Which is better for vertical kiln and rotary kiln
Vertical kiln and rotary kiln are two main types of kilns, each with advantages and disadvantages. Vertical kiln is famous for its compact structure and low investment cost, which is suitable for small and medium-sized production. Its vertical design enables small floor area, high thermal efficiency, and utilization of low heating value fuels such as converter gas, reducing production costs. In addition, the vertical kiln has unique advantages in the production of nano-calcium carbonate, with high COin the flue gas and low recovery cost. However, the vertical kiln has high requirements on the particle size of raw materials, the operation level needs to be strictly controlled, and there are problems such as high over-burning rate and low product activity.
Rotary kiln is especially suitable for large steel enterprises due to its large capacity and stable calcination quality. The open calcination method enables the material to be heated evenly, the product activity is high, and can adapt to a variety of particle size raw materials. The rotary kiln can also be equipped with preheater and cooler to further improve the thermal efficiency and reduce energy consumption. However, the rotary kiln equipment is heavy, covers a lot of land, has high investment cost and strict fuel requirements.
The production scale, raw material characteristics, energy conditions and environmental protection requirements shall be taken into consideration when selecting which type of kiln. If small and medium-sized enterprises pursue low-cost and small-scale production, vertical kiln is the ideal choice; If large enterprises need high capacity and quality lime, rotary kiln has more advantages.
