Method for high-efficiency beryllium precipitation from beryllium-containing lithium smelting brine

Abstract

This invention discloses a method for efficient beryllium precipitation from beryllium-lithium smelting brine, belonging to the field of beryllium resource recovery technology. The method involves adjusting the temperature of the beryllium-lithium smelting brine to an appropriate range, then slowly and uniformly adding a hydroxyl ligand regulator under shear stress until the pH of the solution stabilizes within a suitable range. The temperature and shear stress are maintained to allow for a maturation reaction, resulting in a matured slurry. This matured slurry undergoes solid-liquid separation to obtain beryllium hydroxide and a beryllium-de-precipitated lithium-containing filtrate. This method overcomes the bottleneck of traditional neutralization precipitation methods, which easily trap valuable metals such as lithium and potassium. The generated beryllium precipitate has high crystallinity, low water content, and is easily separated from the solid, with an extremely high beryllium grade (>3%). It can be directly sold or reused as a high-value beryllium concentrate raw material. This method achieves the unity of source harmlessness and high-value resource utilization of highly toxic beryllium-containing wastewater, and has strong process compatibility, low operating costs, and industrial production value.

Description

Technical Field

[0001] This invention relates to a method for recovering beryllium from beryllium-containing lithium smelting brine, and particularly to a method for efficiently recovering and extracting free beryllium from high-salt, complex beryllium-containing lithium smelting brine based on multi-dimensional condition synergistic regulation, and for achieving long-term stabilization and high-value utilization of beryllium-containing solid waste / wastewater, belonging to the field of beryllium resource recovery technology. Background Technology

[0002] Beryllium metal has excellent characteristics such as low density, high specific strength and high stability. It is an indispensable and valuable metal raw material in nuclear energy, rockets, missiles, aviation, robotics and metallurgical industries. It is widely used in high-precision technologies such as nuclear reactor materials, aerospace, beryllium copper alloys and X-ray transmission windows.

[0003] Beryllium is extremely rare in the Earth's crust, and due to the Earth's element affinity principle, these industrial beryllium ores are highly dispersed and unevenly distributed. Although more than 100 beryllium-containing minerals are currently known, only beryl, chrysoberyl, and hydroxyl-beryllite have industrial value. Furthermore, beryllium is often found in associated deposits of light elements such as lithium and fluorite. Therefore, the mining, beneficiation, smelting, and subsequent material processing of beryllium, lithium, and fluorite ores inevitably generate beryllium-contaminated brines. The content of free beryllium exceeds national standards, leading to strict restrictions on the discharge of industrial wastewater and the storage or disposal of waste residue. This has become a bottleneck problem for the sustainable development of the beryllium, lithium, and fluorine industries.

[0004] Beryllium and its compounds are extremely toxic and are classified as a Category I pollutant. The migration and accumulation of beryllium in the environment leads to soil degradation, water pollution, and adversely affects plant growth and aquatic life. Beryllium pollution in soil affects soil microbial communities and disrupts nutrient cycling, thus impacting ecosystem health and productivity. Long-term human exposure to beryllium, even at low concentrations, can lead to related chronic diseases. Beryllium ions can bind to proteins and enzymes, disrupting cellular function, causing cell dysfunction and damage, leading to organ or tissue lesions and potentially cancer. Currently, there is no effective treatment for beryllium poisoning.

[0005] In existing technologies, conventional methods for recovering beryllium from beryllium-containing wastewater mainly employ traditional acid-base neutralization and sedimentation. However, for beryllium-containing lithium smelting brine, it typically presents a high-salt environment (rich in high concentrations of Li). + Na + K + SO4 2-Beryllium (BY), with its extremely high ionic strength and complex coordination environment, makes it difficult to achieve highly selective precipitation and efficient separation from lithium, potassium, and other metals using traditional acid-base neutralization methods, resulting in low BY recovery rates. In traditional, extensive alkali neutralization processes: on the one hand, it easily leads to excessively high local alkali concentrations in the solution system, generating instantaneously high supersaturation. This results in the generated BY precipitate being an amorphous colloidal mud-water mixture with extremely high water content and poor crystallinity, making solid-liquid separation extremely difficult. On the other hand, this amorphous, flocculent precipitate severely encapsulates and traps high-value alkali metal ions such as lithium and potassium in the brine, not only causing a huge waste of lithium resources but also resulting in low-grade precipitate (beryllium slag), which is usually considered hazardous waste and stored as such, incurring high costs for hazardous waste disposal and silo construction, and failing to achieve effective recovery of BY resources. Summary of the Invention

[0006] To address the technical problems in existing technologies for treating beryllium-containing lithium smelting brine generated during beryllium, lithium, and fluorine resource production processes, such as large slag volume, severe impurity entrainment, difficulty in solid-liquid separation, and low beryllium recovery rate, the present invention aims to provide a method for efficient beryllium precipitation from beryllium-containing lithium smelting brine. This method involves multi-dimensional synergistic regulation of the thermodynamics, kinetics, and reaction chemistry of the beryllium-containing lithium smelting brine, inducing beryllium ions in the brine to undergo deprotonation and directional rearrangement into a highly crystalline, low-water-content, and low-impurity beryllium hydroxide solid phase. This method breaks through the bottleneck of traditional simple neutralization precipitation, which easily leads to the inclusion of valuable metals such as lithium and potassium. The generated beryllium precipitate has good crystallinity, is easy to separate from solid and liquid, and has an extremely high beryllium grade (>3%), which can be directly sold or reused as a high-value beryllium concentrate raw material. This method achieves the unity of source harmlessness and high-value resource utilization of highly toxic beryllium-containing wastewater, and has strong process compatibility, low operating cost, and extremely high industrial promotion and economic value.

[0007] To achieve the above-mentioned technical objectives, the present invention provides a method for efficient precipitation of beryllium from lithium beryllium smelting brine. The method involves adjusting the lithium beryllium smelting brine to 20°C to 70°C, then slowly and uniformly adding a hydroxyl ligand regulator under shearing until the final pH of the solution system stabilizes in the range of 8.0 to 10.5, and maintaining the temperature and shearing to carry out a maturation reaction to obtain a matured slurry. The matured slurry is then subjected to solid-liquid separation to obtain beryllium hydroxide product and de-beryllium lithium-containing filtrate.

[0008] The present invention provides a method for treating beryllium-lithium smelting brine, aiming to remove free beryllium elements (including Be) from the brine. 2+ Be(OH)4 2-This invention achieves the superstabilization of beryllium-containing lithium smelting brine and its high-grade enrichment, resulting in a beryllium content greater than 3% in the treated beryllium-containing mineralized slag, while reducing the loss of high-value metal elements such as lithium ions during beryllium precipitation. The treatment of beryllium-containing lithium smelting brine involves first adjusting the temperature of the brine to a range of 20℃ to 70℃, particularly controlling it at 30℃ to 40℃. This fully utilizes the thermal field to disrupt the hydrogen bond network of solvent water molecules, lowering the desorption energy barrier of the free beryllium ion hydration layer, and simultaneously accelerating the polymerization rate of polynuclear hydroxyl-bridged complexes with fluid shear force. Based on this, the slow and uniform addition of hydroxyl ligand regulators (NaOH solution) precisely controls local supersaturation, avoiding explosive homogeneous nucleation. Under the synergistic effect of shear force and thermal field, OH... - It easily penetrates the hydration layer of beryllium ions, inducing Be 2+ The process preferentially forms a polynuclear hydroxyl complex transition state and performs heterogeneous growth on existing crystal nuclei. Furthermore, by precisely controlling the endpoint pH within the range of 8.0–10.5, the formation of higher-order soluble beryllium salt complexes [Be(OH)4] is avoided. 2- The secondary dissolution ensures deep deprotonation, and the final temperature and stirring are maintained for ripening. Utilizing the Oswald ripening effect, primary nanoscale nuclei merge, causing topological rearrangement of the crystal lattice and directional transformation into a high-density Be(OH)₂ solid phase, while also achieving impurity repulsion. This polymeric beryllium hydroxide with a dense crystalline structure effectively repels Li₂ during its growth. + Na + K + Lattice doping and surface adsorption of monovalent alkali metal ions.

[0009] The key to this invention's treatment method for beryllium-lithium smelting brine lies in overcoming the limitations of traditional neutralization and precipitation phase equilibrium. It proposes a method based on homogeneous nucleation and polynuclear hydroxyl-bridged complexation kinetics to precisely regulate beryllium precipitation. This invention breaks the original solid-liquid phase thermodynamic equilibrium by precisely controlling the thermodynamic steady-state range of the beryllium-lithium smelting brine system. In this microscopic process, an appropriate amount of OH... - Inducing Be 2+ Deprotonation occurs, and polynuclear hydroxyl complexes (such as Be3(OH)3) are preferentially formed. 3+ (Transition state). As the concentration of hydroxide ions in the solution steadily increases, the driving force of the system overcomes the nucleation energy barrier, promoting the rearrangement of coordination bonds. Free beryllium ions are directionally converted into high-density Be(OH)₂ solid precipitate through a hydroxyl-bridged polymerization network. This process optimizes the aggregation kinetics of colloidal particles by controlling the reaction temperature (room temperature to 80℃) and time (30–120 min), effectively inhibiting the aggregation of Li. + Na + K +The lattice doping and surface adsorption of alkali metal ions, while achieving ultra-stabilization of toxic beryllium, significantly improve the grade of beryllium in beryllium slag and the economic value of subsequent resource utilization.

[0010] The hydroxyl ligand modifier of the present invention is added by slow dripping or multi-point distribution (e.g., atomized spraying).

[0011] As a preferred embodiment, the concentration of beryllium in the beryllium-lithium smelting brine is 0.01~0.1 g / L, the concentration of lithium is 1.0~5.0 g / L, the concentration of potassium is 5.0~20.0 g / L, the concentration of sodium is 10.0~30.0 g / L, the concentration of calcium is 0.1~1.0 g / L, the concentration of magnesium is 0.1~1.0 g / L, and the concentration of manganese is 0.1~1.0 g / L.

[0012] As a preferred embodiment, the beryllium-lithium smelting brine originates from high-salt waste liquid or slurry filtrate generated during the mining, beryllium ore, or fluorite ore processing. This high-salt waste liquid or slurry filtrate is rich in alkali metal ions (Li). + Na + K + wait.

[0013] As a preferred embodiment, the temperature of the beryllium-lithium smelting brine is adjusted to 30℃~40℃. Precipitation of beryllium ions within this preferred temperature range yields high-density beryllium hydroxide precipitate with high crystallinity and low content of impurities such as lithium, potassium, and sodium ions, while also improving beryllium recovery rate.

[0014] As a preferred embodiment, the shearing rate is 200~400 r / min.

[0015] As a preferred embodiment, the hydroxyl ligand modifier is an alkali metal hydroxide solution. Specifically, examples include sodium hydroxide solution and potassium hydroxide solution.

[0016] As a preferred embodiment, the concentration of the alkali metal hydroxide solution is 1~5 mol / L.

[0017] As a preferred embodiment, the amount of the hydroxyl ligand modifier added is 1.0~2.5% of the volume of the beryllium lithium smelting brine, and the addition rate is controlled to be completed within 30~120 minutes.

[0018] As a preferred embodiment, the amount of the hydroxyl ligand modifier added is 1.5~2.0% of the volume of the beryllium-lithium smelting brine. The higher the amount of hydroxyl ligand modifier added, the higher the amount of beryllium hydroxide precipitate, but the lower the beryllium grade in the beryllium hydroxide precipitate.

[0019] As a preferred embodiment, the endpoint pH is stabilized within the range of 8.5 to 9.5. Further stabilizing the endpoint pH within the range of 8.5 to 9.5 not only achieves efficient precipitation of beryllium but also effectively inhibits the conversion of amphoteric beryllium hydroxide into water-soluble [Be(OH)4]. 2- Secondary reverse dissolution of complex ions.

[0020] As a preferred embodiment, the ripening reaction time is 30-60 minutes.

[0021] The deberyllium lithium-containing filtrate of the present invention contains reusable metal ions, such as lithium ions, which can be recycled back into the beryllium precipitation process.

[0022] Compared with the prior art, the technical solution of the present invention brings the following beneficial effects:

[0023] 1) This invention breaks through the technical bottleneck of traditional high-salt wastewater treatment. By precisely inducing the deprotonation and polynuclear hydroxyl-bridged polymerization of beryllium ions within a specific thermodynamic window, the highly toxic and highly mobile free beryllium is directionally transformed into a highly crystalline and ultra-stable inorganic polymer-type beryllium hydroxide mineralized solid phase. This process not only fundamentally blocks the ecological and environmental migration risks of beryllium and completely solves the pollution hazards of wastewater, but also achieves highly selective enrichment of beryllium resources.

[0024] 2) This invention only requires the use of conventional alkali metal hydroxides as hydroxyl donors to precipitate beryllium, which has extremely high versatility. It does not require the introduction of expensive, complex and difficult-to-degrade organic precipitants or extractants, thus avoiding the introduction of new organic carbon sources and impurity substrates into high-salt brine from the source. It realizes a green closed-loop process in a pure inorganic system and completely eliminates secondary environmental pollution.

[0025] 3) The present invention operates under mild conditions during the precipitation of beryllium. The nucleation and crystal growth of beryllium hydroxide can proceed spontaneously and efficiently under conventional shearing and low temperature conditions. The generated solid particles are large and highly crystalline. The solid-liquid separation throughput is large and the resistance is low. The overall process does not rely on harsh equipment such as high pressure and extreme corrosion protection. It exhibits low operating energy consumption and high scale-up stability. It can be seamlessly coupled with existing hydrometallurgical salt-rich wastewater treatment production lines for lithium, zinc and other metallurgical processes, and has industrial promotion value.

[0026] 4) This invention can obtain beryllium hydroxide precipitate with extremely high beryllium grade (beryllium mass fraction exceeding 3%, and even reaching 3.6% or more), low water content, and fully meet the standards of commercially available industrial-grade beryllium hydroxide concentrate / enriched material, while the traditional alkaline precipitation process of beryllium hydroxide can only produce hazardous waste slurry.

[0027] 5) The present invention has a low loss rate of useful metals such as lithium during the precipitation of beryllium, and can retain valuable metals such as lithium and potassium in the brine, which greatly improves the recovery rate of the main lithium smelting process and solves the problem of large-scale adsorption and entrainment of lithium ions in the precipitation of beryllium in the traditional process. Attached Figure Description

[0028] Figure 1 This refers to the yield of beryllium precipitate and the content of beryllium and alkali metals in the beryllium precipitate under different amounts of hydroxyl ligand modifiers in Example 1.

[0029] Figure 2 The image shows the XRD pattern of the beryllium precipitate in Example 2. Detailed Implementation

[0030] The following embodiments are intended to further illustrate the content of the present invention, but are not intended to limit the scope of protection of the claims of the present invention.

[0031] Example 1

[0032] A beryllium-containing lithium brine (Be 0.05 g / L, Li 3.957 g / L, K 16.737 g / L, Na 21.769 g / L, Mn 1.360 g / L, Ca 0.624 g / L, Mg 0.520 g / L, Pb 0.001 g / L, Fe 0.0002 g / L, Zn 0.0003 g / L) produced by a lithium smelting enterprise in Chenzhou, Hunan Province, was prepared. A 1 mol / L sodium hydroxide solution was used as a ligand modifier. This ligand modifier was uniformly introduced into 1 L of slightly neutral (pH approximately 6.95) beryllium-containing lithium brine at a ratio of 12.5–25 mL / L. This addition ratio precisely matched the coordination equivalent of free beryllium ions in the beryllium-containing lithium brine, maintaining a local homogeneous supersaturation of the system. Under a shear flow field of 25℃ and 300 r / min, the hydrated beryllium complex ions in the system gradually dehydrate and crosslink, undergoing a 30-minute ripening reaction to fully complete the lattice transformation to the beryllium hydroxide solid phase. Subsequently, solid-liquid separation is performed. At this point, the multi-ion equilibrium in the brine has been reconstructed, with beryllium efficiently solidified in the precipitate, while valuable metals such as lithium and potassium remain stably retained in the liquid phase. Analysis of the beryllium, lithium, potassium, and sodium contents in the beryllium precipitate under different conditions shows that the beryllium content in the filter residue is high, possessing economic value, and has little impact on the valuable metals in the brine, demonstrating the superiority of this invention for the comprehensive recovery and utilization of beryllium.

[0033] As shown in Tables 1 and 2, at the optimal addition amount, the resulting precipitate not only yields a considerable amount but also has a high beryllium grade (2.217%~6.436%) and a recovery rate (41.19%~97.97%). In particular, by controlling the amount of ligand regulator within the range of 15.0~20.0 mL to adjust the pH of the system within the range of 8.65~9.12, the resulting precipitate simultaneously possesses both high grade and high recovery rate, exhibiting extremely high commercial recovery value. Meanwhile, the lithium inclusion ratio in the slag is maintained at only about 1%, proving that this process has minimal impact on the valuable lithium metal in the brine.

[0034] Table 1. Grade of beryllium products from beryllium-containing lithium brine at different amounts of hydroxyl ligand modifiers.

[0035]

[0036] Table 2. Beryllium recovery rate of beryllium-containing lithium brine under different amounts of hydroxyl ligand modifiers.

[0037]

[0038] Table 1 shows that adding 15 mL of 1 mol / L sodium hydroxide solution resulted in the best beryllium precipitation. Further, by fixing the amount of 1 mol / L sodium hydroxide solution added at 15 mL, and using a shear flow field of 300 r / min and a ripening reaction time of 30 min, the effect of different temperatures on beryllium yield was verified. The results are shown in Table 3. The obtained beryllium concentrate slag not only had a high beryllium grade (3.604%~2.348%) but also a high recovery rate (81.29%~98.03%), possessing extremely high commercial recovery value. Especially at temperatures of 30~40℃, the yield and beryllium grade of the beryllium concentrate slag were high. Simultaneously, the content of lithium and other valuable metals in the beryllium concentrate slag did not change significantly, proving that this process resulted in minimal loss of lithium and other valuable metals from the brine.

[0039] Table 3. Effect of beryllium precipitation in beryllium-containing lithium brine at different temperatures.

[0040]

[0041] Example 2

[0042] A 20-liter pilot-scale lithium smelting process using beryllium-lithium brine was employed (see Example 1 for details). To verify the method's resistance to impurity encapsulation in the alkaline extreme range, a 1 mol / L sodium hydroxide solution was prepared as a ligand regulator and slowly pumped into the brine at a ratio of 15 mL / L, precisely locking the system's endpoint pH at 8.65. At this high pH boundary, the coordination environment of beryllium ions is in a critical thermodynamic state of amphoteric transformation. By maintaining a constant temperature of 30°C and a fluid shear force of 300 r / min, the [Be(H₂O)₄] within the system is induced to... 2+Deep deprotonation occurs. The ripening reaction proceeds for 30 minutes, utilizing the Oswald ripening effect to cause the primary nano-sized beryllium hydroxide crystal nuclei to engulf each other, growing into a dense, large-particle solid phase. After solid-liquid separation, 19.92 g of filter residue is obtained. Analysis shows that even under high liquid volume and high hydroxide concentration, the transformation of Be(OH)₂ into water-soluble [Be(H₂O)₄] is effectively inhibited. 2- Through secondary reverse dissolution, the beryllium mass fraction in the beryllium precipitate reached as high as 3.55%, achieving efficient liquid-solid phase separation in a high-salt system. Moreover, such high-grade beryllium-containing filter residue has enormous economic value and has reached the point where it can be sold.

[0043] Example 3

[0044] A lithium smelting company in Yichun, Jiangxi Province, took 50 liters of beryllium-containing lithium brine (brine pH 7.11, beryllium content 55.20 mg / L, lithium content 4.275 g / L, and also contained other elements such as sodium and potassium). The brine system was kept constant at 30°C, and then 1 mol / L sodium hydroxide solution was added dropwise at a ratio of 15 mL / L to control the pH at reconstructed equilibrium at 8.56. In the 30°C system, the hydrogen bond network of the solvent water molecules was partially disrupted, lowering the desorption energy barrier of the free beryllium ion hydration layer. High-frequency molecular collisions greatly accelerated the polymerization rate of the polynuclear hydroxy-bridged complex. After the reaction continued for 30 minutes, the cross-linking polymerization reaction in the system rapidly overcame the homogeneous nucleation barrier, generating an inorganic polymer-type beryllium hydroxide precipitate with higher crystallinity and lower water content. After thickening and solid-liquid separation, the resulting beryllium precipitate not only yielded a large quantity (98.79 g), but also exhibited significantly reduced filtration resistance, with the beryllium content remaining stable at around 3.37%. This example fully demonstrates the process robustness and kinetic advantages of the present invention in high-temperature, large-scale industrial applications.

[0045] Example 3

[0046] One hundred liters of beryllium-containing lithium brine (initial pH approximately 7.23, beryllium content 60.80 mg / L, lithium content 4.608 g / L, and also containing other elements such as sodium and potassium) was collected from a lithium smelting enterprise in Bayingolin Mongol Autonomous Prefecture, Xinjiang, and placed in a pilot-scale reactor equipped with a flow guide baffle. The system was kept at a constant temperature of 30°C. A 1 mol / L sodium hydroxide solution was prepared as a ligand regulator and slowly introduced at a ratio of 12 mL / L through a multi-point spray distributor to lock the final steady-state pH of the system at 8.72. In this 100-liter scale-up system, to overcome the large-volume mass transfer delay, the stirring rate was adjusted to 300 r / min to match the macroscopic fluid shear force with the microscopic hydroxyl-bridged polymerization kinetics. After 30 minutes of deep maturation, the free beryllium ions in the system underwent complete deprotonation and lattice topological rearrangement driven by homogeneous supersaturation. Rapid solid-liquid separation was performed using a filter press, resulting in a dense beryllium filter cake with extremely low water content. The test results showed that the beryllium mass fraction in the beryllium precipitate reached 3.43%, and 205.05g of filter residue was produced per 100 liters of brine. This example fully demonstrates that, in large-volume, complex, high-salt systems, through precise control of the phase change thermodynamic boundary, it is still possible to achieve ultra-stable mineralization of beryllium poisoning ions and efficient interception of valuable alkali metals, possessing outstanding engineering potential for direct integration into industrial-scale continuous production.

Claims

1. A method for efficient removal of beryllium from beryllium-containing lithium metallurgical brine, characterized in that: The temperature of the beryllium-lithium smelting brine is adjusted to 20℃~70℃, and then a hydroxyl ligand regulator is slowly and uniformly added under shearing until the pH of the solution system stabilizes in the range of 8.0~10.

5. The temperature and shearing are maintained to carry out the aging reaction, and an aging slurry is obtained. The aging slurry is then subjected to solid-liquid separation to obtain beryllium hydroxide product and beryllium-de-lithium-containing filtrate.

2. The method for high-efficiency precipitation of beryllium in a beryllium-lithium-containing brine according to claim 1, characterized in that: The concentration of beryllium in the beryllium-lithium smelting brine is 0.01~0.1 g / L, the concentration of lithium is 1.0~5.0 g / L, the concentration of potassium is 5.0~20.0 g / L, the concentration of sodium is 10.0~30.0 g / L, the concentration of calcium is 0.1~1.0 g / L, the concentration of magnesium is 0.1~1.0 g / L, and the concentration of manganese is 0.1~1.0 g / L.

3. The method for high-efficiency precipitation of beryllium in a beryllium-lithium-containing brine according to claim 2, characterized in that: The beryllium-lithium smelting brine originates from high-salt waste liquid or slurry filtrate generated during the mining, beryllium ore, or fluorite ore beneficiation process.

4. The method for high-efficiency precipitation of beryllium in a beryllium-lithium-containing brine according to claim 1, characterized in that: The temperature of the beryllium-lithium smelting brine was adjusted to 30℃~40℃.

5. The method for high-efficiency removal of beryllium from beryllium-containing lithium smelting brine according to claim 1, characterized in that: The shearing rate is 200~400 r / min.

6. The method for efficient beryllium precipitation from lithium beryllium smelting brine according to claim 1, characterized in that: The hydroxyl ligand modifier is an alkali metal hydroxide solution; The concentration of the alkali metal hydroxide solution is 1~5 mol / L.

7. The method for high-efficiency removal of beryllium from beryllium-containing lithium smelting brine according to claim 1 or 6, characterized in that: The amount of the hydroxyl ligand modifier added is 1.0~2.5% of the volume of the beryllium lithium smelting brine, and the addition rate is controlled to be completed within 30~120 minutes.

8. The method for high-efficiency precipitation of beryllium in a beryllium-lithium-containing brine according to claim 7, characterized in that: The amount of the hydroxyl ligand modifier added is 1.5 to 2.0% of the volume of the beryllium lithium smelting brine.

9. The method for high-efficiency precipitation of beryllium in a beryllium-lithium-containing brine according to claim 1, characterized in that: The endpoint pH was stabilized in the range of 8.5 to 9.

5.

10. The method for high-efficiency precipitation of beryllium in a beryllium-lithium-containing brine according to claim 1, characterized in that: The ripening reaction takes 30 to 60 minutes.

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