Vortex Electromagnetic Mill

Vortex Electromagnetic Mill is used to grind and granulate cement without disturbing its structure.

Cement is the most expensive component of concrete; this material is the decisive factor in the quality of concrete and the durability of concrete structures. However, in most cases the binding properties of cement are not fully utilized, causing additional expenses and reducing construction material quality. This is due to two factors:

- separate cement particles (70 μm and larger) are not completely involved in the hydration of cement. On average, the amount of non-hydrated cement reaches 20-25%;

- cement may lose up to 15% of its activity during a month in storage due to absorption of moisture from the air (resulting in sticky cement).

It is possible to improve efficiency and reduce the required amount of the binding material by increasing the fineness of grinding, optimizing the granulometric size composition and changing the shape of powder particles. Activation is required for sticky cement, which can restore the original quality grade of the material. Milled and activated cement features accelerated hydration and increased strength enhancement.
One of the promising methods of improving cement efficiency is the application of electromagnetic fields, in particular, ferromagnetic particle vortex layer devices.

The unit operates on the principle of transforming the energy of electromagnetic field into other forms of energy. The unit is a chamber (pipeline) of 90-136 mm diameter, located inside rotating electromagnetic field inductor. There are ferromagnetic cylindrical elements of 0.5 – 5 mm diameter and 5 – 60 mm length in the operating area, from several dozen to several hundred (0.05 – 5 kg), depending on the volume of the work zone.

The chamber can be designed in several ways depending on the requirements of the processes in the chamber.

For liquid phase processes, strainers  are installed on the sides of the bush, or at outlet end only. If fibrous materials are processed, labyrinth type strailers are installed. These devices hold the ferromagnetic particles in the work zone.

The main components of electromagnetic units with vortex layer are: the inductor of rotating electromagnetic field with cooling system, connected to three phase 380/220V, 50Hz power supply, and operating chamber with ferromagnetic elements.

Consumption of energy in the chamber is defined only by its design, material and the thickness of the walls and does not depend on magnetic field strength. To reduce energy consumption, we manufacture the chamber from a non-magnetic material (stainless steel).