Conference Proceedings
MASSMIN 2000
Conference Proceedings
MASSMIN 2000
The Potential Use of Foam Technology in Underground Backfilling and Surface Tailings Disposal
Surface tailings are finely ground waste materials produced in all mines after the mineral or metal has been removed from the metallurgical process. Current methods for disposal of tailings involve constructing dams, dumping into existing waterways, and depositing as backfill underground. Each method has its drawbacks in terms of cost, level of complexity, safety and environmental concerns. Backfilling is the process whereby waste material (generally metallurgical tailings, prepared aggregates or a combination) is placed from the surface back underground into open mine workings via conveyor belts, hydraulic or pneumatic pipes or gravity. In the backfill process common difficulties are expensive placement costs, equipment wear and the ability to meet early and long-term strength requirements. Traditional tailings transportation in pipes involves the use of water as the transport medium. Foam technology involves the introduction of micro-air bubbles that replace the water as the main transport medium. This air can be removed after placement if necessary, by the addition of a defoaming agent. This could produce an under-saturated stable cake. Foam technology has the potential to revolutionise surface tailings disposal and backfilling by providing a less expensive and environmentally safe alternative to those just described.
Contributor(s):
A J S Spearing, D Millette, F Gay
-
The Potential Use of Foam Technology in Underground Backfilling and Surface Tailings DisposalPDFThis product is exclusive to Digital library subscription
-
The Potential Use of Foam Technology in Underground Backfilling and Surface Tailings DisposalPDFNormal price $22.00Member price from $0.00
Fees above are GST inclusive
PD Hours
Approved activity
- Published: 2000
- PDF Size: 0.074 Mb.
- Unique ID: P200007021