Searching for usages for the Limestone powder. We produce 20 tons daily in the filters of our marble factory?

Question

This Limestone powder is carried by the cooling water used in the production , then isolated in the filters. It is very fine and almost 99% pure .

Answer 1

Can be used for making bricks, also may be good for painting, also tiles

Answer 2

It could be used to make cement.  It might be useful for road work.  It would be useful as a supplement in fertilizers because it raises pH.  It could also be used in animal feed as a source for calcium.