A calcium carbonate slurry grinding machine is specialized equipment used to finely grind calcium carbonate (CaCO₃) particles suspended in water (slurry form) to achieve ultra-fine or nano-sized particles. This process is crucial in industries like paper, paint, plastics, and coatings, where particle size and uniformity significantly impact product performance.
Types of Calcium Carbonate Slurry Grinding Machines
1. Wet Ball Mill
– Uses steel balls as grinding media.
– Suitable for coarse to medium grinding.
– Energy-intensive but effective for large-scale production.
2. Vertical Bead Mill (Sand Mill)
– Uses small beads (zirconia, glass, or ceramic) for ultra-fine grinding.
– High efficiency with adjustable fineness (D50 < 2 µm).
– Common in paint, ink, and coating industries.
3. Stirred Media Mill (Attrition Mill)
– Agitator-driven grinding with fine beads.
– Produces submicron/nano-sized particles (<1 µm).
– Low contamination risk due to ceramic/plastic materials.
4. Horizontal Bead Mill
– Continuous wet grinding with high shear forces.
– Ideal for high-viscosity slurries and large volumes.
5. High-Pressure Homogenizer
– Uses hydraulic pressure to break down particles.
– Suitable for nano-CaCO₃ production (<100 nm).
Key Features to Consider
– Particle Size Range: Adjustable from microns to nanometers.
– Material of Construction: Stainless steel, ceramic, or polyurethane for corrosion resistance.
– Cooling System: Prevents overheating of the slurry.
– Energy Efficiency: Lower power consumption per ton of output.
– Contamination Control: Minimized metal wear from grinding media.
Leading Manufacturers
– NETZSCH (Germany) – Advanced bead mills for nano-grinding.
– Bühler Group (Switzerland) – High-efficiency media mills.
– Draiswerke (Germany) – Stirred ball mills for fine slurries.
– Union Process (USA) – Attritor mills fo
et grinding.
– Shanghai SBM (China) – Cost-effective vertical mills.
Applications
– Paper Industry: Filler and coating pigment.
– Paints & Coatings: Improves opacity and