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What is the melting point of Silica, for granular refractories?(a) 3453°F(b) 3206°F(c) 3119°F(d) 3467°FI have been asked this question in an international level competition.I'm obligated to ask this question of Indian Sand and core sand topic in chapter Molding and Core Sands of Casting-Forming-Welding I

Answer»

Correct CHOICE is (c) 3119°F

For EXPLANATION: According to the properties of granular refractories, Silica has a MELTING point TEMPERATURE of 3119°F. The melting points of silica and chamotte are CALCULATED to be almost equal.



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