Abstract: A device for obtaining high-quality mixtures of solids and liquids extending to the colloidal system or to coagulation and employed to treat water or to introduce gases into liquids, wherein the device includes an intermediate tank that has at least one charging aperture at the top, that tapers downward, that the medium flows through in a helical vortex subject to gravity, and that empties into a receiving tank.

Abstract: A device for preparing high-quality mixtures of a solid and a liquid extending to a colloidal system, for treating water or for introducing gases and liquids. The device has a mixture-receiving tank equipped with a motor-powered mixer that has a drive shaft provided with mixing elements. The mixing elements rotate at a peripheral speed ranging from 60 to 500 m/sec during an initial interval of the time taken to process a mixture of a solid and a liquid. Controls are provided that can reduce the peripheral speed of the mixing elements to a minimum in accordance with the viscosity of the mixture of a solid and a liquid. The minimum speed can range from to 20 to 60 m/sec and is maintained constant up to the end of the preparation time. The device can be operated discontinuously or continuously.

Abstract: The invention relates to a process and apparatus for producing highly colloidized water-cement mixtures and to a process of coating structural members therewith.