China Bentonite Suppliers - Factory Direct Drilling Mud Solutions for Oil, Gas, and Civil Engineering Projects
| Chemical Component | Typical Content | Description |
|---|---|---|
| SiO2 | 55% - 70% | Main silicate component |
| Al2O3 | 12% - 20% | Main alumina component |
| Fe2O3 | 2% - 6% | Varies by ore source |
| MgO | 1% - 5% | Typical clay mineral component |
| CaO | 0.5% - 4% | Varies by bentonite type |
| Na2O | 1% - 4% | Important for sodium bentonite performance |
| K2O | 0.5% - 2.5% | Minor alkali component |
| Loss on Ignition | 6% - 12% | Depends on moisture and clay structure |
Q: What is the primary chemical compound in bentonite?
Silicon Dioxide (SiO2) is the primary component, typically ranging from 55% to 70%, followed by Aluminum Oxide (Al2O3) at 12% to 20%, which together form its layered aluminosilicate clay structure.
Q: Why is Na2O content important for bentonite performance?
Sodium Oxide (Na2O) content directly impacts the swelling capacity, rheology, and thermal stability, making it essential for high-performance sodium bentonite used in drilling muds and sealing.
Q: Why do Fe2O3 and CaO levels vary in chemical reports?
Fe2O3 and CaO concentrations vary based on the geological deposit, ore mining source, and whether the mineral is naturally calcium-dominant or sodium-dominant bentonite.
Q: What does Loss on Ignition (LOI) represent in bentonite analysis?
Loss on Ignition measures the percentage of volatile elements, structurally bound hydroxyl (OH) water, and organic matter lost when the mineral sample is heated to high temperatures.
Q: How do minor components like MgO and K2O affect the clay?
Magnesium Oxide (MgO) and Potassium Oxide (K2O) serve as secondary structural and alkali cations within the smectite interlayer, influencing ion exchange capacity and overall chemical reactivity.
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