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Flash drying of powdered building materials additives

Overview: Application clientFoshan Nanhai Wanxing Material Technology Co., Ltd.Types of sectionBuilding Material Additive Engineering IndustryChoose productsSXG series rotary flash dryerproject descriptionThe special rotary flash dryer for powdered building mat…

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Application client

  Foshan Nanhai Wanxing Material Technology Co., Ltd.

Types of section

  Building Material Additive Engineering Industry

Choose products

  SXG series rotary flash dryer

project description

  The special rotary flash dryer for powdered building materials additives has strong pertinence, practicability and high energy efficiency. When we produce equipment for users, we design and manufacture the most suitable and best quality drying equipment for users according to the characteristics of the required drying products, the user's process requirements, and the experience accumulated over the past few decades.

Device Description

  The flash dryer is mainly composed of an air inlet system, a heating system, a feeding system, a drying host, a collection and dust removal system, an exhaust system, and a control system. When working, the wet material enters the drying chamber from the screw feeder. The material meets the high-speed rotating hot air in the drying chamber. The fine powdery material is carried by the hot air to the upper end of the drying chamber, and the material that cannot be taken away falls on the bottom of the drying chamber. It is broken by the crushing device at the bottom, the material is quickly dispersed, and the contact area between the material and the hot air increases rapidly. Under the action of centrifugal force (with a classification device on the top), products with a certain degree of dryness and fineness are blown out of the classification device, and the materials are quickly dried in the process.


  The flash dryer has the advantages of high technology content, high standardization, environmental protection, safety, low consumption, and simple maintenance. In terms of design structure:
  ①The bottom of the dryer is equipped with an inverted cone structure to gradually expand the flow section of the dry gas from bottom to top. The bottom air flow is relatively large, and the upper air flow is relatively small, so as to ensure that the large particles in the lower part are in a fluidized state, and the small upper part The particles are also in a fluidized state, and the hot air rotates along the vertebral body to increase the bottom wind speed, reduce the length of the cantilever part of the stirring shaft, and increase the safety and reliability of operation; the bearing can be placed outside the machine to effectively prevent the bearing from being at high temperature Zone work, thereby prolonging the service life of the bearing.
  ②A scraper is set on the mixing tooth. When the material is crushed by the mixing tooth, it is thrown to the wall of the machine and adhered to the wall. If it is not scraped off in time, the equipment will vibrate in severe cases and even cause the mixer to become stuffy. . A scraper is set on the mixing gear to peel off the material sticking to the wall of the machine in time to avoid sticking to the wall.
  ③The rotation of the stirring shaft is controlled by a stepless speed regulation motor. Choose different speeds according to product particle size requirements. The faster the stirring shaft speed, the smaller the particle size of the product.
  ④The upper part of the dryer is equipped with a classifier. By changing the hole diameter of the classifier and the height of the classification section, the air flow rate is changed to control the size and number of particles leaving the dryer, the final moisture content and the residence time of the material in the drying section.
  ⑤The number of revolutions of the screw conveyor of the feeder is controlled by an inorganic speed-regulating motor. Control the feeding speed according to the material properties and drying process parameters.
⑥The equipment has a compact structure and a small footprint. It integrates drying, crushing and classification. It is an organic combination of swirling technology, fluidization technology, spouting technology and convection technology. After drying, it does not need to be crushed and sieved, which simplifies The production process saves power and equipment costs.

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