The type of lime kiln with the least investment in lime shaft kiln
Choosing the appropriate type of lime kiln is crucial for controlling investment costs in lime production. Among numerous kiln types, the lime vertical kiln stands out due to its low investment and has become the economic choice for many enterprises.
The lime vertical kiln has a simple structure and is mostly a vertical cylindrical kiln body, divided into a preheating zone, a calcination zone, and a cooling zone. This simple structure results in relatively low construction investment, making it an attractive choice for enterprises with limited funds. Compared with rotary kilns, vertical kilns have relatively smaller kiln body length and footprint, and fewer equipment and materials, greatly reducing construction costs.
From an operational perspective, the lime shaft kiln is relatively easy to operate and has strong adaptability to raw materials, which can meet the firing requirements of various limestone raw materials. Its energy consumption is relatively low, and due to its structural characteristics, it consumes less fuel per unit product, thereby reducing production costs.
Common lime vertical kilns include mixed material vertical kilns, gas vertical kilns, etc. Among them, circular section kiln bodies are widely used, including straight cylindrical, truncated conical, vase shaped, etc. The straight cylindrical kiln body has a simple, stable and easy to build structure, with a small volume surface area and low heat dissipation loss; The conical kiln body is conducive to the uniform falling of materials and reduces the kiln wall effect; The vase shaped kiln body is developed based on the truncated conical kiln body, further optimizing the distribution of materials and airflow inside the kiln.
However, lime shaft kilns also have some shortcomings, such as large footprint, unstable product quality, and low degree of automation. But overall, for enterprises pursuing the least investment, lime kiln is still a worthwhile choice to consider.
