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Filling levels of the biconical, cubic and V-shaped gravity mixer tanks.

The working tanks of the mixers are designed for an optimal filling level of 55% of their total volume. Loading / filling volume is called the working volume. Mixing takes place in the mixer vessel, where the particles move along a predetermined path. The geometry of the vessel defines this trajectory. Optimal filling levels allow particles to follow a path that leaves space for movement during mixing process.

Minimum and maximum loading levels have been determined by testing with mixing machines made by Elemash.

Our company generally recommends a working volume of about fifty-five percent of the total internal volume for gravity mixers. This filling level is indicated in the parameters as 100% of the working volume. In reality, the fill level at which effective mixing is achieved is much wider. This is because the geometry of some mixer tanks continues to provide effective cross-mixing even at different filling levels.

The diagrams below show the range of effective filling levels for Elemash mixers of MB, MBD and SV series:

filling levels

The use of a static stirrer-activator affects the filling level of the mixing vessel, since in practice, for effective operation of the activator, it must be immersed in the product.

It is important to remember that filling level is a volume measurement, not a weight measurement. The bulk density of the final mixture should be used to adjust the fill level in relation to the parameter of mixer loading capacity.

Many factors contribute to effective mixing uniformity. The best result is achieved and confirmed empirically in each case. Effective mixing depends on the parameters of both the mixer and the materials to be mixed. The most significant mixing parameters are the slope angles of the mixing vessels, the viscosity of the materials and the particle size distribution. The effect of the product features cannot be unambiguously determined without test mixes and the development of mixing technology.