High alumina bricks for steel coking furnace

November 07, 2018

High alumina bricks for steel coking furnace

As a large-scale high-temperature industrial equipment, the steel coking furnaces should bear the melting furnace temperature up to 1000 degrees. Therefore, it is necessary to select the suitable refractory and thermal insulation protective materials. For steel coking furnaces, many manufacturers choose high-aluminum bricks as raw materials for masonry and maintenance. But high alumina bricks include light high alumina bricks and heavy high alumina bricks. Which kind of bricks should be used in steel coking furnace?

In fact, in the case of steel coke ovens and other industrial furnaces, they are mostly combined with two kinds of high alumina bricks. Because of their different characteristics and functions, the use of one type alone does not fully meet the needs of refractory insulation effect by the kiln, so large manufacturers purchase these two materials for construction.

The main characteristic of lightweight high-alumina bricks is thermal insulation, which can be used in the outer layer close to the furnace wall, so as to ensure the efficient use of the heat energy, and without causing deflagration due to high heat conduction. In the furnace, the heavy high alumina bricks are used in the place where the flame contacts. The refractory materials which have been pressed and calcined at a high temperature of 1775℃ has strong heat resistance, high temperature resistance and erosion resistance. It does not deform or fall off under high temperature for a long time.

Lightweight high alumina bricks and heavy high alumina bricks have their own strengths and shortcomings. Both are designed to build for the different positions and functions required for the furnace. So they can extend the service life of equipment and improve the safety production level.