CONVENTIONAL REFRACTORY LINING FOR NON-OXIDISING FURNACE OF THE GALVANIZING LINE - THERMO-MECHANICAL COMPUTER ANALYSIS TO FIND AN ALTERNATIVE FOR CERAMIC FIBRE

摘要

Selection of a suitable lining for a heating furnace is restricted by several parameters like process conditions, health and safety regulations, requested availability, cost, etc.. The non-oxidising furnace (NOF) of a galvanising line, in general, is lined with insulation bricks or with ceramic fibre. Within Corus IJmuiden only bio soluble ceramic fibres are allowed. As bio soluble fibres for temperatures above 1260℃ are not available on the market, the lining of the non-oxidising furnace, until 2006, consisted of insulating bricks. This lining, however, has two main disadvantages; it has a relatively short life and therefore a negative effect on the availability and the lining is under suspicion of contributing from time to time to soiling of the steel strip. A project was set up to find a conventional refractory lining for the non-oxidising furnace of the galvanising line with an increased life time and with nonegative effects on the steel strip.