Raderwave^TM Fines Screen

RaderwaveTM removes the maximum amount of troublesome fines while saving valuable fiber. 

A technological advance

The Raderwave^TM Fines Screen provides maximum fines removal while saving caluable fiber, even under fluctuating conditions. The unique sinusoidal (or wave-like_ action of the Raderwave's Flexi-DekTM screen mat allows fines to pass through and good fiber to move on. Plugging or binding is effectively eliminated, even with wet, sticky or snow-laden chips.

The result is over 90% fines removal while retaining as much as 90% of the valuable fiber.

A unique operating principle

The Raderwave^TM screen concept was born of experience and extensive research and development. A patent is pending on the uniqueness of its operation. The RaderwaveTM design consists of a series of paralle shafts located beneath a flexible perforated screen deck. When the shafts rotate, a wave-like motion is created on teh screen media. As chips travel across the screen, the bed is accelerated vertically so that pins and chips are suspended, clearing the way for fines to migrate through the performations. Acceptable fiber os continuously carried forward and passed over the end.

A fines screen's efficiency must be measured two ways

Results gathered from on-line mill testing of the RaderwaveTM at full production rates, showed extraordinary levels of fines removal and pin chip retention. Harsh winter conditions had little impact on screening efficiencies.

All mill operation conditions vary and so will screening efficiency. A mill can expect efficiency levels comparable to what is reported in the test data, and far better than what can be achieved by any other method.

A screen that cleans itself keeps your operation running smoothly

The constant flexing action of the Flexi-Dek^TM screen mat helps prevent adhesion of wet or sticky particles. In addition, the alternating wave motion slightly varies the perforation geometry, either accepting or rejecting near-size particles. When combined with the forces of high acceleration, blinding is eliminated. This self cleaning feature is particularly beneficial in harsh climates where screen blinding or plugging has always been a problem.

Designed for ease of installation, reliable operation and low maintenance

• A low horsepower, variable speed drive and motorized jacking system allows wave frequency and screen inclinations to be adjusted "on the run".

• A heavy-duty high-torqu cogged belt drive ensures reliability and eliminates the need for bothersome oil baths.

• The Flexi-Dek^TM is a noncorrosive, high density, high strength material, formulated for maximum flexibility and long wear life.

• Flexi-Dek^TM replacement is easily accomplished in two hours or less, which means very little down time.

• Dust-tight construction provides for a clean work area.

Common mill problems and Jeffrey Rader solutions

Mill is experiencing blinding and plugging of their gyratory screen deck during winter months.

In many cases, a conventional fines screen will become ineffective during the winter when chips are wet and frozen. In extreme conditions, it's not unusual for a mill to bypass a gyratory screen entirely. A RaderWave fines screen will allow the mill to continue screening fines efficiently during these periods.

Mill wants to retain pin and thin chips and feels it is losing valuable fiber with their present fines removal system. 

While some screens do a good job of fines removal, they often operate at the expense of fiber loss. Retaining pulpable fiber can pay big dividends especially when a mill's wood costs are high. A RaderWave™ screen operates with a high degree of fines and grit removal efficiency with excellent good fiber retention.