Manufacturer Information

Manufacturer: Harper International
Model: GU-6D60-RTA-24
Serial Number: AT044
Equipment Type: Rotary Calciner / Rotary Kiln
Heating Method: Indirect Gas Fired
Condition: Used
Original Blower Build Year: 1995
Major Upgrades: 2024

Description

Available for sale is a used Harper International Model GU-6D60-RTA-24 Rotary Calciner, engineered for high-temperature thermal processing, calcination, drying, activation, heat treatment, and material conversion applications. This laboratory and pilot-scale rotary kiln features a 6-inch diameter process tube measuring 10 feet in length and is designed for operating temperatures up to 2,400°F.

The system is indirect gas fired and includes a complete gas train, fresh air blower package, and three-burner heating configuration to provide precise thermal control and uniform heat distribution. The rotary tube is reportedly constructed from HT-Alloy material (subject to confirmation), offering high-temperature performance and durability.

Significant upgrades were completed in 2024, including replacement of the control system, kiln motor, feeder, discharge assembly, seals, and natural gas conversion system. These recent improvements substantially enhance reliability, control capabilities, and operational efficiency.

This Harper rotary calciner is ideally suited for research, development, pilot plant operations, specialty material processing, advanced ceramics, catalyst production, battery materials, chemical processing, and thermal treatment applications.

Specifications

General Information

• Manufacturer: Harper International
• Model: GU-6D60-RTA-24
• Serial Number: AT044
• Equipment Type: Rotary Calciner
• Kiln Type: Rotary Kiln
• Heating Method: Indirect Gas Fired
• Condition: Used

Tube Specifications

• Tube Diameter: 6 Inches
• Tube Length: 10 Feet
• Tube Material: Reportedly HT-Alloy (To Be Confirmed)

Operating Parameters

Maximum Operating Temperature

• 2,400°F

Maximum Tube Speed

• 10 RPM

Heating System

• Indirect Gas Fired Design
• Complete Gas Train Included
• Fresh Air Blower Included
• Three (3) Burner Configuration
• Uniform Thermal Processing

Drive System

Tube Drive

• 1/2 HP Leeson Gear Reduced DC Motor
• Chain and Sprocket Driven

Blower System

Fresh Air Blower

• Manufacturer: Eclipse Turbo Blower
• Motor Size: 1.5 HP
• Service: Gas Train Combustion Air

Recent Upgrades (2024)

The following components were reportedly replaced in 2024:

• Control System
• Kiln Drive Motor
• Feeder System
• Product Discharge System
• Process Seals
• Natural Gas Conversion System

Applications

• Calcination
• Thermal decomposition
• Catalyst activation
• Powder processing
• Ceramic processing
• Battery material production
• Carbon activation
• Mineral processing
• Specialty chemical processing
• Thermal oxidation
• Heat treatment
• Pilot plant development

Products This Equipment Would Be Used For

• Catalyst materials
• Ceramic powders
• Battery materials
• Carbon products
• Activated carbon
• Specialty minerals
• Metal oxides
• Chemical intermediates
• Research materials
• Advanced materials
• Industrial powders
• Laboratory production materials

Frequently Asked Questions

• What is the maximum operating temperature of this calciner?
  The rotary calciner is rated for temperatures up to 2,400°F.
• What are the tube dimensions?
  The process tube measures approximately 6 inches in diameter by 10 feet long.
• What type of heating system does the unit use?
  The kiln utilizes an indirect gas-fired heating system.
• How many burners are installed?
  The calciner is equipped with three burners for process heating.
• What is the maximum rotational speed?
  The rotary tube is rated for speeds up to 10 RPM.
• What type of drive system is installed?
  The kiln utilizes a 1/2 HP Leeson gear-reduced DC motor with chain and sprocket drive.
• What upgrades were completed in 2024?
  The control system, kiln motor, feeder, discharge system, seals, and natural gas conversion system were reportedly replaced in 2024.
• What material is the process tube constructed from?
  The tube is reportedly HT-Alloy construction, pending confirmation.
• What industries commonly use rotary calciners?
  Chemical processing, catalyst manufacturing, battery materials, ceramics, carbon processing, advanced materials, mining, and research facilities commonly use rotary calciners.
• What are the advantages of indirect firing?
  Indirect firing prevents direct flame contact with the product, providing cleaner processing conditions and more uniform heat transfer.
• Can Aaron Equipment assist with shipping and logistics?
  Yes, Aaron Equipment can coordinate inspections, dismantling, rigging, loading, transportation, export documentation, and worldwide logistics services.
• Does Aaron Equipment buy and sell used thermal processing equipment?
  Yes, Aaron Equipment actively purchases and sells used rotary kilns, calciners, dryers, furnaces, ovens, reactors, thermal processing systems, and complete manufacturing facilities worldwide.

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