I can give you a name of a manufacturer.
If you contact Hoffmann they will give you their answer just don't forget that HOFFMANN doesn't use the filter system they are just building it.

Moderators Note
We have removed your statement pertaining to kishor's location and country. The only person that can divulge that information here is kishor himself.
We also presume you are referring to HOFFMANN Maschinen- und Apparatebau GmbH in Lengede, Germany.
www.hoffmann-filter.de/index.htm
Thank you.

Hello Kishor,

To determine the correct filter media for your application some data required is;

Tank capacity
Filter unit type ( vacuum, gravity, press) model number and manufacturer.
Filter unit flow capacity
Flow rates of mill
Lubricant type – synthetic, semi synthetic, soluble oil.
Filter bed width.
System design – 2 tanks roughing and finishing mill or 1 combined tank

A good supplier would also have some data from experience with the same type of system.

I am available to communicate in regards to selecting the correct media and supply.

Lawrie White
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Dear Lawrie,

Clean Tank Capacity - 4000 Liters
filter Type - Vacuum filter
Flow Capacity - 3000 l/min
lubricant - Synthetic
Filter Bed - 1790 mm
System Design - 2 separate Tanks (1 for roughing and 1 for finishing)

Thanks Kishor,
Just to clarify, Is the Clean tank 4000 litres or 40,000 litres?
Seeing you have 2 separate tanks 1 for Finishing mill and 1 for roughing mill I would recommend a different grade for each. Also when using Synthetics, the grade has to be finer because the fines / scale generated are smaller in size compared to a soluble oil or semi synthetic emulsion.
Your setup seems fairly typical of what I see, so I can recommend some proven combinations.
Attention is spread between effectively removing as much scale as possible and keeping the cost - usage of filter media at a minimum. We are able to produce filter media to our own specification, so we can do the extra fine tuning to get the best results. Usually some adjustment of filter pressures and advance set points is required to get the best combination.
It’s better to get continuos removal of scale from the system than having to dig it out during a shutdown.
Also another off shoot to this is the methods that can be used to reduce the amount of scale produced in the first place by the use of different chemistries in the mill emulsion to obtain a better reducing atmosphere in and around the mill.

Contact me directly if you want to talk about a trial of filter media for your mill.

The first thing you do is take different samples with different filter papers to determine the total weight of copper stopped by each filter paper. Then, with this information, you prepare a graph showing the diameters of the copper fines in the emulsion. This is the method you use to select the best filter paper for your system. The other parameters you have are over time and are the quantity of copper fines produced per tonne of rod and the change in the quality of your copper rod surface. If you want to actually measure the copper fine diameters there are specific instruments (Malvern Instruments Ltd at www.malvern.co.uk/home/index.htm ).

Papers: www.vliesstoffe-dierdorf.de/engl/marktse...filtration/index.htm