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Product Overview
Foundry-grade silica sand is a high-performance raw material widely used in metal casting industries. It serves as the main refractory and shaping material in molding and core-making processes.
Our silica sand is produced from high-quality natural quartz ore, processed through washing, crushing, drying, magnetic separation, and precise screening.
It ensures stable performance in high-temperature metal casting environments, reducing casting defects and improving surface finish quality.
Applications include:
Iron casting
Steel casting
Non-ferrous metal casting
Precision casting components
Automotive & machinery parts
Typical Chemical & Physical Properties
| Item | Specification |
| SiO₂ | >=95%, >=99% |
| Al₂O₃ | <=0.5% |
| Clay Content | <=0.3% |
| Available Grain Sizes | |
Popular size | 40-70mesh |
| 0.1–5 mm, Custom particle size distribution is available according to customer requirements. | |
Key Features & Advantages:
✔ High SiO₂ purity
✔ Stable grain size distribution for consistent molding performance
✔ Low clay and dust content reduces gas defects
✔ Strong chemical stability under high temperature
✔ Suitable for multiple casting systems
Our foundry silica sand is widely used in:
Sand casting (green sand system)
Resin-bonded sand casting
Shell molding process
Sodium silicate sand process
Lost foam casting (EPC process)
Precision casting support materials
Industries served:
Automotive manufacturing
Machinery parts
Pipe fittings & valves
Industrial equipment
Metal fabrication plants
Production Process & Raw Material Control
We ensure stable quality from raw material to finished product:
Selected high-grade quartz ore
Crushing and grinding process
Washing and impurity removal
Magnetic separation for iron reduction
Drying system for moisture control
Precise screening for uniform particle size distribution
Strict process control ensures consistent batch quality.
FAQ
Q1: Can you customize particle size?
Yes, we can produce according to your required mesh size and distribution.
Q2: What is your minimum order quantity?
Generally 25 tons, flexible for trial orders.
Q3: Do you provide samples?
Yes, free samples are available for testing.
Q4: What is your lead time?
Usually 7–15 days, depending on order volume.
Stable raw material supply
Strict production and quality control system
Consistent particle size and chemical stability
Strong customization capability
Packaging & Delivery:
| Packaging | Net Weight |
| Jumbo Bag | 1000-1350kgs |
| Woven Bag | 20-25kgs |
| Bags With Pallets | 1000-1350kgs |
| Custom Packaging | Available |
Get a Quote
Tell us your casting requirements, and our technical team will recommend the most suitable silica sand grade for your application.
Contact us today for technical support and a quotation.
