Light weight fire clay brick is a kind of high temperature adiabatic refractory material. It is made of refractory clay and is made of clay, which can be used as the binding agent of clay, and the added amount of combustible or foaming agent can be obtained by firing. Light weight fire clay brick is used for the insulation of the heating layer of the gas producer. The temperature in the 1200-1400 ℃. Ingredients are mixed with water made of plastic material or mud, mud with extrusion or pouring shape, 1250-1350 ℃ after dry burning oxidation atmosphere. The volume density of commonly used clay bricks is 0.75-1.2 g/cm3. In reality, more than 1.0, Light weight fire clay brick insulation brick index is the most concise method to judge its performance.

1.Adopt insulation measure for heating equipment, which should not affect the service life of whole refractory lining body.

2.It is reasonable to adopt thermal insulation in large area for high temperature kiln that keep continuous working, which will reduce the heat loss. But for less special position, such as roof of open-hearth furnace, when the thermal insulation result the lining body rising temperature which cause the heat loss more than without the thermal insulation. Then there is no need to adopt the method of thermal insulation. So according to the thermal storage and heat loss to calculate and decide if need to adopt heat insulation measures.

3.As the Lightweight Insulating Fire Brick has higher apparent porosity, when use Lightweight Insulating Fire Brick that cannot bear overload. And also avoid contacting molten metal, molten slag and high temperature furnace lining.

4.Lightweight Insulating Fire Brick has low strength. When laying Lightweight Insulating Fire Brick, need to layout the brickwork joint and expansive joint rightly to avoid breaking the lining body due to expansion. Lightweight Insulating Fire Brick should not suffer the strong mechanical shock, hit and abrasion.

5.Lightweight Insulating Fire Brick has the large reheating linear shrinkage. Its maximum service temperature is lower than 100℃ that should definitely not higher than the allowable tempeature.