Solution for Cement Industry 

First,Precast Product Solutions for Cement Kilns

1. Prefabricated Products Research and Development Ideas  

2. Prefabricated Products Features 

3. Types of Prefabricated Products 

3.1 Kiln Hood Prefabricated Parts 

3.2 Prefabricated Components at the Larynx of the Grate Cooler 

3.3 Prefabricated Components at the Low Wall of the Grate Cooler 

3.4 Prefabricated Components of the Kiln Tail Smoke Chamber

Second,Solutions for Anti-crusting Microcrystalline Material
 

1. Mechanism of Crust Generation

     Only a small amount of harmful components volatilized in the clinker firing process are discharged into the atmosphere, and the rest will condense on the raw materials with lower temperature when the flue gas in the kiln moves to the low-temperature area of the kiln. When the temperature rises, it evaporates, thus producing cyclic enrichment. When the cycle enrichment to a certain extent, will produce alkali chloride (RCl) and alkali sulfate (R 2 SO 4 ) and other low melting point compounds, wrapped part of the raw powder adhered to the smoke chamber wall, shrink and C4, C5 preheater cone, rising pipe and feeding pipe, forming a dense crust.

2. Introduction to Anti-crusting Microcrystalline Materials

     The new nano-crystalline material produced by our company has been successfully applied in the cement industry with its excellent anti-skin, high wear resistance, corrosion resistance, high temperature resistance, rapid cooling and rapid heating and other properties, and has achieved significant energy saving and consumption reduction effect, light weight and simple construction technology. Long-term use without deformation, the wear resistance of nanocrystalline sheet (wear amount of about 0.03g/cm2) is 2 to 3 times that of cast iron, almost no abrasion, no chemical reaction with raw powder, excellent anti-crust performance has a longer service cycle.

3. Main Specifications and Use Position 

    Specifications and Models:

①300×300×35mm，200×200×35mm，200×100×35mm：Mainly used for decomposing furnace cone, smoke chamber, preheater cyclone, kiln head cover, grate cooler and other position (can be customized according to customer requirements)；

②300×300×50mm：Mainly used for shrinking (can be customized according to the effective inner diameter of the shrinking)；

③A diameter of 500 mm / 600 mm / 700 mm / 800 mm / 900 mm x 500 mm x 40 mm microcrystalline tube as a whole：Mainly used for all levels of feeding pipe and coal injection pipe；

④ 975×325×40、920×325×40、725×325×40mm：Mainly used for tertiary wind gate (can be customized according to the base radius and thickness of tertiary wind gate).

    Usable Position：

    Smoke chamber, flue, calciner body, feeding pipe and other position.

4. Physical and Chemical Indexes of Microcrystalline Products

5. Display of Anti-crusting Microcrystalline Materials

6. Excellent Properties of Anti-crusting Microcrystalline Materials

①Anti-crusting: Anti-crusting effect is significant, can effectively alleviate lining crusting, prevent clogging;

②High Temperature Resistance: the long-term use temperature of the Nanocrystalline Plate is between 1250-1350℃, which fully meets the working conditions of the kiln tail smoke chamber and the preheater, and has better temperature resistance than the castable;

③Good Wear Resistance: Nanocrystalline Plates have abnormal wear resistance, and the wear capacity is about 0.03g/cm3, which is much better than other refractory products;

④Good Thermal Shock Stability: Thermal Shock Stability is greater than 25 times under 1000℃ water cooling conditions.

Summary: 

     It has been proved that the New Nanocrystallitic Material has excellent properties such as Anti-crusting, High Temperature Resistance, Corrosion and Candle Resistance, and Good Thermal Shock Stability. It is very suitable for cement industry where crusting, wear and high temperature resistance, especially in the cement enterprises where hazardous waste and raw materials are high in harmful components.

7. Technological Advantages of Anti-crusting Microcrystalline Materials

①Effectively reduce the labor intensity of inspection workers;

②Improve the controllable range of working conditions, and improve the working conditions significantly;

③Reduce the safety hazards of the crust cleaning work and comply with the current situation of safety production;

④After using the liner, the thickness of the insulation layer can be appropriately increased, effectively reducing heat loss and reducing energy consumption of cement tons;

⑤The extension of the service cycle not only saves the cost of materials, but also saves a lot of construction costs and improves the overall operation rate of cement kilns.

8. Microcrystalline Board Construction Case

9. Overall Blanking Pipe Scheme

10. Precautions for the Use of Anti-crusting Microcrystalline Materials:

①When occasionally found crust, no need to clean up, when the crust reaches a certain thickness will fall off by itself;

②Crusting phenomenon is found in the process of use, which can be cleaned by water gun, and can not be used to impact a part for a long time;

③If the crust is caused by the accumulation at the bottom, the wind cannon can be used to hit the crust part or gently poke the crust part with steel, and the steel can not be used to directly impact the main body of the anti-crust liner, so as to avoid damage to the liner.