With a projected consumption of nearly 400 million metric tonnes (for 2017), India is the second largest consumer of cement in the world.

1. Developed by the Chanderpur Group.
Optimization Technologies
for Cement Industry in India
Energy efficiency; Resource saving; Clean development

2. Cement in India: Overview
● With a projected consumption of nearly 400 million
metric tonnes (for 2017), India is the second largest
consumer of cement in the world.
● It’s also one of the largest producers of cement, with the
cement production seeing double digits growth rate.

4. Cement in India: Overview
(contd.)
● A large number of plants still use outdated technology,
making their production process inefficient and
expensive.
● The “technology gap” is further increasing because of
rapid rise in demand (especially from North-East Asia.

6. Emerging
Practices
A look at the new forms of cement
plant technologies emerging in
the Indian scene that help cement
manufacturers to optimize their
production process.

7. 1. ‘Max Feed’ for the Separator
● Grinding the feed to as coarse as possible and then filling
the Separator to the maximum capacity.
● Coarse feed increases the separation efficiency.
● Some plants also increase the air-velocity through the
mill. (The Separator has to be fine-tuned accordingly).
● Works best in plants working with closed circuits and high
efficiency separators.

8. 2. Over-grinding of Feed
● The particle size that results in the strongest constitution of cement ranges
from 3µ to 30µ.
● The objective is to increase the concentration of these particles in the final
output. This can be achieved by monitoring the PSD (Particle Size
Distribution)
● If the concentration of <3µ particles is more than 5%, then over grinding the
feed is a solution.
● However, that would increase energy consumption of the mill.
● Therefore, coarse over-grinding with high mill velocity is the best way to
reduce the concentration of <3µ particles and enhance the energy efficiency.

9. 3. Introduction of ‘New Variables’
● The most common way of gauging the produce quality is by
measuring the “Blaine” value.
● New research into production science shows that there are
better variables to check the quality.
● Blaine must be measured in conjunction with the value of
residues for a given circulation load.
● Lower the percentage of residue with respect to Blaine, the
higher the power efficiency of the plant.

10. Developed by the CHANDERPUR GROUP
For more information visit our site:
http://www.chanderpur.com/
Source: White Paper from Asia-Pacific Partnership (pdf)