What are the fuel requirements for lime vertical kilns
Lime vertical kilns have strict requirements for fuel selection. The following are the main requirements for fuel in lime vertical kilns:
Block fuel: Lime vertical kilns tend to use block fuels such as coking coal, anthracite, etc. Block fuels can provide more stable heat output during combustion, which is beneficial for the uniform calcination of limestone.
Low volatile matter: Fuel with low volatile matter, such as anthracite or treated bituminous coal, can reduce heat fluctuations during calcination and ensure the stability of lime quality. Excessive volatile matter may lead to unstable combustion, affecting the yield and quality of lime.
Low sulfur content: Lime vertical kilns require the sulfur content of the fuel to be controlled at a low level to reduce the emission of harmful gases such as sulfur dioxide and meet environmental protection requirements. Low sulfur fuels help protect the ecological environment while avoiding a decrease in lime quality due to high sulfur content.
Heating value above 5000 kcal: The heating value of a fuel is an important indicator of its combustion ability. The lime vertical kiln requires the calorific value of the fuel to be no less than 5000 kcal to ensure that the temperature inside the kiln can be maintained within a suitable range and promote the complete decomposition of limestone.
Based on the above requirements, coking coal, anthracite coal, and processed bituminous coal are ideal fuel choices for lime vertical kilns. These fuels can meet the requirements of lime vertical kilns for combustion stability, environmental friendliness, and calorific value, thereby ensuring high-quality, efficient, and environmentally friendly lime production.
