Blending Oils and Additives

What is your reason to add additives to the oil ? Is it new or recycling oil? What kind of additives and oil is used? If your supplier of the additives doesn't have the right procedure you will have a reliability problem with your machine (?).

Rene Steffens

I do not kwow what mixer you use.the best is to mix the oil with an Colwes turbine rotating at about 25m/s located at the centrum and close to the bottom of the drum. introduction of the additives slowly in the middle of the vortex.Do not use square drum so the oil will not be mixed in the angles.

To get good mixing avoid formation of a vortex. Therefore, placing the mixer at an angle gives better mixing.

...also, placing the mixer off-centre will give better mixing, as there is now a wider range of possible transit times for a given packet of fluid before it passes the agitator again. Putting a baffle of some sort into the drum will also help.

Placing the mixer off center causes the wall of the drum to act as a baffle and improves mixing. Conventional practice in angle mount was to orient the impeller (assume propeller?) in the upper right hand quadrant looking from the top.

So the impeller needs to be in the upper top side rather than down at the bottom?

No. Looking from the top of the drum (plan view) draw the vertical and horizontal centerlines accross the circular cross section. Place the impeller in the upper right hand quadrant. Prop should be reasonably close to the bottom to prevent settling/assure mixing.

That makes more sense. Thanks everybody.