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Batch Mixers

Batch Mixers

A Silverson high shear batch mixer doesn't simply mix; it emulsifies, homogenizes, solubilizes, 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 1 to 8000 gallons
  • 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 center 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 minimizes aeration caused by the disturbance of the liquid’s surface.

Stage 1 Stage 2 Stage 3 Stage 4

Videos

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

Workheads

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, homogenizing, disintegrating, dissolving, dispersing, blending, particle size reduction and de-agglomerating. Changing from one head or screen to another is quick and simple.

General Purpose Disintegrating Head

This is the most versatile of all the heads, giving an exceptionally vigorous mixing action. Ideal for general mixing applications, its uses also include the disintegration of solids and the preparation of gels and thickeners, suspensions, solutions and slurries.

Slotted Disintegrating Head

For the disintegration of fibrous materials such as animal and vegetable tissue, as well as the disintegration and solubilization of “elastic” materials such as rubbers and polymers.

Square Hole High Shear ScreenTM

Provides exceptionally high shear rates ideal for the rapid size reduction of soluble and insoluble granular solids. It is also suitable for the preparation of emulsions and fine colloidal suspensions.

Standard Emulsor Head and Emulsor Screen

These screens are suitable for liquid/liquid preparations and are especially useful for all emulsions. Emulsor screens are available in fine or medium perforations.

Technical Information

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Capacity
1-8000 gallons.
Workheads
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 Specification
1-200 hp, TEFC, washdown duty, explosion proof, ATEX approved and stainless steel motors available as standard.
Mounting
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.
Sealing
Where sealing is required, lip seals and single or double mechanical shaft seals can be supplied.
Cleaning
Simple, easy-to-clean construction.
HP R.P.M A B TEFC B EXPF C D E F G H I J K
BX/60 1.5 3600 4 5⁄8 24 11 12 ½ 9 9 7 8 4x3⁄8 10 8 6x3⁄8
DX/60 3 3600 6 ¼ 27 13 14 10 10 8 9 4x3⁄8 10 8 6x3⁄8
EX/60 5.0 3600 6 ½ 31 13 ½ 15 12 12 10 ½ 10 ½ 4x7⁄16 13 ¼ 11 ½ 6x7⁄16
FX/60 7.5 3600 6 ½ 41 15 ¾ 17 ½ 12 16 10 14 ½ 4x7⁄16 16 14 6x7⁄16
GX15 15 3600 11 ¼ 48 21 22 ½ 15 19 12 17 4x9⁄16 16 14 6x9⁄16
GX15 15 1800 11 ¼ 48 21 22 ½ 15 19 12 17 4x9⁄16 16 14 6x9⁄16
GX25 25 3600 11 ¼ 48 22 ¼ 25 ½ 15 19 12 17 4x9⁄16 16 14 6x9⁄16
700X 20 3600 14 ½ 60 22 ¼ 25 ½ 19 15 17 12 4x9⁄16 19 16 6x9⁄16
HX15 15 1200 16 ½ + 22 ¼ 25 ½ 20 ½ 17 18 ¾ 15 4x11⁄16 23 20 ½ 6x13⁄16
HX40 40 1800 16 ½ + 28 ½ 30 20 ½ 17 18 ¾ 15 4x11⁄16 23 20 ½ 6x13⁄16
JX 25 1200 16 ½ + 28 ½ 29 ¾ 20 ½ 17 18 ¾ 15 4x11⁄16 23 20 ½ 6x13⁄16
KX from 50 1200 24 + 35 39 34 28 31 24 4x11⁄16 34 31 ¼ 8x11⁄16

+ 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 specialized design and manufacture of large scale rotor/stator mixers with a capacity of up to 8,000 gallons. 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 solubilization 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
Multipurpose Batch Mixer Large Scale Batch Mixers Duplex Disintegrator Dissolver Abramix RBX
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