Sand making machine is a device used to crush large materials into sand particles. It is widely used in medium and fine crushing of various hard and brittle materials such as rocks, abrasives, and refractory materials.

Analysis Of Key Technical Parameters

(1) Core performance indicators

Sand formation rate control:

Change the finished product particle size by adjusting the rotor speed (45-75m/s)

Optimal range: coarse sand (45-55m/s) | fine sand (60-70m/s)

Stone powder content adjustment:

The standard powder selector can control the stone powder content at 8-15% (concrete sand requires <10%)

(2) Wear-resistant system innovation

Composite ceramic rotor:

Service life up to 800 hours (conventional castings only 300 hours)

Cost increased by 35% but the cost of consumables per ton of sand decreased by 40%

Efficiency improvement plan

(1) Existing production line upgrade

Add air screening system

Separate 0.075-0.6mm graded sand and improve the fineness modulus of machine-made sand (ideal range of 2.6-2.9)

Investment return period: 6-8 months

VFD control system transformation

Automatically adjust the spindle speed according to the feed rate, saving 15-20% energy

(2) Intelligent operation and maintenance system

Predictive maintenance module

Bearing status is monitored by vibration, and fault warning is given 3-7 days in advance

Reducing unplanned downtime by more than 60%

Typical application scenarios

Case 1: Granite sand making project

Configuration plan:

  • Feeding: <40mm (pre-treated by cone crusher)
  • Equipment: VSI1145 sand making machine (3×400kW motor)
  • Process: closed-loop circulation (return ratio is controlled at 25%)
  • Output indicators:
  • Finished sand fineness modulus: 2.8
  • Stone powder content: 9.2%
  • Power consumption per ton: 2.4kWh

Case 2: Construction waste recycled sand making

Special design:

  • Increase pre-screening to remove light materials
  • Use “stone-beating iron” mode to enhance crushing force
  • Economic efficiency:
  • The cost of recycled sand is 30-40% lower than that of natural sand
  • Complies with GB/T 14684-2022 Zone 2 Sand Standard

In-depth recommendations

For large sand plants with an annual output of more than 1 million tons, it is recommended to adopt the “double-machine standby” solution, configuring 2 small and medium-sized sand making machines instead of a single large machine, which can still maintain 50% production capacity during maintenance, and significantly improve the overall benefits.