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Foundry bentonite binds sand particles which results in the mold strength. The main advantage of bentonite is an ability to restore its properties after extra moistening. This makes it possible to use the foundry sand after pouring metal and knockout of casting several times. This sodium-based bentonite is capable of swelling approximately 15 times its dry volume. In molding sand, it helps molding maintain its dimensional accuracy and provides a greater dry/hot strength. Packaging : Foundry Bentonite is available in 25 kg sacks and 1 ton jumbo bag.
Key Specifications: HS Code: 2508.10 | Brand: EximNext | Material: Sodium-Montmorillonite Bentonite Clay, Ca-Na Type | Grade/Type: Foundry Grade / Green Sand Molding Bentonite | Purity/Composition: Montmorillonite (Smectite) Content: Min. 85%, SiO2: 55-65%, Al2O3: 15-25%, Na2O + CaO: 2-6% | Swelling Index: Min. 20 mL/g (typically 20-30 mL/g) | Particle Size: Min. 95% passing 75 microns (200 mesh) | Moisture Content: Max. 12% | Standard: AFS (American Foundry Society) or ISO 13503 / GB/T 20911 (Chinese Standard for Foundry Bentonite) | Application: Green sand mold binding for iron, steel, and non-ferrous metal casting; core making; pit molding | Packaging: 25kg bags, 500kg/1000kg big bags, or bulk silo supply | Origin: India, USA, Greece, Turkey (major global producers)
Supply & Ordering: Minimum Order Quantity: 1 Unit
HS Code: 2508.10 — classified under Ores and Minerals.
Ideal for: Importers, wholesalers, distributors, and manufacturers looking for quality ores and minerals products with verified suppliers and competitive pricing on EximNext.
| HS Code | 2508.10 |
| Brand | EximNext |
| Material | Sodium-Montmorillonite Bentonite Clay, Ca-Na Type |
| Grade/Type | Foundry Grade / Green Sand Molding Bentonite |
| Purity/Composition | Montmorillonite (Smectite) Content: Min. 85%, SiO2: 55-65%, Al2O3: 15-25%, Na2O + CaO: 2-6% |
| Swelling Index | Min. 20 mL/g (typically 20-30 mL/g) |
| Particle Size | Min. 95% passing 75 microns (200 mesh) |
| Moisture Content | Max. 12% |
| Standard | AFS (American Foundry Society) or ISO 13503 / GB/T 20911 (Chinese Standard for Foundry Bentonite) |
| Application | Green sand mold binding for iron, steel, and non-ferrous metal casting; core making; pit molding |
| Packaging | 25kg bags, 500kg/1000kg big bags, or bulk silo supply |
| Origin | India, USA, Greece, Turkey (major global producers) |
Foundry bentonite is a sodium-activated calcium montmorillonite clay widely used as a binder in green sand molding for ferrous and non-ferrous metal casting. This high-swelling bentonite delivers excellent dry and hot compression strength, with the critical ability to rehydrate and restore binding properties after multiple uses, reducing material waste in high-volume foundry operations. Supplied as a fine powder with typical mesh passing 95% at 75 microns, it is competitively priced for global trade at $200-350 per metric ton depending on origin and specifications.
| 企业类型 | Supplier |
| 成立年份 | Contact Supplier |
| Employees | Contact Supplier |
| Annual Revenue | Contact Supplier |
| Main Products | View Products Tab |
| Major Markets | Global |
| 响应时间 | <4h |
| 响应率 | Contact Supplier |
Foundry Bentonite is offered by Sphinx Milling Station, a Supplier based in Egypt. This supplier provides wholesale quantities suitable for bulk importers, distributors, and businesses worldwide. Contact the supplier to request pricing, discuss trade terms, and arrange shipping to your destination.
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