Power lithium battery recycling process equipment

Power lithium battery recycling process equipment Lithium battery cathode materials can be divided into lithium iron phosphate batteries, lithium manganate batteries, lithium cobalt oxide batteries, ternary lithium batteries, etc. The positive electrode is mostly lithium alloy metal oxide or lithium metal, while the negative electrode Mostly graphite. Although the three types of batteries have their own applications in the power field, from the perspective of recycling value, the recovery rate of valuable metals in power lithium batteries is relatively high. At present, the recycling process of power lithium battery can be divided into three processes: pretreatment, leaching, and advanced treatment. The physical sorting method is mainly used in the pretreatment stage of lithium batteries, and a series of physical operations such as crushing, screening, and separation of lithium battery shells, electrode active materials, and current collectors are used to initially obtain materials with high valence metal components.

The physical sorting method is mainly used in the pretreatment stage of lithium batteries, and a series of physical operations such as crushing, screening, and separation of lithium battery shells, electrode active materials, and current collectors are used to initially obtain materials with high valence metal components.

Pretreatment is the process of separating the high-value positive electrode active materials recovered from the power lithium battery from other substances by appropriate methods. Generally, the positive electrode sheet must be obtained through the steps of discharging, dismantling and crushing, and the electrode sheet is separated by a certain method. The removal of the binder or current collector is mainly achieved through a series of physical means.

Dismantling and breaking, dismantling is carried out on the basis of discharge treatment, usually by manual dismantling, but in actual production, mechanical breaking is often used. For example, the aluminum alloy and other metals in the shell can be directly The method of dismantling and crushing directly carries out high-purity recycling. However, in the process of dismantling and crushing, harmful substances will be produced, which will cause harm to the environment and workers. Generally, harmless operation is carried out in a centralized manner.

The separation technology mainly includes conventional mechanical separation, chemical solvent dissolution treatment, and heat treatment. The recovery of power lithium batteries will greatly alleviate the shortage of other metal resources such as cobalt and lithium in China in the future, and is also an effective way to protect the ecological environment. Resource recycling is of great significance.