KREBS® gMAX® Cyclones

gMAX® Hydrocyclone performance

FLSmidth has improved hydrocyclone geometry and materials of construction to give finer and sharper separations, as well as higher throughput, reliability, and product life. This improvement in performance and availability increases user’s productivity.

Key benefits

• Finer, sharper particle separations at high capacities
• Fewer cyclones needed for optimal performance
• Operates at higher feed densities for same separation results
• Operates at low cyclone inlet pressure
• Retrofitted into existing installations to boost throughput

KREBS® Hydrocyclone technology leads the way in separation mining and industrial applications

Optimum cyclone performance relies on minimizing turbulence while maximizing tangential velocity. The gMAX® cyclone focuses on these two important factors, significantly advancing cyclone performance.

To achieve these two design criteria, the gMAX incorporates performance-enhancing improvements to the inlet head, cylinder section, cones, and apex. In fact, the performance level reached by the gMAX was once only achievable using many small-diameter cyclones, at a much higher capital cost.

■ Minerals processing
■ Oil sands
■ Power plants (FGD)
■ Chemicals
■ Automotive
■ Industrial and manufacturing
■ Water treatment

gMAX inlet head

• Contoured ramped inlet pre-classifies feed and reduces turbulence
• Reduced turbulence minimizes coarse solids bypass to overflow
• Less turbulence reduces wear

Inlet head design

The innovative gMAX® inlet design provides finer and sharper particle separation at high capacities.

The outer wall involute design entrance pre-classifies the feed solids prior to entering the main body of the cyclone. The inlet head of the gMAX also includes an improved vortex finder and top cover plate liner design.

These improvements result in reduced misplacement of material to the overflow and dramatically increased wear life. By using premium ceramics in the lower section of the cyclone, overall wear life is increased, greatly increasing the intervals between complete cyclone rebuilds.

inlet head design, layers of paint in different colors were applied to the gMAX inlet head liner (left insert) and to a competitor’s outer wall tangential inlet head liner (right insert). The components were assembled onto cyclones and slurry was pumped through them in FLSmidth Krebs’ cyclone laboratory.

The resulting wear patterns show a dramatic reduction and wear as a result of the improved gMAX geometry.

Cone design

Through the use of computational fluid dynamics (CFD) analysis, the gMAX cyclone design features more sharply angled upper cones, followed by longer, angled lower cones.

This combination maximizes tangential velocity in the upper part of the cyclone. It also provides a long residence time in the critical separation zones in the lower part of the cyclone. The result is a substantially finer separation, with fewer fines in the underflow and less coarse material bypass to overflow.

Service and hydrocyclone test facilities

FLSmidth’s engineers evaluate your potential applications and provide detailed recommendations and performance estimates. If your application requires validation testing, FLSmidth’s hydrocyclone test lab can provide prompt testing at low cost. Test cyclones can also be run at your site.

Optional liner materials available

• BPC rubber
• Neoprene
• Nitrile
• Chlorobutyl
• Alumina
• Nitride bonded silicon carbide ceramic
• Reaction bonded silicon carbide ceramic
• Sintered alpha silicon carbide ceramic

Fabricated/cast/molded unlined cyclone materials
■ 304L/316L SS
■ Duplex 2205
■ CD4MCU
■ Monel
■ Inconel
■ Nickel
■ Hastelloy
■ Other metal alloys
■ Polyurethane*