Kumar , Amarjeet (2014) Development of Magnesia Spinel brick using Pre-synthesized and in-situ spinel. BTech thesis.
This Project is about designing the Development of magnesia-spinel brick using pre-synthesized and in-situ spinel. The spinel’s are a class of minerals of general formulation A 2+B3+2O2-4 which crystallize in the face centered cubic (isometric) crystal system, with the oxide anions arranged in a cubic close-packed lattice. The cation A fills the tetrahedral sites and cation B fills the octahedral sites. A and B are divalent and trivalent cations respectively. Pre-synthesized spinel refractory is the refractory where the spinel material is synthesized separately and is then added into the brick composition. Where as in-situ spinel refractory is the refractory where the spinel forms inside the brick during the firing stages at higher temperatures. The brick compositions of pre synthesized spinel and in-situ spinel were taken and pressed to form bricks. The bricks upon sintering at 1550C and 1600C led to increase in density. The in-situ spinel brick was found to have higher BD, lower porosity and higher shrinkage as compared to the pre synthesized spinel refractory brick.
|Item Type:||Thesis (BTech)|
|Uncontrolled Keywords:||Spinel; Presynthesized; insitu; sintering; refractory brick;|
|Subjects:||Engineering and Technology > Ceramic Engnieering > Refractories|
|Divisions:||Engineering and Technology > Department of Ceramic Engineering|
|Deposited By:||Hemanta Biswal|
|Deposited On:||25 Aug 2014 19:56|
|Last Modified:||25 Aug 2014 19:56|
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