Mineral sands producer Iluka Resources says it expects about a 10 per cent rise in its average weighted price for zircon in the three months to December 31.

The company said discussions with its customers had progressed to a point where it could flag the expected price rise, which compares to a weighted average price in the three months to September 30 of about $US2200 ($A2216.29) per tonne.

Iluka, in a statement, said the forecast December quarter price rise was in line with its previous comments that quarterly price rises would moderate following the large price increase in the September quarter.

Iluka is due to release a September quarter production report tomorrow.