Waste lithium battery crushing system and technology

Used batteries are batteries that have been used and discarded. The composition of lithium-ion battery is mainly positive electrode material, negative electrode material, diaphragm, binder, conductive agent, etc., among which, the positive electrode material is mainly lithium cobalt acid, lithium manganese acid, lithium nickel acid, lithium iron phosphate and ternary materials.

Recycling and resource utilization refers to a recycling process in which after a product is scrapped, this product is decomposed and reorganized reasonably to make valuable products with the same or similar performance as the product. The recycling and resource utilization of battery cathode materials means that after the battery is scrapped, the battery cathode materials are decomposed by elements and prepared into new battery materials according to a certain formula.

Waste battery crushing treatment device technology, waste lithium battery crushing system and its process include the following steps:

1, feeding: the use of conveying mechanism to transport the waste lithium battery to the battery crusher;

2, rough breaking: the use of battery crusher to scrap lithium batteries for rough crushing; In the process of rough breaking, the inert gas can inhibit the fire.

3, electrolyte recovery: battery crusher will be broken materials after the inclusion of electrolyte into the condensation recovery system for condensation recovery;

4, low temperature baking: the material after rough breaking, fully closed transport to the low temperature baking oven, dry evaporation electrolyte, dried materials for the next level of fully closed transport;

5, ultra-low temperature condensation: the coarse breaking and low temperature baking process generated by the electrolyte vapor first through the micro negative pressure collection into the ultra-low temperature condensation system, after the collection of condensed electrolyte, exhaust gas discharged into the exhaust gas treatment system, after cooling, washing, UV photodecomposition, activated carbon treatment, discharge standards into the atmosphere;

6, first-level hammer grinding: the dried material, through the fully sealed transport into the hammer mill for first-level grinding;

7, magnetic shell sorting: after the first level of grinding materials, synchronous magnetic sorting in the process of conveying the next section, separate the steel shell;

8, secondary grinding: remove the magnetic shell after the material, through the fully sealed transport, into the second hammer mill for secondary grinding, complete the positive and negative powder and copper aluminum foil separation, and the copper aluminum foil knead into ball particles;

9. Air selection: After the material seal in Step 8 is sent to the cyclone dust collector, the granular copper aluminum foil, diaphragm paper, and positive and negative powder are preliminarily sorted;

10, positive and negative powder recovery: the material after wind separation into the roller screen sorting, output positive and negative mixed powder, powder collected by ton bag;

11, diaphragm paper recycling: the separator paper selected in step 10 is recycled;

12. Copper aluminum foil recycling: the material after removing the diaphragm paper is sent to the gravity sorting system, and the copper foil and aluminum foil are coarse separated and recycled respectively;

13. Dust collection treatment: the dust-containing gas in the whole process is absorbed by the negative pressure fan into the dust collection treatment system for powder recovery and treatment, and discharged according to the standard.