Paste Technology / What Is Paste?
In the past decade, paste technology has progressed from a research-based concept to a widely accepted and extensively practiced engineering solution for managing mineral waste.
It is now generally recognized that significant engineering, scheduling, production and environmental benefits are gained from the use of paste technology in underground backfill and surface disposal applications.
Paste is a non-segregating engineered mixture of solids and water.
More specifically, paste:
- Is an engineered mixture of solids and water
- Possesses a yield stress
- Produces a measurable slump (as per the American Society for Testing and Materials ((ASTM test # C143))
- Has a maximum slump of 250mm (10 inches)
- Can be moved through a pipeline by gravity, positive displacement pump, or centrifugal pump
- Has no critical flow velocity
- Consistently demonstrates the ability to have minimal material segregation and minimal water bleed at any stage of transport or placement
