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Batch High Shear Mixers
How it Works
Benefits of choosing a ROSS Batch High Shear Mixer
What does a ROSS Batch High Shear Mixer do?
The ROSS Batch High Shear Mixer is ideal for reducing the size of agglomerates and droplets in fine dispersions and emulsions to create scalable, highly repeatable products.
How does a ROSS Batch High Shear Mixer work?
The Batch High Shear Mixer design consists of a single stage four-blade rotor that turns at high speed within a stationary stator. As the rotating blades pass each opening in the stator, they mechanically shear particles and droplets, and expel material at high velocity into the surrounding mix, creating intense hydraulic shear. As fast as material is expelled, more is drawn into the bottom of the rotor/stator generator, which promotes continuous flow and fast mixing.
Features at a Glance
Why Choose a ROSS Batch High Shear Mixer?
Design - The batch model is made with high quality type 316 stainless steel wetted parts and can be either fixed mounted to a vessel, or suspended over a vessel on a portable or floor-mounted lift. The mobile configuration offers the flexibility to use a single mixer for multiple vessels in different locations. Large production models (25HP and larger) require a floor-mounted air/oil hydraulic lift. Utilizing a lift allows the operator to vary the position of the stator to process different materials and batch sizes.
Scalability – ROSS High Shear Mixers are available from bench top laboratory models to very large production models capable of dispersing several thousand gallons at a time. Batch models are supplied in many sizes from 3/4 through 100 horsepower.
Flexibility – Designed to accommodate a variety of mix cans and vessels. Interchangeable stators provide unlimited flexibility to adapt to a variety of product formulations.
Sub-surface Powder Induction – Compatible with the ROSS Solids/Liquid Injection Manifold (SLIM) Technology. When the SLIM option is chosen, the mixer is equipped with a special rotor/stator that generates an intense vacuum in the high shear zone and sucks in powders sub-surface. HSM-100LH-2 SLIM video
Specifications
Technical Data
100 Series Batch High Shear Mixer Features:
- 1.5 HP through 200 HP.
- Driven by an explosion proof inverter duty motor.
- Standard single stage rotor/stator supplied with either disintegrating, slotted, square hole, or fine screen stator head.
- Stainless steel type 316 wetted parts.
- Non-stainless steel external parts coated with a two-part acrylic urethane enamel coating.
- TEFLON® rotor shaft bushing.
100 Series High Shear Mixer Specifications
500 Series Batch High Shear Mixer Features:
- 1.5 HP through 200 HP.
- Driven by an explosion proof, inverter duty motor.
- Designed to bolt to a standard ANSI flange.
- Equipped with a single mechanical seal designed for vacuum operation.
- Standard single stage rotor/stator supplied with either disintegrating slotted, square hole, or fine screen stator head.
- Stainless steel type 316 wetted parts.
- Non-stainless steel external parts coated with a two-part acrylic urethane enamel coating.
- TEFLON® rotor shaft bushing.
Photo Gallery
Additional Resources
High-capacity rotor/stator mixers
Inline rotor/stator mixers are ideal for large-volume high shear mixing requirements. Benefits include batch size flexibility, pumping capability and ease of installation.
Conserve raw materials in a scalable R&D mixer.
Scalable mixing equipment allow R&D scientists to conserve expensive ingredients while following a repeatable, consistent agitation method that can be easily replicated in pilot or production scale. This bulletin presents some R&D mixers and their smallest recommended batch volumes.
Mixer options for pureeing and liquefying solids
A variety of mixers are suitable for pureeing requirements - from single-shaft rotor/stator mixers and high speed dispersers to multi-agitator equipment for higher viscosity formulations, and even ultra-high shear mixers which are used to achieve a high level of smoothness and consistency in some products.
Recommended Mixing Equipment for Pigment Dispersions
Pigment dispersions are typically prepared in a two-step process: (1) powder wet-out in a batching tank and (2) one or more passes through a mill to achieve the desired fineness of grind. The costly and time-consuming milling step is often a production bottleneck which in the past has forced manufacturers to add more milling equipment to handle multiple passes or simply keep up with volume demands. Today, companies are looking at better ways to prepare the pre-mix and disperse agglomerates as close as possible to the desired specifications to reduce the number of mill passes, allow the use of smaller grinding media, or even eliminate milling altogether.