White Clay Stones Manufacturer
White clay, primarily Kaolin (China Clay), is vital for manufacturing white ceramics and tiles due to its high purity and low iron content. It contributes brilliance/whiteness and high firing temperature stability. Its other awesome properties include excellent plasticity (when mixed with ball clay), low shrinkage, and fine particle size for a smooth finish.
- High Whiteness and Purity
- High Refractoriness
- Good Green Strength
- Low Shrinkage
Why Choose Expolica’s
White Clay Stones
Our White clay is a naturally occurring, high-purity hydrated aluminum silicate. Its fine texture and lack of iron impurities make it indispensable in industries requiring exceptional whiteness, strength, and thermal resistance.
- Exceptional Purity: White clay is prized for its low content of mineral impurities, specifically iron, which results in a brilliant white color after firing. This property is vital for creating high-end products like porcelain and white-glazed ceramic tiles, ensuring a pristine finish.High-Temperature Stability
- Refractoriness: With a high fusion temperature, this clay can withstand the intense heat of the kiln without melting or deforming. This thermal resistance ensures the final product is durable, dense, and fully vitrified, which is essential for industrial ceramics.
- Excellent Dry Strength: When mixed with water, white clay imparts the body with enough cohesive strength for handling and shaping. This "green strength" minimizes breakage and warping during the crucial raw and drying stages before the item enters the firing kiln.
- Controlled Shrinkage: White clay exhibits predictable and relatively low shrinkage during the firing process. This characteristic is paramount for maintaining precise dimensional accuracy, which is non-negotiable in the production of uniformly sized ceramic floor and wall tiles.
- Delicate Plasticity: While often combined with other clays, white clay contributes a delicate plasticity that is suitable for intricate modeling and thin-walled designs. Its fine particle size allows for a smooth surface texture and clean, sharp detail retention in finished pieces.
- Chemical Inertness : Due to its stable chemical composition, white clay does not react with many substances, making it safe for cosmetic, pharmaceutical, and technical applications. Its adsorbent nature is also excellent for purification processes.
Technical Specifications of Ball Clay
CHEMICAL PROPERTIES
| CHEMICAL ANALYSIS | SUPER WHITE CLAY | WHITE CLAY |
|---|---|---|
| SiO2 (%) | 47.74 | 48.45 |
| AI2O3 | 35.78 | 34.43 |
| Fe2O3 | 0.81 | 0.97 |
| Ti02 | 1.27 | 1.17 |
| CaO | 0.86 | 0.65 |
| MgO | 0.32 | 0.28 |
| K2O | 0.48 | 0.76 |
| Na2O | 0.28 | 0.34 |
| LOI | 13.71 | 12.75 |
PHYSICAL PROPERTIES
| PHYSICAL ANALYSIS | SUPER WHITE CLAY | WHITE CLAY |
|---|---|---|
| TEMPERATURE | 1205/1220 | 1205/1220 |
| CYCLE Min | 60 | 60 |
| Whiteness | 83.05 | 81.42 |
| L* | 91.02 | 88.43 |
| a* | 0.01 | 0.64 |
| b* | 8.65 | 9.15 |
| Shrinkage | 12.62 | 10.40 |
| Dry M.O.R | 28.55 | 24.50 |
| Fired M.O.R | 266.45 | 250.38 |
| Water Absorption | 3.89 | 7.48 |
| Water of Plasticity | 36.85 | 35.91 |
| TDS | 330.00 | 550.00 |
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