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The temperature of glass-melting furnace is around ______

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in Food Packaging Technology by (63.0k points)
The temperature of glass-melting furnace is around ______

(a) 800°C

(b) 1000°C

(c) 1100°C

(d) 1500°C

This question was addressed to me in an online interview.

Origin of the question is Manufacture of Glass in portion Glass Packaging Materials of Food Packaging Technology

1 Answer

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Best answer
Correct choice is (d) 1500°C

The best explanation: The raw materials are weighed, mixed and charged into a glass-melting furnace, which is maintained at a temperature of approximately 1500°C. Here, they are converted into molten glass that is chemically homogeneous and virtually free of gaseous inclusions (bubbles). The melting process consists of two phases: (i) changing the solids into a liquid and (ii) fining or “clearing up” of the liquid.

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