The HS code for hand grinding machines used in stone processing typically falls under 8464.90 (for handheld tools) or 6804.23 (for abrasive stone tools). However, industrial-scale crushing and sand-making lines require advanced equipment to produce high-quality aggregates. Below is a breakdown of key machinery and their roles in sand/aggregate production.
1. Primary Jaw Crusher
– Capacity: 50–1,500 t/h
– Feed size: ≤1,200 mm
– Output size: 100–350 mm
2. Secondary Cone Crusher
– Capacity: 60–800 t/h
– Adjustable discharge: 10–50 mm
3. Vertical Shaft Impact Crusher (Sand Maker)
– Capacity: 60–500 t/h
– Output: 0–5 mm (mechanism sand)
4. Vibrating Screen
– Layers: 2–4
– Screening efficiency: ≥90%
| Equipment | Model Example | Power (kW) | Output Size (mm) | Capacity (t/h) |
|——————–|—————|————|——————|—————-|
| Jaw Crusher | PE600×900 | 75 | 65–160 | 50–160 |
| Cone Crusher | HPT300 | 315 | 5–50 | 200–500 |
| VSI Crusher | VSI1140 | 440 | 0–5 | 250–360 |
Q1: What’s the difference between mechanism sand and natural sand?
A: Mechanism sand has angular particles, enhancing concrete strength, while natural sand is rounded.
Q2: How to reduce dust in crushing lines?
A: Use water sprays + dust collectors (e.g., pulse bag filters).
Project: Limestone aggregate plant in Vietnam (2023)
– Output: 500 t/h
– Equipment: Jaw crusher + cone
