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1. (AU1998070223) High pulp density, fast setting and high early strength backfill method and material

Office : Australia
Application Number: 70223/98 Application Date: 22.04.1998
Publication Number: 1998070223 Publication Date: 14.01.1999
Publication Kind : A
Prior PCT appl.: Application Number:CA1998000378 ; Publication Number: Click to see the data
IPC:
C04B 28/06
C04B 28/02
C04B 40/00
C CHEMISTRY; METALLURGY
04
CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
28
Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
02
containing hydraulic cements other than calcium sulfates
06
Aluminous cements
C CHEMISTRY; METALLURGY
04
CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
28
Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
02
containing hydraulic cements other than calcium sulfates
C CHEMISTRY; METALLURGY
04
CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
40
Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
CPC:
C04B 28/065
C04B 28/02
C04B 40/0028
C04B 2111/00146
C04B 2111/00724
Y02W 30/91
Y02W 30/93
Applicants: Sungeric International Inc.
Inventors:
Agents: FPA Patent Attorneys Pty Ltd
Priority Data: 2203575 24.04.1997 CA
60041487 24.04.1997 US
Title: (EN) High pulp density, fast setting and high early strength backfill method and material
Abstract:
(EN) 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.
Also published as:
EP0988260CN1252781CA2235526ID020.223WO/1998/049115