Backfilling in mines
US5141365A · kind A · utility
16Cited by
7References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 1, 1991 |
| Grant date | Aug 25, 1992 |
| Priority date | — |
| Expiry date | Mar 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.