COMPOSITION OF THE MODIFIED FILLING MATERIAL Russian patent published in 2023 - IPC E21F15/00 

FIELD: mining.

SUBSTANCE: invention relates to the mining industry and can be used in underground mining of mineral deposits with backfilling of goaf. The modified filling material contains technical sulfur and inert aggregates - the solid phase of the tail pulp of the hydrometallurgical processing of ores and the sand-gravel mixture, in the following ratio, wt.%: the solid phase of the tail pulp of the hydrometallurgical processing of ores 50.0-61.5; sand and gravel mixture 8.1-10.6; technical sulfur 30.4-39.4.

EFFECT: increase in strength and reduction of hardening time; decrease in the consumption of natural inert filler.

1 cl, 1 ex, 1 tbl