Understanding the difference between roasted clay and raw bentonite. Learn how roasting improves absorption and hardness. By Radhe Enterprises, Gujarat manufacturer.
Roasted Clay vs Raw Bentonite: Understanding the Differences
If you work with bentonite clay, understanding the difference between raw and roasted variants is essential. Here is a detailed comparison.
What Is Raw Bentonite?
Raw bentonite is natural clay mineral as mined from the earth. It undergoes basic processing — drying, crushing, and screening — but is not heat-treated.
Properties:
- Softer granules
- Higher moisture content
- Good swelling and clumping ability
- Lower cost
What Is Roasted Clay?
Roasted clay is bentonite that has undergone high-temperature kiln processing. This dramatically changes its properties.
Properties:
- Much harder granules (crush-resistant)
- Very low moisture (<5%)
- Superior absorption capacity (350%+)
- Higher cost due to energy-intensive process
Key Differences
- Hardness: Roasted clay is significantly harder and more durable
- Absorption: Roasted clay absorbs more (350%+ vs 250% for raw)
- Dust: Roasted clay produces less dust during handling
- Transport: Roasted clay is lighter (less moisture weight)
- Price: Roasted clay costs more due to kiln processing