Patent · US Expired

Backfilling in mines

US5141365A · kind A · utility

16Cited by
7References
14Claims
0Family size

Assignee

Inventor

Key dates

Filing dateMar 1, 1991
Grant dateAug 25, 1992
Priority date
Expiry dateMar 1, 2011

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY02W30/91
  • WIPO fieldMaterials, metallurgy
  • WIPO sectorChemistry

Abstract

A void in a mine is backfilled by a backfill slurry comprising water, an inert filler, e.g. mine tailings, and a binder, e.g. cement, lime or slag, to which a gelling agent, e.g. sodium silicate, is added just before placement.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.