| 摘要 |
<p>The invention concerns a method for preparing hydraulic binders comprising a mixture of sulphoaluminate clinker or cement and calcium sulphate, and whereof the rehydration predominantly produces primary ettringite, said method comprising a step consisting of injecting the mixture of sulphoaluminate clinker or cement and calcium sulphate in the form of powder into an aeraulic calcination conduit, said conduit being traversed by a turbulent hot air flow, saturated with water vapour, having a temperature of between 250°C and 700°C and a speed of between 8 m/s and 40 m/s.</p> |
