200-Mesh Blast Furnace Slag Grinding Project: 

The 200-mesh blast furnace slag grinding project is a high-value recycling initiative that transforms industrial waste into premium mineral powder for cement, concrete, and construction applications. To maximize efficiency and profitability, several critical factors must be considered.

1. Grinding Equipment Selection

The choice of grinding mill significantly impacts production cost and product quality. For 200-mesh (74μm) fineness, vertical roller mills (VRM) are the most energy-efficient, offering lower power consumption (18-22 kWh/t) compared to ball mills (30-35 kWh/t). High-performance models like MLK2650 VRM ensure stable output with adjustable particle size distribution.

2. Particle Size & Activity Control

• Target fineness: ≥90% passing 200-mesh

• Specific surface area: 420-450 m²/kg

• Activity index: Must meet S95 grade (≥75% at 7 days, ≥95% at 28 days)

3. Moisture & Dust Management

• Pre-drying requirement: Slag moisture must be <1% before grinding.

• Dust collection: High-efficiency pulse bag filters (emission <20mg/m³) are essential to meet environmental regulations.

4. Economic Viability

• Production cost: $8-12/ton (power + wear parts)

• Market price: $35-50/ton (200-mesh slag powder for concrete)

• ROI: 12-18 months for a 10t/h production line.