Mechanical lime shaft kiln: coal fuel, preferred for calcination
The selection of fuel for mechanical lime kiln is directly related to the quality and efficiency of lime calcination. After long-term practice, coal is undoubtedly an ideal fuel for mechanical lime kilns.
In terms of calcination controllability, coal has significant advantages. During the operation of a mechanical lime kiln, there are different temperature and heat requirements at different stages. During coal combustion, the combustion speed and heat release can be accurately controlled by adjusting the air intake and controlling the coal seam thickness. For example, during the preheating stage, reducing the intake air and decreasing the intensity of coal seam combustion can ensure a steady increase in temperature inside the kiln; During the core stage of calcination, increasing the air volume and thickening the coal seam provide sufficient heat to ensure the complete decomposition of limestone. This precise control enables the calcination process to be fully mastered.
Coal fuel also ensures the stability of lime quality. The heat generated by stable combustion evenly acts on limestone, causing it to slowly decompose at an appropriate temperature, avoiding the occurrence of burning and overburning due to large temperature fluctuations. The lime produced in this way has high activity and low impurities, and is widely used in industries such as construction and metallurgy. Its quality is highly recognized by the market.
Although coal combustion produces certain pollutants, with modern environmental protection technology, mechanical lime shaft kilns can efficiently calcine coal and achieve green production, making them the best choice for lime production fuel.
