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Q: The processes used for the manufacture of cement can be classified into______.
  • A. Five
  • B. Four
  • C. Three
  • D. Two
Correct Answer: Option D - The method of manufacturing can be classified into two categories– (i) Wet method–the materials are crushed and mixed with water and the charge placed in the kiln contains approximately 35% water. This process generally used when raw materials are soft because complete mixing is not possible unless water is added by this process cement production cost and quality is high. (ii) Dry method–The materials are crushed and mixed after drying and the dry mixture is placed in the kiln. • Grinding and mixing were more difficult in the dry process than in wet process. In dry process fuel consumption is lower as compared to the wet process.
D. The method of manufacturing can be classified into two categories– (i) Wet method–the materials are crushed and mixed with water and the charge placed in the kiln contains approximately 35% water. This process generally used when raw materials are soft because complete mixing is not possible unless water is added by this process cement production cost and quality is high. (ii) Dry method–The materials are crushed and mixed after drying and the dry mixture is placed in the kiln. • Grinding and mixing were more difficult in the dry process than in wet process. In dry process fuel consumption is lower as compared to the wet process.

Explanations:

The method of manufacturing can be classified into two categories– (i) Wet method–the materials are crushed and mixed with water and the charge placed in the kiln contains approximately 35% water. This process generally used when raw materials are soft because complete mixing is not possible unless water is added by this process cement production cost and quality is high. (ii) Dry method–The materials are crushed and mixed after drying and the dry mixture is placed in the kiln. • Grinding and mixing were more difficult in the dry process than in wet process. In dry process fuel consumption is lower as compared to the wet process.