Discussion
Clinker leaving the cooler is typically at a temperature of about
Answer: A
Correct answer: 100 degrees Celsius or a little above
A well-performing grate cooler brings the clinker down from about 1,400 degrees to a little over 100, recovering most of the heat into the secondary and tertiary air. Clinker much hotter than that heats the cement mill and can dehydrate the gypsum, so cooler performance is watched for that reason as well as for the heat recovery.
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