How to Achieve 200 Mesh Quartz Powder

200 mesh quartz powder corresponds to a particle size of about 74 μm, widely applied in glass raw materials, refractory materials, plastic & rubber fillers and ordinary ceramics. A stable dry closed-circuit grinding process with matched JACAN milling equipment can steadily produce qualified 200 mesh finished products. Below is the complete operational procedure.

1. Raw Material Preprocessing

1. Material sorting: Remove stone, mud and foreign impurities from raw quartz sand or quartz rock.
2. Washing cleaning: Rinse surface clay and soluble contaminants to reduce grinding impurity.
3. Drying treatment: Dry raw material until moisture content ≤ 1%, avoid powder agglomeration during grinding.
4. Control feed size: Crush raw material into uniform particles of 5–20 mm for stable feeding.

2. Recommended Grinding Mill

Two most suitable JACAN mill models for 200 mesh quartz powder:

• Vertical Roller Mill: First choice for large output, high efficiency and stable particle size
• Raymond Mill: Cost-effective option for medium and small production volume

Both mills come with built-in air classification system, perfectly covering 80–325 mesh fineness range.

3. Standard Closed-Circuit Grinding Steps

1. Uniformly feed qualified quartz particles into the grinding chamber.
2. Material is crushed and ground between grinding roller and grinding ring under centrifugal extrusion force.
3. Fine powder is blown upward by circulating airflow into the classifier.
4. Qualified 200 mesh powder passes through classification wheel and enters collection system.
5. Oversized coarse particles fall back to grinding area for regrinding automatically.

4. Key Adjustable Parameters for 200 Mesh Target

Tune these core parameters to lock stable 200 mesh fineness:

1. Classifier rotation speed: Set medium speed, reduce speed slightly if powder is too fine; raise speed if particles are coarse.
2. Fan air volume: Keep moderate airflow to carry qualified powder out smoothly.
3. Grinding pressure: Maintain proper roller pressure to avoid incomplete grinding or excessive fine powder.
4. Feeding speed: Slow and even feeding ensures consistent grinding quality.

5. Powder Collection & Purification

1. Qualified 200 mesh quartz powder is first collected by cyclone separator.
2. Tiny floating fine dust is captured by pulse bag filter to improve yield rate.
3. Optional magnetic separation to remove iron impurities and enhance powder purity.

6. Finished Inspection & Packaging

1. Random screen inspection to confirm product stays within 200 mesh standard range.
2. Check moisture content and impurity index.
3. Seal and pack qualified powder with moisture-proof bags or bulk containers.

Simple Production Line Flow

Raw Quartz → Washing & Drying → Crushing → Vertical Roller Mill / Raymond Mill → Air Classification → Dust Collection → 200 Mesh Quartz Powder

Common Troubleshooting

• Powder too coarse: Increase classifier speed or reduce feeding quantity
• Excess fine powder mixed: Lower grinding pressure or enlarge air volume
• Low production efficiency: Check wear parts and keep uniform feeding