In the metal industry, a very large portion of the particles that need to be removed are metal and lots of those are magnetizable, which makes the use of magnets for the separation an option. A significant advantage of magnetic separation is that no filter cloth or other consumables are necessary, and if the particles are separated with minimal amounts of fluid, the waste that needs to be disposed of is practically limited to the pollution only.
As with many separation techniques, the principle is simple. Allow the medium to pass a strong magnet, and all magnetizable particles will be attracted by the magnet and are that way removed from the medium. Yet there are two challenges. One is to remove the particles from the magnet, which is not that easy to do automatically. The other is that, as the amount of dirt on the surface of the magnet increases, the effectiveness drops drastically; the magnetic field gets caught in the dirt layer.
The Q-Mag® deals with both these challenges with one, simple, solution. Dirt depositing on the surface is continuously and automatically removed from the surface of the magnet and concentrated in a separate sludge chamber. And since the sludge chamber is automatically emptied, without interrupting the normal operations, the Q-Mag® offers a very effective and reliable tool with a high flexibility.
This is a good example of the wide range of applicability of Q-Mag®. The picture on the left shows how Q-Mag® removes floating 'skum' and foam from an emulsion tank.
After changes in the process a significant amount of the dirt in the emulsion floated to the surface of the settling tank for the emulsion. The Q-Mag®, in combination with a Suparskim® surface skimmer, turned out to be the perfect tool to remove this 'skum'; most of the dirt was very fine metal dust.
Normally particles, and in particular metal particles, will settle to the bottom in a holding tank, and a lot of separation techniques rely on this. But if the metal particles are extremely fine, less than 20µm, that often does not work. Oil and foam easily carry these fine particles to the surface and once at the surface, the surface tension of the medium keeps the particles there. The Q-Mag®, used in combination with a Suparskim® skimmer, will be very effective in the removal of this dirt.
One of the applications the Q-Mag® is used for, is to treat a medium prior to separating oil from it.
In the automotive industry, degreasing baths remove oil and dirt, mainly metal particles, from the car bodies. A large amount of these metall particles are found in the flow into the oil separator and cause problems in separating the oil.Filtration before the oil separator is not possible; the oil will cause problems in the filtration and at the same time the filtration will cause the oil to be emulsified.
In the picture to the left, Q-Mag® is use before the oil separation, to remove metall particles without emulsifying the oil. The result is less problems with dirt in the oil separation and a much more effective separation of he oil.