KREBS® Products for the COAL INDUSTRY
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COAL INDUSTRY KREBS® Hydrocyclones, millMAX® Pumps, and Technequip™ Valves for Coal Processing

KREBS® Products for the Coal Processing Industry Contents ?? FLSmidth Krebs is a global leader in high efficiency process equipment for coal separation systems. For more than 60 years, Krebs has helped advance the productivity of coal processing operations and provided innovations for greater production, efficiency and reliability. FLSmidth Krebs continues to improve our designs and materials of our equipment using long-lasting urethane and ceramic components. FLSmidth Krebs Hydrocyclones provide you with the separation performance you need using leading technology. FLSmidth Krebs millMAX...

KREBS® millMAXTM pump for Coal Applications Did you know All of our horizontal millMAX™ pumps feature a patented on-line wear clearance adjustment, to minimize wear. The reduction of solids recirculation reduces size degradation and wear. millMAX™ Pumps maintain constant flow and discharge pressure, without increasing speed and/or the chance of motor overload. Benefits: Increased Service Life Reduce Power Consumption More Consistent Hydrocyclone Performance Extended Bearing Life Heavy Media Feed Dilute Media Classifying Cyclone Feed Thickener Underflow/ Slurry Line

Technical - Specifications Title The Krebs millMAX™ pump design includes the following: Title Casing - designed for minimum slurry turbulence and even wear. Includes • Bullets integral wear ring, carrier, and adjustment • Bullets screws for on-line adjustment and elimination of suction side recirculation. millMAX™ Power Frame • Heavy duty cast pedestal • External bearing assembly adjustment • Wide bearing centers • Heavy duty shaft and bearings • Double clamp High Performance Centrifugal Gland Seal • Large expeller diameter generates high suction level sealing capacity Zero leakage while...

High Radial Vanes • Clears large solids • Prevents solids from being crushed • Reduces pressure at the eye of the impeller External Jacking Screws • Four screws for on-line clearance adjustment • Adjusted while the pump is operating • Adjusted six to eight times during the life of the wet end Adjustable Wear Ring • Wear ring takes up clearance at the impeller • Adjusted during operation • Reduces suction side recirculation • Maintain hydraulic performance Wide Clearance • Dramatic reduction in crushing of solids • Increased wear life • Reduce power consumption Narrow Clearance Reduces...

KREBS® millMAX-eTM pump Title for Coal Applications Did you know Reverse taper roller bearings: The millMAX-e™ pump is the most efficient slurry pump in its class. It saves power and saves money; thus, minimizing total cost of ownership. The extremely efficient design often allows for smaller motors to be used. • Bullets millMAX-e • Bullets design incorporates an integrated power frame and bearing assembly, eliminating the need to Wide capacity range adjust the impeller within the casing. The millMAX-e power frames utilize the same bearing and shaft components as the equivalent millMAX...

KREBS® gravelMAXTM pump Title for Coal Applications Did you know Adjustable Wear Ring The gravelMAX Pump is a unique design developed for passing large particles within abrasive slurries. Excellent for Heavy Media Cyclone Feed applications. Krebs millMAX™ pumps, treat the cause of pump wear and loss of efficiency by virtue of improved hydraulic design and not with high-price materials of construction. Allows a higher density slurries to be pumped Reduces suction side recirculation Maintain hydraulic performance millMAX™ Power Frame Heavy duty cast pedestal External bearing assembly...

KREBS® Heavy Media Cyclones The Heavy Media Cyclone used in the coal industry is an extremely efficient coal cleaning device using finely ground (-325 mesh / 44 microns) magnetite and water as the “media”. Krebs Heavy Media Cyclones are designed specifically to • Bullets clean coal. A gravimetric separation takes place due to the buoyancy effect of the media forcing the lighter • Bullets solids to the center of the cyclone where they are transported upward and through the vortex finder. The dense mineral matter spirals downward and through the apex. Krebs Heavy Media Cyclones are usually...

KREBS® Pre-Engineered Tile Lining in Title Heavy Media Cyclones Tile Lined Heavy Media Cyclones: Each ceramic tile is machined in the green state and then fired to become an interlocking, serialized component. Although this process is relatively expensive, the increased wear life that results is one reason why Krebs Heavy Media Cyclones are chosen over others that utilize flat tile. Pre-Engineered tiles can come in two different grades. They are used on FLSmidth inlet heads to maximize service life. After assembly of tile lined sections, all cyclones are thoroughly inspected before...

KREBS® Heavy Media Cyclones KREBS Heavy Media Cyclones - Typical Operating Parameters (U.S. Units) Krebs Model Designation Feed Particle Maximum Size Dry Feed Capacity* (stph) Pulp Flowrate Range (gpm) * Based on a 4:1 media-to-coal ratio * These capacities represent maximums for units fitted with the largest inlet and vortex finder KREBS Heavy Media Cyclones - Typical Operating Parameters (Metric Units) Krebs Model Designation Feed Particle Maximum Size Dry Feed Capacity* (mtph) Pulp Flowrate Range (m3/h) Head Equivalent (meters) * Based on a 4:1 media-to-coal ratio * These capacities...

KREBS gMAX® Coal Classifying Cyclones The Krebs gMAX is our newest generation of cyclone, re-engineered from apex to vortex finder. The Krebs gMAX cyclone has the capability to produce finer and sharper separations using high-capacity designs. • Minimized coarse solids misplacement to overflow The Krebs gMAX inlet has been improved upon over the Krebs involute feed inlet that had been the stateof-the-art for over 40 years. The outer wall involute entrance design pre-classifies the feed solids prior to entering the main body of the cyclone. The gMAX also includes an improved vortex finder...