Among all the active lime production processes, the more advanced one is the rotary kiln production process. The main advantages of the process are uniform calcination, large output, stable production operation, high degree of mechanization and automation, and good heat transfer effect. The main features of the rotary kiln production of active lime process are as follows:

1) High capacity. It is suitable for large-scale active lime production line. Now there is a lime rotary kiln with a daily output of 2,200 tons in the world. Many lime rotary kiln with daily output of 150-300 tons have been built overseas and domestic. It is in good working condition and is suitable for medium and small lime enterprises.

2) The quality of the calcined white is good. The rotary kiln is open-type calcination. The kiln structure is simple, the airflow is smooth, the sulfur-containing flue gas can be discharged in time, and the sulfur in the fuel is not easy to adhere. Therefore, the sulfur content of the product is low, which meets the requirements of steelmaking. At the same time, because the material rolls uniformly in the kiln, the heat is uniform, the product quality is stable, and the lime is less polluted, which is beneficial to obtain high-purity lime.

3) Rotary kiln can directly calcine 10~50mm fine-grained limestone. With the "fine materialization" of steel raw materials, sintering gradually replaces limestone with quicklime, and fine-grained limestone cannot be comprehensively utilized. The construction of the rotary kiln production line can not only make full use of high-quality limestone mine resources, but also meet the sustainable development policy of the lime industry.

4) The rotary kiln system with vertical preheater and rotary cooler is an energy-saving equipment. The preheater can preheat the dolomite to about 900 °C, and decompose it by about 30%, and then burn it at high temperature in the rotary kiln. After the finished product enters the cooler, the temperature can reach 600 ° C after heat exchange with the blasted cooling air. The preheated hot air is used as the secondary air necessary for combustion into the kiln, so the system has good energy saving effect and calcined white heat. Low consumption. At the same time, the temperature of the flue gas discharged through the vertical preheater of the kiln is low, between 280 and 350 °C, and the dust content is low, about 20gNm3, can smoothly meet the environmental protection requirements.

5) The active lime produced by the rotary kiln is of stable quality.

6) The use of lime rotary kiln for the production of active lime has a large investment cost and a large footprint.

       ZK Corp can provide you with the design, production, manufacture, installation and adjustment of the entire production line of 50-800 tons per day. Welcome to enquiry us to get project solution and equipment price!