Heating Drum for RAP Heating Systems | Component Specifications

Product Specifications

Technical details and manufacturing context for Heating Drum

Definition

The Heating Drum is a critical component of the RAP Heating System, designed as a rotating cylindrical vessel that provides uniform and controlled heating to materials (such as asphalt, aggregates, or industrial mixtures) as they pass through. It functions as the primary heat exchange surface, ensuring consistent temperature distribution and efficient thermal transfer required for processes like drying, heating, or maintaining material viscosity. The drum is typically constructed from carbon steel, stainless steel, or heat-resistant alloy, with material grades such as 304 or 316L (per ASTM A240) available for corrosive environments. Key parameters include a diameter of 800–2000 mm, length of 2000–6000 mm, heating capacity of 50–200 kW, rotation speed of 1–10 rpm, operating temperature of 100–300 °C, operating pressure of 1.0–1.6 MPa, surface hardness of HRC 50–60, surface roughness of Ra 0.8–1.6 µm, weight of 1500–8000 kg, electrical supply of 380–480 V AC (per IEC 60038), and ingress protection of IP54–IP65 (per IEC 60529). These values are reference ranges and must be verified for the specific model and application. The drum's design influences material throughput, heating capacity, residence time, and mixing efficiency. Proper selection requires consideration of material properties, required thermal output, and environmental conditions. Verification questions should address the actual operating parameters, material compatibility, and compliance with relevant standards. Maintenance signals include unusual wear patterns, surface degradation, or inconsistent heating. Failure boundaries include exceeding maximum operating temperature or pressure, which can lead to structural damage or reduced performance.

Working Principle

The drum rotates, tumbling the material inside while being heated externally (e.g., by gas burners, electric elements, or thermal oil jackets) or internally (via heated surfaces or mediums). Heat is transferred through conduction and radiation from the drum's walls to the material, with rotation ensuring even exposure and preventing hot spots or material degradation. The rotation speed and drum design control material mixing and heat transfer efficiency.

Common Materials

Carbon Steel, Stainless Steel, Heat-Resistant Alloy

Technical Parameters

Parameter	Typical range	Notes & selection driver
Diameter	800–2000 mm	Determines material throughput and footprint.
Length	2000–6000 mm	Affects heating capacity and residence time.
Heating Capacity	50–200 kW	Matches required thermal output for material.
Rotation Speed	1–10 rpm	Controls material mixing and heat transfer.
Operating Temperature	100–300 °C	Maximum depends on material and heating medium.
Surface Hardness	HRC 50–60	Ensures wear resistance for abrasive materials.
Surface Roughness	Ra 0.8–1.6 µm	Affects material release and cleaning ease.
Material Grade	304/316L	316L for corrosive environments.ASTM A240
Weight	1500–8000 kg	Affects installation and structural support.
Electrical Supply	380–480 V AC	Three-phase, 50/60 Hz.IEC 60038
Ingress Protection	IP54–IP65	Higher rating for dusty or wet environments.IEC 60529

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

Drum Shell Part
Primary structural and heat-transfer surface

Material: Carbon Steel/Stainless Steel
Internal Flighting Part
Lifts and tumbles material for even heating

Material: Wear-Resistant Steel
Support Rollers Part
Supports and facilitates drum rotation

Material: Forged Steel
Drive Gear Part
Transmits rotational force to the drum

Material: Alloy Steel
Gas Burners Optional
Heat the drum shell from outside on gas-fired builds.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Heating Drum.

Applied To / Applications

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

RAP Heating System

View system integration details

Manufacturers of Heating Drum

Manufacturer profiles associated with Heating Drum.

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Frequently Asked Questions

What materials are used for the Heating Drum?

The drum can be made from carbon steel, stainless steel, or heat-resistant alloy. For corrosive environments, stainless steel grades 304 or 316L (per ASTM A240) are available. The specific material grade should be confirmed with the manufacturer based on the application.

What is the operating temperature range?

The operating temperature range is 100–300 °C, depending on the material being processed and the heating medium. Always verify the maximum allowable temperature for your specific model to avoid damage.

How is the Heating Drum powered?

The drum requires a three-phase electrical supply of 380–480 V AC (per IEC 60038) and has an ingress protection rating of IP54–IP65 (per IEC 60529). Confirm the electrical requirements and environmental protection with the supplier.

What standards apply to the Heating Drum?

Relevant standards include ASTM A240 for material grades, IEC 60038 for electrical supply, and IEC 60529 for ingress protection. These are reference standards; 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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pressure:	Up to 10 bar (gauge)
flow rate:	5 to 50 m³/h
temperature:	150°C to 450°C
slurry concentration:	Up to 60% solids by weight

Heating Drum

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards