For transporting hot, lumpy, and highly abrasive bulk materials, which conveyor type is generally preferred for durability and reliability?

Introduction / Context:
Materials handling equipment must match the thermal, mechanical, and abrasive characteristics of the load. High temperatures, sharp lumps, and abrasion quickly damage flexible belts or screws.

Concept / Approach:
Apron conveyors use overlapping metal pans bolted to heavy chains. They tolerate heat, impact, and abrasion far better than fabric belts. Screws and drag conveyors can move abrasive solids but suffer significant wear; belts are generally avoided for very hot or sharp, abrasive lumps unless specially engineered.

Step-by-Step Solution:
Identify key stresses: heat + impact + abrasion.Match to rugged design: metal pan apron conveyor.Select apron as preferred solution.

Final Answer:
Apron (pan) conveyor