Working Principles
Rotary kiln is composed of cylinder, gears, support device, kiln and kiln tail sealing equipment, kiln hood and combustion head liner. Cylinder as heated pivoting part, made of high-quality carbon steel plate, is supported on the support device by tyre, and there is mechanical or hydraulic pressure catch wheel on the first or some gear in order to control the turning of cylinder. Gearing gyrates according to process-required rotating speed by ring gear in the middle of the cylinder. Because of the need of installation or maintenance, the bigger rotary kiln have auxiliary gears, which makes cylinder gyrate more slowly. To prevent cold air come in and dust overflow, the reliable kiln tail and head sealing equipment is installed on feed and discharge end. Rotary kiln is rotary cylinder equipment for burning various materials. It is widely used in economic fields. In cement industry, rotary kiln is the major equipment of raw cement into clinker burning; In chemical industry, rotary kiln can produce saleratus, burn phosphor fertilizer and barium sulphide, etc.; In metallurgy industry, it is used to produce aluminium hydroxide.
It can be used for drying many kinds of materials limestone, slag, coal powder, slag, clay stone. Its highest temperature can reach 1600-1700 degree. The working principle of rotary kiln: The kiln is a cylindrical vessel, inclined slightly to the horizontal, which is rotated slowly about its axis. The material to be processed is fed into the upper end of the cylinder. To read more click here: patrick matthews. As the kiln rotates, material gradually moves down towards the lower end, and may undergo a certain amount of stirring and mixing. Hot gases pass along the kiln, sometimes in the same direction as the material process (co-current), but usually in the opposite direction (counter-current).
The hot gases may be generated in an external furnace, or may be generated by a flame inside the kiln. Such a flame is projected from a burner-pipe which acts like a large bunsen burner. The fuel for this may be gas, oil or pulverized coal. We are capable of producing rotary secarropas, kilns, and stacks that meet toughest customer standards. Materials that our kilns and secarropas are used for include cement, aggregate, chicken feathers, coke, and pulp. Our secarropas and kilns may be easily integrated with other agencies to ease disposal or transition to another processing step.