Brief
introduction 
Adopting 98% and above of calcium
carbonate ore, our disintagrated chalk can be used
in plastic rubber, plastic, coating amd papermaking
. They have been well-received by our customers.
Type
common disintagrated chalk , refined
disintagrated chalk , reactive disintagrated chalk
Specification:
From 200 mesh to 10,000 mesh, most
of them are super fine disintagrated chalk:
Item \ Standard |
Standard value |
Inspection value |
CaCO3% |
98 |
98.1 |
PH |
9-11 |
9.8 |
Insoluble matter in HCl |
≤0.5 |
0.2 |
Whiteness |
93 |
94 |
Moisture |
≤0.1 |
0.06 |
Oil
adsorption |
20-40 |
23 |
Volatile matter on 105 |
≤0.5 |
0.2 |
Fe
, % |
≤0.025 |
0.011 |
Residue
on screen |
125 |
≤0.005 |
0.001 |
45 |
≤0.5 |
0.08 |
Loss
on ignition , % |
43.0-44.5 |
43.2 |
Our superfine disintagrated chalk can improve the
whiteness and smoothness of paper, and it can lower
production coast, especially for coating industry.
It has got great praise from our customers.
Reactive calcium :
Item |
Standard |
Inspection Standard |
CaCO3% |
98 |
98 |
PH |
8-11 |
9.4 |
Residue
on screen |
125 |
≤0.005 |
0.001 |
45 |
≤0.5 |
0.08 |
Whiteness |
93 |
94 |
Activation
grade |
95 |
96 |
Fe% |
0.025 |
0.0011 |
Oil
adsorption |
20-40 |
22 |
Grainsize(μm) |
1.2 |
1.1 |
Our reactive disintagrated chalk can improve the mechanics
indexes of plastic rubber greatly, such as press strength,
tensile strength, hardness, tearing strength, impact
strength and abrasivity.
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