METHOD FOR PRODUCING A PACKING STRUCTURE WITH CONTROL OVER HYDROTHERMAL SYNTHESIS PARAMETERS

摘要

The invention relates to a method for producing a packing structure, characterised in that it includes the following steps: a) a step in which the temperature of an initial mixture of quicklime and silica is raised to a temperature T1 of between 150 and 300°C over a period of less than 10 hours; b) a step in which hydrothermal synthesis is performed using the mixture of quicklime and silica produced in step (a) at a temperature T1 of between 150 and 300°C and at a pressure P1 of between 5.105 Pa and 25.105 Pa over a period t1 of between 10 and 70 hours; c) a step in which the mixture produced in step (b) is cooled from temperature T1 to ambient temperature over a period of between 1 and 48 hours at a cooling rate ?TR1 of between 3 and 200°C / hour; and d) a step in which the mixture produced in step (c) is dried.