| 摘要 |
<p>Preparing hydraulic binders comprising a mixture of sulfoaluminate clinker or cement and calcium sulfate and whose rehydration predominantly produces primary ettringite, comprises: injecting the mixture of sulfoaluminate clinker or cement in the form of pulverulent powder into an aeraulic calcination conduit; and chemically interacting the components of the mixture under action of a thermo-dynamic shock by circulating a flow of turbulent hot air saturated with water vapor inside the conduit at a temperature of 250-700[deg] C and a speed of 8-40 m/s. Preparing hydraulic binders comprising a mixture of sulfoaluminate clinker or cement and calcium sulfate, and whose rehydration predominantly produces primary ettringite, comprises: injecting the mixture of sulfoaluminate clinker or cement in the form of pulverulent powder into an aeraulic calcination conduit, where the sulfoaluminate clinker or cement has a proportion of 20-90% w/w mixture, the calcium sulfate has a proportion of 20-75% w/w mixture and the other component has a proportion of 0-20% w/w mixture; and chemically interacting the components of the mixture under action of a thermo-dynamic shock by circulating a flow of turbulent hot air saturated with water vapor inside the conduit at a temperature of 250-700[deg] C and a speed of 8-40 m/s. An independent claim is included for an installation for performing the method comprising the aeraulic calcination conduit (5), and means (4) for injecting the mixture into the conduit.</p> |
