Batch Mixers

Batch Mixers

A Silverson high shear batch mixer doesn’t simply mix; it emulsifies, homogenises, solubilises, suspends, disperses and disintegrates solids. Each mixer, with its precision-engineered Silverson rotor/stator workhead, far outperforms conventional mixers, cutting processing times by up to 90%, improving quality, product consistency and process efficiency.

Silverson High Shear Batch Mixers will:

  • Process from 5 to 30,000 litres
  • Eliminate agglomerates and fish eyes
  • Create stable emulsions and suspensions
  • Reduce particle size
  • Rapidly dissolve solids
  • Accelerate reactions

How It Works

The advantages of Silverson’s high shear rotor/stator batch mixer over simple conventional stirrers or agitators stem from the multistage mixing/shearing action as materials are drawn through the specially designed Silverson workhead - the heart of every machine

Stage 1

The high-speed rotation of the rotor blades within the precision-machined mixing workhead exerts a powerful suction, drawing liquid and solid materials upwards from the bottom of the vessel and into the centre of the workhead.

Stage 2

Centrifugal force then drives materials towards the periphery of the workhead where they are subjected to a milling action in the precision-machined clearance between the ends of the rotor blades and the inner wall of the stator.

Stage 3

This is followed by intense hydraulic shear as the materials are forced, at high velocity, out through the perforations in the stator and circulated into the main body of the mix.

Stage 4

The materials expelled from the head are projected radially at high speed towards the sides of the mixing vessel. At the same time, fresh material is continually drawn into the workhead maintaining the mixing cycle. The effect of the horizontal (radial) expulsion and suction into the head is to set up a circulation pattern that minimises aeration caused by the disturbance of the liquid’s surface.


Batch Mixers – In-Tank Mixers
Batch Mixers – How It Works
How to Use a Silverson In-Tank Mixer


A comprehensive range of workheads and screens is available for all Silverson high shear mixers. These easily interchangeable workheads offer great versatility by allowing any machine to be adapted to perform a wide range of mixing operations including emulsifying, homogenising, disintegrating, dissolving, dispersing, blending, particle size reduction and de-agglomerating. Changing from one head or screen to another is quick and simple.

Technical Information

4-30,000 litres.
Interchangeable workheads available for all models.
Materials of Construction
Product contact parts in 316L stainless steel. Non-standard materials such as carbon steel or Hastelloy available on request.
Motor Specifications
​TEFV and ATEX approved Flameproof motors are available as standard. Inverter rated, stainless steel and other motors are available as optional extras.
All mixers can be supplied with either a rectangular or circular flange for mounting on the vessel. Smaller models can be mounted on specially constructed mobile hydraulic floor stands.
Where sealing is required, lip seals and single or double mechanical shaft seals can be supplied.
Simple, easy-to-clean construction.

BX 0.75 3000 118 610 277 312 229 229 178 203 4x10 254 203 6x10
DX 1.5 3000 160 690 303 330 254 254 203 229 4x10 254 203 6x10
EX 3 3000 165 790 334 379 305 305 267 267 4x11 337 292 6x11
FX 4 3000 165 1042 334 379 305 305 267 267 4x11 337 292 6x11
GX10 7.5 3000 286 1220 413 460 305 407 254 369 4x11 407 356 6x11
GX10 7.5 1500 286 1220 413 460 305 407 254 369 4x11 407 356 6x11
GX20 15 3000 286 1220 561 600 381 483 305 432 4x14 407 356 6x14
700X 11 1500 368 1525 561 600 482 381 432 305 4x14 483 406 6x14
HX10 7.5 1000 419 + 565 605 520 432 476 381 4x17.5 584 521 6x20.5
HX30 22 1500 419 + 670 710 520 432 476 381 4x17.5 584 521 6x20.5
JX 15 1000 419 + 670 710 520 432 476 381 4x17.5 584 521 6x20.5
KX from 30 1000 610 + 860 935 864 711 787 610 4x17.5 864 794 8x17.5

+ Length adjusted to suit vessel.
* Capacities available on request.

The dimensions shown are approximate only and certified diagrams should be used for installation purposes. Silverson reserves the right to change dimensions and specifications without notice.

Mixer Options

Multipurpose Batch Mixer

Each machine employs a special interchangeable Silverson rotor/stator mixing head, which allows it to be used on a wide variety of different products.

The option of a mobile hydraulic floor stand greatly increases the flexibility of these mixers, allowing them to be moved from vessel to vessel.

Large Scale Batch Mixers

Silverson is the world leader in the specialised design and manufacture of large scale rotor/stator mixers with a capacity of up to 30,000 litres. All these machines are individually built to order and constructed specifically to suit each customer’s requirements.

Duplex Disintegrator Dissolver

The Duplex was specifically developed for the disintegration and solubilisation of solid rubbers and polymers for the Luboil and adhesive industries, but its success has now seen its introduction into all fields of mixing.

Abramix RBX

The Silverson Abramix range is designed specifically for processing highly abrasive materials. Typical applications include:

  • Catalytic converter slurries
  • Liquid glazes
  • Ceramic slips
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