Calcium lignosulfonate can be evaluated as an organic binder for selected ceramic powders, granules and green bodies. This page focuses on binding and pre-firing strength; for slurry dispersion and the complete process, see our ceramic processing guide.
Binding Functions
- Support particle cohesion during pressing, extrusion or granulation
- Increase handling strength of compatible green bodies
- Reduce chipping or loose fines where demonstrated by trials
- Provide water-soluble binder addition through solution or controlled dry blending
Binder Trial Program
| Stage | Recommended checks |
|---|---|
| Mixing | Distribution, solution quality, moisture and granule uniformity |
| Forming | Compaction, release, lamination and green density |
| Green body | Strength, edge damage, abrasion and handling |
| Drying | Shrinkage, cracking, deformation and residual moisture |
| Firing | Burnout, gas release, color, pinholes and final properties |
Important Limitations
The product’s natural color and organic content may be unsuitable for some whiteware or tightly controlled firing systems. Excess binder or an unsuitable firing profile can contribute to defects. Determine dosage experimentally using the actual ceramic body and firing cycle.
Request a Binder Trial Sample
Review solubility, moisture, reducing sugar, ash, pH and batch consistency. Email info@greenagrochem.com with the ceramic body, forming process, current binder, target green strength and firing temperature to request TDS, SDS, COA or a sample.
Overview of all ceramic uses: calcium lignosulfonate for ceramics. Grades and documents: calcium lignosulfonate product page.
Frequently Asked Questions
What is a calcium lignosulfonate ceramic binder?
It is a water-soluble lignosulfonate added to ceramic powders, granules or bodies to give green strength before firing. It burns out in the kiln.
How is the binder addition determined?
By trials on the actual body: measure green and dry strength, drying behaviour and fired quality at several additions. There is no universal rate.
