Fluorgypsum-based high-water and super high-water filling material and preparation method thereof

Abstract

The invention provides a fluorgypsum-based high-water and super high-water filling material and a preparation method thereof. The material is prepared from a component A and a component B, wherein the component A is prepared from, by weight percentage, aluminoferic cement clinker, calcium bentonite, an accelerator, a suspending agent and a thickening agent; the component B is prepared from, by weight percentage, fluorgypsum, calcium oxide, metakaolin, a compound early strength agent, the suspending agent and calcium carbonate. The material has the advantages of achieving early strength and rapid hardening and being high in water-cement ratio, adjustable in initial setting time and less in material consumption, after the component A and the component B are mixed, no bleeding happens, and the initial setting time is 3-25 minutes and can be adjusted according to field needs.

Description

technical field [0001] The invention relates to a fluorine gypsum-based high-water / ultra-high-water filling material, which is mainly used for retaining entry along the goaf of mines, filling of gobs, filling and mining, backfilling and support of the walls of wells, and the like. Background technique [0002] At present, fly ash-based filling materials and concrete materials are mainly used for mine gobside entry retention and gob filling. Although the price of fly ash-based filling materials is low, the material performance is poor, the setting time is slow, and the strength is low; concrete materials Although the strength is high, more materials are required per unit volume, and the production system is more complicated. At the same time, the use of this material requires a lot of manpower and material resources. Therefore, it is particularly important to develop a high-water material suitable for gobside retaining and goblin filling in mines. [0003] Fluorogypsum is a ...

AI Technical Summary

Problems solved by technology

[0002] At present, fly ash-based filling materials and concrete materials are mainly used for mine gobside entry retention and gob filling. Although the price of fly ash-based filling materials is low, the material performance is poor, the setting time is slow, and the strength is low; concrete materials Although the strength is high, more materials are required per unit volume, and the production system is more complicated. At the same time, the use of this material requires a lot of manpower and material resources.