What is a rotary furnace?
The rotary furnace, also called a rotary furnace, is a long tube that is used as a reactor of the continuous flow of the plug in the mineral industry. The mineral feed is introduced into a part of the reactor and is transported along the length of the tube, while the tube slowly rotates around its middle axis. The materials are mixed and heated. The original designs were applied to the calculation treatment in the production of Portland cement and in the extraction of mercury from ores. These reactors are often used to recover valuable metals.
A typical rotary furnace is made of a single sheet of steel wrapped in a cylinder with a diameter of about 3 ft to 6 ft (0.9 m to 1.8 m) and a length of about 30 ft to 60 ft (9.1 m to 18.3 m). In one common drive configuration, the tube is rolled on smooth stainless steel rings, which rest on two rotating stainless steel cylinders. There are usually more thermal zones. Heat can be applied through the discharge of hot gas from fuel or tpalivo can be fired directly into the tube. TransfoThe rumped product is selected after cooling in the cooling section, where the temperature and sent back to the combustion air.
screw conveyors or simple threaded rods can be used in a separate rotary furnace design, which requires more mixing. Another configuration consists of a reverberation design in which the material is shaken by the tube. The construction of the rotary furnace is modified by the tilting mechanism that allows the liquid metal to flow from the reactor. This design is very useful in extraction of ore metals or recycled materials such as copper, gold and mercury.
fuel is limited to fuel with a high energy content such as oil, gas or fluid coal because high temperatures are required. The high energy requirement to melt metals also explains the use of direct contact with the combustion flame in some designs. Complen gases are generally transmitted by countercurrent to the streammaterial. Controls include feed speeds, temperature zones and rotation speed. Many companies now provide complete systems that are customized or tailored to applications.
variation of the rotary furnace is a batch process that consists of a rotating vessel that is called on its side. The heat is supplied in the open space above the liquid. When the metal melts, the container is tilted and the metal is poured into molds. It is a common design for recycling of aluminum cans, because the cans are primarily aluminum and organic materials that can be burned during the melting process.