What is the size of limestone raw material to be calcined in a lime vertical kiln
Lime vertical kiln is an important equipment for lime production, and its calcination effect is closely related to the size of the raw limestone. When selecting limestone raw materials, size is a key consideration factor that directly affects the efficiency of calcination and the quality of lime.
For lime vertical kilns, 40-80mm sized limestone raw materials are a common choice. Limestone within this size range can be evenly distributed in the vertical kiln, which is beneficial for heat transfer and uniform calcination of lime. Meanwhile, the moderate size also makes limestone more prone to fracture during the calcination process, thereby improving the efficiency of calcination and the activity of lime.
In certain specific cases, large limestone blocks of 80-120mm may also be used as raw materials. Although the calcination time of this large-sized limestone is relatively long, its stability in the vertical kiln is good, which can reduce the heat loss caused by the movement of raw materials. In addition, large pieces of limestone can be crushed after calcination to obtain larger particles of lime, which is advantageous in certain situations where larger particles of lime are required.
Whether choosing 40-80mm limestone or 80-120mm large limestone blocks, it needs to be determined based on specific production needs and equipment conditions. In actual production, various factors such as calcination efficiency, lime quality, equipment wear, and energy consumption should be comprehensively considered to select the most suitable limestone size to ensure the stable operation and efficient production of lime vertical kilns.
