Process for producing geopolymer by using high-silicon tailings and use method of geopolymer

The invention discloses a process for producing a geopolymer by using high-silicon tailings and a use method thereof, and the adopted production process comprises the following steps: carrying out high-temperature magnetizing roasting on high-silicon iron ore, then carrying out ore grinding and magnetic separation, and then carrying out drying and dry ore grinding on the obtained high-silicon tailings to obtain a powdery geopolymer; after the geopolymer and the blast furnace slag or the fly ash are prepared and mixed according to a certain proportion, the obtained mixed material can be used as a fertilizer for normal soil; after the geopolymer is subjected to acid leaching by adopting sulfuric acid with a certain concentration at a certain temperature, the obtained acidified geopolymer can be used as a modifier of saline-alkali soil; after the geopolymer and the green ecological binder are prepared and mixed according to a certain proportion, the obtained mixed material can be used as a fertilizer in gobi far