Info of the Major Elements of Rotary Kiln

The basic elemachine to crush limestone htmlments of a would be the shell, the refractory lining, support tyres and rollers, drive gear and internal heat exchangers.

Kiln Shell

This is produced from rolled mild steel plate, ordinarily involving 15 and 30 mm thick, welded to type a cylinder which may well be as much as 230 m in length and as much as six m in diameter. This will likely be commonly situated on a east/west axis to stop eddy currents.

Upper limits on diameter are set from the tendency from the shell to deform beneath its personal weight to an oval cross section, with consequent flexure throughout rotation. Length just isn't necessarily restricted, however it becomes hard to cope with changes in length on heating and cooling if the kiln is extremely long.

Refractory Lining

The goal in the refractory lining is to insulate the steel shell from the substantial temperatures inside the kiln, and to safeguard it from the corrosive properties of your approach material. It may possibly consist of refractory bricks or cast refractory concrete, or may perhaps be absent in zones of your kiln that are beneath around 250C. The refractory selected depends upon the temperature inside the kiln plus the chemical nature on the material becoming processed. In some processes, like cement, the refractory life is prolonged by preserving a coating in the processed material about the refractory surface. The thickness from the lining is generally within the range 80 to 300 mm. A standard refractory will be capable of sustaining a temperature drop of 1000C or a lot more between its hot and cold faces. The shell temperature requirements to be maintained beneath about 350C as a way to guard the steel from harm, and continuous infrared scanners are applied to provide early warning of "hot(the machine is really a crushe rand ball mill )spots" indicative of refractory failure.

tyres and rollers

Internal heat exchangers

Heat exchange within a rotary...