The extraction of precious (e.g., diamonds, rubies) and semi-precious stones (e.g., quartz, amethyst) often generates residual rock fragments. These materials can be repurposed into high-quality sand and aggregates using specialized crushing and screening equipment. Below is a breakdown of a tailored production line for stone-derived sand and aggregates.
1. Primary Jaw Crusher
– Model: JC-120
– Feed Size: ≤650mm
– Capacity: 50-200 t/h
– Power: 90 kW
*Function:* Coarse crushing of raw ore to ≤150mm.
2. Secondary Cone Crusher
– Model: CC-200
– Input Size: ≤150mm
– Output: ≤30mm (adjustable)
– Power: 160 kW
*Function:* Medium/fine crushing for uniform particle distribution.
3. Tertiary Impact Crusher (Sand Maker)
– Model: VSI-850
– Feed Size: ≤50mm
– Output: 0-5mm (sand) or 5-10mm (aggregate)
– Power: 250 kW
*Function:* Shaping and sand production with high cubic ratio.
4. Vibrating Screen
– Model: VS-2460
– Layers: 2-3 decks
– Capacity: 100-300 t/h
Raw ore → Jaw crusher (coarse crush) → Cone crusher (secondary crush) → Screening (pre-classification) → VSI crusher (sand shaping) → Final screening → Storage/loading.
Q1: Can this line process hard stones like granite?
*A:* Yes, but wear-resistant liners are recommended for crushers.
Q2: What’s the sand yield rate?
*A:* Typically 40-60%, depending on stone hardness and moisture.
Project: Amethyst Waste Recycling in Brazil (2023)
Solution: Installed JC-120 + CC-200 + VSI-850 to produce
