Answer:
c. rotary kiln
Explanation:
In the manufacture of cement, the dry or wet mixture of calcareous (calcium-containing) and argillaceous (clay-containing) materials is typically burnt in a rotary kiln. This type of kiln provides the necessary high temperatures and controlled environment to facilitate the chemical reactions that form clinker, the key ingredient in cement.
In the manufacture of cement, the dry or wet mixture of calcareous and argillaceous materials is typically burnt in a c) rotary kiln.
In the manufacturing process of cement, calcareous and argillaceous materials are key ingredients. These materials, often in the form of limestone and clay, are combined in specific proportions and then subjected to high temperatures in a kiln to produce cement clinker.
The type of kiln used in this process plays a significant role in the efficiency and quality of cement production. One common type of kiln used in cement manufacturing is the rotary kiln. In a rotary kiln, the materials are fed into a rotating cylinder, which slowly turns as the materials move through it.