Calcium Carbonate

Commonly known as limestone, Calcium Carbonate is a natural mineral derived from finely ground calcite. It appears as a clean, white powder with high brightness and high purity, free from heavy metal contamination. It is widely used across various industries, including rubber, plastics, paints, and even in oil and gas drilling operations.

Role in the Rubber Industry

In rubber compounding, Calcium Carbonate acts as a filler, particularly in products that require non-black coloration such as white or light-colored rubber. It disperses well in rubber matrices, increases compound volume, improves processability, and helps reduce raw material costs effectively.

Although it does not directly enhance mechanical properties, using fine particle size Calcium Carbonate can increase hardness and affect compound viscosity.

Advantages:

Increases rubber compound volume
Reduces formulation cost
Good dispersion in rubber
Provides smooth and bright product surface
Safe and non-toxic

Role in Oil and Gas Drilling

In oil and gas exploration, Calcium Carbonate is used as a Lost Circulation Material (LCM) to control pressure and seal fractures in rock formations. Key properties include:

Insoluble in water
Chemically stable
Decomposes at high temperatures (825°C)
Alkalinity adjustment for drilling fluids
Environmentally safe

Physical and Chemical Properties:

White powder with high brightness
Mohs hardness: 3
Odorless, non-flammable, insoluble in water and alcohol
Soluble in dilute acids and reactive with CO₂ gas
High oil absorption capacity
Non-toxic and environmentally friendly

Calcium carbonate 9×1
Calcium carbonate FCC200
UNICARB