Bentonite clay is used across drilling fluids, foundry work, ceramics and refractories, and construction and waterproofing. Although the material is often discussed as a single product, its performance depends on the grade and the process. The technical data below gives buyers a clearer starting point for comparing the listed “Ind” and “Mix” samples.
Physical properties
The supplier sheet reports the following physical test results:
| Property | Ind | Mix |
|---|---|---|
| Water of plasticity (%) | — | 88.0 |
| Dry MOR (kg/cm²) | 48.5 | 25.0 |
| Shrinkage (%) | 16.60 | 6.5 |
| Loss on ignition (%) | 7.04 | 2.68 |
| Fired MOR (kg/cm²) | 430 | — |
| Water absorption | 1.96 | — |
| L* | 78.92 | 69.68 |
| a* | 0.52 | 0.73 |
| b* | 7.92 | 13.28 |
Reported firing conditions: Temperature 1206 / 1216 °C; cycle 49 minutes.
Chemical analysis
The chemical analysis lists the following composition:
| Parameter | Result (%) |
|---|---|
| SiO₂ (silicon dioxide) | 69.14 |
| Al₂O₃ (aluminium oxide) | 13.41 |
| Feₜ (total iron) | 0.91 |
| CaO (calcium oxide) | 0.97 |
| MgO (magnesium oxide) | 2.13 |
| Na₂O (sodium oxide) | 2.51 |
| K₂O (potassium oxide) | 0.05 |
| LOI (loss on ignition) | 10.42 |
The sheet identifies the material for drilling fluids in the oil and gas industry, foundry industry, ceramics and refractories, and construction and waterproofing. It describes the product as 100% natural minerals, consistent high quality, lab tested and certified, and eco-friendly and safe.
Declaration in the supplied technical sheet: “The above Test Results are as per the supplier’s laboratory test.” Results are supplier-reported; confirm the applicable grade, test method, specification, and suitability for your process before purchase or use.
Contact HA International Chemicals to discuss your bentonite clay requirements and the appropriate specification for your application.
