Industrial Dispersers

An industrial disperser is a high-speed rotor–stator device that pulls a liquid batch through a saw-tooth impeller at tip speeds of 20–30 m/s to break pigment and filler agglomerates and wet them into the vehicle. It is the workhorse premix stage in paint, ink, coatings and adhesive production, producing a uniform, deagglomerated batch before finer grinding. See our guide to pigment dispersion fundamentals for the underlying process science. POLYC MACHINE builds dispersers as fixed-tank and hydraulic-lift configurations for batch sizes from pilot scale to 10,000 L production tanks.

• Single-shaft high-speed disperser — one high-speed rotor for straightforward low-to-medium viscosity batches.
• Dual-shaft (double-shaft) disperser — adds a low-speed sweep agitator for higher viscosities, better heat removal and faster homogenisation. Our single vs dual-shaft comparison walks through the trade-offs.
• Hydraulic-lift disperser — raises and lowers the head between multiple tanks to disperse several batches with one drive.
• Explosion-proof disperser — certified motors and solvent-safe design for hazardous-area, solvent-based processes. Read our explosion-proof equipment guide for the design requirements.
• Basket mill — an enclosed dispersing basket that combines dispersing and fine milling in one vessel. Compare it with a bead mill in our basket mill vs bead mill guide.

A disperser and a bead mill solve different parts of the same process. The disperser wets and deagglomerates at high tip speed but stops at a coarse premix; the bead mill uses grinding media to reach fine and sub-micron particle sizes for gloss and transparency. In practice most lines use both — disperse first, then mill. Our bead mill selection guide covers when a mill is the right next step.

Selection depends on viscosity throughout the batch, batch size, target fineness, tank geometry and any hazardous-area requirements. Start with our high-speed disperser selection guide, then review the key specifications and impeller options. For high-viscosity pastes, see our complete guide to dispersers for high-viscosity materials and the high-viscosity mixer guide.

Industrial dispersers are specified for a wide range of wet-process lines. Explore our application guidance for coatings, printing inks, battery electrode slurries, adhesives and sealants, agrochemical suspensions and construction materials. For continuous lines, our inline disperser guide explains high-shear inline dispersion.

POLYC MACHINE has manufactured dispersing, milling and mixing equipment since 2006, with machines running in production at coating, ink and chemical manufacturers across 80+ countries. All equipment is built under an ISO 9001 quality management system, CE-marked where applicable, and backed by a 3-year warranty with free replacement parts, installation guidance and operator training. Learn more about our manufacturing and quality system.