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Since 1990 · Ankleshwar, India
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Agitator assembly & impeller design

Agitation engineered for the duty.

Agitator assemblies and impellers are a Steelcon speciality in their own right — designed from the process duty, built in the alloys our reactors are made of, and trial-run on our own benches before they leave Ankleshwar. We supply them with new vessels, as stand-alone assemblies, or as upgrades to equipment already in service.

Discuss your mixing duty What to tell us
150 HP
Largest agitator drive — Toyo Ink India; 75 HP assemblies for Ciba, SRF, Toyo Ink and Solenis
90 kL
Largest agitated equipment — reactor for Styrenix Performance Materials
20 kL
Reactor agitator systems — P.I. Industries (12, 15 and 20 kL), Rallis (10 kL)
60 kL
Agitated storage tank — Apcotex Industries

Figures are references from equipment already supplied, not limits — larger drives, vessels and special configurations are engineered to suit each project.

What we design and build

01

Process-duty sizing

Impeller type, diameter, speed and power selected for the job it has to do — blending, solids suspension, gas dispersion, heat transfer or high-shear dispersion — from your process data, or together with your process licensor.

02

Mechanical design

Shaft, hub and blade design checked for critical speed, deflection and bending; bearing housings, couplings, gearbox and motor matched to the vessel, the seal and the site conditions.

03

Sealing & drive options

Single or double mechanical seals with seal-support systems, stuffing boxes or sealless magnetic-drive couplings; FLP motors and ATEX-compliant agitated reactor assemblies to EN ISO 80079-36/-37.

04

Retrofit & upgrades

New impellers, drives or seals for agitators already in service — reviewed from your drawings and operating data to raise throughput or cut power and batch time, as with the reactor design Piramal Pharma recognized for a 15% shorter batch.

05

Customized solutions

Where a standard pattern will not do: special-purpose and multi-stage impellers, side- and bottom-entry assemblies, cGMP and mirror-polished wetted parts, and alloys to suit the process.

06

Trial-run before dispatch

Every assembly is static and dynamically balanced, air-run and then run with the vessel full of water at working pressure on our vertical trial bench (12 m hook height) — rpm, amps, runout, vibration, noise and bearing / seal temperatures recorded in the dossier.

Impellers for every flow pattern

The impeller families we build most often — each made in the alloy of the vessel and trial-run before dispatch.

Hydrofoil impeller inside a coil-fitted reactor
Axial flow Hydrofoil Low shear, high pumping — blending and solids suspension at low power.
Pitched-blade turbine on a long shaft
Mixed flow Pitched-blade turbine Axial / radial mix for general-purpose reaction duties, 2 to 6 blades.
Gas-dispersion impeller in a hydrogenator
Radial flow Gas-dispersion impeller High gas hold-up for hydrogenators and gas-induction reactors.
Cowl-disc disperser
High shear Cowl-disc disperser Dispersion of pigments, inks, paints and adhesives.
Pipe anchor impeller
Close clearance Pipe anchor Wall sweep for viscous products and better wall heat transfer.
Special-purpose impeller hub and blade
Special duty Special-purpose impeller Designed around the duty when a standard pattern will not do.
Axial flow
  • Hydrofoil — narrow-blade, high-efficiency
  • Pitched-blade turbine — 2 to 6 blades
  • Marine propeller — 3 or 4 blades
  • Viscous-duty hydrofoil — wide blade, variable angle
Radial & high shear
  • Flat-blade turbine
  • Flat-blade disc turbine (Rushton type)
  • Concave-blade disc turbine
  • Curved-blade (backswept) turbine
  • Cowl-disc disperser (dissolver disc)
  • Gas-dispersion & hollow-shaft gas-induction impellers
Multi-stage & combined
  • Counter-flow multi-stage impeller — two stages, opposed blade angles
  • Hydrofoil + turbine combinations on one shaft
  • Foam breakers and surface impellers
  • Coil impellers with in-shaft heating or cooling
Close-clearance & viscous
  • Anchor and pipe anchor
  • Baby anchor / tickler
  • Gate and paddle
  • Helical ribbon — single or double
  • Helical screw
  • Wall scrapers
Special duty
  • Retreat-curve impeller
  • Large-diameter low-speed impeller
  • Side- and bottom-entry mixers
  • Special-purpose impellers designed around the duty

These are generic descriptions of the impeller families we design and build — including the counter-flow multi-stage, viscous-duty hydrofoil, helical-ribbon and curved-blade types often known by their makers' trade names. Tell us the duty and we will propose the design.

Configurations we build

Entry & mounting
Top, side or bottom entry · centre-line or offset · baffled or unbaffled vessels
Flow pattern
Axial, radial, tangential and close-clearance designs · single or multi-stage shafts
Drives
FLP / non-FLP motors, flange- or foot-mounted · inline, parallel or right-angle gearboxes
Sealing
Single or double mechanical seal, stuffing box or sealless magnetic-drive coupling
Materials
SS 304 / 316L / 904L, duplex grades, Hastelloy C-276 and other alloys — solid, clad, mirror-polished or electropolished
Vertical agitator test bench in the Steelcon assembly bay
Trial-run before dispatch Static and dynamic balancing · air run (runout, vibration, noise, sweep, verticality) · water run at working pressure (rpm, amps, temperatures) · hydrostatic testing · alignment and seal checks — on our vertical trial bench, 12 m hook height

Every assembly is run on our in-house benches and the results — speeds, balance, alignment and test records — go into the documentation dossier with the equipment.

What to tell us about your mixing duty

A drawing or datasheet is ideal. If you are starting from the process, these points let our engineers propose an impeller and drive in the first reply.

The process Capacity, specific gravity and viscosity; what the agitator must achieve — blend, suspend, disperse gas or solids, transfer heat.
The vessel Inside diameter and TL–TL length, head types, baffles, design pressure and temperature, construction code and stamping.
The assembly Entry and mounting, number of stages, impeller type if known, rpm, motor (FLP / non-FLP) and gearbox preference.
Sealing & materials Seal type, wetted and non-wetted materials, surface finish — or simply the medium, and we will propose them.
Send your mixing datasheet

Related

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No datasheet yet? Enter the design data you have, section by section, and we will work out the rest.

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