Effective Techniques to Control Fluoride Emissions

摘要

Control of fluoride emissions is an important parameter of smelting operations. This paper highlights effective means that have been used to reduce fluoride emission levels at numerous Alcoa locations. Particular attention has been paid to increases in collection efficiency and dry scrubber effectiveness. Focus areas include: fluoride evolution, draft, pot room components to emissions, dry scrubber system control and emissions monitoring systems and techniques.