Patent ID: 8182757

Claim:
An apparatus for producing a calcium carbonate product from calcium hydroxide, comprising small calcium carbonate particles, which apparatus comprises at least one precipitation reactor into which the calcium hydroxide or other corresponding Ca ++ ion source is disintegrated or sprayed as fine drops and/or particles and inside of which the calcium hydroxide is brought into contact with gas which contains carbon dioxide and apparatuses for feeding the calcium hydroxide or other corresponding Ca ++ ion source into the precipitation reactor, and apparatuses for removing the calcium carbonate product from the precipitation reactor, wherein the apparatus additionally comprises a disintegration and spraying apparatus, operating on the principle of a pin mill, for disintegrating the calcium hydroxide as small drops and/or particles into the precipitation reactor, wherein the disintegration and spraying apparatus is located inside the precipitation reactor, and cooling apparatuses for maintaining a lowered temperature in the precipitation reactor.