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The Aerosion Ltd. disintegrator is a patent pending device for reducing friable materials to small particles. Reduction is accomplished by launching pieces of material to be disintegrated at a closing target with sufficient velocity to cause the material to break into fine powder. Apparatus design allows for very high closing velocities between the material to ground and the teeth on the grinding wheel, thereby producing very fine powders. In most applications, fine particles are drawn off the top of the disintegrator and collected with a cyclone.
The throwing wheel is mounted inside the grinding wheel and spins in the opposing direction. A specially designed high efficiency motor provided by SKF Precision Equipment drives each wheel. The energy produced by the drive motors is applied directly to the reduction of the material to be ground. As a result, the Aerosion disintegrator uses much less energy than a jet mill and less than 60% of the energy of a ball mill or roller mill in the production of ultra fine ground particles.
In applications where the powder produced must be classified to a tight size specification, the first stage classification is accomplished in the disintegrator body. Fine material is drawn out the top of the disintegrator and oversize material drops out of the bottom of the disintegrator chamber. Subsequent classification can be very effectively achieved by using cyclones to drop oversized particles out of the powder/air stream or by using a conventional spin rotor classifier.
The disintegrator is designed to focus the impact of material on the grinding teeth and rails of the throwing wheel. These surfaces are made of wear resistant materials such as ceramics to increase life of the wear parts and reduce contamination of the finished product. The disintegrator is designed for rapid servicing and quick replacement of grinding surfaces.
Each motor is powered with a variable speed electronic motor control so the closing velocity of the material to be ground with the grinding tooth can be controlled. Particle size is controlled by adjusting the speed of the spinning grinding and throwing wheels. Higher speeds produce smaller size particles. The Aerosion disintegrator throwing and grinding wheel can be operated at very high speeds to produce very small particles in the micron and submicron range.
The Aerosion disintegrator is torque and vibration free, thereby reducing the need for special foundations and supports. In most cases the grinder can be set on a standard concrete floor in a 6'x6' space.
The Aerosion disintegrator is in use producing finely ground zeolites and cement for the use in oil production. The fine particle size, combined with low operating and capital costs make the disintegrator uniquely suited for the application. The low cost of grinding material to fine powders and the ability to control particle size can reduce powder costs so that applications that were not economical before the introduction of the Aerosion disintegrator may now be feasible.
The Aerosion disintegrator does not cut, mix or round materials being reduced, as do some other reduction methods. Rather energy is applied to the material and it shatters into small particles. The sharp edges make the particles produced using the Aerosion Disintegrator improves packing characteristics.
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