Notices during the Drying Process of Atlapulgite

The activated clay drying Notes activated clay is mainly used in petroleum catalysis and mineral oil, vegetable oil decolorization.
The activated clay is mainly used in petroleum catalysis and mineral oil, vegetable oil, such as bleaching. It is after sulfuric acid, activated by the high-grade bentonite finished, rinses the solid-liquid separation, drying, grinding and other processes made. It is the main quality parameters are: the degree of activity, the decolorization rate, free acid content.
With the drying of the more widely used, the rotary drum dryer and a growing number of applications the use of activated clay and activated clay. But white soil drying than the concrete, the metallurgical industry as specialized equipment, production process specifications. Does not apply to the market a lot of stereotypes drying equipment. The number of activated clay factory precisely because of the inefficiency of production equipment, high costs of equipment operation and product quality, only a few little profit. Making the new activated clay manufacturers were forced to seek the effectiveness of the production equipment, advanced technology and equipment manufacturing enterprises.
Activated clay drying production optimize the design must first meet to produce the quality of competitive products, followed by low investment, low running and maintenance costs of machinery and equipment, labor productivity, and to take into account the working conditions and environmental protection.
Solid-liquid separation of activated clay, water content 30 to 45 percent, it is very sticky, and into the dryer, the dryer structure is not suited, not only difficult to dry, and very easy to produce 100mm slug material. If the dryer temperature is too high, the montmorillonite crystal water cause the product to lose too much, and the degree of activity is seriously reduced; if the temperature is too low, the free water is difficult to remove the product difficult to preserve the degree of activity is also reduced. Generally activated clay after drying the moisture content is controlled below 10%.
At present, the activated clay drying by vacuum rake dryer, air dryers, belt dryers and drum dryers. Rotary drum dryer, due to high feed water, most of them will lengthen the cylinder, but the effect is the majority is less than ideal, materials and easy to produce pellets in the cylinder body solid viscous. The dryer head seals easy to burn, dust collector service life is shortened, resulting in high maintenance costs, affecting the normal production.

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