Raj, Kundan and Sood, Sidharth and Panda, Amlan Prateek and Panigrahi, Sridhar Kumar and Pabba, Abhimanyu (2011) An attempt at optimizing the flow characteristics of blast furnace slag by investigation of synthetic slags prepared in the laboratory using pure oxides. BTech thesis.
In the cohesive zone the ore layer becomes compacted due to softening-melting and the gas passes predominantly through the sandwiched coke layer (coke slits). Minimizing the size and lowering the position of the cohesive zone will improve productivity and decrease coke rate. This work is designed at arriving at a slag composition through actual experimentations which will ensure the lowering of the cohesive zone of the blast furnace with simultaneous decrease in the difference between the softening temperature (ST) and flow temperature (FT) of the slag. Slag samples from SAIL, Rourkela were brought and their flow characteristics were measured under the heating microscope. With the same composition as obtained from the plant, a synthetic slag was prepared in the laboratory. It was melted to 1600 °C and then water quenched to form the glassy state. Flow characteristics for the same were also determined. In addition, all slag samples were sent to DISIR, Rajgangpur for slag analysis as well as to determine the mineralogical phases present in them. For this, they heated the slag samples to 1500 °C followed by slow cooling to convert them to crystalline form. Then, XRD analysis was done to determine the mineralogical phases. Finally, with relevant phase diagram study, we arrived at a composition which will ensure the lowering of cohesive zone. Moreover, flow characteristics data of synthetic slag was compared with that obtained from Blast Furnace slag.
|Item Type:||Thesis (BTech)|
|Uncontrolled Keywords:||Cohesive zone, Blast Furnace Slag, Blast Furnace Slag flow characteristics,|
|Subjects:||Engineering and Technology > Metallurgical and Materials Science > Extractive Metallurgy|
Engineering and Technology > Metallurgical and Materials Science > Cast Iron
|Divisions:||Engineering and Technology > Department of Metallurgical and Materials Engineering|
|Deposited By:||Mr Kundan Raj|
|Deposited On:||11 May 2011 14:32|
|Last Modified:||16 May 2011 11:17|
|Supervisor(s):||Sarkar, S and Mohanty, U K|
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