Ground Calcium Carbonate

Ground Calcium Carbonate (GCC) is a naturally occurring mineral that is widely used in various industries. Its chemical composition is primarily calcium carbonate (CaCO3), with trace amounts of impurities. The mineral structure of GCC consists of calcium ions bonded with carbonate ions, forming crystalline structures.

GCC is known for its high purity and brightness, making it suitable for applications where whiteness and brightness are essential, such as in the production of paints, coatings, and paper. It acts as a filler and extender in these industries, improving opacity, coverage, and printability.

The particle size of GCC can vary depending on the specific application requirements. Fine-ground GCC is used in plastics, rubber, and sealants, where it enhances product performance and improves mechanical properties. Coarser grades of GCC are used in construction materials, such as concrete, where it acts as a functional filler and provides strength and durability. GCC is also used in the manufacturing of adhesives, sealants, and caulks, providing viscosity control and improved bonding properties. In the food and pharmaceutical industries, it is used as a calcium supplement, food additive, and as an antacid due to its alkaline nature.

Chemical Composition

The chemical composition of Ground Calcium Carbonate (GCC) is primarily calcium carbonate (CaCO3). It consists of calcium ions (Ca2+) bonded with carbonate ions (CO3^2-). The molecular formula for calcium carbonate is CaCO3. GCC may also contain trace amounts of impurities such as magnesium, iron, and other elements depending on its source and production process. However, the majority of its composition is calcium carbonate.

The chemical structure of GCC is crystalline, with calcium ions surrounded by carbonate ions in a three-dimensional lattice arrangement. This structure gives GCC its characteristic properties, including its high purity, whiteness, and alkalinity. The chemical composition of GCC plays a significant role in its wide range of applications. Its calcium carbonate content contributes to its ability to act as a filler, extender, and pigment in various industries. The purity and consistency of the chemical composition ensure consistent performance and quality in different applications, such as paints, coatings, plastics, rubber, and construction materials.

• CaCO3 90% to 97%
• MgO 1.5% to 2.5%
• Silica 1 % to 3.5%

Variation of the specifications stated due to natural raw materials and environment conditions are possible though they have no influence on the application properties described.