Foundry Sand Sand Making Machine Equipment

A Foundry Sand Sand Making Machine is specialized equipment designed to process raw materials (like silica sand, quartz, or reclaimed foundry sand) into high-quality, uniformly sized sand grains suitable for foundry casting applications. Here’s a detailed breakdown:

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Key Features of Foundry Sand Making Equipment
1. Crushing & Shaping Mechanism
– Uses impact, compression, or attrition principles (e.g., vertical shaft impactors/VSI, hammer mills) to break down raw materials into desired grain sizes.
– Ensures rounded or sub-angular grain shapes for optimal moldability.

2. Grain Size Control
– Equipped with vibrating screens or air classifiers to segregate sand into specific AFS (American Foundry Society) grades (e.g., AFS 50–100).

3. Dust Removal System
– Integrated bag filters or cyclones to minimize silica dust, ensuring workplace safety and compliance with OSHA/NIOSH standards.

4. High Wear Resistance
– Lined with chromium alloy or ceramic components to withstand abrasion from silica.

5. Automation & Adjustability
– PLC-controlled systems allow precise adjustments to feed rate, rotor speed, and output size.

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Common Types of Foundry Sand Making Machines
1. Vertical Shaft Impact Crusher (VSI)
– Ideal for producing spherical sand grains (mimicking natural sand).
– Low iron contamination, crucial for ferrous/non-ferrous casting.

2. Hammer Crusher
– Cost-effective for coarse crushing but may produce more fines.

3. Roller Crusher
– Gentle crushing for reclaimed sand recycling.

4. Sand Washer & Attrition Scrubber
– Removes clay, coatings, and impurities from used foundry sand.

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Applications
– Producing synthetic molding sand (silica sand, chromite sand, zircon sand).
– Recycling spent foundry sand by removing binders (e.g., bentonite, resin).
– Customizing sand properties for shell molding, green sand casting, or precision casting.

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Top Manufacturers
1. Metso Outotec – Advanced VSI crushers for foundry-grade sand.
2. Sandvik – High-capacity crushing solutions.
3. Luoyang Dahua (China) – Cost-effective vertical shaft impactors.

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