3.5. Pollution prevention in the cement industry
The process-based pollution preventive measures in the cement
industry are shown in the following table:
As per Table 5, dust particles are emitted at the time of clinker
crushing, grinding and packing processes, resulting in air pollution.
In the clinker operation, emission of particles in different sizes can
be prevented through providing an emissions control system under
the ‘automation improvement’ option. However, this option is not
found to be followed by the sample cement plants. In the grinding
operation, the recycling of furnace gas and an adequate ventilation
system can be introduced under ‘on-site recycling and reuse’ and