wherein the mixing is effected both by the action of a fluid and by directly-acting driven mechanical means, e.g. stirring means

Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions > wherein the mixing is effected both by the action of a fluid and by directly-acting driven mechanical means, e.g. stirring means

Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions (controlling the mixing apparatus and supplying the ingredients B28C7/00 ) > wherein the mixing is effected both by the action of a fluid and by directly-acting driven mechanical means, e.g. stirring means