Automatic ventilation control systemThe Third Mine, Belaruskali

(Republic of Belarus)

The purpose is to reduce operating ventilation cost

Which elements does the system consist of?

Main Fan Unit

Recirculation Fan Units

Main Fan Unit

Automatic regulators

Recirculation Fan Units

Main Fan Unit

How does the equipment look?

Recirculation Fan Unit

Automatic Regulator

Automatic Regulator

How does the system work?

Main Fan Operating Speed Adjusting

Main Fan Operating Speed Adjusting

Controlled Airflow Recirculation

Automatic Air Flow Redistribution

Main Fan Operating Speed Adjusting

Controlled Airflow Recirculation

Automatic Air Flow Redistribution

Main Fan Operating Speed Adjusting

Controlled Airflow Recirculation

Gas concentration sensors are used to determine a critical reused air flow rate which is regulated by adjusting recirculation fan unit operating speed

Air flow is distributed depending on a current air demand in mine areas. Redistribution is performed by setting a new angle for regulator’s leafs. Angles for regulators’ leafs are determined automatically by required airflow values for different mine areas.

Total mine air flow is determined by all underground consumers requirements and regulated by fan operating speed which is adjusted via drive frequency.

What a result?

Total Airflow

510 m3/s

360 m3/s

Main Fan Power Efficiency

2.7 MW

1.6 MW

Air Distribution Disbalance

18 %

7 %

Capital Cost

$4 000 000

Savingsin Annual Operating Cost

$1 600 000