Complaint
Kaolin has a range of applications which are grouped in three main areas: paper, ceramics and refractories.
Demand is most in the manufacture of paper where it performs two separate functions- as a filler to improve printing characteristics and as a coating pigment to enhance the surface properties of the paper such as the brightness, smoothness, gloss and ink receptivity etc.
In the ceramics industry the main function of kaolin is to impart whiteness . Its major uses are in vitreous china sanitaryware, table ware, wall tiles, electrical porcelain…
Kaolin is used in refractories where it is valued for its alumina content.
Performance mineral applications use kaolin as fillers in paint, rubber , plastics and adhesives and sealants and pharmaceuticals.
Other important uses include the manufacture of white cement and glass fibre.
CS-102 Kaolin Specification
| ITEM | CS-102 |
| Brightness(T457) | 93.5%min |
| SiO2 | 52+/-2 |
| Al2O3 | 45+/-2 |
| Particle Size (0-2micron)% | 95 |
| Particle Size (0-10micron)% | 99.5 |
| Refractivity | 1.62 |
| Screen residue (325 mesh %) | 0.005 |
| Oil Absorbency (g/100g) | 60+/-3 |
| PH | 5.5-7.0 |
| Moisture (%) | 0.5max |
| Test Project | Standard index value |
| Whiteness | 92.7% |
| Oil absorption value(g/100g) | 36.4 |
| Moisture | 0.003% |
| Screen tailings 1250um | 0.0018% |
| PH | 6.8 |
| Al2O3 | 45.31% |
| TiO2 | 0.27% |
| Fe2O3 | 0.25 % |
| SiO2 | 48.12% |
| MgO | 0.12% |
| K2O | 0.04% |
| CaO | 0.11% |
| Na2O | 0.04% |
Properties |
|
GE Brihtness | ≥95 |
Particle size(-2μm,%) | 80-84 |
average grain size (μm) | 0.9±0.1 |
Screen residue(325mesh,%) | ≤0.005 |
oil absorption(g/100g) | 60±5 |
moisture(%) | ≤0.5 |
Dispersion(Hegman, μm) | ≤50 |
PH | 6.0-8.0 |
Kaolin for Filler Series Specification
| Kaolin for Filler Series | |||||||
| No. of Product | CS-2 | CS-3A | CS-3 | CS-4B | CS-5 | CS-6 | CS-7 |
| SiO2 % | ≤48 | ≤48 | 48-50 | ≤48 | ≤50 | ≤49 | ≤49 |
| Al2O3 % | ≥37 | ≥36.5 | ≥36 | ≥36.5 | ≥35.0 | ≥35.0 | ≥35.0 |
| Fe2O3 % | ≤0.40 | ≤0.80 | ≤1.00 | ≤1.00 | ≤1.3 | ≤1.30 | ≤1.0 |
| Particles (-2μm)% | ≥80 | ≥55 | ≥42 | ≥55 | ≥60 | ≥40 | ≥50 |
| Screen Residue (325 mesh) % | ≤0.01 | ≤0.02 | ≤0.09 | ≤0.02 | ≤0.02 | ≤0.02 | ≤0.02 |
| Brightness | 85-86 | ≥84.5 | ≥83 | ≥81.0 | 72±2.0 | 84±1.0 | 85±1.0 |
| Moisture % | ≤2.0 | ≤1.5 | ≤2.0 | ≤1.5 | ≤2.0 | ≤2.0 | ≤2.0 |
| LOS % | <15.5 | <12.0 | <13.0 | <12.0 | |||
| PH | 4.0-6.0 | 4.0-6.0 | 5.0-7.0 | 4.0-6.0 | 3.0-5.0 | 3.0-5.0 | 4.0-6.0 |
| Despersion % | <0.02 | <0.06 | <0.06 | <0.05 | |||
| Packing | 25/50 kgs PP Bag/800KG/BAG,1000KG/BAG | ||||||
