* * * Controlling environmental pollution and recycling used batteries are all six words, which have the function of connecting the preceding with the following. The role of waste battery recycling is to protect the environment.

Recycling used batteries means recycling used batteries. Lead storage battery is the most widely used industrial battery in China, and lead accounts for more than 50% of the total battery cost. Pyrolysis, hydrometallurgy and solid-phase electrolytic reduction technology are mainly used.