Foundry Grade Bentonite for green-sand bonding, mould strength and casting consistency.
Bentonite for Foundry Industry
Bentonite Binder for Green-Sand Moulding
Rajeshri Natural Resources supplies Foundry Grade Bentonite for iron, steel and non-ferrous casting applications. Bentonite is added to moulding sand as a mineral binder and contributes to flowability, compactability, green strength and thermal stability. The suitable grade and addition rate depend on sand quality, casting metal, moulding equipment, return-sand conditions and the foundry’s control parameters.
Strong Sand Bonding
Supports the bonding of silica sand particles during green-sand mould preparation.
Mould Compactability
Helps moulding sand compact and retain the required shape during casting.
Thermal Performance
Selected foundry grades support mould stability under metal-pouring temperatures.
Products Used in the Foundry Industry
Industries We Support Within Foundry
- Iron Foundries: Bentonite binder for grey and ductile iron moulding systems.
- Steel Foundries: Selected grades for steel-casting mould preparation.
- Non-Ferrous Foundries: Material for aluminium, copper-alloy and other casting systems.
- Automotive Component Foundries: Bentonite for repetitive moulding-line production.
- Engineering Casting Units: Binder material for pumps, valves and machinery castings.
- Jobbing Foundries: Supply for varied casting sizes and production batches.
Where Our Bentonite Products Are Used
Frequently Asked Questions
What does Bentonite do in foundry sand?
It acts as a binder that helps moulding sand develop strength, compactability and shape retention.
Is Sodium or Calcium Bentonite used in foundries?
Both may be used in specific systems, although Sodium Bentonite is often selected where stronger swelling and bonding are required.
How much Bentonite should be added?
The dosage must be determined through sand-system testing, moisture control and the foundry’s production parameters.
Can one grade be used for every casting metal?
Not necessarily. Grade selection should consider pouring temperature, sand type, moulding process and casting requirements.
Is bulk packaging available?
Yes. Foundry Grade Bentonite can be supplied in standard bags or bulk packaging according to consumption.
