According to research by the Battery Council International, lead-acid battery is the largest and the most widely used battery products, about 82% of global consumption of lead. More than 97% of all spent lead-acid batteries are recycled. When using more lead beteries, we have more lead-contained waste. Using lead-acid battery does not pollute the environment; however, lead-contained dust is the main pollution comes from lead-acid batteries in the smelting recycling process. There is no lead mineral in Taiwan, so it is crucial to recycle, even from the lead-contained dust. When using lead-acid batteries are brought to recycling, they are treated under strict environmental procedures by a combination of leaching and roasting processes, in order to reuse valuable materials into car industry (ex, lead oxide powder(PbO), lead sulfate powder(PbSO4)). Preliminary evaluation of lead-acid batteries recycling industry in Taiwan, the total lead-contained dust quantity is about 150 tons per month and it can create about more than NTD$ 5 million profit per year. The project makes lead-contained dust form spent lead-acid batteries recycling extremely successful respectively from both environment and cost. Applications of this project is not only for recycling lead-contained dust, it can also expand to other relative waste lead slag, waste lead paste, and mixed solid wastes.

lead-acid battery、lead-contained ash、leaching and roasting、heavy metal