Composition and Physical Properties of Oyster Shell Aggregate

Main Components

High content of calcium carbonate (CaCO₃), typically 80%–95%

Small amounts of organic matter and trace mineral components

Mostly white or off-white in color

Typical Characteristics

High hardness and robust structure: suitable for building material aggregates

Strong adsorption capacity: can be used for filtration and deodorization

Strong corrosion resistance: suitable for water treatment and other environments

Renewable and environmentally friendly material: derived from recycled marine waste resources

Wide particle size range: can be processed into 3mm–50mm or finer powders as needed

Main Application Areas of Oyster Shell Aggregate

Building and Flooring Materials

Can replace natural sand and gravel

Used in permeable bricks, eco-concrete, and decorative aggregates

Enhances the permeability and environmental performance of materials

Agriculture and Animal Husbandry

As a calcium supplement

Controls soil acidity and improves pH value

Used in poultry feed to supplement minerals

Water Treatment Industry

Used as a filter medium (filter media)

Adsorbs impurities, heavy metals, and odor substances in water

Highly stable, suitable for long-term use

Environmental Protection and Resource Recycling Projects

As an environmentally friendly aggregate to replace limestone

Used for ecological coastline restoration

Significant advantages of green building materials

Compatible with screening equipment

✔ Linear Vibrating Screen: Suitable for large-volume material, coarse and fine classification, and uniform aggregate screening.

✔ Rotary Vibrating Screen: Suitable for grading smaller particle sizes or powdery oyster shells.

✔ Circular Tumbler Sieve: Suitable for screening, cleaning, and grading large-particle oyster shells.