Superfine powder dryer will replace rotary flash dryer

Shenyang Yitong venture company of Northeast University has successfully developed an ultra-fine powder dryer, which is specialized in drying materials with strict requirements for ultra-fine and nano-sized particles. It is a multifunctional dryer integrating drying, crushing and grading. It has been successfully applied to ultra-fine zirconia, nano calcium carbonate, nano aluminum hydroxide, micro powder aluminum hydroxide and nano magnesium hydroxide Drying. For the materials with secondary agglomeration, the superfine powder dryer is an alternative to the rotary flash dryer.

The basic working principle of the superfine powder dryer is to complete the drying of the material by the super crushing ability of the high-speed agitator, the particle size control of the material by the classifier and the re crushing effect of the secondary agglomeration. The rotary air flow has a great relative movement with the material particles, so as to strengthen the heat and mass transfer principle to complete the drying of the materials. Its unique advantages are the high-speed crushing device installed at the bottom and the adjustable classifier at the top, which can easily control the particle size of the product; its structure is more advanced, and the maintenance is more convenient. Therefore, the superfine powder dryer has stronger crushing and dispersing ability, which is very suitable for the drying of superfine materials.

For bulk or viscous materials, superfine powder dryer can be used instead of flash dryer, especially for materials with secondary agglomeration. The effect of superfine powder dryer applied to these materials is better. Through the improvement of rotor structure and the control of drying air flow, nano superfine powder dryer can be applied to the drying of organic matters such as nitrile rubber.

The superfine powder dryer has been successfully applied to the drying of nano calcium carbonate, nano aluminum hydroxide, micro powder aluminum hydroxide and nano magnesium hydroxide. Due to the strong surface binding force of nano materials in wet state, the materials have great viscosity, resulting in agglomerations, poor fluidity, difficult transportation and drying. In the drying process, this binding force causes material agglomeration and affects product performance. Therefore, the materials should be prevented from bridging in the drying process to effectively disperse the agglomerated materials. In addition, nano materials generally contain modifiers, whether organic or inorganic, are easy to decompose when heated. Therefore, the thermal sensitivity of nano materials should be considered when drying. Superfine powder dryer is able to adapt to the drying characteristics of nano materials, has a very good drying effect