Editorial Technical Reference

Mixing Unit

This page explains how Mixing Unit is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

The core component of an asphalt mixing plant where aggregates, filler, and bitumen are thoroughly blended to produce homogeneous asphalt mixture.

Product Specifications

Technical details and manufacturing context for Mixing Unit

Definition
The mixing unit is the central processing component within an asphalt mixing plant, responsible for the precise and uniform combination of heated aggregates, mineral filler, and liquid bitumen. It operates under controlled temperature and timing conditions to ensure the asphalt mixture achieves the required consistency, coating quality, and material properties for road construction applications. The unit is designed as a batch mixer, with a mixing capacity typically ranging from 100 to 400 tonnes per hour, matching the plant's output. The mixer volume varies from 2 to 6 cubic meters, determining the batch size. Mixer speed is typically 30 to 60 revolutions per minute, affecting mixing quality. Mixing time, including dry and wet mixing, is usually 30 to 60 seconds. Motor power ranges from 75 to 250 kW, depending on capacity. Operating temperature for asphalt mixing is typically 140 to 180 degrees Celsius. Noise level at 1 meter distance is up to 85 dB(A) per ISO 3744. The structural steel grade is Q345B per GB/T 1591. Dry weight ranges from 15 to 40 tonnes, and dimensions vary with capacity, typically 5000–8000 mm in length, 2000–3000 mm in width, and 2500–4000 mm in height. Power supply is three-phase, 50 Hz, 380 V AC ±10% per IEC 60038. Materials used include high-strength alloy steel, abrasion-resistant steel plate, and heat-resistant seals. The mixing unit is a component, not a standalone machine, and must be integrated into a complete asphalt mixing plant. For procurement, verify model-specific values and standards with the legal manufacturer or supplier, as the listed ranges are reference only.
Working Principle
Pre-heated aggregates and filler are fed into the mixing chamber. Simultaneously, precisely metered hot bitumen is sprayed into the chamber. A set of rotating paddles or blades (mixing arms) vigorously stir and lift the materials, ensuring each aggregate particle is fully coated with bitumen. The mixing action continues for a predetermined cycle time to achieve a homogeneous blend before discharge. The process is batch-based, with each cycle including dry mixing and wet mixing phases. The mixing time and speed are adjustable to suit different mix designs. The unit operates under controlled temperature and pressure to ensure proper coating and consistency. After mixing, the homogeneous asphalt mixture is discharged for further processing or transport.
Common Materials
High-strength alloy steel, Abrasion-resistant steel plate, Heat-resistant seals
Technical Parameters
ParameterTypical rangeNotes & selection driver
Mixing Capacity100–400 t/hMatches plant output
Mixer Volume2–6 Determines batch size
Mixer Speed30–60 rpmAffects mixing quality
Mixing Time30–60 sTypical dry and wet mixing
Motor Power75–250 kWDepends on capacity
Operating Temperature140–180 °CAsphalt mixing temperature
Noise Level≤85 dB(A)At 1 m distanceISO 3744
Material GradeQ345BStructural steelGB/T 1591
Weight15–40 tDry weight
Dimensions (L×W×H)5000–8000×2000–3000×2500–4000 mmVaries with capacity
Power Supply380±10% V ACThree-phase, 50 HzIEC 60038

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
  • Mixing Chamber / Bowl Part
    The enclosed vessel that contains the materials during the mixing process.
    Material: Abrasion-resistant steel plate
  • Mixing Shaft Part
    The central rotating shaft to which the mixing arms are attached.
    Material: High-strength alloy steel
  • Mixing Arms / Paddles Part
    Blades attached to the shaft that physically stir and lift the aggregate and bitumen.
    Material: Abrasion-resistant alloy steel (often with replaceable tips)
  • Discharge Gate
    A mechanized door at the bottom of the mixing chamber that opens to release the finished batch.
    Material: Steel with heat-resistant seals
  • Drive System
    Motor, gearbox, and couplings that provide power to rotate the mixing shaft.
    Material: Various (steel, cast iron, copper windings)

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Mixing Unit.

Applied To / Applications

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

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric to 0.5 bar (mixing chamber)
flow rate: 50-400 t/h (typical asphalt plant capacity)
temperature: 150-200°C (bitumen heating range)
slurry concentration: N/A (dry mixing process)
Media Compatibility
✓ Hot bitumen binder ✓ Mineral aggregates (crushed stone, sand) ✓ Filler materials (limestone dust, cement)
Unsuitable: Corrosive chemical slurries or acidic environments
Sizing Data Required
  • Required asphalt production capacity (t/h)
  • Aggregate gradation and mix design complexity
  • Available plant footprint and power supply constraints

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Bearing failure
Cause: Contamination from process materials, inadequate lubrication, or misalignment leading to excessive vibration and wear
Seal leakage
Cause: Wear from abrasive particles in the mixture, thermal cycling causing material degradation, or improper installation
Maintenance Indicators
  • Unusual grinding or knocking sounds from the mixing chamber
  • Visible leakage of process fluids around shaft seals or housing joints
Engineering Tips
  • Implement condition-based monitoring with vibration analysis and thermography to detect early bearing and alignment issues
  • Establish a proactive lubrication program with proper intervals and contamination control for all rotating components

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
ANSI/ASME BPE-2019 - Bioprocessing Equipment DIN 11864-1 - Fittings for the food industry

Quoted from the published standard.

Manufacturing Precision
  • Shaft alignment: +/-0.05mm
  • Surface finish: Ra ≤ 0.8μm
Quality Inspection
  • Pressure Test (hydrostatic/pneumatic)
  • Material Verification (PMI - Positive Material Identification)

Manufacturers of Mixing Unit

2 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Sunfly
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Manifold Mixing Units”
View source page ↗ sunflyhvac.com · checked 2026-09-14
Zhejiang Henghui Machinery Co., Ltd.
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Mixing Unit”
View source page ↗ henghui-machinery.com · checked 2026-09-05

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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Frequently Asked Questions

What is the typical mixing capacity of this unit?

The mixing capacity typically ranges from 100 to 400 tonnes per hour, matching the plant output. However, the exact capacity depends on the specific model and application, so verify with the manufacturer.

What materials are used in the construction?

The unit uses high-strength alloy steel, abrasion-resistant steel plate, and heat-resistant seals. The structural steel grade is Q345B per GB/T 1591. These materials are selected for durability and resistance to wear and heat.

What standards are referenced for this product?

The product references applicable standards for operating pressure testing, ISO 3744 for noise level measurement, GB/T 1591 for material grade, and IEC 60038 for power supply. These standards are procurement references, not proof of certification. Verify compliance with the manufacturer.

Data Basis

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

Preliminary Technical Classification
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