admin
1156 posts
TimePosted 22/08/2006 10:21:16
admin says

Re: Energy (thermal or electric)

There is not a straight-forward answer to this question. There are many possibilities and circuits for combinations of ball mills, roller presses and Sepax separators. You need to make a study of the performance of these various combinations and decide which one is best for your factory and particular constraints. A key questions is whether the circuits are only grinding clinker and cement or whether there are other requirements such as slag, fly ash or pozzolan? As a first suggestion a roll press might be used to pre-crush all the clinker into an intermediate storage which then feeds to two of the existing three ball mills. With pre-crushed clinker the two remaining mills should be able to more than cope with your existing production rate.

Reply


Know the answer to this question? Join the community and register for a free guest account to post a reply.

admin
1156 posts
TimePosted 22/08/2006 10:21:16
admin says

Energy (thermal or electric) Question 3

I am making studies for cement plant and would like to make a following question? Is possible to control the weight in the ball mill (cement or raw mill plus balls) in order to save energy? My view point is if you have any chamber unbalanced in ball mill, the motor drive can be working in a forced way and spent much more energy than the necessary? Is possible to use the balls to correct that balance, because today we have in the cement plant a different weight in each chamber?

Reply

admin
1156 posts
TimePosted 22/08/2006 10:21:16
admin says

Re: Energy (thermal or electric)

The weight of grinding balls in the mill and the power drawn by the mill main motor are directly proportional to one another. Therefore it is possible to reduce the power drawn by the mill by reducing the ball charge. However, this will then result in the output of the mill falling due to less grinding balls being present to grind the clinker and generate surface area. As with all these things there is an optimum ball charge and output which corresponds to the lowest unit energy consumption.

Reply

admin
1156 posts
TimePosted 22/08/2006 10:21:16
admin says

Energy (thermal or electric) Question 4

Do you have an idea of each point decreased in the standard deviation of the kiln feed and how it affects to the specific heat consumption? (for example:40 kj/kg of clinker for every additional 0.1 by which the standard deviation is raised in the usual range).

Reply