Gypsum blocks containing gemstones require specialized crushing and sand-making processes to maximize mineral recovery while producing high-quality construction aggregates. This article outlines a tailored production line solution.
1. Primary Jaw Crusher:
– Model: JC-1200
– Feed size: ≤800mm
– Capacity: 200-350t/h
– Gypsum-specific tooth plate design prevents material sticking
2. Secondary Cone Crusher:
– Model: CC-300
– Closed-side setting: 20-50mm (adjustable)
– Hydraulic clearing system for tramp metal protection
3. Tertiary Impact Crusher (for aggregate shaping):
– Rotor diameter: 1200mm
– Max feed size: 50mm
– Cubic-shaped output with <5% flakiness
4. Air Separator System:
– Gemstone recovery efficiency: ≥92%
– Throughput: matches crusher capacity
| Product | Size Range(mm) | Application |
|---|---|---|
| Coarse Aggregate | 5-20 | Concrete mixing |
| Fine Aggregate | 0-5 | Mortar production |
| Gem Concentrate | – | Mineral processing |
Q1: How to prevent gypsum re-cementing during crushing?
A: Maintain crusher temperature below 60°C and use dry processing when possible.
Q2: What’s the typical gem recovery rate?
A: 85-92% for visible gems >2mm, depending on ore grade.
Q3: Can the same line process other soft minerals?
A: Yes, with adjustable crusher settings for materials like limestone or shale.
Arizona Gem-Gypsum Project (
