METHOD FOR PRODUCING LIME SAND MORTAR, SAND LIME BRICK MADE THEREOF AND DEVICE FOR PRODUCING THE LIME SAND MORTAR.

摘要

Method for preparing a mortar of lime-sand by mixing lime, sand, possibly additives and water at elevated temperature and pressure above 200 kPa in a closed reaction vessel, wherein at first sand and water are supplied under mixing, in which water is present in an excess in regard with the amount required in the end product to slake the lime completely, after which lime has been added in an excess in regard with the amount of sand, so that the temperature rises to above 130 DEG C, by the development of heat from slaking the lime and by which also the elevated pressure is obtained by development of steam, so that it is unnecessary to add energie from the outer side. The invention also concerns the brick of lime-sand stone and the apparatus for the preparation of the lime-sand mortar.