two-shaft shredder

• Recycle used home appliances by aclshredder

  Jan 10, 2025

  With policies encouraging trading in old household appliances and promoting green consumption, improvements to the recycling system foster a more sustainable environment, inspiring confidence in the value of recycling used appliances.   The shredding system is a key link in the home electrical appliances recycling process, comprising multiple efficient processing stages. From raw material feeding to the final sorting, every process plays a significant role. Firstly, used home appliances are sent into the crushing system through chain plates or belt conveyors. Here, the two-shaft shredder thoroughly disassembles household appliances, reducing them to smaller fragments. In the shredded materials, metallic substances such as iron, copper, and aluminum, as well as non-metallic substances like plastic, are separated, facilitating subsequent reuse.   Next, the shredded, initially decomposed waste materials enter the sorting system. The metal components are separated by magnetic separation. Then, advanced sorting technologies, such as eddy current, vibrating screens, and air separation, are used to refine the recycling of different materials further. Ultimately, all recyclable resources, plastics, and metals like steel, copper, aluminum, etc., will be efficiently separated and re-enter the production cycle, giving new life to used household appliances.   The entire system includes dust-removal devices and environmental protections, reassuring staff and stakeholders that safety and environmental responsibility are prioritized during processing.  

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• How to recycle lithium batteries by shredding

  Oct 10, 2024

  First, the feeding system transports the batteries to the anaerobic shredding system. This system, equipped with a two-shaft shredder and a dedicated shredder for charged batteries, ensures the safety of the entire process. The batteries are shredded into smaller pieces using anaerobic shredding, while the nitrogen atmosphere effectively prevents combustion or explosion. Also, the fire protection system, under real-time monitoring, further enhances the safety of the entire processing. Then, the shredded batteries enter the low-temperature drying system, which operates in a nitrogen atmosphere to control the oxygen content, preventing the electrolyte inside the battery from burning. The drying process volatilizes the electrolyte, which is then treated in the tail-gas treatment system in case of any pollution caused.  Next, the dried materials will be generally separated into heavy or light materials after the first time shredding. The heavy materials mainly consist of the battery casing and tabs, while the light materials include electrode materials and black powder. The light materials then enter the high-temperature pyrolysis system, where the PVDF coating on the positive electrode is removed by pyrolysis, and the fine-grained separator and the pyrolysis-derived plastic are carbonized. This step not only enhances the purity of the recycled materials but also effectively reduces the impurity content in the black powder. After multiple sorting systems by shredding, crushing, and screening, the pyrolysis materials are further refined. Black powder, aluminum, and copper particles are effectively separated and collected, then go to the following processing systems.  The entire recycling process is conducted under a nitrogen atmosphere and in an oxygen-poor environment, effectively reducing the risk of fire and enhancing safety. Meanwhile, the multi-stage black powder collection method yields lower impurity levels and a higher recycling value for the resulting black powder. In addition, the system is also equipped with an exhaust gas treatment system and a fire protection system to handle the exhaust gas generated throughout the sorting and recycling process, ensuring environmental protection. The fire protection system monitors each system in real time to ensure the safety of the entire recycling process.  

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