1992 Volume 78 Issue 7 Pages 1053-1060
It has been known empirically that increasing the Al2O3 content in raw material makes the yield, productivity, and sinter quality worse in the sintering process. To solve the Al2O3 problem, a study was made on the nature of sintering by assuming it to be a series of reactions in the sintering bed, such as the formation of stem pores and integration of solid bonds to form a sintercake structure.
It was found that the adverse effects of increased Al2O3 content in raw material for sintering are ascribable to the change in sintercake structure. It is that the bonding of solid particles and the integration of stem pores were cheked. The changes are caused by the deterioration of the fluidity of the melt. When a flux to increase fluidity was added to a high-Al2O3 raw material having low melt fluidity, the yield improved due to improvement of the sintercake structure.
