Backfill Cost Reduction: Designing Around Hydraulic Capability

July 30, 2020Tech Topics

The use of cemented paste backfill in underground mining is commonplace as a method for tailings disposal, rockmass confinement or minimising convergence between the hanging wall and foot wall of the operation. The application of a cemented paste fill can also enable greater extraction ratios within certain deposits, as ore that would ordinarily be left … Read More

Selecting Slurry Pumps Based on Operating Frequency Map

July 2, 2020Tech Topics

Many slurry pumping systems in the mining industry operate over a wide range of duties as processing requirements and material properties change. The pump selection must be able to achieve the maximum duty point, and often this is the only duty used for selection, which includes the application of industry standard guideline operating limits, such … Read More

Tailings Pump Station Layout – Planning for the Future

June 18, 2020Tech Topics

Paterson & Cooke is currently engaged on several tailings pumping system upgrade projects. These are typically associated with increased throughput requirements (associated with a plant expansion), increased pumping head requirement, (associated with increased pumping distance to a new tailings storage facility, or increased elevation on an existing TSF). A common feature on many of these … Read More

The Impact of Ore Body Variability on Mine Waste Tailings Disposal Systems

May 6, 2020Tech Topics

Ore body variability can have a significant effect on the various elements of mine waste tailings disposal systems, including: thickening systems, tailings pump and pipeline systems, and tailings storage facilities. Ore bodies that are exploited using open-pit mining methods often consist of softer, weathered, clay-containing material near to the surface (oxides), transitioning to harder rock … Read More

Paste Backfilling on a Budget

April 23, 2020Tech Topics

Low Capital Investment Options to Support Mining Activities Paste backfill has become known as a superior ground support tool and mine waste disposal method, albeit usually one with a higher initial price tag when compared to hydraulic or rock fill. The capital costs associated with the implementation of a permanent paste backfill plant can put … Read More

Data Uncertainty Related To Backfilling Operations

April 14, 2020Tech Topics

A recurring problem in mining projects is the collection and interpretation of data which is applicable to backfilling operations in general. The basis for design is therefore compromised by external factors, so the design expectations must be tempered to give confidence to Mine Management that the design is robust. From an underground geotechnical engineering perspective, … Read More

Arctic Climate Pipeline Design Considerations

April 1, 2020Tech Topics

Over the years there has been an increasing trend for resource companies to develop mining projects in cold regions and areas of permafrost. The arctic presents unique engineering challenges. Many of the sites are in remote areas where road access is difficult. These regions bring about challenges related to labour, equipment, logistics and costs. This … Read More

Optimising Operating Ranges to Control Backfill Variability

March 11, 2020Tech Topics

A paste backfill system seldom operates at a fixed operating point and the system always needs to accommodate considerable variability in materials depending on what ore is being mined and the performance of the process plant. It is therefore important to design a flexible backfill system that accounts for varying backfill rheology while ensuring that … Read More

Optimise Your Backfill Through Particle Size Manipulation

January 14, 2020Tech Topics

The global trend of decreasing metalliferous ore grades and increasingly complex mineralogies is leading to finer grind sizes to achieve the necessary liberation for ore beneficiation. The impact of this is expressed throughout the ore processing cycle, including mine backfill; by leaving lower fractions of coarse material suitable for hydraulic fill and, in particular, influencing … Read More

One Conference, Two Papers and Future Research

December 4, 2019Tech Topics

The 19th International Conference on Transport & Sedimentation of Solid Particles (T&S) was held in Cape Town in September 2019 and it was a great success. It’s the first time the conference has been hosted in Africa since its inception in 1971 and Paterson & Cooke (P&C) co-hosted the event together with Wroclaw University of … Read More