Centrifugal Air Classifiers

FABHIND Company  whirlwind centrifugal air classifiers are  machines for separating fine material from coarse material with a usual  fin-product range of from 40 to 400 mesh. Their accuracy in selecting  the desired fine product is amazing

As they are  built in many sizes from 20” to 24’ in diameter with capacities from a  few hundred pounds to over a hundred tons per hour, a size may be  selected to give practically any desired tonnage.

The  FABHIND Company  whirlwind centrifugal air  classifier is essentially a sizing machine, a classifier or a selector. It  does not crush nor reduce material, but is a carefully designed  apparatus for sizing, by separating the fine material from the coarse.

It is  efficient when operated alone or in a closed circuit with most types of  grinding machines. Ground materials from the Mills are conveyed to the  Air Classifier for particle size selection. The finer particles (fines)  are selected for use or storage and the coarser particles rejected and  may be returned to the Mill for further grinding.

They  may be used for the removal of fine particles (dust) from materials  already milled or in a natural fine state, but their most important  function is to operate in closed-circuit with a pulverizer.

In  “Closed-Circuit” grinding the air classifier becomes an important and  integral part of the pulverizing system and the governing factor of the  finished product.

“Closed-Circuit”  allows both Mill and air classifier to function as each was designed to  function; the one to grind, and grind only, without handicap or  hindrance, and the other to select and remove the finished product from  the pulverizer, easily, freely and as soon as made. This has been a real  accomplishment of modern science availed of by many who have understood  and appreciated its possibilities.

The  modern slow-speed durable FABHIND Company whirlwind centrifugal air classifier has truly revolutionized the pulverizing technique. It has not only been the means of materially  reducing grinding costs by increasing mill capacities from 25 to 300 %,  lowering power consumption from 10 to 50%, and decreasing upkeep, but  has greatly improved efficiencies and made possible finer, and still  finer products to meet ever more exacting trade requirements.

Its  capacity is almost unlimited, and its ability to handle enormous  circulating loads is unequaled. A 16’ Separator, for example, is taking  a feed of 8 tons per hour containing an only small percentage of the  desired product and is delivering 3 tons per hour of material 90% 200  mesh. Only a few years ago such a circulating load was unheard of, such a  capacity unbelievable, such an efficiency unknown, yet today it is  thoroughly practical, many times desirable and economical.

The  principle of FABHIND Company whirlwind  centrifugal Air Classification is simple. It consists of the exact  regulation and control of the centrifugal force and air currents, one counteracting and overbalancing the other to such a nicety that by  simple adjustments a product of almost any desired fineness is selected  and collected, while the coarser sizes are rejected. The efficiency of  operation depends upon the reliable accuracy of these adjustments. And although the principle is simple it has been a most difficult matter to  work out practically.

We are always  at your disposal to provide you with all the original spare parts for  your Air Classifiers provided by us and according to the original plans  that we have.