CoreTemp

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CoreTemp is a system that allows the electric furnace operator to measure temperature along with other valuable attributes of the furnace throughout the melting process. The innovative approach employs optical fiber technologies to measure thermal radiation along with wire-feeding technologies.

Manless operation: no need to replace the sensor after each measurement
Increased safety: no need to be on the EAF platform during operation
Autonomous: Cored wire coil only need to be replaced after 1 week operation

CoreTemp was developed to assist the electric furnace steelmaker to solve some fundamental safety and operations challenges:

Reduce operator (people) exposure to molten metal by keeping personnel off the operating floor during temperature and level measurements
Improve process management with more data available more rapidly than traditional measurement methods
Save energy by keeping slag door closed, improving foamy slag retention
Determine if and when all scrap is melted
Detect un-melted scrap in sump area, avoiding delays from tap hole freezes
Safely measure level and temperature of residual heel

Rapid Decision Making due to Increased Measurement Frequency

The cycle time for CoreTemp is 20 seconds while a typical manipulator is 60 to 120 seconds.

Avoid super heated production cycles with rapid information for rapid decision making.

Decrease energy consumption through lowering tap temperatures due to better control.
CoreTemp's rapid measurement cycle enables the detection of melting/heating/molten phase transitions which can occur very rapidly and are easily missed with traditional temperature systems.

Manage and Reduce Power-on Time

Graphite electrodes are a coniderable cost per ton of steel, produced in all electric furnace processes.

CoreTemp provides additional information to the furnace operator who can incorporate it into their decisions. The power-on time can be more closely managed and ideally reduced in-turn reducing the graphite electrode consumption per heat of steel produces in an electric furnace.

Multiple Measurement Types for Multiple Benefits

Single measurements are to check if the bath is molten to begin the refinement phases of the process.

Sequence measurement are to establish heating rate, enabling the feature to determine target power off time and target tap temperature.

Improving Foamy Slag Practice

The advantages of good foamy slag practices are well known and widely published.

The implementation of CoreTemp allows the steelmaker to realize these benefits and decrease energy costs.

In addition to reduced energy consumption, there can be additional resulting savings in refractory life and graphite electrode consumption.

Bath Level Measurements and Trending

CoreTemp offers a Bath Level measurement capability along with an integrated trend calculation and prediction Graphed against Energy input to the Electric Melting Furnace

Bath Level Measurements obtained at established intervals
Target Bath Level Range predefined
Bath Level Predictive Trend displayed for proactive decision input

Technical Data

Item	Description
Measurement application	Temperature and Bath Level Measurement system
Measurement channel	One analog input
Sample rate	50 samples/second
Measurement ranges	600 to 1850°C (752 to 3362°F)
Accuracy	STDEV of 5°C over the coil length
Display resolution	1°
Display units	°C or °F
Power supply	380/480V 3phases 50/60Hz
Compressed air	3 to 8 bar
Air flow	2000 l/min blowing lance (max 5000 l/min), 800 l/min feeder +straightener

Download our Brochure

CoreTemp – Temperature and bath level measurement EAF
PDF | 2 MB | English