♦ Kiln body is made of high quality composed of carbon steel or alloy steel plate and automatic welding;

♦ Tyre,Support Roller,Open gear adopts alloy cast steel;

♦ Sliding bearing with large gap not scraping tile bearing;                 

♦ Transmission device adopts hard tooth surface reducer, flexible diaphragm coupling, dc motor;

♦ Adopts hydraulic gear wheel;

♦ Preheater scales were used respectively to veiw of kiln head, and cylinder pressure tight seal;     

♦  A slow drive device.

The coal based rotary kiln process of making sponge iron is the focus of the present write up. Although many different processes and process concepts have been emerging in this area, there were rapid births and deaths of these processes and process concepts in the middle of the twentieth century. But those operating successfully at present have many

(i) System of sealing to prevent air ingressinto the reactor,

(ii) System of throwing or slinging coal from discharge end of reactor,

(iii) System of weigh feeding and proportioning of raw materials

(iv) System of introducing controlled amount of air at regular intervals of length in such a way that it does not

oxidise the reduced product in the bed,

(v) System of temperature sensing at regular intervals of length of the reactor and recording of the same.

(vi) System of indirect cooling of sponge iron-char mixture in a rotary steel cylindrical shell using water from the outside.

(vii) System of treating waste gases and maintaining desired flow profile through pressure control.

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Quick Lime, Cement Clinker Rotary Kiln

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