The new type of lime shaft kiln uses a flat material feeder to feed more evenly
In the production and operation of the new lime shaft kiln, the uniformity of the fabric directly determines the quality of lime calcination. Traditional bell shaped fabrics are prone to the phenomenon of "central stacking and empty edges", which leads to uneven ventilation resistance in the kiln, coexistence of local overburning and raw burning, large fluctuations in lime activity, and seriously affects the qualification rate of finished products.
The heavy-duty flat material distributor equipped with the new lime shaft kiln has solved this problem structurally. The equipment is made of high-strength heat-resistant alloy and can withstand continuous high temperature and material impact inside the kiln. During operation, the feeder rotates at a constant speed at the top of the kiln, and the limestone particles are evenly distributed throughout the entire kiln section through a precisely designed chute angle that matches the rotational speed. Compared with traditional dot or bell shaped fabrics, it can form a flat surface with a thickness deviation of no more than 50 millimeters, completely eliminating dead corners of material accumulation.
Uniform fabric brings significant process optimization: the airflow distribution inside the kiln is more balanced, avoiding local airflow short circuits or excessive resistance, and improving heat exchange efficiency by more than 15%; The stability of the temperature field in the calcination zone is enhanced, and the limestone is heated more fully. The firing rate is reduced to below 3%, and the over firing rate is controlled within 5%; At the same time, frequent air conditioning operations caused by uneven fabric have been reduced, resulting in a significant decrease in labor intensity for job workers.
Practical application data shows that the new type of lime shaft kiln using heavy-duty flat material distributors has a stable lime activity of over 380mL, reduces coal consumption by 8 kilograms of standard coal per ton of ash, and increases annual production of high-quality lime by over 2000 tons. This technological innovation provides reliable support for green and efficient production in the lime industry, becoming a key breakthrough in improving calcination quality.
