Bulk material roasting equipment: large-section multi-piece tunnel kiln

The large-section multi-joint tunnel kiln can realize multiple rows of kiln cars entering the kiln at the same time. The kiln system consists of: drying kiln, roasting kiln, air duct system, flue gas re-firing system, automatic roasting system, flue gas purification system, etc. The large-section multi-joint tunnel kiln design realizes factory-based modular production, with the characteristics of small footprint, high output, environmental protection and energy saving.

1. High efficiency and energy saving
It eliminates multiple kiln walls and reduces the heat loss of multiple kiln walls. Compared with a single tunnel kiln, it can reduce heat consumption by 30%. At the same time, a double-channel sealing design is adopted between kilns to ensure the smooth and reliable operation of the kiln. The new fast drying system solves the production and manufacturing problems of high-moisture raw materials and reduces investment costs.

2. Low-carbon and environmental protection
The flue gas discharged from the low-temperature preheating section and the high-temperature drying section of the drying kiln is reused in the cooling section of the roasting kiln through the flue gas re-firing system. The moisture discharged from the constant-speed drying section is sent to the flue gas treatment system for treatment, which reduces the treatment volume and oxygen content of the exhaust flue gas and ensures that the emission meets the standards.

3. Scientific planning
The architectural form of a large-scale joint plant is adopted to form a large-area and large-space joint workshop. The kiln body design uses international large-size steel to make the overall structure of the kiln strong and durable, saving maintenance costs. The construction period is short. It reaches production and standards quickly, and the investment benefits are high.