Ground Calcium Carbonate (GCC)

Ground Calcium Carbonate (GCC), known as Ground Calcium Carbonate (CaCO3) , is widely used as an industrial mineral. The majority of the filler market is taken by GCC and also few industrial minerals can match GCC for its combination of properties and cost.

Principal applications for GCC are listed in the table below:

 

SIMONO GCC

Main roles

Descriptions

Adhesives and sealants

  • Fillers
  • Viscosity control

GCC is often used as a main ingredient of sealants, fillers and ceramic tile adhesives (CTA's)

Animal and pet feeds

  • Calcium source
  • Digestion aid

GCC is incorporated into animal feedstuffs as a dietary supplement and antacid

Construction

  • Filler for concrete, grout & asphalt
  • Fillers in roofing materials

GCC has long been used as a filler in materials like asphalt, roofing felt and plasters. Increasingly other applications are emerging in the new areas of specialist concretes & grouts. Consistent particle size and handling characteristics are very important

Environment

  • Natural alkali source
  • Fire suppressant

GCC is a wholly naturally occurring source of alkalinity used for flue gas desulphurization in power stations, de-acidification of forests and rivers, and drinking water treatment. It can also be used as passive fire protection in hazardous environments, for example coal mines.

Fertilizers

  • Calcium source
  • Fillers

Calcium Carbonate has long been recognized as a useful addition to soil for agriculture, stabilizing the acidity of soil and providing essential calcium for support of crops

Food and household

  • Calcium source
  •  Mild abrasive

GCC is used as an inexpensive dietary calcium supplement and antacid, or as a chemical binder. It can be used in less obvious ways, for example in polishing and cleaning rice, or a cleaning component in shoe polish.

Glass and ceramics

  • Calcium source (glass)
  • Kiln control (ceramics)

GCC is an essential calcium component in the manufacture of container and flat glass. High purity, consistent color and low levels of impurities are essential. It is a common ingredient in pottery glazes

Paints & surface-coatings

  • Pigments
  • Extenders
  • Finish aids

GCC is used to bulk out or extend the resins & polymers in paints. Color is obviously important and GCC is used as an aid to pigmentation, and also to help control the finish (matt or gloss)

Papers

  • Fillers
  • Coating pigments
  • Acidity control
  • Brightness

Fine grades of GCC are used extensively in paper manufacturing. Consistent particle sizing and color are essential. As an alkali material it reduces acidity of paper, improving the durability of printed material

Plastics and composites

  • Fillers
  • Improved rheology
  • Mechanical properties
  • Finish

GCC is widely used as a filler in plastic products, comprising up to 25% of the volume, adding density, improving rheology and reducing cost. GCC is often blended or "coated" with additives such as stearates to aid bonding within the plastic

Rubber and elastomers

  • Fillers
  • Extenders

GCC is useful as an extender and in controlling the flow properties of products which are to be molded or extruded. A widespread application is in latex carpet backing materials

 

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