TYIC can adopt appropriate process according to the specific requirements of clients to achieve the complete separation and recovery of nickel, cobalt, manganese and lithium, produce battery-grade nickel, cobalt, manganese and lithium products, and ensure that the recovery rates of various metals reach the leading level in the industry.
The main process recovery route for retired ternary batteries: disassembly and crushing – roasting – leaching – extraction – evaporation and crystallization (electrowinning) – precipitation, etc.
Our company can adopt appropriate process flows according to the specific requirements of customers to achieve the complete separation and recovery of nickel, cobalt, manganese and lithium, produce battery-grade nickel, cobalt, manganese and lithium products, and ensure that the recovery rates of various metals reach the leading level in the industry.
Using extraction agents such as P204, P507, and C272, the separation of nickel, cobalt, manganese, and lithium is achieved, resulting in the production of battery-grade nickel, cobalt, and manganese products, with the loss of lithium being minimized.
Sulfuric acid leaching and dissolution
Removal of copper by thiosulfate
Regulate PH to Remove Iron & Aluminum
Pre-Extraction
P204 extractant has the ability to selectively extract some metal ions under a specific pH environment. The purpose of separating and removing impure metal ions can be achieved by controlling the pH environment of the extraction reaction.
The P507 extractant has a selective extraction ability for cobalt under a specific pH environment. By controlling the pH environment of the extraction reaction, the extraction ability of the P507 extractant for other metal ions can be inhibited, thereby achieving the purpose of extracting, separating and purifying cobalt.
The nickel ions in the solution were extracted using P507 extractant, and the extraction of sodium ions and the like was suppressed by optimizing the pH value environment of the extraction reaction, thereby enriching the nickel ions in the solution.
As an efficient extractant for separating nickel from other impurity metal ions, C272 can adjust the pH environment of the extraction reaction to remove impurity metal ions while retaining nickel ions, thus achieving the purpose of purifying nickel solutions.
The leaching section adopts both medium leaching and acid leaching processes. Under the condition of obtaining qualified leaching solution and residue, it also takes into account the cost control. The purification is carried out in sections, which enables the effective separation of carbon black residue, copper residue and iron-aluminum residue. Copper is recovered in the form of cuprous sulfide, which is more economically valuable and easier to filter compared with copper sulfide residue.
By means of continuous medium leaching and acid leaching, the control of intermediate processes has been reduced, and the product quality has become more stable.
By adopting reasonable process design, selecting appropriate number of stages for each section, and designing the reflux section of the extraction box for reverse washing, high-quality battery-grade nickel sulfate and cobalt sulfate solutions can be obtained.
The recovery rate of nickel and cobalt is ≥ 99%.
All reaction vessels are equipped with exhaust ducts, and the stirring is water-sealed. The feeding system is conveyed through pipelines, etc. The operating environment of the workshop is good. The stirring system of the extraction and mixing tank adopts the form of water-sealing or mechanical sealing. The clarification tank is welded and sealed. The manhole cover plate adopts static water sealing, and the observation hole cover plate is water-sealed. The gas leakage is minimized as much as possible. Each set of extraction tank is also provided with an exhaust port, and each storage tank is also provided with an exhaust port. All exhaust ports are connected by air ducts.
The extraction constant-temperature system adopts the method of static mixer + plate heat exchanger, which not only meets the requirements of cooling or heating but also takes into account the convenience of operation. The clarification tank adopts multiple ring-shaped grids instead of the traditional flat plate grids, resulting in better clarification effect and greatly enhanced structural strength. Structures such as T-shaped threaded regulators and the combined structure of the cross-shaped feed inlet have been adopted. On the basis of facilitating the operation of employees, the phenomenon of air blockage has been improved. The product liquid of nickel sulfate, cobalt sulfate and manganese sulfate adopts the oil removal method of air flotation + resin, which can stably treat the oil to within 1 ppm and does not generate a large amount of activated carbon solid waste. The service life and comprehensive cost are lower.
The company headquarters has a powerful design team and a complete processing center. They can refine materials, design plates with fixed dimensions, and uniformly process and shape small plates in advance, thus shortening the time for on-site fabrication and installation.
The company has been promoting the successful experience of electrical automation in the nickel-cobalt industry’s leaching and extraction for many years. When production encounters faults or abnormalities, it will automatically trigger interlocks or issue alarms, thereby reducing quality abnormalities and leakage, and ultimately achieving the goal of reducing the number of operators and lowering labor intensity.
TYIC se centra en el mercado mundial. Contamos con las siguientes ventajas:
De acuerdo con los requisitos del cliente y las características del producto, completar la planificación y el diseño de todo el conjunto de la línea de producción de lixiviación y extracción.
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