Online coal ash analysis
Online coal ash analysis technologies continuously measure the total ash content in coal on a belt conveyor and report the results to the plant PLC in real time where it is used for informed decision making and process control. On-line ash analysis has been used in modern coal mining and beneficiation since the early 1980’s.
On-line coal ash analysis technologies measures gamma ray absorption which correlates highly with ash content of coal.
Two technologies are used. These are dual-energy transmission (DUET), also referred to as low-energy transmission (LET), and natural gamma absorption.
Online ash analysers are used widely in the coal and power industries along the value-added chain from pit to power station. Uses include:
- Sorting of coal
- Blending of coal
- Quality control
- Maximizing coal recovery
- Environmental compliance
- Optimizing Boiler Efficiency