Quick-setting brucite-phosphate-based cementing material as well as preparation method and application thereof

The invention relates to a quick-setting brucite-phosphate-based cementing material as well as a preparation method and application thereof. Natural brucite minerals are used for completely replacingmagnesium oxide raw material which is prepared at high temperature to prepare a novel brucite-phosphate-based low-carbon cementing material. The invention particularly relates to a formula and a preparation technology of the brucite-phosphate-based low-carbon cementing material. The core content of the invention is a material formula which is composed of brucite, ammonium dihydrogen phosphate andborax. The preparation method of the cementing material comprises the following steps: preparing according to a required ratio, and mixing in a mixer for 10-30 minutes to obtain the product. The cementing material can be used by adding water and stirring, and the recommended water-binder ratio is 0.12-0.20. Compared with the prior art, the phosphate cementing material disclosed by the invention isequivalent in performance,