FILLING MIXTURE COMPOSITION Russian patent published in 2020 - IPC E21F15/00 C04B7/153 

FIELD: mining.

SUBSTANCE: invention relates to mining industry and can be used in underground development of mineral deposits with filling of mined space. Invention contains filling mixture composition. Content of filling mixture includes cement, granulated metallurgical slag, crushed stone, sediment, plasticizing additive and water as inert aggregate. Sediment is obtained during reagent purification of mine waste water from sulphate ions by treatment with lime together with alumina cement. Mass ratio of residue to inert aggregate is 1:3–6. Plasticizing additive is taken in amount of 0.5–0.7 wt. % to amount of cement.

EFFECT: lower consumption of cement and inert filler, higher stowing mixture strength.

1 cl, 4 tbl