NOTE: Questions 16-19 are under the one Category of Cement Production. There are four different zones in a burning kiln (before cooling): Dehydration zone Calcination zone Solid-state reaction zone Clinkering zone. After the rapid cooling process, this process creates the four main cement minerals: C3S C2S C4AF C3A Which zone is involved in the largest CO2 emission during the cement clinkering production? Select the correct answer from the list (2 marks)

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NOTE: Questions 16-19 are under the one Category of Cement Production.

There are four different zones in a burning kiln (before cooling):

After the rapid cooling process, this process creates the four main cement minerals:

Which zone is involved in the largest CO2 emission during the cement clinkering production? Select the correct answer from the list (2 marks)

Clinkering zone

❌

Calcination zone

✅

Solid-state reaction zone

❌

Dehydration zone

❌

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