Activated Carbon

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The wet material is fed through customized feeding systems into the grinding and drying section of the dryer's main body. The grinding rotor disperses the wet material into very fine particles and the fine particles are fluidized in the grinding chamber by temperature-controlled, hot gas coming in from the air heater.

The hot air (or inert gas) can be heated up to 650 °C and as the wet product is dispersed, it is reduced in size in the bottom section of the dryer. The system is kept under a negative pressure by the exhaust fan and the surface area of the product is increased enormously so that water (or other solvents) is evaporated instantaneously.

The dry and fine particles are conveyed with the gas stream to the top section of the dryer where a separator classifies the particles by size. Then the particles pass the classifier at the set cut point and are conveyed with the exhaust air to a powder air separating system like the cyclone, cyclone filter or cyclone scrubbers.

The Micron Dryer flash dryer retains a fluidized bed of product in the drying chamber to ensure a low level of adhesion of wet material on the inside wall of the drying chamber. Moreover, process parameters like classifier speed and outlet temperature can be adapted to control moisture content and particle size of the end product.

Ultra fine regular end product - Due to its specially designed dispersion rotor, our flash dryers are able to produce ultra-fine powders in one step from suspensions, slurries, pastes and dough, filter cakes or wet powders.

High evaporation capacity - Due to the combination of high ?T with a good dispersion of the wet product in the air, our flash dryers can evaporate large quantities of liquids.

Compact design - Compared to other direct drying technologies, the flash dryer requires up to 50% less space.

Multi-purpose - Filter cake or slurry, in the same machine. Therefore with the Drymeister-H unlimited mechanical dewatering is possible previous to the final drying stage.

Easy access - Either for cleaning, inspection or maintenance inside the dryer, our flash dryers offers the best accessibility from the market, regardless which size.

Various systems available - Open, closed- and recycle system concepts.

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Activated carbon is known for its unique properties; low density with many pores and significantly high surface area, characteristics that make it a candidate for adsorption. Activated carbon is used for a wide array of environmental, industrial, chemical and medical applications. Ultra-fine particle size product is excellent for removal of pollutants from air and industrial processes.

Depending the on the application, i.e. the particle size requirements and hardness of the material, the Mikro-ACM Air Classifying Mill or the Alpine AFG Fluidized Bed Opposed Jet Mill can be used. The ACM efficiently reduces the particles most often from a roller mill in the 100 to 300 µm size range to a D50 in the range of 25 to 75 µm. For ultra-fine particle sizes, D50 < 25 µm, and/or more abrasive activated carbons, the Alpine AFG Fluidized Bed Opposed Jet Mill is an excellent choice. The AFG Jet Mill is capable of reducing the D50 as low as 5 µm.

The Mikro-ACM and Alpine AFG Jet mill are available in various sizes, from lab/pilot scale to large-scale production.