What size of limestone particles can be calcined in a lime vertical kiln
Lime vertical kiln is an industrial equipment for lime production, which has a certain range of calcination adaptation for limestone particle size.
Generally speaking, a lime vertical kiln is suitable for calcining limestone with a particle size of 40-80 millimeters. Limestone particles smaller than 40 millimeters are prone to uneven distribution during their descent in a vertical kiln due to the influence of airflow, resulting in uneven calcination. Some particles may not have been fully calcined, affecting the quality of lime; Moreover, small particles will increase the amount of dust and make environmental treatment more difficult. Limestone particles larger than 80 millimeters have hindered internal heat transfer and gas diffusion, resulting in prolonged calcination time. This not only reduces production efficiency, but may also lead to residual calcium carbonate in the lime due to incomplete calcination, reducing lime activity.
In actual production, in order to ensure the efficient and stable operation of lime vertical kilns, it is necessary to strictly control the particle size of limestone. Before the raw materials enter the vertical kiln, limestone can be processed to the appropriate particle size through processes such as crushing and screening. At the same time, strengthen equipment maintenance and management to ensure stable parameters such as airflow and temperature inside the vertical kiln, fully utilize the calcination performance of the lime vertical kiln, produce high-quality lime, meet the demand for lime quality in different industries, and enhance the economic benefits and market competitiveness of production enterprises.
