Magnetic Mill

The main feature of the AVS devices, while pulverizing solid materials, are the multiple and frequent shocks and friction forces, which does not only cause pulverization of solid particles, but also activation of their surface due to deformation of the crystal lattice.

Since cement hydration begins on the surface of cement particles, the total area of the particles defines the amount of material which can be hydrated. Therefore, the rate of hydration depends on the particle size, fine grinding being necessary for quick increase of strength.

To confirm this, we experimented by atomizing 400 grade Portland cement for use as an additive in quick settling cement mix for high vibration and dynamic forces.
In this test we used 500 grams of 400 grade Portland cement, pulverized by steel ferromagnetic elements for 30 minutes.

As a result, the treatment of cement/concrete on AVS allows to:

• reach 15-25% of cement economy;
• increase concrete strength in 2-3 times;
• reduce concrete primary crystallization time up to 4-6 hours (i.e. in 4-6 times);
• obtain monodisperse fraction 0.5-10 micron 45-50%;

Technical specification

Parameter	Type
	AVS-100
Max processing rate, m3/hour– water water treatment	12
– suspension production	5
Operating pressure, MPa (kg/cm2), max:	0,25 (2,5)
Work zone diameter, mm	90
Magnetic induction in work zone, Т	0,15
Electric supply	From AC network
Frequency, Hz	50
Voltage, В	380
Rotation of magnetic field in work area, RPM	3 000
Power consumption, kW	4,5
Dimensions, mm	1200×900×1610
Weight, kg	520

Pigment milling

Grinding of 400 grade portland cement

FINE-DISPERSED CHALK PRODUCTION

Vortex layer devices intensify the process of obtaining fine-dispersed chalk and receive high quality products. Devices are reliable and can be easily installed in the premises without special foundations. When choosing a particular arrangement (in sequence, parallel, etc.), almost any production line for fine-dispersed chalk could be achieved.

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PRODUCTION OF FOAM CONCRETE

Using AVS allowed to reduce foaming agent consumption by 10%, lime consumption by 2%, without making the product heavier.The specific weight was reduced, while strength to weight ratio increased. The quality of foamed concrete can be increased by processing the lime-sand or cement-sand mix in the vortex layer to activate SiO₂.

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NANOTECHNOLOGIES IN CONCRETE PRODUCTION

Tests show that the samples prepared using only magnetic water, are 20-25% less durable. This is due to the improved quality of mix preparation in the vortex layer. Additive content over 1% shows decrease of strength, both flexing and compressive. The use of modified concrete allows to reduce metal amount per structure and to reduce costs.

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PRODUCTION OF SILEX BRICK

The strength of the brick are directly correlated to the activation of SiO2 and uniform distribution of the components. Lime and sand mix was sifted through the AVS-100 unit. It is interesting that such brief processing (fractions of a second) did not cause pulverization of sand and lime.