Centrifugal dynamic air classifiers (CDC)

The size of separation products in classifiers CDC is adjusted by changing rotor speed of the classifier and position of regulating elements and is in the range from a few to 200 μm depending on capacity and properties of separation material.

• CDC classifiers are used to separate disperse materials in air flows in terms of size, density, particles shape and produce highly dispersed products: fillers, colorants, etc.

• CDC classifiers possess high separation efficiency; average classification efficiency factor is no less than 80%.

• Basic material is loaded into CDC classifiers either in a bulk (mechanically) or passage (as an aerodisperse flow) mode.

• CDC classifiers operate either autonomously or as a part of a milling complex with any mills.

• In-operation size adjustment of separation products.

• CDC classifiers are introduced into a processing line either with or without air flow recirculation.

• CDC classifiers can be used for milling and dedusting of various metallic and nonmetallic materials.

• CDC classifiers are easily adjusted to any of the existing processing lines.

By 2008 we've supplied more than 40 centrifugal dynamic classifiers CDC with capacity of 0.25 to 25 t/h. As of now CDC classifiers of SPC "Lamel-777" are engaged in production of finely dispersed chalk, gypsum, lime, dolomite, marble, red lead, shungite, graphite, glass sand, metal and sintered power, different colorants and can be used for separation of other disperse materials (ref. Sales Geography).

* - we can design and produce CDC classifiers with desired capacity and separation size specifications.

Fig.1 is an example of separation sizes and separation curve in one of CDC-5 operation modes during dolomite filler production.

d, μm

Fig.1. f(d), Df(d), c(d), Dc(d) - fractional composition of fine and rough separation products,

Ф(d) - separation curve (probability of d size particle occurrence in a fine product).

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