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Fly ash winnowing and comprehensive utilization

Fly ash sorting system equipment

浏览 Author Admin Browse Published 17/02/12

Fly ash sorting system equipment

Based on the principle and configuration of fly ash drying and separation and grinding systems of various high-fine and low-consumption power plants at home and abroad, Ruiguang Machinery has successfully developed the fly ash air separation technology and complete equipment configuration to reduce the original emissions from coal-fired power plants. The ash or coarse ash is ground, dried and sorted to achieve the finished product's ash fineness. The core equipment of fly ash wind separation includes fly ash drying equipment, ball mill, powder conveyor, and sorting machine; the process of power plant fly ash classification air separation system: the dried fly ash enters the ball mill for further processing, and the ash material is discharged. Distribute pneumatic conveying equipment → ash conveying pipeline → sorting → storage → three-level ash returns to the ball mill for reprocessing. Fly ash is sent to the ash warehouse for loading through the powder conveyer to produce ****, which can prepare high-performance concrete. The admixture (fine powder) greatly improves the economic benefits of comprehensive utilization of fly ash, and can realize the comprehensive utilization of fly ash. Phone: 13838100479

Fly ash winnowing project background Fly ash is an active mineral fine powder resource. Studies have shown that different fineness of fly ash has different effects on silicate hydration products. The finer the fineness, the higher its activity. At the same time, because the glass beads in fly ash are relatively enriched in the range of fine particles, the water demand ratio of fine ash is also less than that of coarse ash. Most of the fly ash emitted by power plants in China is coarse ash or other external ash (GB1596-2005). Therefore, the rise of fly ash grinding processing technology can not only ensure the quality of different types of fly ash supplied by power plants. It can also broaden the development and utilization channels of fly ash more effectively, increase the use level of fly ash, and further improve the economic and social benefits of enterprises.

The process of the Ruiguang fly ash sorting system fly ash is taken from the ash outlet of the power plant ash storage (coarse ash storage) to take ash. It is equipped with a manual gate valve and a variable frequency speed-regulating electric air locker to continuously send the fly ash. Into the jet conveyor pump, the fly ash is conveyed to the intermediate warehouse by means of pneumatic conveying. The fly ash is sent to the entrance of the ball mill through the slide pipe and enters the ball mill for grinding. The material ground by the mill contains a large amount of fine ash. Conveying equipment to the fine ash warehouse. The ash warehouse is equipped with a classifier for sorting. The sorted coarse ash is sent to the ball mill for grinding again. This process has the characteristics of high automation, stable output, and low maintenance costs. It is fly ash. Ideal equipment for grinding and deep processing. The air supply of the jet pump comes from the roots blower. The air flow generated by Roots fans, combined with the use of low-pressure jet conveying pumps, has the advantages of compact structure and simple equipment in short-distance conveyance. In addition, when the fan is overloaded, it has the function of directly venting air to prevent the Roots fan from overload And damage the fan.

Fly ash sorting system equipment
Fly ash drying, sorting and grinding system equipment site

Compared with the centrifugal, cyclone and rotor powder separators of similar size, Ruiguang Machinery's high-efficiency vortex separator has a much higher output, so it is more suitable for large-scale production. The advanced and reasonable structure allows the powder selection air volume, output and feeding amount to be changed in a wide range without affecting the powder selection efficiency, and its classification performance is very stable. The classification principle is advanced. Combined with multiple powder selection principles, the entire flow field was optimized using aerodynamic analysis methods, which significantly reduced the resistance of the equipment and increased the efficiency of powder selection. Energy saving and consumption reduction are very obvious. The rotor of the classifier is equipped with a national patented vortex rectifier. The air flow in the rotor only rises and does not rotate with respect to the rotor. After the airflow enters the rotor, the momentum is reduced due to the momentum moment, which saves driving power and reduces wear. The material is sorted twice in the powder selection area, and the classification accuracy is higher and more accurate.

The role of fly ash drying and grinding process The undisturbed fly ash is a composite structure composed of crystals, glass and a small amount of unburned carbon, while coarse ash is enriched with coarse porous glass and loose porous green Carbon and crystals are burned out, so coarse ash cannot be directly used in concrete and some emerging processing technologies due to its large fineness and large water demand ratio. The grinding process of fly ash has stimulated the activity of coarse fly ash, and the "fineness" and "quality" of fly ash have been processed. Its grinding effect not only increases the fineness, but also improves the particle gradation, particle shape and structure of the fly ash admixture. The experiments show that the glass microbeads, which are denser and thicker than the main components of the fly ash admixture, retain their original shape after grinding. This shows that the grinding process improves the performance of fly ash, plays a role in strengthening the effect of fly ash, and also simply improves the quality variability of the original fly ash, ensuring the uniformity of fly ash.

According to the actual situation of the customer, Ruiguang Machinery recommends the use of drying, sorting, and grinding processes to classify the fly ash in the wet ash discharge store after drying and classify it into Class I and Class II fly ash for commercial concrete or cement plants. Mix materials to increase the value of fly ash. Comprehensive utilization of fly ash makes it a waste, which improves the environment, increases economic benefits, and extends the life of the ash yard. Gongyi Ruiguang Machinery Factory specializes in the design and production of fly ash drying equipment systems, fly ash grinding sub-selection systems, free design of production line processes, and undertaking turnkey projects. If you have any needs, you can directly call: 0371-64359668, In order to provide you with more comprehensive and rich information and guidance.

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