Waste Coal: How to Avoid Flow Stoppages During Storage and Handling.

The article concerns several principles of reliable waste coals handling to prevent stagnant regions of waste coal in a silo and spontaneous combustion. The principles discussed apply to all bulk solid materials handled at power plants. It cites factors behind the most common flow problems experienced in an improperly designed bunker, silo or bin and explains how to avoid flow stoppages during storage and handling of coal by means of the standardization of a handling system. It also discusses the conditions that must be met to achieve mass flow as well as the necessary steepness and smoothness a hopper surface should be.