Standard procedure for disposing of used batteries

With the rapid increase in battery consumption, the number of used batteries is also showing a rapid upward trend. The secondary utilization and treatment of expense batteries is gradually standardized. The disposal of waste batteries needs to meet safety and environmental protection standards. According to the classification process, the centralized treatment of hazardous substances will be possible. Recycling materials are gradually extracted; standard process for disposing of waste batteries 1. Classification. Smash the recycled and sold used battery batteries, peel off the zinc shell and the bottom iron of the battery, take out the copper cap and graphite rod, and the remaining black material is a mixture of manganese dioxide and ammonium chloride as the battery core. Collect the above materials separately After processing, some useful substances can be obtained. The graphite rod is washed with water, dried and then used as an electrode. 2. Making zinc granules. Wash the stripped zinc shell and place it in a cast iron pot, heat it to melt and keep it warm for 2 hours, remove the upper layer of scum, pour it out and cool it, drop it on an iron plate, recycle and sell waste batteries to obtain zinc particles after solidification. 3. Recycle copper sheets. After flattening the copper cap, wash it with hot water, add a certain amount of 10% sulfuric acid and boil for 30 minutes to remove the surface oxide layer, remove it, wash it, and dry it to get the copper sheet. 4. Recover ammonium chloride. Put the black substance in the jar, add 60oC warm water and stir for 1 hour to dissolve all the ammonium chloride in the water, stand still, filter, and wash the filter residue twice, collect the mother liquor; vacuum distill the mother liquor until a white crystal film appears on the surface , Cooling and filtering to obtain ammonium chloride crystals, and the mother liquor is recycled. 5. Recover manganese dioxide. Wash the filtered filter residue 3 times with water, filter, put the filter cake into a pot and evaporate to remove a little carbon and other organic matter, then put it in water and stir it for 30 minutes, filter, and dry the filter cake at 100-110oC to get Black manganese dioxide. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: How to distinguish true and reliable lithium-ion battery technology