| abstract |
Continuous process for manufacturing set cell cement, comprising the steps of: (i) mixing a cementitious material, water, a foaming agent and optionally additives in a primary mixer under high shear mixing conditions, the peripheral velocity being at least 400 m / min, in a free-flowing liquid sludge with a settlement of at least 100 mm; subsequently (ii) injecting air into a secondary mixer under controlled shear conditions in the liquid sludge of step (i) and distributing air through the liquid sludge to form a cellular liquid sludge; subsequently (iii) molding said cellular liquid sludge from step (ii); and finally (iii) allow said cellular liquid sludge to set. |