Special calcium carbonate powder for papermaking

Product description

High-solids heavy calcium carbonate is used in papermaking. Because of the less moisture retained, the water filtration is good, and the paper machine has better running performance. Because of the good grain size composition and morphology of heavy calcium carbonate, it is beneficial to paper. The combination of fibers and the strength of the paper can also improve the whiteness, opacity, gloss, smoothness, water absorption of the paper, reduce the viscosity of the paper coating and increase the strength of the paper.

Specification

Items	Unit	Specification
Specific surface area	㎝²/g	8000
D97	μm	45.0
Average particle size	μm	7.5
Max particle size	μm	48.00
Whiteness	%	94.5
PH value		9±0.5
Oil absorption	c.c/100g	19.5
Residue on 325 mesh	%	0.03
DOP absorption	c.c/100g	-