EP 0988260 A1 20000329 - HIGH PULP DENSITY, FAST SETTING AND HIGH EARLY STRENGTH BACKFILL METHOD AND MATERIAL
Title (en)
HIGH PULP DENSITY, FAST SETTING AND HIGH EARLY STRENGTH BACKFILL METHOD AND MATERIAL
Title (de)
FESTSTOFFREICHES SCHNELLABBINDENDES UND FRÜH HOCHFESTES AUFFÜLLUNGSVERFAHREN UND MATERIAL
Title (fr)
MATIERE REMBLAI A DENSITE DE PULPE ELEVEE, PRISE RAPIDE ET RESISTANCE INITIALE ELEVEE ET PROCEDE CONNEXE
Publication
Application
Priority
- CA 9800378 W 19980422
- CA 2203575 A 19970424
- US 4148797 P 19970424
Abstract (en)
[origin: WO9849115A1] This invention discloses a high pulp density, fast setting and high early strength backfill method for underground mining, in which novel binding materials, with high early strength properties, are used as the binding reagent, where mine tailings, natural sands, ground sands and industrial waste materials are used as aggregate. The binding material, aggregate and water are mixed together uniformly to produce a high pulp density backfill slurry with 65-85 % pulp densities. The backfill slurry produced is transported to underground mining stopes through a pipeline by gravity or pumping. Once the backfill slurry fills the stope, it quickly solidifies within several hours into a solid backfill body with high early strength. Because of the large amount of mine tailing being used as aggregates without classification, the surface pollution in mines is decreased.
IPC 1-7
IPC 8 full level
C04B 28/02 (2006.01); C04B 28/06 (2006.01); C04B 40/00 (2006.01)
CPC (source: EP)
C04B 28/02 (2013.01); C04B 28/065 (2013.01); C04B 40/0028 (2013.01); C04B 2111/00146 (2013.01); C04B 2111/00724 (2013.01); Y02W 30/91 (2015.05)
Citation (search report)
See references of WO 9849115A1
Designated contracting state (EPC)
ES FR IT PT
DOCDB simple family (publication)
WO 9849115 A1 19981105; AU 7022398 A 19981124; CN 1252781 A 20000510; EP 0988260 A1 20000329
DOCDB simple family (application)
CA 9800378 W 19980422; AU 7022398 A 19980422; CN 98804403 A 19980422; EP 98916727 A 19980422