SCHNEIDER FILTRATION AND COOLANT SYSTEMS:

• Eliminate emulsion dumping
• Provide ultra-low surface and emulsion iron
• Remove tramp oil
• Maintain consistent coolant
• Keep tanks sludge-free

FILTRATION
The heart of the system is the Schneider Filter. This is a large area pressure filter operating at a flow rate of 90-125 l/min/m². Flat bed or vacuum filters normally are sized for a flow rate of 480-650 l/min/m². The lower flow rate and high pressures available with the Schneider Filter produces a very good filtrate quality. The oil emulsion droplets are pressure forced through the filter media and elongate as they pass through, stripping off attached steel fines. No loss of neat oil concentration at this fine filtration level has been reported.

The degradation of the rolling oil emulsion is proportional to the increase in the oil droplet size. The oil droplet size increase is proportional to the build-up of steel fines within the emulsion which directly contributes to the growth in oil droplet size. Rolling lubricity and coefficient of rolling friction is effected directly by this growth. By fine filtration, we can maintain the oil droplet size, thus keeping the rolling conditions consistent and eliminating oil dumps and changes.

TRAMP OIL REMOVAL
Modern emulsions require increased settling or residence time in tanks to separate the free tramp oils to the surface of the emulsion. Tanks can be made smaller and more efficient by passing a side-stream through a Schneider Tramp Oil Coalescer System. This unit is very efficient at removing tramp oil and also coalesces the oil, reducing the waste stream associated with traditional skimmers and removal systems. The flow rate through the coalescer is normally sized to process the total system capacity four to six times every day. The suction of the transfer pumps are located at the surface of the tank liquid with a floating unit.

NO-SLUDGE TANKS
Traditional rectangular tanks collect sludge deposits at the bottom of the tank. This is eliminated with the Schneider design. Pyramid, or cone bases to the tanks are used to direct all heavy deposits into the filter pump suctions which are located at the apex of each cone.

VARIABLE FREQUENCY DRIVES
MILL SUPPLY PUMPS
Through an automatic closed loop feedback control from pressure, the pumps are able to very closely regulate pressure. The accuracy is much better than with valving. The advantages are:

• Constant nozzle pressure
• Elimination of valve maintenance
• Energy savings

MAGNETIC SEPARATORS
Can be used to reduce the load to the Schneider Filter, but are not necessary to improve the filtrate quality.