Question: 6- Answer the questions by carefully examining the graph below (20p) a) Choose and write the name of the weakest and the best refractory material

6- Answer the questions by carefully examining the graph below (20p) a) Choose and write the name of the weakest and the best refractory material among given refractory materials and give explanation about your selection ? b) Explain the weakest refractory behavior by considering its chemical nature and composition EXPANSION Maintained Temperature Chrome Test at 1000 Magnesite .Sion Silica Mullite Fr/ ME Aluminous Fire brick Normal Test 10 Temperature rising Minutes at rate of 10C/minute Siliceous Firebrick CONTRACTION 400 800 1200 1600 TEMPERATURE C 6- Answer the questions by carefully examining the graph below (20p) a) Choose and write the name of the weakest and the best refractory material among given refractory materials and give explanation about your selection ? b) Explain the weakest refractory behavior by considering its chemical nature and composition EXPANSION Maintained Temperature Chrome Test at 1000 Magnesite .Sion Silica Mullite Fr/ ME Aluminous Fire brick Normal Test 10 Temperature rising Minutes at rate of 10C/minute Siliceous Firebrick CONTRACTION 400 800 1200 1600 TEMPERATURE C
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