Recycle lead containing ash from pyrometallurgy of lead-acid battery

Kuan Yu Shih, Wei-sheng Chen, Kai Lun Chiu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

There are about 70 thousand tons spent lead-acid batteries annually in Taiwan and plants treat around 50 thousand tons spent lead-acid batteries annually during past 3 years. Estimated that about 2-2.5 percent of the feed would become lead-containing ash. Therefore, there are around 1000-1250 tons to be dealt with. Landfill are the most common used process now. Therefore, By conducting this recycling method, it is both commercial and environmental-friendly. The analysis of the sample shows that lead contains in the ash is around 51%, and thus, it is valuable to recover. The purpose of this recycling process is to build an optimal hydrometallurgy process to recycle lead-containing ash and makes it into lead oxide in order to reuse back to lead-acid battery industry. The process includes oxidizing roasting, leaching (hydrochloric acid), purification (citric acid) and calcination. The final product is lead oxide (PbO) with bright yellow color, purity is over 99%, and recovery rate is over 98%.

Original languageEnglish
Title of host publicationEARTH 2015 - Proceedings of the 13th International Symposium on East Asian Resources Recycling Technology
PublisherInternational Symposium on East Asian Resources Recycling Technology
Pages665-672
Number of pages8
Publication statusPublished - 2015
Event13th International Symposium on East Asian Resources Recycling Technology, EARTH 2015 - Pattaya, Thailand
Duration: 2015 Nov 12015 Nov 4

Other

Other13th International Symposium on East Asian Resources Recycling Technology, EARTH 2015
CountryThailand
CityPattaya
Period15-11-0115-11-04

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)

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