Bulk solids handling: which conveyor is most suitable for long-distance transport of cold, non-abrasive, granular or fine materials?

Introduction / Context:
Choosing a conveyor depends on distance, material abrasiveness, lump size, and capacity. For extended runs moving cold, non-abrasive bulk solids, one option predominates in industry.

Given Data / Assumptions:

• Material: granular/fines, non-abrasive, ambient temperature.
• Distance: long (tens to hundreds of metres or more).

Concept / Approach:
Belt conveyors provide high capacity, low specific power, and gentle handling over long distances with minimal transfer points. Alternatives like screw or apron conveyors are better for short distances or very abrasive/hot service; bucket elevators are vertical or steep-incline devices, not for long horizontal runs.

Step-by-Step Solution:
Match requirement (long distance, gentle handling) → Belt conveyors.Eliminate others: screws for short runs, apron for heavy/abrasive lumps, bucket for elevation.Select “Belt conveyor.”

Verification / Alternative check:
Plant layouts for grains, fertilizers, and packaged solids commonly deploy belt conveyors for long corridors and overland conveying.

Why Other Options Are Wrong:
Bucket: vertical service.Screw: short distances; high wear with long runs.Apron: robust but slow/heavy; suited to hot, abrasive lumps.

Common Pitfalls:
Underspecifying idler spacing and skirt sealing for fines; ignoring belt speed limits for dusting or degradation.

Final Answer:
Belt conveyor