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Zhengzhou Taida coal ash drying system is specially designed for coal ash raw materials. The whole drying process is designed for coal ash features like low bulk density and high variable fluidity. Taida coal ash drying system is a kind of efficient drying equipment applied for construction, building materials and hydraulic power industry. 

【Input size】:


【Output capacity】:


【Applicable materials】:  coal ash, coal slurry, desulfurized gypsum, kaolin, bentonite and etc.       

Product Introduction

      Coal ash is a kind of volcanic ash-like mixed material formed by pulverized coal after high temperature combustion. It is a coal-fired power plant that grinds coal into coal powder below 100 microns, which is sprayed into the furnace with preheated air to form a suspended state, which produces high-temperature flue gas mixed with a large amount of incombustible materials, which is captured by a dust collecting device. Fly ash. China is a big coal producer, so the amount of fly ash per year is also very impressive. Under this circumstance, the comprehensive utilization of fly ash, turning waste into treasure and turning harm into profit has become an important technical and economic policy in China's economic construction. It is a solution to the contradiction between China's power production environment pollution and lack of resources. The important means is also one of the tasks that power production is facing. After development, the fly coal ash is processed by the fly coal ash dryer, and it can be widely used in various departments such as construction, building materials, and water conservancy.

coal ash dryer

coal ash dryer
Main applications of dried coal ash, it is divided into major severn types in China: 


1. Fly coal ash aerated concrete: Fly ash aerated concrete is a new type of lightweight insulation and energy saving wall material.

2. Fly coal ash concrete hollow block: In recent years, fly ash concrete hollow blocks have developed rapidly. The main raw materials are fly ash, aggregate, cement, etc. The raw materials are made by processes such as metering, mixing, forming and curing.

3. Cement fly coal ash expanded perlite concrete insulation block: The process is basically similar to the fly ash concrete hollow block.

4. Fly coal ash concrete paver: Fly ash concrete pavement bricks are made of cement and fly ash as mixed cement and coarse aggregate. The raw materials are made by metering, stirring, forming and curing. The molds can be changed into square bricks, interlocking pavers and antiques. Bricks, green grass, bricks, road blocks and other shapes of pavement bricks.

5. Fly coal ash bricks: Fly ash bricks are prepared by using fly ash and lime as main raw materials, adding appropriate amount of gypsum and aggregate, preparing by billet, pressing forming, and curing with high pressure or atmospheric pressure steam.

6. Fly coal ash ceramsite and concrete products: Ceramsite is an artificial light aggregate. Fly ash ceramsite is made of fly ash as the main raw material, processed into balls, sintered or swelled, called fly ash ceramsite.

7. Fly coal ash concrete lightweight partition board: Mainly on the basis of light wallboard, add some fly ash to produce mild partition board when making ingredients, or produce mild wall board with cement fly ash foam concrete.

8. In addition, fly coal ash can also be used in synthetic fertilizers: as waste water, flocculant for waste gas, and the like.

coal ash dryer

      Compared with Zhengzhou Taida's new fly coal ash dryer, the previous centrifugal dewatering machine is expensive, has low production capacity, and has a small dewatering rate. Usually, it can only be used for about 10% of precipitation, and 15 to 20% of water content still exists. The new fly ash dryer complete process consists of three major components: heating system, heat exchange system and ventilation dust removal system. Part of the heating system adopts hot blast stove technology, which has sufficient heat capacity, good heat transfer effect and simple structure. The heat exchange system is the drying drum. The lifting plates in the cylinder are staggered into a spiral shape, and the materials are repeatedly thrown, and the heat exchange efficiency is extremely high. The ventilation dust removal system needs to be equipped with a dust collector. Because the fly ash particles are fine and light in density, they are easily taken away by the airflow under the negative pressure state after drying, resulting in a change of the fluid medium, and the dusty gas has a large moisture to prevent It is sucked out by the air intake system and discharged into the atmosphere, resulting in waste of resources and environmental pollution. The dust collector uniformly collects dust.

Product Superiority

  • Energy saving 

    Taida coal ash drying system provides good prospect for coal ash comprehensive utilization. It holds wide application range. 

  • Complete drying system 

    Whole coal ash drying line adoopts compelete drying system. With simple structure and good heat transferring effect.

  • Flexible operation 

    It allows large flucation for the product flow,which will not affect product quality and provides convenience for cleaning. 

  • Small resistance 

    It can be used to dry particle materials, even for thos materials with large stickiness. 


Working Principle

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      Coal ash dryer working principle: wet coal ash will be sent to horizontal rotary cutting machine by conveyor for crushing, which can avoid drying problems caused by large bulks and improve drying effect. Crushed materials will be sent to drum dryer where there are many lifting plates arranged in screw shape set in drum. Coal ash will be repeatedly lifted and scattered under the function of drum rotation. Striking device set on drum wall will further crush materials. Lifted materials will fully contact with hot air for heat exchanging and moisture evaporation. Dried products will be discharged from outlet. Dusty gas will be recycled by dust removing machine. 


Technical Parameter

Model  Drum diameter(M) Drum length(M) Drum slope(%) Motor power(kw) Drum rpm
Occupation area(m²)
TDGT-12100 1.2 10 3-5% 7.5 3-8 100
TDGT-15120 1.5 12 3-5% 10 3-8 150
TDGT-15150 1.5 15 3-5% 18.5 3-8 200
TDGT-18120 1.8 12 3-5% 11 3-8 260
TDGT-22120 2.2 12 3-5% 18.5 3-8 260
TDGT-22140 2.2 14 3-5% 18.5 3-5 300
TDGT-22160 2.2 16 3-5% 30 3-5 300
TDGT-24140 2.4 14 3-5% 30 3-5 350
TDGT-24180 2.4 18 3-5% 37 3-5 400
TDGT-24220 2.4 20 3-5% 37 3-5 450
TDGT-30200 3.0 20 3-5% 55 3-5 500
TDGT-30220 3.0 22 3-5% 75 3-5 500
TDGT-40250 4.0 25 3-5% 210 3-5 800


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Factory Address: No.198, Longding Industrial Park, Lianhua Road, High-Tech Zone, Zhengzhou City

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