Analysis of results from a PFC measurement campaign

CIM Bulletin, Vol. 95, No. 1062, 2002

A. Gosselin, P. Desclaux

In 1999, PFC measurements were carried out at Alcan smelters as part of a large measurement campaign led by the Canadian Aluminium Association. Side worked prebake (SWPB) and horizontal stud Söderberg (HSS) plants in Arvida were the selected sites. CF4 and C2F6 emissions were measured continuously in the exhaust duct and at the roof vents for a week. In parallel, voltages from four designated cells were recorded at a high scan rate. Results were analyzed and correlations between voltage, anode effect duration and PFC emissions were tested. Some fundamental anode effect mechanisms were proposed and validated with the observations.
Keywords: Voltage measurement, Gas measurement, Anode effect, PFC emissions