Firebrick Clay is a specific kind of clay that is chemically composed of a high percentage of silicon and aluminum oxides, and a low percentage of the oxides of sodium, potassium, and calcium. Unlike the conventional brick-making clay, it is mined at depth, usually found as a seat-earth associated with coal measures. Refractory and plasticity are the two main properties needed in fire clay that makes them suitable for application in various areas like ceramics, especially Firebrick Clay and refractory bricks. The fire attribution is given for its refractory characteristics. There are two types of fire clay: flint clay and plastic fire clay.
A good fire clay should have the following characteristics which are present in our range:
- Resistance to high temperatures
- Fusion point higher than 1,600°C,
- Stability during firing in the kiln
- Good plasticity
Depending upon their capacity to withstand high temperatures before melting, the fireclays are graded into the following:
- Low duty - withstand temperatures between 1515-1615°C (PCE 19 to 28)
- Intermediate duty - 1650°C (PCE 30)
- High duty - 1700°C (PCE 32)
- Super duty - 1775°C (PCE 35)
Our range of fire clays are used in the below mentioned industrial applications:
- Refractory bricks
- Boiler furnaces
- Glass melting furnaces
- Chimney linings
- Pottery kilns-blast furnaces
- Reheating furnaces
- Manufacture of utensils used in the metalworking industries, such as crucibles, saggars, retorts, and glassware
- Used to make complex items of pottery such as pipes and sanitary ware
