For the selection of quartz sand making machine, it is necessary to comprehensively consider factors such as the high hardness of quartz (Mohs 7), equipment wear resistance, finished product grain shape and processing efficiency. The following are the recommendations:
Quartz sand making machine equipment recommendation:
1. Impact sand making machine (VSI sand making machine):
• Efficient crushing: Adopting the principle of "stone hitting stone" or "stone hitting iron", it has high crushing efficiency and is suitable for high-hardness quartz.
• Excellent finished product grain shape: The output sand grains are round and meet the standards for building sand (such as GB/T 14684).
• Adjustable particle size: Control the finished sand grading by adjusting parameters such as speed and feed amount.
Precautions:
• Choose wear-resistant parts (such as throwing heads and guard plates) made of high chromium alloy or ceramic materials to extend service life.
• Regular maintenance and monitoring of wear of wearing parts.
2. Cone crusher (with sand making)
· Applicable scenarios: If multi-stage crushing is required, cone crusher can be used for medium and fine crushing first, and then connected to sand making machine.
Advantages of cone crusher:
· Strong wear resistance, stable processing of high-hardness quartz stone.
· Low failure rate, suitable for large-scale continuous production.
· Limitation: The finished product has sharp grain shape, and it needs to be matched with shaping equipment to optimize the sand grains.
3. Vertical shaft impact sand making machine (upgraded version VSI)
· Deep cavity rotor design improves crushing efficiency.
· Equipped with hydraulic cover opening device, which is convenient for maintenance of wear-resistant parts.
· Some models support "semi-dry process" to reduce dust pollution.
Supporting equipment recommendations
· Coarse crushing stage: jaw crusher (processing large pieces of quartz raw materials).
· Screening stage: vibrating screener (separating qualified sand grains, and returning oversized materials for re-crushing).
Auxiliary equipment:
· Dust removal system: pulse bag dust collector to meet environmental protection requirements.
· Feeder: uniform feeding to avoid equipment overload.
Key considerations
· Wear resistance: equipment equipped with imported bearings and high chromium alloy materials is preferred.
· Energy consumption and production capacity: impact sand making machine has low unit energy consumption (about 0.5-1.2 kWh/t), suitable for medium and high production lines.
· Finished product quality: ensure that the fineness modulus (2.6-3.0) and powder content (can be equipped with a powder selector) of the sand meet the standards.
· Maintenance cost: The replacement cycle of the impact sand making machine wearing parts is about 100-200 hours (depending on the SiO₂ content of the quartz stone).
Typical configuration scheme
Small and medium-sized production lines (50-100 tons per hour):
• Jaw crusher + impact sand making machine + vibrating screen + dust removal system
Large production line (more than 200 tons per hour):
• Jaw crusher + cone crusher + impact sand making machine + multi-stage screening + automatic control system
VSI is the first choice, with high wear-resistant configuration, suitable for efficient quartz stone sand making. If the budget is limited or the processing volume is small, the roller sand making machine can be considered, but it needs to accept a higher maintenance frequency. It is recommended to visit the equipment manufacturer on site and conduct material test to ensure compatibility.
