Flint Clay

Description:
Flint Clay is a highly indurated (hardened), fine-grained variety of kaolinitic clay known for its excellent refractoriness, high alumina content, and low impurities. Naturally occurring as hard, dense, cherty nodules or compact masses, it must be crushed and ground for industrial use. Flint Clay is valued for its low plasticity, high thermal stability, and purity, making it ideal for high-temperature ceramic and refractory applications.
Sourced from premium clay deposits, our Flint Clay is processed and classified to meet the strict demands of the refractory, ceramics, and foundry industries.
Applications:
Flint Clay is primarily used in industries that demand heat resistance, structural integrity, and chemical inertness, including:
- Refractory Industry:
Firebricks, insulating bricks, castables, and monolithics
Kiln furniture and high-alumina mortars - Ceramics Industry:
Porcelain, sanitaryware, and electrical insulators
Catalyst carriers and kiln shelves - Foundry:
Molding sand additives for improved strength and heat resistance - Construction Materials:
As a pozzolanic or filler component in high-performance cements - Glass and Cement Kilns:
Lining materials due to thermal stability
Key Features & Benefits:
a) High refractoriness for demanding thermal applications
b) Low impurity content ensures consistent performance
c) Chemically inert under most conditions
d) Excellent volume stability at high temperatures
e) Low plasticity—ideal as a grog or aggregate in ceramic formulations
f) Dense and hard structure minimizes shrinkage and warping during firing
Physical Properties:

Chemical Composition (Typical, % by weight):
