IMPACT OF ALUMINA FINES CONTENT ON POTLINE PERFORMANCEOURO PRETO SMELTER

摘要

The present paper discusses the influence of alumina fines on potperformance and stability of HS S?derberg pots. The environmentaspects are also taken into account; we have also discusseschallenges taken to comply with the local environment agencyrequirements.Alumina particle size is an essential characteristic to be analyzedin the raw material of the primary aluminum production process.The presence of considerable quantity of fine particles – 325#screen undersize – generates a series of problem in potlines suchas anode effect and pot instability. Alumina fines play animportant role in order to achieve process performance,operational results and meet environmental norms.Supported by statistical tools an evaluation is done to betterunderstand the influence of alumina fines in the process.