Abstract: A wear lining for a rotary furnace of an incineration installation for, for example, chemical waste, wherein the wear lining comprises tapered bricks (1, 2, 3) which are installed in the furnace in the form of a vaulted lining, the main taper of each brick being matched to the desired vaulted lining shape, and wherein the height (H) of the bricks extends in the thickness direction of the lining. In this lining the bricks are of low porosity and able to withstand high temperatures and chemicals. Furthermore, the bricks have an additional taper which extends at least over part (h) of the height thereof, which additional taper provides, on the inside (9) of the lining, an increase in the gap width (T1) between adjoining bricks which decreases towards the outside of the lining. Preferably, the additional taper is such that, in the cold assembled state, the increase in the gap width (T1) on the inside of the lining is in the range from 1 mm to 2.4 mm. The additional taper extends over 0.1 to 0.