For handling hot, abrasive “ash” and similar residues from boilers and furnaces, which conveyor type is generally the most suitable and robust choice?

Introduction / Context:
Ash handling demands equipment that tolerates abrasion, elevated temperature, and sometimes wet/slurry conditions. The conveyor must provide positive displacement transport with minimal spillage and high wear resistance.

Given Data / Assumptions:

• Material: hot, abrasive ash or clinker-like residues.
• Operating environment: harsh, often at boiler/furnace discharge.
• Goal: reliable, contained conveyance.

Concept / Approach:
Flight (scraper) conveyors drag material along the bottom of a trough using flights fixed to chains. This positive mechanical conveying is suited to abrasive, hot materials, allowing cooling sections or quench baths. Belt conveyors are vulnerable to abrasion and heat; ribbon conveyors suit mixing, not bulk transfer; dilute-phase pneumatic systems risk erosion and dust control issues.

Step-by-Step Solution:

Verification / Alternative check:
Power plants and foundries widely use submerged scraper conveyors or dry flight conveyors for bottom ash and clinkers, confirming the selection.

Why Other Options Are Wrong:

Common Pitfalls:
Overlooking temperature limits of belts; underestimating abrasion on pneumatic elbows; confusing slat with scraper terminology without considering specific ash system design.

Final Answer:
Flight (scraper) conveyor