Question

what is the next cement production processing step after the limestone and clay go through the mixer?
a heat is applied to the powder
b the powder goes through the grinder
c the powder goes through the mixer
d the powder goes through the rotating heater

Explanation:

Step1: Analyze the left diagram

The left diagram shows the cement production process. After the limestone and clay go through the crusher, the next step in the process is that the powder goes through the rotating heater.

Answer:

D. The powder goes through the rotating heater