Studies on the behaviour of magnesia, spinel and forsterite refractory bricks under simulated service conditions in the middle regions of oil-fired glass furnace regenerators Part 1. Corrosion tests and hot-mechanical behaviour of the test bricks

Abstract

The aim of the studies was to find better corrosion-resistant bricks for highly stressed checkerworks in the condensation zone of glass furnace regenerators. 30 refractory model brick grades of the systems magnesia-forsterite, magnesia-zircon and magnesia-magnesium aluminium spinel with different types of binding and matrix phases, respectively, were exposed to the corrosive attack of sodium sulphate and SO3 in laboratory tests and a checker corrosion test. Strength measurements and thermal shock resistance tests characterise the changes in hot-mechanical behaviour by Infiltration of sodium sulphate melt and attack by SO3.