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LECTURE 9 Refractory Materials

L E C T U R E 9 Refractory Materials Contents: Role of Refractory What is a Refractory ? Why required? Refractory requirements Melting point of some pure compounds used to manufacture Refractory Properties required in a Refractory Types of Refractory Materials Insulating Materials Key words: Refractory , steelmaking , furnaces Role of Refractory Refractory Materials have a crucial impact on the cost and quality of steel products. The diversification on steel products and their cleanliness requirement in recent years have increased the demand for high quality Refractory . steelmaking requires high temperatures of the order of 1600 degree centigrade. In addition steelmaking handles high temperature phases like molten steel, slag and hot gases.

• To allow thermal energy dependent conversion of chemically reactive reactants into products because metallic vessels are not suitable. In steelmaking, the physic o- chemical properties of the following phases are important:

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