USED 2022 HARPER GU-60D420-RT-WC-550

Unused Harper International (USA) model GU-60D420-RT-WC-550 indirectly heated, natural gas-fired rotary calciner / roasting kiln system with separate water-cooled rotary cooling section. Manufactured 2022–2023, unused.

Heating section features approximately 60" (1,524 mm) ID Inconel 600 process tube with 420" (10.7 m) heated length. Three independently controlled heating zones, maximum chamber temperature 550°C (1,022°F), designed operating temperature 450–500°C. Four natural gas burners with approximately 3.0 MMBtu/hr combined heating capacity. Variable-speed rotary tube drive, 0.2–2 RPM.

Separate rotary cooling section with 316 stainless steel tube, approximately 420" (10.7 m) active cooling length, external water spray cooling, and designed product discharge temperature below 50°C.

Includes combustion air blower, rotary tube drives and supports, entrance and exit hoods, material transfer chute, pneumatic tube knocker, control system with HMI, and spare guide rollers and bearings. Electrical requirements approximately 480 V, 3-phase, 60 Hz, 80 amps connected.

System reported complete and unused by owner. Equipment is unassembled, with many components still in manufacturer packaging. Technical details available on request.

Approximate installed dimensions 101' L × 15' W × 28' H.