This book provides a comprehensive description of alkaline
hydrometallurgy of amphoteric metal hazardous wastes. Topics focus on
leaching of zinc and lead hazardous wastes, purification of leach
solution of zinc and lead, electrowinning of zinc and lead from purified
alkaline solutions, chemical reactions taking place in the production
flowsheets, thermodynamic and spent electrolyte regeneration, alkaline
hydrometallurgy of low-grade smithsonite ores, recovery of molybdenum
and tungsten using ion flotation and solvent extraction processes and
their application in chemical synthesis of Nb and Ta inorganic
compounds, and industrial scale production of 1500-2000 t/a zinc powder
using alkaline leaching-electrowinning processes.
Processes described are cost-effective, generate lesser secondary
pollutants, and have been applied widely in China. Readers that will
find the book appealing include solid waste engineers, environmental
managers, technicians, recycling coordinators, government officials,
undergraduates and graduate students, and researchers.