VSI Sand Making Machine

Introduction

VSI Sand Making Machine (Vertical Shaft Impact Crusher) is a high-performance piece of equipment designed for the production of high-quality manufactured sand and premium-shaped aggregates. It is the ultimate solution for quarries and mining operations looking to meet growing demand for specification sand, particularly as natural sand resources face tightening access and stricter environmental oversight .

Unlike traditional cone crushers, which become uneconomical and produce poor particle shape when set to a tight closed-side setting for sand production, the VSI uses a unique rock-on-rock or rock-on-anvil crushing principle. This efficiently breaks material and shapes it into a consistent, cubical product without the excessive wear associated with other methods . The result is superior particle morphology, consistent gradation, and more predictable downstream performance in concrete and asphalt applications .

Working Principle

The VSI operates by accelerating material and subjecting it to high-velocity impacts, either against other material or against stationary anvils :

• Feed Entry: Material falls vertically from the machine's upper part into a high-speed rotating impeller .
• Acceleration & Discharge: Under centrifugal force, the material is accelerated to speeds of up to 60-75 m/s and thrown from the impeller runners .
• Impact & Crushing: The high-velocity material impacts and crushes against material falling around the impeller (rock-on-rock) or against anvils mounted in the crushing chamber (rock-on-anvil), depending on the configuration .
• Multiple Crushing Cycles: The material forms eddy currents within the chamber, colliding and rubbing against itself multiple times, which further shapes the aggregate .
• Discharge: The final, shaped product exits from the lower part of the machine .

Applications

VSI sand making machines are versatile and used across multiple industries where high-quality aggregate is required :

• Construction & Infrastructure-Production of manufactured sand, premium cubical aggregates for high-grade concrete, asphalt, and road base .
• Mining-Crushing and shaping ores, mineral beneficiation, and preparing fine materials for further processing .
• Aggregates & Quarrying-Tertiary and quaternary crushing stage for shaping aggregates and eliminating soft stone .
• Recycling-Processing materials like concrete, glass, and slag .
• Industrial Minerals-Crushing abrasive materials like carborundum, emery, and bauxite for specific industrial applications .
• Cement-Production of consistent fine material for stable kiln and mill performance .

Key Features & Advantages

• Excellent Particle Shape & Gradation Consistency
• Produces outstanding cubical aggregate, which is critical for concrete workability and asphalt compaction .
• Delivers constant product grading, ensuring consistent quality. Unlike cone crushers, the VSI's output is less affected by wear patterns, making it ideal for quality-controlled projects .
• Optimized Crushing & Energy Efficiency
• The autogenous (rock-on-rock) crushing principle minimizes wear costs compared to metal-on-rock crushing .
• Designed with a low energy and wearing parts cost per ton of product .
• Innovative designs, such as Sandvik's Bi-Flow system, enable up to a 50% lower cost per ton when retrofitting older models .
• High Capacity & Long Service Life
• Optimized rotor designs increase material throughput and service life by 30% and 40% respectively, compared to conventional designs .
• Robust, fully welded construction with heavy-duty bearings and modular oil systems ensures reliability and longevity .
• Enhanced Safety & Maintainability
• Hydraulic lid lifter mechanisms allow for quick and easy access to the rotor for maintenance, saving time and labor .
• Fail-safe dual oil pump lubrication systems and over-vibration detection sensors help prevent faults and protect the equipment .
• Environmental Responsibility
• Features such as deep cavity turbine designs, efficient dust removal systems, and a self-circulating air system significantly reduce dust and noise pollution .

General Specifications :

Model Series:Standard models
Max. Feed Size:30 – 60 mm (depending on model) .
Capacity:20 – 600+ m³/h or t/h .
Power:55 kW to 2x315 kW .
Rotor Speed:850 – 2,700 rpm .
Rotor Diameter:600 mm to 1,168 mm .
Weight:6.5 to 25.6+ tons .
Configuration Options:Open/closed rotors, rock shelf, anvil rings, 3-port/5-port rotors .

Why Choose Our VSI Sand Making Machines?

Our VSI sand making machines combine advanced engineering, proven technology, and rigorous quality control to deliver superior performance and reliability for your specific application.

Key differentiators:

• Premium Quality Construction: Fully welded heavy-duty frames, drop-in style bearing assemblies, and modular oil systems built for high-capacity, continuous operation .
• Customizable Configuration: Choose from various rotor types, crushing chamber configurations (ROR, ROS, SOS), and automation levels to match your precise material and production needs .
• Market-Leading Support: Backed by a global network of experts for process sizing, installation guidance, and a comprehensive aftermarket parts supply to minimize downtime .
• Commitment to Innovation: Our designs focus on reducing wear-part costs, lowering energy consumption, and delivering consistent product grading for a superior return on investment .

Contact our process engineering team today to find the right VSI Sand Making Machine for your application.