Mixers

Configurations

• Sizes: Lab scale mixers up to large production batch mixers, sized for vessels ranging from small containers to tote and IBC volumes
• Materials of Construction: Stainless steel, carbon steel, and other alloys per specification
• Mount Types: Top entry, tilt mount, and drum or pail mount configurations
• Drive Options: Direct drive and gear drive, low speed and high speed configurations
• Additional Options: Portable and stationary units, full skid systems, jacketed vessels
• Processing Range: Coarse suspension through nanoparticle sizes

Norstone, Inc. represents multiple mixer manufacturers and configures mixing equipment to match tank size, viscosity, and solids loading requirements. Equipment is specified to the application rather than sold as a fixed, off the shelf unit. This approach allows a mixer configuration to be adjusted for batch weight, container type, and process speed rather than requiring the process to be adapted to a single standard unit.

Selecting a Mixer Configuration

Mount type is generally the first decision point in mixer selection. A top entry mixer is suited to large batch tanks where the mixer is fixed in place above the vessel. A tilt mount mixer allows the mixer head to pivot away from the container, which is useful in facilities moving between multiple container sizes on the same production floor. Drum or pail mount mixers are sized for smaller, portable containers and are common in facilities running frequent batch changes or smaller production runs.

Drive type is the second decision point. Low speed drive configurations are generally specified for blending and suspension work where shear must be kept low to avoid degrading the product. Higher speed configurations are specified where faster suspension or a more thorough blend is required, provided the material being processed can tolerate the additional shear. Torque requirements increase with batch viscosity, so higher viscosity pastes generally require a mixer with a higher torque rating at a given speed than a low viscosity suspension would need.

Tank geometry and batch consistency also affect mixer selection. A jacketed vessel may be specified where temperature control is part of the mixing process, and a full skid system may be specified where the mixer is integrated with upstream or downstream processing equipment on the same production line.

Comparing Mixers to Related Equipment

Mixers occupy a distinct position relative to the other equipment categories in the mixing, dispersing, and milling process. Compared to a disperser, which applies high shear through a rotating disc blade to break apart agglomerates and de-lump powders, a mixer generally runs at lower shear and is built to maintain a uniform blend rather than reduce particle size. Compared to a mill, which relies on grinding media within a chamber to reduce particle size, a mixer contains no media and is not intended for particle size reduction at all.

This distinction matters most in multi-stage processing lines, where a batch may move from a disperser or mill into a mixer for final blending, storage, or staging before packaging. Selecting the correct mixer for that final stage depends on matching batch viscosity and volume to the mixer's mount type and drive configuration, rather than assuming the same unit used for dispersing or milling upstream will perform the blending role downstream.

Mixers work alongside Norstone, Inc.'s Dispersers and Tanks in a complete processing line. For grinding media selection following a mixing or suspension step, see Grinding Media.

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