Bentonite Keramont CA
Bentonite Keramont CA is a calcium bentonite. The "CA" in the name stands for Calcium, indicating its primary mineral composition and the resulting property of high adsorption, meaning it binds to other substances rather than swelling significantly like sodium bentonite.
bentonite significantly increases plasticity in clay bodies. It functions as a powerful plasticizer, enhancing the clay's workability and flexibility by increasing its surface area and water retention. Adding bentonite to a less plastic clay, like porcelain, makes it more forgiving to shape without cracking and improves its dry strength, or "green strength".
Keramont Bentonite can be used to:
- Improve plasticity in clay bodies, making the clay easier to work with during forming processes like throwing and hand-building.
- Act as a suspension agent in glazes, helping to keep glaze components evenly distributed during application.
- Increase the strength of unfired clay bodies (greenware), reducing the likelihood of cracking or warping during drying and firing.
- Increase the strength and durability of unfired glazed making glazed pieces less susceptible to damage.
When added in small percentages (usually 2-5%) to ceramic bodies, bentonite can help improve the mechanical properties without affecting the final texture or appearance of the fired product. However, it should be used carefully, as too much bentonite can cause excessive shrinkage during drying and firing, leading to defects.
Safety Considerations: Like many fine particulate materials, bentonite can pose health risks if inhaled in dry, powdered form. Proper ventilation, dust masks, and other protective measures are recommended when handling it in dry conditions.
This material, known for its versatility, plays a crucial role in producing high-quality ceramics across various applications.
| Bentonite Keramont | |
| Oxide | Analysis |
| CaO | 1.4 |
| MgO | 2 |
| K2O | 1.1 |
| Na2O | 1.3 |
| TiO2 | 0.2 |
| Al2O3 | 23.63 |
| SiO2 | 57.26 |
| Fe2O3 | 2.1 |
| LOI | 11 |
