Product Introduction

Types of Kiln Construction Mechanical shaft kilns, also known as mechanical vertical kilns, can be classified into two main categories based on operation methods: ordinary shaft kilns and mechanized shaft kilns. A mechanized shaft kiln is a continuous-operation vertical kiln that employs mechanical feeding, mechanical air supply, and mechanical discharge. The shaft kiln is a cylindrical structure where materials are added from the top and discharged from the bottom after calcination. Based on temperature variations and distribution within the vertical kiln, it is divided into three zones from top to bottom: the preheating zone, the calcining zone, and the cooling zone. In the preheating zone, materials are preheated using the heat from flue gases. In the calcining zone, materials are calcined using the heat released by fuel combustion. In the cooling zone, the calcined materials exchange heat with the injected cold air, cooling the materials themselves while the heated air enters the calcining zone as combustion-supporting air.

Type:
Discharge Type on Four Sides: The kiln uses a four-sided reciprocating discharge device for material unloading.

Features:
1. The four-sided ash discharge device of the furnace body and the fully sealed structure with airlock valves at both ends of the silo ensure that the air supply operation does not need to be stopped during discharge, thereby achieving uniform oxygen supply and stable temperature, improving the calcination efficiency of the furnace body, and ensuring the yield of calcined products.
2. The four-sided ash discharge structure significantly reduces energy consumption. Tests have proven that, taking an industrial furnace with a daily calcination capacity of 300 tons as an example, conventional domestic discharge devices require a 75KW motor, whereas the discharge device described in this invention only needs four 4.0KW motors.
3. The discharge speed is adjustable, effectively improving the uniformity of the material surface, thereby enhancing the calcination efficiency.
4. It avoids excessive squeezing of the finished material blocks, ensuring the integrity of their particle size while reducing equipment wear and resulting in a low failure rate.
Screw Cone Ash Discharge Type: The key to screw cone ash discharge is the smooth downward movement of materials inside the kiln. Through the screw cone ash discharger, the quicklime calcined in the kiln chamber can be smoothly and evenly discharged into the two-stage airlock valve at regular intervals. It can freely control forward and reverse rotation as well as the discharge speed outside the kiln, while also ensuring uniform material discharge across the cross-section inside the kiln. This guarantees a uniform descent of the material surface within the kiln and allows for timely removal of any abnormalities in the material. It facilitates uniform ventilation across the kiln cross-section, effectively preventing production anomalies such as clinker formation inside the kiln, thereby ensuring normal production operations.
Disk ash discharge type:
The key function of the rotary ash discharger is to ensure the smooth downward movement of materials within the furnace. The rotary ash discharger developed by our company can uniformly and periodically discharge the calcined lime from the vertical furnace chamber into the two-stage airlock valve. It uses a computer to conveniently control forward rotation, reverse rotation, and discharge speed. In addition to its ash discharge function, the rotary ash discharger can also adjust the permeability by rotating the material column inside the active kiln. Advanced features: 1. During the ash discharge process, it does not crush or damage lump lime, significantly reducing the amount of powdered lime generated. 2. The discharge process ensures a smooth and even descent of the material surface throughout the furnace, maintaining a flat material surface. 3. Process operators often need to adjust furnace conditions based on changes in raw material and fuel quality as well as external factors. For example, it can be adjusted for single-side ash discharge, making this equipment highly adaptable for furnace condition adjustments. 4. The equipment is lightweight, has a simple structure, and is convenient to operate and manage.