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Gregg E. Johnson, Cole-Parmer, Barrington, IL, USA.
|With Masterflex® peristaltic pumps, a well-balanced range of capabilities and flexibility combines with optimal abrasive and chemical resistance. These pumping systems provide high reliability and long-term operation in Hydromet, tailings management, reagent dosing and other demanding mining operations|
Mine operators and processors must stay highly active in improving the performance and efficiencies of key systems and processes. The success of many of these systems and processes relies heavily on the optimization of fluid handling and flow control. Masterflex® bring innovative peristaltic pump technologies that bring performance efficiencies to extraction processes in hydrometallurgical plants, tailings management, reagent dosing, and other mining operations involving the transfer of highly abrasive, high-solids sludges and slurries.
Pump failures in mining and mining related service can cause unnecessary and costly downtime and maintenance. However, the inherent design of Masterflex® and Abaque® peristaltic pumps eliminates the potential for many of the problems associated with other pump designs because the material being pumped never actually touches the pump, but rather is occluded, or squeezed, through elastomer hose or tubing. This squeezing action of the flexible tubing generates a powerful vacuum that moves high-solids sludges and slurries without clogging. Recurring failures associated with other pump designs, which can cause significant maintenance, downtime and cleanup costs, are a nonissue with Masterflex® peristaltic pumps because there are no mechanical parts in the fluid stream.
Hydrometallurgical plants employing extraction processes such as the cyanide leach process in gold extraction and the sulphuric acid leach process in copper extraction, require pumping systems that consistently maintain production uptime. These operations continuously handle abrasive slurries and highly aggressive reagents, and this creates huge demands on pumping systems, leading to premature pump wear with many other pump types. Cyanides, acids, and other process reagents are often highly corrosive and can pose havoc to most pump designs, which typically have numerous points of failure. But with Masterflex and Abaque pumps, the fluid remains inside the chemically-resistive pump tubing. And, since no other parts of the pump contact the solution, only the tubing ever needs to be cleaned or changed, which is a very quick and simple procedure. In Hydromet processes, the wetted materials of the pump must remain inert during the process for efficient recovery of the desired metal(s) without interference. The hose tubing is the only wetted part, and Masterflex peristaltic pumps and hose and tubing formulations are compatible with a wide range of chemicals, solvents, flocculants and other media used in hydrometallurgy.
|With Masterflex peristaltic pumps, a well-balanced range of capabilities and flexibility combines with optimal abrasive and chemical resistance. These pumping systems provide high reliability and long-term operation in Hydromet, tailings management, reagent dosing and other demanding mining operations|
Mining slurries typically have very high undissolved solids content with high specific gravities. They also are often highly abrasive. Masterflex peristaltic pump systems are virtually impervious to highly abrasive and corrosive fluids. The pump’s hosing or tubing is its only wear component, and the pump design provides a straight flow path with no dead flow areas for slurry to settle and agglomerate, harden, or negatively impact the process. With the peristaltic pump design, the tubing hose essentially serves as the pump, so there are no abrasive wear on gears, lobes, or rotors due to process fluids. Plus, there are no seals, no need for flush plans, and no check valves to leak or hang open.
With peristaltic pumps, a well-balanced range of capacities and flexibility for handling high-solids flows is combined with optimal abrasive and chemical resistance to bring reliability and long-term operation in these and other demanding operations:
|Abaque hose pumps can effectively transfer abrasive slurries and semisolid products such as sludge, lime and carbon slurries.|
|Masterflex pumps are available in a wide range of performance ranges up to 540 gph, and operating pressures to 100 psig|