What Types of Rocks Can Be Used to Produce Manufactured Sand?
Manufactured sand is widely used due to its stable quality, good grain shape, and easy production. Different rocks have different properties, so the type of raw material affects the quality and use of the sand. Here are the main sources.
1. Common Rock Materials
Granite
Hard and rich in quartz. Produces high-quality sand with good shape. Ideal for concrete in high-rise buildings.
Basalt
High strength and wear resistance. Suitable for high-grade concrete and hydropower projects.
Limestone
Easy to get and crush. Can be used for both sand and gravel. Stone powder is reusable.
Sandstone
Good strength and shape. Has soundproof and moisture-proof features. Used in decoration.
Quartzite
Very hard. Sand quality is close to natural river sand. Used in high-grade concrete and decorative materials.
River Pebbles
Smooth and uniform. Produce round sand. A good alternative to natural sand.
Dolerite and Diorite
Moderate strength. Used in road base and general concrete.
2. Recycled Materials
Slag and Tailings
Processed waste materials. Help reduce pollution and reuse resources.
Construction Waste
Broken concrete, bricks, etc. Crushed into sand and gravel. Low cost and eco-friendly.
Coal Gangue and Marble Waste
Softer materials. Can be used for low-grade concrete after crushing.
There are over 200 materials that can be used to produce manufactured sand. The choice depends on hardness, cost, and usage needs.
3. Production Process
The typical equipment includes feeder, jaw crusher, cone or impact crusher, sand making machine, vibrating screen, washer, and conveyor.
Steps: Raw material is first crushed, then screened. Suitable sizes go to the sand maker for shaping. Oversized pieces are re-crushed. Finally, the sand is washed and dried for storage.
Manufactured sand offers a reliable, sustainable solution for modern construction needs.
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