CA2235526A1 - High pulp density fast setting and high early strength backfill method and material - Google Patents

High pulp density fast setting and high early strength backfill method and material

Info

Publication number
CA2235526A1
CA2235526A1 CA2235526A CA2235526A CA2235526A1 CA 2235526 A1 CA2235526 A1 CA 2235526A1 CA 2235526 A CA2235526 A CA 2235526A CA 2235526 A CA2235526 A CA 2235526A CA 2235526 A1 CA2235526 A1 CA 2235526A1
Authority
CA
Canada
Prior art keywords
backfill
early strength
mining
methods
pulp density
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2235526A
Other languages
French (fr)
Other versions
CA2235526C (en
Inventor
Henghu Sun
Shuqin Li
Weirui Xu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MAG ENGINEERING AND CONSTRUCTERS Ltd
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CA 2235526 priority Critical patent/CA2235526C/en
Publication of CA2235526A1 publication Critical patent/CA2235526A1/en
Application granted granted Critical
Publication of CA2235526C publication Critical patent/CA2235526C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—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
    • C04B28/02—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 containing hydraulic cements other than calcium sulfates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—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
    • C04B28/02—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 containing hydraulic cements other than calcium sulfates
    • C04B28/06—Aluminous cements
    • C04B28/065—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00034—Physico-chemical characteristics of the mixtures
    • C04B2111/00146—Sprayable or pumpable mixtures
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

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. One obvious advantage of the present invention, compared with the traditional backfill methods using Portland cement as binding material, is that one tonne of the novel material obtains the same compressive strength as threes tonnes of Portland cement as binding material. Another important property of the present backfill materials and methods is that the curing time for the backfill body will be decreased from 7 - 28 days to 1 - 3 days, which can significantly decrease the operation cycle time for underground mining and increase efficiency.
Because of the very good early strength and homogeneous backfill body, better working conditions and improved safety in mining operations are achieved. Further, because of the large amount of mine tailing being used as aggregates without classification, the surface pollution in mines is decreased. The new methods disclosed in this invention may be combined with various mining methods to form upward backfill, downward backfill, partial backfill, complete backfill and other types of backfill, to be used in diverse mining conditions.
CA 2235526 1997-04-24 1998-04-22 High pulp density fast setting and high early strength backfill method and material Expired - Lifetime CA2235526C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2235526 CA2235526C (en) 1997-04-24 1998-04-22 High pulp density fast setting and high early strength backfill method and material

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CA2,203,575 1997-04-24
CA2203575 1997-04-24
CA 2235526 CA2235526C (en) 1997-04-24 1998-04-22 High pulp density fast setting and high early strength backfill method and material

Publications (2)

Publication Number Publication Date
CA2235526A1 true CA2235526A1 (en) 1998-10-09
CA2235526C CA2235526C (en) 1999-10-05

Family

ID=25679270

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2235526 Expired - Lifetime CA2235526C (en) 1997-04-24 1998-04-22 High pulp density fast setting and high early strength backfill method and material

Country Status (1)

Country Link
CA (1) CA2235526C (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6428107B1 (en) 2000-11-28 2002-08-06 Inco Limited Heat added to underground cemented fill to obtain both early and long term strength increases
CN111537418A (en) * 2020-04-27 2020-08-14 哈尔滨工业大学 Method for evaluating grouting performance of cement asphalt composite concrete cementing material
CN112593528A (en) * 2020-12-25 2021-04-02 洛阳理工学院 Molybdenum ore tailing sand reinforcing and anti-leakage method and building structure thereof
CN112814732A (en) * 2021-02-20 2021-05-18 中南大学 Preparation of mixed ground paste of barren rock and tailings and pump sending filling device
US11095102B2 (en) 2016-09-06 2021-08-17 Quanta Associates, L.P. Repurposing pipeline for electrical cable
CN114057415A (en) * 2021-12-08 2022-02-18 西安建筑科技大学 Multi-solid waste gel material, multi-solid waste filling material based on gel material, and preparation method and application of multi-solid waste filling material
CN116813276A (en) * 2023-06-30 2023-09-29 金徽矿业股份有限公司 Method for efficiently preparing fast-strength tailing filling paste material

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6428107B1 (en) 2000-11-28 2002-08-06 Inco Limited Heat added to underground cemented fill to obtain both early and long term strength increases
US11095102B2 (en) 2016-09-06 2021-08-17 Quanta Associates, L.P. Repurposing pipeline for electrical cable
US11095101B2 (en) 2016-09-06 2021-08-17 Quanta Associates, L.P. Repurposing pipeline for electrical cable
CN111537418A (en) * 2020-04-27 2020-08-14 哈尔滨工业大学 Method for evaluating grouting performance of cement asphalt composite concrete cementing material
CN112593528A (en) * 2020-12-25 2021-04-02 洛阳理工学院 Molybdenum ore tailing sand reinforcing and anti-leakage method and building structure thereof
CN112593528B (en) * 2020-12-25 2022-05-17 洛阳理工学院 Molybdenum ore tailing sand reinforcing and anti-leakage method and building structure thereof
CN112814732A (en) * 2021-02-20 2021-05-18 中南大学 Preparation of mixed ground paste of barren rock and tailings and pump sending filling device
CN114057415A (en) * 2021-12-08 2022-02-18 西安建筑科技大学 Multi-solid waste gel material, multi-solid waste filling material based on gel material, and preparation method and application of multi-solid waste filling material
CN116813276A (en) * 2023-06-30 2023-09-29 金徽矿业股份有限公司 Method for efficiently preparing fast-strength tailing filling paste material
CN116813276B (en) * 2023-06-30 2024-04-12 金徽矿业股份有限公司 Method for efficiently preparing fast-strength tailing filling paste material

Also Published As

Publication number Publication date
CA2235526C (en) 1999-10-05

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Effective date: 20180423