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Which sand is generally used repetitively for mould making?

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in Casting-Forming-Welding I by (687k points)
Which sand is generally used repetitively for mould making?

(a) Silica sand

(b) Zircon

(c) Olivine

(d) Dolomite

This question was posed to me in final exam.

This intriguing question originated from Refractory Sands topic in division Molding and Core Sands of Casting-Forming-Welding I

1 Answer

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Best answer
Correct option is (a) Silica sand

Best explanation: Silica sand has this as one of its advantages, that it can be used again and again for making moulds. This repetitive use of silica sand makes production even more inexpensive.

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