COMPOSITION FOR PREPARING STEMMING MATERIAL FOR INSULATING EXPLOSIVE CHARGE Russian patent published in 2024 - IPC C09K8/467 C04B28/02 F42D5/45 F42D1/24 

FIELD: mining.

SUBSTANCE: invention relates to blasting operations in mining industry with closed mining method. Composition for preparation of stemming material for insulation of explosive charge contains, wt.%: aggregate 40-50; cement 40-50; polycarboxylate superplasticiser 0.1-0.3; ash-slag material 2-10; cellulose ether 0.1-0.4; redispersible polymer powder 0.1-0.5; setting accelerating additive 0.3-2.0. Ash-and-slag material is a material or a mixture of materials selected from a group comprising flue ash and slag.

EFFECT: increased efficiency of explosive charge locking and isolation of detonation products in production, ease of use.

6 cl, 3 tbl