Temperature of molten pig iron (1450°C) and molten slag (1500°C) flowing out of a blast furnace is measured by a/an ___

Temperature of molten pig iron (1450°C) and molten slag (1500°C) flowing out of a blast furnace is measured by a/an

A. chromel-alumel thermocouple
B. optical pyrometer
C. radiation pyrometer
D. either optical pyrometer or radiation pyrometer

Show Answer

Answer: D

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