High-Whiteness Dolomite Grinding – From Raw Rock to Ultra-Fine Powder Specialized ball mill solutions for dolomite processing in glass, ceramics, refractories, and filler industries. Whether you need 200-mesh dolomite powder for container glass or D97=10µm ultra-fine powder for high-end coatings, our closed-circuit dolomite ball mill with air classifier delivers consistent whiteness, narrow particle size distribution, and energy-efficient operation. Available with ceramic lining for iron-free grinding or steel lining for cost-effective high-capacity production — trusted by dolomite processing plants worldwide.
Ceramic-Lined, Iron-Free Grinding: Our dolomite ball mill is available with high-alumina ceramic bricks (92-99% Al₂O₃) and alumina or flint pebble media. Iron pickup is guaranteed <50 ppm, preserving the natural whiteness of dolomite (ISO brightness >92%).
Precision Air Classifier Closed Circuit: Our ball mill system integrates a turbo dynamic air classifier that precisely controls the D97 cut point. Coarse particles are automatically returned to the mill. We guarantee a narrow PSD with 200-mesh passing ≥95% for consistent glass batch quality.
Advanced Wear-Resistant Design: Mill liners are available in high-manganese steel, high-chromium cast iron, or rubber for maximum abrasion resistance. Grinding media are high-chrome cast balls. Liner life is extended by 40-50% compared to standard limestone mills.
Energy-Saving Closed-Circuit System: Our ball mill + air classifier circuit recycles only the oversize fraction, reducing specific energy consumption by 20-25% for D97=15µm dolomite powder compared to open-circuit systems.
Our dolomite ball mill is a horizontal grinding system designed for processing dolomite rock into high-quality powder or slurry. Available in dry or wet configurations, it serves the glass, ceramic, refractory, construction, and chemical industries.
Core Applications & Materials:
· Glass Industry: Dolomite powder (100-200 mesh) as a source of MgO and CaO in container glass, flat glass, and fiberglass. High purity and consistent sizing are critical.
· Ceramics: Dolomite in tile bodies and glazes as a flux, providing CaO and MgO for lower firing temperatures.
· Refractories: Dead-burnt dolomite (doloma) for refractory bricks and monolithic linings in steelmaking.
· Fillers & Pigments: Ultra-fine dolomite powder (5-25µm) for paints, plastics, rubber, and adhesives, as a cost-effective extender with good whiteness.
· Agriculture: Dolomite powder for soil pH correction (aglime) and magnesium supplementation.
· Construction: Dolomite sand and powder in concrete, asphalt, and building materials.
Process Options:
| Feature | Dry Grinding | Wet Grinding |
|---|---|---|
| Typical feed | Pre-crushed dolomite ≤25mm | Pre-crushed dolomite + water |
| Product | Dry powder, 80-1250 mesh | Dolomite slurry (for ceramic or FGD) |
| Classification | Air classifier (turbo or cage) | Hydrocyclone |
| Lining options | Ceramic, Rubber, Steel | Ceramic, Rubber, Polyurethane |
| Key benefit | No subsequent drying | Lower energy for ultra-fine, dust-free |
| Model | Dia.×Length (m) | Motor Power (kW) | Capacity (t/h, 200 mesh) | Capacity (t/h, D97=15µm) | Typical Annual Output (TPY) |
|---|---|---|---|---|---|
| Φ1.8×7m | 1.8×7 | 185 | 3–5 | 1.0–1.5 | 20,000–30,000 |
| Φ2.2×7m | 2.2×7 | 245 | 6–10 | 2.0–3.0 | 40,000–60,000 |
| Φ2.4×8m | 2.4×8 | 315 | 10–16 | 3.0–5.0 | 60,000–100,000 |
| Φ2.4×13m | 2.4×13 | 450 | 16–25 | 5.0–8.0 | 100,000–160,000 |
| Φ3.2×9m | 3.2×9 | 800 | 30–45 | 10–15 | 200,000–300,000 |
Proven Performance: Global Dolomite Ball Mill Installations
Case 1: 60,000 TPY Dolomite Powder Plant for Container Glass, Southeast Asia
· Model: Φ2.4×8m dry closed-circuit ball mill with steel lining
· Material: Dolomite rock, CaMg(CO₃)₂ 95%, Bond Wi 13 kWh/t
· Product: 150-mesh dolomite powder, 200 mesh passing 90%, Fe₂O₃ <0.05%
· Result: Output 12 t/h, specific power 28 kW·h/t. Steel lining kept investment low while meeting the glass plant's iron spec. Commissioned in 9 months.
Case 2: 40,000 TPY Ultra-Fine Dolomite Filler Plant, India
· Model: Φ2.2×7m ceramic-lined ball mill + turbo classifier + HGMS
· Material: High-purity dolomite, CaMg(CO₃)₂ 98%, whiteness 94% ISO
· Product: Paint-grade dolomite powder, D97=12µm, whiteness 96% ISO, Fe₂O₃ 0.02%
· Result: Product replaced imported GCC in water-based paints. Specific power 42 kW·h/t. Ceramic lining and HGMS ensured consistent whiteness and low iron.
Case 3: Dolomite Processing Line Upgrade, Middle East
· Model: Retrofit — replaced old open-circuit mill with Φ1.8×7m closed-circuit system
· Original: 3 t/h at 100 mesh, inconsistent quality, high iron
· New: 5 t/h at 200 mesh 95% passing, with ceramic lining option for glass-grade
· Result: Capacity up 67%, product quality met float glass standard. ROI in 2 years.
Kolev Equipment Technology Co., Ltd. is a large-scale private technology enterprise specializing in the research, development, production, and sales of mining and metal ore processing equipment. With over 20 years of experience in ultra-fine grinding, industrial drying, and crushing sand making industries, we provide intelligent solutions and mature supporting products worldwide.
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