EXPERIMENTAL ACTIVITIES: (Conducted laboratory experiments to generate critically important process data under simulated conditions) 

The data needed for the development of the mathematical models were initially taken from open literature.  However, laboratory experiments were conducted to generate critically important process data under simulated conditions. In order to incorporate furnace specific features, information available from plant were utilized.   In order to tune the burden distribution model, relevant measurements were conducted during blowing-in of BF No.1 at BSL-Bokaro. The thermo chemical model has made good use of the process data for tuning, generated by the special probes installed at the designated furnaces.  The freeze line model has been tuned with the hearth thermocouple data of multiple operating blast furnaces. 

The following are the various experimental setup established at NML to carry out the laboratory experiments:

1. Estimation of packed bed permeability using X-ray radiography
2. Estimation of Refractory Lining thickness using Non-Invasive Techniques
3. Estimation of softening melting behaviour of iron bearing material
4. Study of particle aerodynamics in simulated cold model of raceway using Particle Image Velocimetry (PIV)
5. Evaluation of viscosities of BF slag