G-Vault urethane interstage screen

Derrick's urethane screen

The Derrick G-Vault Urethane Interstage Screen addresses operational deficiencies.

When pursuing innovation, the ebb and flow often leads to frustration. The pursuit of perfection, born from passion, transforms marble stone into statues. Within the four walls of Derrick Corporation, the latter of those two statements rings true.

Since the development of the urethane screen surface in 1984, Derrick has set its sights on becoming the world leader in urethane screen surface technology. 

Over the past 35 years, Derrick’s product development team has perfected a vast array of designs, with openings ranging from 6mm to 38mm. Each of these products boasts superior open area and cut points compared with existing alternatives.

As Derrick Corporation enters its 70th year of innovation, it continues to raise the standards of solution-based offerings as related to fine screening technology. 

The Derrick team understands that with added pressure from management boards and investment teams, a gold producer’s responsibility to achieve production goals as efficiently as possible is a ubiquitous task. 

With the third generation of ownership at the helm, Derrick has made it a top priority to address these administrative objectives and many other operational goals. 

Enter: Trilogy screens, Derrick’s latest innovation.

With the full potential of Derrick’s thermoset urethane screens approaching its zenith, the jump to thermoplastics was the next logical step. 

However, as jumps are often synonymous with ease, this particular transition was limited by process capabilities. 

If Trilogy, Derrick’s new thermoplastic screen surface, was to replace its high-performance predecessor, the required fine openings and high open area for this next step could only be achieved by making it small. 

But small and mining are not classically sympatico. 

This obstacle laid the foundation for possibly the most thought-provoking utilisation of resources in company history. 

Ultimately, the development process led to the most versatile range of screen applications ever seen by the industry.

Rather than create a full-size screen panel, Derrick’s research and development team took small sections of the new screen and mounted them onto a rigid, injectable support structure that could be joined easily to create a truly modular, custom-capable screen surface. 

Thus, size and shape would no longer limit implementation of a screening solution.

During the first iteration of this solution, the newly designed Derrick G-Vault Urethane Interstage Screen was deployed to address reported operational deficiencies in interstage gold processing. 

These deficiencies were commonplace over the 25-year tenure of wedge-wire screen operation. 

With the immediate success of Derrick’s urethane interstage screens in gold processing, operators began enquiring about the possibility of Derrick offering a complete unit, rather than only a bolt-in interstage screen replacement.

Predicated on the success of Derrick’s pyramid screens, which are primarily used in oilfield applications, the development team decided to move forward with Trilogy screen technology. 

Building on the urethane template, the team created its first urethane interstage screen for gold processing. 

The result is a screen that increases fluid-handling capacity where high wear is common. 

These revolutionary screens offer all the benefits of urethane screens while increasing open area percentage. 

“This urethane interstage screen named G-Vault features non-blinding polyurethane screen surface as opposed to wedge wire,” Derrick new product application specialist Patrick Stasio explains.

The G-Vault is a turnkey solution for operations. 

For a brownfield, no structural change to the drop-in replacement adaptability is required. 

Future and existing operations will also benefit from the modular screen components, which will eliminate replacement of entire wedge-wire units.

The urethane interstage screen offers easily replaced screen panels, elimination of pegging or blinding, uninterrupted flow and fewer logistics problems. 

All of these features result in clear operational benefits. 

In addition to these benefits, the G-Vault’s easy bolt-in replacement gives operators the opportunity to easily replace screens on site, eliminating the need to ship and store a plethora of wedge-wire screens. 

And unlike maintaining a stock of complete wedge-wire screens, all G-Vault modular screen components can be stored in a designated, low-profile location that is readily accessible to operators.

Under the Derrick umbrella, replaceable components are stored in country.  

Alternatively, Stasio quips, “In a worse-case scenario, I can get a box of these screens from our manufacturing facility in Buffalo, New York to Australia in seven days, compared with someone who has to order a new wedge-wire screen and wait up to a month for delivery.

“We always try to help companies the best way possible. We give
them the best, most efficient and long-lasting piece of equipment because we value our relationships with customers.”  


This article was published in the June edition of Australian Mining

To keep up to date with Australian Mining, subscribe to our free email newsletters delivered straight to your inbox. Click here.