Rotary kilns systems have evolved considerably in form and complexity over the last 120 years, but the kilns themselves have certain common features. Hengyang Industry specialized in design, produce and install rotary kiln projects.

The shell of the kiln is made of mild steel plate. Mild steel is the only viable material for the purpose, but presents the problem that the maximum temperature of the feed inside the kiln is over 1400°C, while the gas temperatures reach 1900°C. The melting point of mild steel is around 1300°C, and it starts to weaken at 480°C, so considerable effort is required to protect the shell from overheating.

Rotary Kiln Application

Rotary kiln is a rotating cylindrical vessel which is used for drying, calcination and sintering in a continuous process with the use of hot gases. The hot gases may be generated in an external furnace or by a flame inside the kiln. Dajia rotary kiln and sponge iron rotary kiln has been developed for performing drying, calcination and sintering work in a continuous process. Widely used for cement, pet coke calcination, dolomite, bauxite, sponge iron and other materials, it uses hot gases for the operation. Integrated with variable speed drive, process automation and instrumentation, this kiln ensures optimum operational control. In addition to technology, its design features better inlet and outlet sealing to ensure minimum false air entry.