Study the bulk density, open porosity and coefficient of thermal conductivity of refractory mortar contains kaolin-metakolin-fire brick powder-SIC

Abstract EN

This study includes the use of economic raw material available in Iraq, whichis available in the Western Desert of Iraq, where the knowledge of the effectof some additives on the properties of the Iraqi kaolin allows for use in thefuture industrial applications for the country.

The samples were prepared from(90% , 70% Kaolin+30% meta kaolin) with two types of additives, the first typeis the powder of silicon carbide(SiC) and the second type of additives is the firebrick powder(FBP) which was prepared from the wastes of the furnace linings.

The samples were fired at the temperature of (1100), (1200), (1300), (1400) and(1500) Co and several properties were studied such as bulk density, open porosityand coefficient of thermal conductivity.

The addition of (10% ) silicon increases thethermal conductivity and open porosity coefficient and reduces the bulk density, while the addition of (5% SiC + 5% FBP) have an intermediate property between(10% ) Silicon powder and (10% ) FBP.

While samples contain (10% ) FBP havelower open porosity and coefficient of thermal conductivity with larger bulkdensity.