Calcium carbonate is the most widely used non-metallic mineral filler in modern industry, divided into ground calcium carbonate (GCC) and precipitated calcium carbonate (PCC). With main component CaCO₃ ≥98%, it features high whiteness, stable chemical performance, low oil absorption, good dispersion and excellent weather resistance. Non-toxic, odorless and environmentally friendly, it complies with REACH, RoHS and national industrial standards, serving as the core base filler for coatings, plastics, rubber, papermaking, building materials and adhesives.
Ground calcium carbonate is processed from high-purity limestone through crushing, grinding, classifying and iron removal, with controllable particle size and stable batch difference. Precipitated calcium carbonate is chemically synthesized with finer particle size, higher activity and better whitening performance. After surface modification with stearic acid or silane coupling agent, modified calcium carbonate shows excellent compatibility with organic systems, effectively improving product density, surface smoothness and mechanical strength.
Calcium carbonate acts as extender pigment and rheological regulator. It improves coating hiding power, scrub resistance and weatherability, reduces formula cost, and effectively prevents pigment settling and sagging, widely used in interior and exterior latex paint, industrial anti-corrosion paint, putty and architectural coatings.
It serves as high-performance reinforcing and filling material. It enhances the rigidity, hardness, dimensional stability and heat resistance of plastic products, improves tensile and wear resistance of rubber products, and replaces expensive fillers to realize cost reduction and efficiency improvement.
It increases paper opacity, smoothness and ink absorption, improves paper texture and printing effect. It is also widely used in cement mortar, waterproof materials and artificial stone to enhance compactness and compressive strength.
High-quality calcium carbonate features high whiteness, low impurity, uniform particle size, low moisture and good dispersion. Key inspection indicators include whiteness, fineness, pH value, oil absorption, moisture content and heavy metal content.
Our company supplies conventional and modified calcium carbonate in full mesh specifications, supporting customized particle size and surface treatment. With stable quality and sufficient inventory, we provide free sample testing and technical formula guidance for global customers.
Post time: Jun-17-2026