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What is the purpose of auxiliary tuyeres?

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in Casting-Forming-Welding II by (119k points)
What is the purpose of auxiliary tuyeres?

(a) Raise solidification efficiency

(b) Drop solidification efficiency

(c) Raise melting efficiency

(d) Drop melting efficiency

This question was posed to me in a job interview.

Origin of the question is Cupola in portion Metal Furnace and Practice of Casting-Forming-Welding II

1 Answer

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Best answer
Correct answer is (c) Raise melting efficiency

Explanation: Auxiliary tuyeres are basically used for providing to increase melting efficiency. They are fitted in one or more number of rows.

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