The EMLI FT system is specifically designed to track extremely fast moving surfaces so as to provide vital information to control the process and ascertain optimum melting, charging and additions conditions. 

The system works well in all kinds of industrial environments and can handle many different times of furnace conditions. 

An optional plunger unit is available to keep the microwave access port clear in applications where splashing/skulling is severe.

the system can be customized to fit your needs and several different options for measurement display.   In addition to tracking slag, the system can measure hot heel and fill levels.

How Measurements are Made

The EMLI FT Sensor Unit is adapted to fit to the different locations points for the measurement application being undertaken.  Mounted vertically on BOF Converter Fume Hoods, EAF Roof Panels, CONARC Roof Panels, Vacuum Degasser Lids, etc., in such a way as to be able to obtain continuous measurement of the surfaces below.  The EMLI FT utilizes special polarizing microwave techniques to sample data in real time.

The sensor unit takes multiple measurements per second, constantly monitoring the surface movement and the level of the slag/metal foaming. The information can be used to monitor and adjust important furnace/degasser parameters such as rate of blow or arc. lance position, vacuum pressure etc. thus  assisting in the control of slopping, additions and processing time.

The charts below show slag tracking trends in a BOF converter and and EAF.  Manual verification was only possible in the EAF vessel.