Natural molding sand additives for superior quality in precision castings
GEKO
Edition Date :
February 06, 2026
Natural molding sand additives for superior quality in precision castings: GEKO
Unrivaled precision, smooth processability and easy shake-out for iron and steel castings: GEKO is the effective booster for foundry productivity and perfect castings. Our unique eco-friendly technology, GEKO LE, drastically reduce emissions and help foundries comply with highly demanding environmental regulations and standards. This is our two-tiered Bentonite solution to provide a one-of-a-kind efficient molding system.
Product Information
Benefits
Clariant makes an important contribution to a quicker, more environmentally-friendly green sand casting process:
- Shorter mixing time = high throughput
- Low emission technology
- Smooth cast surfaces = high precision
- Faster mold disintegration
- Easy reuse of sand due to low contamination
- Mechanical engineering
- Electrical engineering
- Construction industry
- Rail vehicle construction
- Steel industry
Natural clay mineral-based foundry bentonite GEKO™ foundry bentonite is made out of highest quality bentonite
It allows for highest mold stability during the foundry process, shorter mixing times and quick disintegration at knockout.
It allows for highest mold stability during the foundry process, shorter mixing times and quick disintegration at knockout.
Good fluidity and high elasticity of sand mold
The chemically activated foundry bentonite GEKO™ deposits water molecules between the clay mineral layers, which have been expanded by the activation. It swells rapidly and thus has a good binding capacity to hold the casting mold’s grains of sand.
The chemically activated foundry bentonite GEKO™ deposits water molecules between the clay mineral layers, which have been expanded by the activation. It swells rapidly and thus has a good binding capacity to hold the casting mold’s grains of sand.
