Core Equipment Of The Building Aggregate Production Line

Application Scenario: Coarse crushing, used for crushing hard stone materials (such as granite and basalt).

Characteristics:

 Simple structure and stable operation, suitable for processing large raw stones (feed particle size up to 1200mm).

 Large crushing ratio (generally 3-6 times), with adjustable finished product particle size (10-350mm).

 Wear-resistant components (jaw plates) are made of high-manganese steel, offering a long service life.

Application Scenario: Medium or fine crushing, especially suitable for fine crushing of high-hardness stone materials.

Characteristics:

 Adopts the principle of laminated crushing, resulting in good finished product shape (high cubic content) and fewer needle-like and flaky particles.

 The hydraulic protection system can automatically remove foreign objects, reducing downtime for maintenance.

 Classified into types such as spring cone crushers, single-cylinder cone crushers, and multi-cylinder cone crushers to adapt to different production capacity requirements.

Application Scenario: Medium or fine crushing, suitable for crushing medium and low hardness stone materials (such as limestone and sandstone).

Characteristics:

 Crushes materials using impact energy, resulting in uniform particle size and low over-crushing rate.

 The discharge particle size (10-80mm) can be controlled by adjusting the gap between the impact plate and the hammer plate.

 The hammer plates and impact plates are made of wear-resistant materials (such as high-chromium cast iron), but they wear out quickly and need to be replaced regularly.

Application Scenario: Sand making and shaping processes, used for producing manufactured sand or improving the shape of aggregates.

Characteristics:

 Adopts the "stone-on-stone" or "stone-on-steel" principle, resulting in round-shaped manufactured sand with reasonable gradation.

 Combines crushing and shaping functions, capable of processing stones below 50mm into 0-5mm manufactured sand.

 Equipped with wear-resistant circular guard plates and impellers, suitable for high-wear working conditions.

Application Scenario: Core screening equipment in aggregate production lines, suitable for materials of various hardness levels.

Characteristics:

 Excited by vibrating motors or eccentric shafts, with high screening efficiency (up to 85%-95%).

 Can be designed with 2-4 layers of screens to achieve multi-size classification (e.g., 5-10mm, 10-20mm, 20-31.5mm, etc.).

 Common types include circular vibrating screens and linear vibrating screens. The former has a circular screening trajectory, while the latter has a linear trajectory, suitable for different material characteristics.

Application Scenario: Used for processing materials with high mud content or strong viscosity, such as weathered sand and shale.
Characteristics:
 Drum-type structure, with screen openings not easily blocked, suitable for screening wet materials or aggregates with high impurities.
 Low rotation speed and low noise, but with screening efficiency lower than vibrating screens, typically used in small and medium-sized production lines.

Combines crushing and sand making functions, serving as the core equipment in manufactured sand production lines, and can produce finished sand with a particle size of 0-5mm.

Characteristics:
 Optimized impeller design improves material throughput and crushing efficiency, resulting in better-shaped finished sand particles.
 Can be equipped with a dust removal device to reduce dust pollution during production, meeting environmental protection requirements.

Function: Uniformly and continuously feeds materials to the crusher to avoid material accumulation or blockage.
Characteristics:
 Can adjust the feeding speed to adapt to different production capacity requirements.
 Often equipped with a pre-screening function to remove soil and fine materials from raw materials, reducing crusher wear.

Function: Connects various equipment to achieve horizontal or inclined transportation of materials.
Characteristics:
 Large conveying capacity and stable operation, which can be designed as straight, curved, or climbing forms according to the production line layout.
 Belt materials include rubber, canvas, etc., and wear-resistant belts should be selected according to material hardness.

Function: Removes impurities such as soil and stone dust from manufactured sand to improve sand cleanliness.

Types:

 Spiral Sand Washer: Offers excellent cleaning performance, suitable for large-scale production, but has a higher fine sand loss rate.

 Wheel Bucket Sand Washer: Features high fine sand recovery rate and low energy consumption, commonly used in environmentally friendly production lines.

 Function: Captures dust generated during crushing and screening processes to reduce environmental pollution.

 Types: Includes bag dust collectors and pulse dust collectors, which can control dust concentration within environmental standards (e.g., ≤20mg/m³).

 Function: centrally controls the start/stop of production line equipment, monitors operating parameters, and provides fault alarms.

 Characteristics: Adopts a PLC automatic control system, enabling remote monitoring and intelligent production management.

 Raw Material Characteristics:For high-hardness stones, prioritize the combination of jaw crusher and cone crusher; for medium-soft stones, jaw crusher + impact crusher can be selected.

 Production Capacity Requirements: Single-machine equipment is suitable for small production lines (＜100t/h); large production lines (＞500t/h) require multi-stage crushing and screening systems.

 Environmental Requirements: Washing sand and dust removal equipment must be equipped to comply with local regulations on dust, noise, and sewage discharge.

 Automation Level: It is recommended to adopt a PLC control system for large production lines to reduce labor costs and improve stability.