Cold Feed Conveyor Belt

Function

The cold feed conveyor belt delivers a controlled, continuous stream of blended cold aggregate to the drying drum. Its rated capacity and running speed directly set the dryer's feed rate and, in turn, the plant's output in TPH. Belt slippage, tears, or excessive cover wear breaks the material continuity needed for consistent dryer loading, causing drum temperature excursions, increased fuel consumption, and quality inconsistency in the finished mix. Tracking drift and edge wear also generate spillage that accumulates beneath the conveyor, creating housekeeping and fire-risk hazards in the cold-feed bay.

Construction & quality

Multi-ply EP (polyester-polyamide) fabric carcass, 3-ply to 5-ply at 400–1000 N/mm breaking strength per the plant's drive and span requirements. Top cover in SBR or heat-resistant NR/SBR blend, 6–10 mm thick, Grade M or heat-resistant Grade T rated to 120 °C continuous surface temperature. Bottom cover 3–4 mm, plain smooth finish for troughing idler contact. Longitudinal edges vulcanised sealed. Belt joined with mechanical bolt-type fasteners or endless vulcanised splice depending on conveyor design. Standard widths 500 mm to 1200 mm (20 in to 47 in); length cut to order from continuous roll stock.

When to replace

• Longitudinal cracking or ply delamination along belt edges or centre line
• Exposed cord or fabric visible through top cover surface from gouging or abrasion
• Belt tracking drift causing persistent material spillage at one edge
• Slippage on the drive pulley under load despite correct tensioning
• Underside stiffening or surface glazing from heat exposure indicating compound degradation