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Waste battery recycling methods and functions

Batteries are increasingly integrated into people's lives, people's growing demand for battery. In order to reduce pollution and make full use of resources, we will take positive and effective measures on the part of the solid waste centralized recovery, for comprehensive utilization. Waste battery treatment can get zinc, copper, graphite, ammonium chloride, manganese dioxide and other useful substances, and reduce environmental pollution and producing better economic and environmental benefits.
waste battery recycling process has the following steps:
1. Zinc tablets. Stripped of zinc, wash-House, placed in a cast iron pan, heating and melting and heat for 2 hours, remove the top scum, pour cooling, drop in on the iron, zinc after the solidification grain.
2. Classification. Smash will recycle used batteries, and stripped the zinc and iron at the end of the battery, remove the brass cap and graphite rods, rest of black as a core of manganese dioxide and ammonium chloride mixture, these substances separately collected after processing, you can get some useful material. Its graphite rods by washing, drying, and then used as electrodes.
3. Recovery of ammonium chloride. The black substance into the tank, 60oC warm water stir 1 hour, all ammonium chloride dissolved in water, stationary, filtration, water filter 2, collection of mother liquor; liquor until the surface appears a white slab by vacuum distillation, cooling and filtration of ammonium chloride Crystal, liquid recycling.
4. Recovery of manganese dioxide. Filtered residue washed 3 times, filter cake into a pot to boil to remove some carbon and other organic matter and then toss into the water for 30 minutes, filter, filter cake from 100-110oC drying, the black manganese oxide.
5. Recycled copper. Wash the copper caps after flattening in hot water, then add a certain amount of 10% sulphuric acid boiling for 30 minutes to remove the oxide layer on the surface, remove and wash and dry the copper sheet.
spent batteries into the environment, on human teratogenic, carcinogenic, brought a series of changes induced by such hazards. This process is able to achieve substantial economic and environmental benefits. Heavy metals in used batteries and the available resources, so on waste battery recycling is very important.
waste Zn-MN battery negative electrode zinc is an amphoteric metal, perforated reacts easily with water and erosion, resulting in mercury and other heavy metals in the electrolyte flows, polluting the soil and groundwater. After cracking waste battery sorting through reduction roasting, leaching, net, Zn, MN and also electrolytic liquid, 82% of useful components in recycling waste batteries, with total recovery of zinc by 83% and more, total recovery of manganese dioxide is about 82%, mercury-containing wastes can be sent to a special facility.
recycling of lead-acid batteries scrap lead recycling primarily, also includes the utilization of waste acid and plastic shell. Lead and lead dust and handle made of soft lead, or purified recycled, landfilling of lead slag.

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