Heavy calcium carbonate is a product of simple mechanical processing of
calcite. It is an excellent filler and performance improver. It is widely used
in plastics, rubber, paper, paint, feed, medicine, household chemicals, glass,
ceramics and other fields. The demand for calcium carbonate in developed
countries is very large and there are many varieties. Relatively speaking, China
is still very backward in this respect and has great potential for
development.
The product is an ideal filling material for paper, plastic, paint, paint,
rubber, ceramics, pharmaceutical, glass, ink, petroleum and other industries. 1.
Chemical performance index: CaCO3 content: ≥98.5%; magnesium oxide (MgO)
content: ≥0.5%; iron (Fe) content: ≥0.001%; oil absorption ML/100g: 34-50%; PH
(100/L Suspension): 8.5--9; hydrochloric acid insoluble matter ≤ 0.15%; 2.
Physical property index: whiteness: ≥ 96%; specific gravity: 2.72; specific
surface area (cm2 / g): 12000-18000; burning loss: ≤44.5%.