithium slag harmless treatment and beryllium ultrastable mineralization method as described in any one of claims 1-9, characterized in that, The system includes: The parameter diagnostic solution preparation module is used to obtain the phase parameters and beryllium occurrence parameters of the lithium slag raw material to obtain mineral diagnostic data, and to dissolve the active silicon-aluminum activating components according to the ratio determined by the mineral diagnostic data to obtain the structure activation solution. The synchronous activation and modification module is used to introduce the lithium slag raw material and the structural activation liquid into the grinding chamber for synchronous mechanochemical activation. The newly formed interface generated by the collision of the grinding media adsorbs the active silicon-aluminum activation components to reconstruct the interface and generate a modified lithium slag matrix with a beryllium-rich active interface. A mineralization solution targeted formulation module is used to obtain the exposure degree of beryllium ions in the modified lithium slag matrix, and formulate a mineralization assembly solution containing a phosphate slow-release source and metal cation components based on the stoichiometric ratio determined by the exposure degree. The in-situ crystallization stabilization module is used to mix the mineralization assembly liquid with the modified lithium slag matrix through a segmented gradient introduction method, and adjust the hydrogen ion concentration of the system to induce in-situ crystallization at the interface to obtain a primary stabilizer. The coupling cross-linking strengthening module is used to press the primary stabilizer to obtain a molded blank, and place the molded blank in an environment coupled with an alternating electromagnetic field and an internal exothermic source for structural strengthening. The cross-linking of the micro-skeleton is driven by electromagnetic orientation force and chemical reaction heat to generate beryllium ultrastable mineralization products.

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