Editorial Technical Reference

Agitator/Mixer

This page explains how Agitator/Mixer is classified within Chemical Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A mechanical device used to mix, blend, or agitate fluids or slurries within a tank.

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Product Specifications

Technical details and manufacturing context for Agitator/Mixer

Definition
An agitator or mixer is a critical component of a slurry tank, designed to create motion within the fluid to ensure homogeneity, prevent sedimentation, enhance chemical reactions, or maintain uniform temperature and concentration. It typically consists of a motor, shaft, and impeller(s) mounted inside the tank. The agitator is selected based on process requirements such as tank volume, fluid viscosity, and desired mixing intensity. Common materials include stainless steel (e.g. 304, 316L), carbon steel, and specialty alloys for corrosive media. Key parameters include tank volume (0.5–100 m³), agitator speed (10–300 rpm), motor power (0.75–75 kW), shaft diameter (50–200 mm), impeller diameter (200–1500 mm), operating temperature (-20 to 200 °C), and operating pressure (1.0–1.6 MPa). Shaft seal types include single or double mechanical seals, with double seals recommended for hazardous fluids. Wetted material is typically SS316L (ASTM A240), with surface finish Ra ≤ 0.8 μm (Ra ≤ 0.4 μm for sanitary applications). Electrical supply is 380 V / 50 Hz (IEC 60038), ingress protection IP54–IP65 (IEC 60529), noise level ≤ 85 dB(A) at 1 m (ISO 3744), and weight ranges from 500 to 5000 kg. These values are reference ranges; verify model-specific specifications with the legal manufacturer or supplier before procurement.
Working Principle
A motor provides rotational energy to a shaft, which transmits this motion to one or more impellers submerged in the slurry. The impeller's design (e.g., propeller, turbine, paddle) creates fluid flow patterns (axial, radial, or tangential) that induce mixing, blending, and suspension of solids within the tank. The agitator speed and impeller diameter are selected to achieve the required flow and shear for the specific application. Proper shaft stiffness and critical speed analysis are essential to avoid vibration and mechanical failure. The mechanical seal prevents leakage along the shaft, and its selection depends on the fluid's hazardous nature and operating conditions.
Common Materials
Stainless Steel (e.g., 304, 316L), Carbon Steel, Specialty Alloys (for corrosive media)
Technical Parameters
ParameterTypical rangeNotes & selection driver
Tank Volume0.5–100 m³Select based on process batch size.
Agitator Speed10–300 rpmDepends on viscosity and mixing intensity.
Motor Power0.75–75 kWSufficient for required torque and speed.
Shaft Diameter50–200 mmDetermines stiffness and critical speed.
Impeller Diameter200–1500 mmRatio to tank diameter affects flow pattern.
Operating Temperature-20–200 °CMaterial selection may limit upper range.
Shaft Seal TypeMechanical sealSingle or double seal; double for hazardous fluids.
Wetted MaterialSS316LOther options: SS304, Hastelloy, etc.ASTM A240
Surface FinishRa ≤ 0.8 μmFor sanitary applications, Ra ≤ 0.4.
Electrical Supply380 V / 50 HzOther voltages available on request.IEC 60038
Ingress ProtectionIP54–IP65Higher IP for washdown environments.IEC 60529
Noise Level≤ 85 dB(A)At 1 m distance; may require enclosure.ISO 3744
Weight500–5000 kgDepends on size and material.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Motor
    Provides the rotational power to drive the shaft and impeller.
    Material: Cast Iron / Aluminum Alloy Housing
  • Shaft Part
    Transmits torque from the motor to the impeller(s), often submerged in the slurry.
    Material: Stainless Steel / Carbon Steel
  • Impeller
    The rotating element that directly contacts the fluid, creating flow and shear for mixing.
    Material: Stainless Steel / Special Alloy / Plastic (e.g., PTFE)
  • Seal (Mechanical or Packing) Part
    Prevents leakage of the slurry from the tank where the rotating shaft penetrates the tank wall.
    Material: Carbon / Ceramic / Elastomers

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Slurry Tank
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Reagent Storage Hopper
View system integration details
Mud Mixing and Pumping System
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 10 bar
flow rate: 0-500 m³/h
temperature: -20°C to 150°C
slurry concentration: Up to 60% solids by weight
Media Compatibility
✓ Water-based slurries ✓ Chemical solutions ✓ Food-grade liquids
Unsuitable: Highly abrasive slurries with >60% solids
Sizing Data Required
  • Tank volume (m³)
  • Fluid viscosity (cP)
  • Required mixing intensity (RPM)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Bearing failure
Cause: Inadequate lubrication, contamination from process fluids, or misalignment leading to excessive vibration and heat generation.
Shaft seal leakage
Cause: Wear from abrasive media, improper installation, or thermal cycling causing seal material degradation and loss of sealing integrity.
Maintenance Indicators
  • Unusual vibration or audible knocking sounds during operation indicating mechanical imbalance or bearing issues
  • Visible leakage around shaft seals or excessive temperature rise in motor/bearing housings
Engineering Tips
  • Implement predictive maintenance with vibration analysis and thermography to detect early-stage bearing and alignment issues before catastrophic failure
  • Use appropriate seal materials compatible with process fluids and install double mechanical seals with barrier fluid systems for critical applications

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 2858:2012 (End-suction centrifugal pumps - Designation, nominal duty point and dimensions) ANSI/ASME B73.1-2012 (Specification for Horizontal End Suction Centrifugal Pumps for Chemical Process) DIN 28136 (Agitators - Shaft ends for top entry agitators)

Quoted from the published standard.

Manufacturing Precision
  • Shaft runout: ≤0.05 mm
  • Impeller balance: G6.3 per ISO 1940-1
Quality Inspection
  • Non-Destructive Testing (NDT) - Magnetic Particle or Dye Penetrant for welds
  • Hydrostatic pressure test at 1.5x design pressure

Manufacturers of Agitator/Mixer

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Frequently Asked Questions

What is the typical tank volume range for this agitator?

The reference tank volume range is 0.5 to 100 m³, but the actual selection depends on the process batch size. Confirm the required volume with the manufacturer.

How is the agitator speed determined?

Agitator speed (10–300 rpm) is selected based on fluid viscosity and mixing intensity. Higher speeds are used for low-viscosity fluids, while lower speeds are suitable for high-viscosity or shear-sensitive materials.

What materials are available for wetted parts?

Wetted parts can be made of stainless steel (e.g., 304, 316L), carbon steel, or specialty alloys for corrosive media. The default wetted material is SS316L per ASTM A240, but other options like SS304 or Hastelloy may be available on request.

What is the operating pressure and temperature range?

The operating pressure range is 1.0–1.6 MPa, and the operating temperature range is -20 to 200 °C. Material selection may limit the upper temperature range, so verify with the supplier.
Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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