Tag Archives: Vortex Layer Device

The Vortex Layer Device (magnetic mill)

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The new GlobeCore Vortex Layer machine currently has quite a large amount of uses. The casing 1 is made of nonmagnetic material and has the form of a hollow cylinder. It is placed into the work-coil 2, which creates a rotating electromagnetic field.  The work-coil is placed into the metallic jacket 3, to protect personnel from the electromagnetic field exposure.  It also performs a function of a container for liquid cooling. The cylinder sleeve 4, locates inside the casing and serves as the device process chamber.  There are ferromagnetic particles 5, inside of the sleeve.

AVS

Fig. 1. VLD schematic diagram

Both cyclical and continuous processes can take place inside the VLD.  In this case the required reagents are added on one side of the process chamber and the reaction products are discharged on the other side.  The ferromagnetic particles remain in the reaction zone due to the velocity layer effect (ref. to fig. 2).

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Fig. 2. The velocity layer photography (the frame rate is 1000 fps)

The advantages of the VLD include a lack of dynamic seals as well as complete sealing of the reaction zone.

The ferromagnetic particles perform complex motions under the action of forces occurring in a rotating electromagnetic field.  The progressive motions are made with frequent and abrupt changes in speed as well as the rotational motion with a variable angular velocity.  The specific character of the motion depends on many factors.   They include the rotation velocity, the magnetic field strength, the mass, the form, the dimensions and magnetic properties of the particles as well as the medium’s viscosity.

The velocity layer creation makes it possible to use the VLD in order to intensify physical and chemical processes.  Such intensification is achieved by rapid mixing and dispersion of the treated components, as well as acoustic and electromagnetic processing, high local pressure, and electrolysis.

Fig. 3. The GlobeCore Vortex Layer device AVS-100

The latest research indicates that the VLD can be effectively used for:

  • obtaining multi-component suspensions and emulsions;
  • removal of proteins from yeast cells;
  • increasing the microbiological stability of food products;
  • improving the quality of semi-finished and finished products made from fish and meat;
  • intensification of extraction processes;
  • improving the physicochemical properties of rubber with synchronous reducing the time of vulcanization; and
  • improving paper quality.

The VLD units are characterized by operational reliability and ease of use.  They can also be installed without the need for special foundations.  It is possible to get the VDL units to perform in many different configurations including in series and in parallel operations.

Automatic Loading of the Grinding particles in the Working Chamber of the Vortex Layer Device

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Electromagnetic devices with a vortex layer of ferromagnetic particles were first proposed in the 1960s.  In these devices, complex interactions take place between ferromagnetic particles, fluids and materials that are being processed.  This speeds up the process of mixing and grinding.  Moreover, the vortex layer devices can successfully be used as reactors.

GlobeCore manufactures the AVS-100 and AVS-150 type vortex layer devices.  These units are highly versatile pieces of equipment that can be used for the following:

  • production of bone food paste;
  • production of mayonnaise;
  • processing vegetable raw materials;
  • cleaning vegetable oils;
  • intensification of the technological processes of bakery production;
  • cleaning wastewaters by removing chromium and other heavy metals;
  • production of biodiesel;
  • preparation of water-fuel emulsions; and
  • disinfection of liquid pig manure.

The effect of grinding the treated raw material depends on the nature of the movement of the ferromagnetic particles in the work chamber of the unit.  Grinding can be achieved by both free collision of the particles with the ferromagnetic elements and through a constrained collision between the two elements or elements and the housing.

During operation of the vortex layer devices, gradual abrasion of the ferromagnetic particles takes place.  This can lead to a decrease of their quantity and deterioration of the quality of processing of the feedstock.  During the technological process therefore, it is necessary to maintain the optimum amount of the ferromagnetic particles in the processing chamber.  This should be carried out in a continuous mode.  The stoppage of the production line every time the number of ferromagnetic elements falls below a critical level, in most cases, is simply not possible from the technical standpoint.

GlobeCore has developed and manufactures special devices that measure the amount of the ferromagnetic particles in the work chamber of the vortex layer devices.  In the case of critical values, the special devices are able to make the addition of new ones.  The optimal amount of the ferromagnetic elements for each technological process will vary, hence their critical amount will be different respectively.  The amount can be set on the control panel of the equipment.

Besides the production of vortex layer devices, GlobeCore also provides delivery for its work chambers and ferromagnetic particles in all corners of the globe.