Natural Dolomite and Treatment Chemicals ![]() |
The natural dolomite is mechanically crushed to manufacture the powder of calcium carbonate. Then, the calcium carbonate is mixed with the appropriate amount of surface coated liquor. After the calcium carbonate is classified by fineness and packaged, it is called activated heavy calcium carbonate or surface treatment heavy calcium carbonate
The heavy calcium carbonate adopts chemically surface treatment to become activated calcium carbonate. The type of calcium carbonate has better properties of dispersion, reinforcement, and insulation than the commonly heavy calcium carbonate. For the industrial products, it has better fluidity and extrudability during the product processing. It gives the finished product better tear resistance and flex break, or makes other kinds of products achieve the expected properties.
Property | CS-2200C | CS-2000C | CS-1800C | CS-1600C | CS-1400C |
---|---|---|---|---|---|
Mean Particle Size (µm) | 1.3 |
1.65 |
2.1 |
2.6 |
3.4 |
Surface Area (cm2/g) | 21500 | 19500 | 17500 | 15600 | 14000 |
Bulk density (g/cm3) | 0.81 |
0.86 |
0.91 |
0.96 |
1.01 |
True specific gravity (g/cm3) | 2.5~2.7 |
2.5~2.7 | 2.5~2.7 | 2.5~2.7 | 2.5~2.7 |
whiteness (%GE) | 95 |
95 |
95 |
95 |
95 |
All passing (µm) | 18 |
20 |
24 |
38 |
48 |
Residue on 325 mesh | 0.001% |
0.01% |
0.01% |
0.1% |
0.5% |
Oil absorption (ml/100g) | 25 |
22 |
17 |
15 |
13 |
Assay of CaCO3 | 97% |
97% |
97% |
97% |
97% |
Surfactant coated agent |
脂肪酸/偶合剂/滑剂/分散剂 | ||||
Maximum Moisture | max. 0.4% |
max. 0.4% |
max. 0.4% |
max. 0.6% |
max. 0.4% |
Insoluble in HCl | max. 2.0% |
max. 2.0% |
max. 2.0% |
max. 2.0% |
max. 2.0% |
SiO2 | max. 1.2% |
max. 1.2% |
max. 1.2% |
max. 1.5% |
max. 1.2% |
MgO | max. 0.8% |
max. 0.8% |
max. 0.8% |
max. 0.6% |
max. 0.8% |
Fe2O3 | max. 0.3% |
max. 0.3% |
max. 0.3% |
max. 0.3% |
max. 0.3% |
Al2O3 | max. 0.3% |
max. 0.3% |
max. 0.3% |
max. 0.6% |
max. 0.3% |
Loss on ignition | 43±2% |
43±2% |
43±2% |
43±2% |
43±2% |
pH value | 8.3±1 |
8.3±1 |
8.3±1 |
8.3±1 |
8.3±1 |
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The appearance of the product is white powder, which is packaged in a three-layered kraft sack per twenty five kilograms or a bag per one thousand kilograms.