The applications of DY319 and DY272 extractants in lithium battery recycling industry
The development of the lithium battery recycling industry cannot be separated from the support of extraction technology. In the process of lithium battery recycling, the selection of extractants and the design of process steps are crucial for the recycling effect. This article will introduce the applications of DY319 and DY272 in the lithium battery recycling industry, and provide a more comprehensive blend of extractants and process steps.
Firstly, waste batteries require pre-treatment, including the removal of shells and packaging materials. This can be done through mechanical processing or physical methods. Then, it is necessary to filter the pre processed waste battery material to remove solid impurities such as metal residues, plastics, etc.
Next, use an alkaline solution (such as 10% NaOH) for leaching to extract aluminum from waste batteries. At 90 ℃, the leaching rate of aluminum can reach 96%. Then, aluminum can be precipitated out through precipitation or other methods to obtain high-purity aluminum products.
For the remaining leaching solution, sulfuric acid (H2SO4) is usually used for leaching at appropriate temperature, concentration, solid-liquid ratio, and reaction time. Under the process conditions of a temperature of 90 ℃, a concentration of 4 mol/L of H2SO4 solution, a solid-liquid ratio of 1:8, and a reaction time of 100 minutes, the leaching rate of cobalt and lithium can reach 92%. Then, by adding NaHCO3 and Na2CO3 as precipitants, cobalt and lithium were converted into CoCO3 and Li2CO3 precipitates, respectively.
In the process of lithium battery recycling, the selection of extractants is crucial. DY319 is a commonly used extractant that can extract nickel and cobalt ions together, while DY272 can extract cobalt ions, leaving pure nickel ions behind. These two extractants can be selected and combined according to actual needs to achieve the best recovery effect.
During the extraction process, it is necessary to pay attention to factors such as the concentration, temperature, and time of the extractant. For example, when using DY319 for extraction, the concentration should be controlled at around 10%, the temperature should be controlled at around 60 ℃, and the time should be controlled at around 30 minutes. These parameters can be adjusted according to the actual situation to achieve the best extraction effect.
Finally, further treatment was carried out on the obtained CoCO3 and Li2CO3 precipitates. High purity cobalt and lithium products can usually be extracted through process steps such as filtration, washing, and drying. It should be noted that in order to obtain higher purity products, extractants can be used for further purification treatment. For example, DY319 and DY272 can be used for secondary extraction to improve the purity of cobalt and lithium.
In short, the development of the lithium battery recycling industry cannot be separated from the support of extraction technology. By using appropriate extractants and process steps, cobalt and lithium in lithium batteries can be effectively extracted, thereby achieving resource recycling and environmental protection.
Our major products of metal extractants and usage as below:
- P204 (D2EHPA or HDEHP) This is used for first step to remove impurity for laterite nickel ore.
- DY319 high efficiency nickel cobalt co-extraction extractant, can take out nickel and cobalt together from nickel laterite ore or Lithium battery electrolyte. This is second step for laterite nickel ore.
- DZ272 Nickel cobalt separation extractant, it can take cobalt out from nickel cobalt solution, then leave pure nickel. This is third step for laterite nickel ore.
- DY377 efficient nickel and diamond separation extractant.
- DY366 new advanced nickel cobalt extractant.
- DZ988N/DZ973N/DZ902 copper solvent extraction reagent.
- DY301, DY302 for nuclear spent fuel recovery.
- Other extraction reagents for Vanadium extractant, Lithium extractant, Ferro extractant and rare earth extractant.