What is a dome furnace?

Coupola Pec is a cylindrical device that is used to heat and melt metals such as iron and bronze. These explosive furnaces are usually between 1.5 and 13 feet (about 0.5 to four meters) in diameter and have an external appearance of the chimney. In order to control the dome furnace, the cylinder is usually filled with alternating layers of metal and coke and can also be added materials of flow such as lime or carbon accessories. When the metal melts, it flows down and can be released from knocking on the front of the furnace. After running, these furnaces can be emptied and ready for future use by opening the landfill at the bottom to remove the remaining coke and other materials. During the Chunqiu period, timely examples of dome furnaces were used in the cast of bronze. Since the 17th century, dome furnaces in Europe were also used. It was not until the middle of the 20th century the dome of the furnace remained by the primary method of casting iron. Most foundry eventually switched to induction furnaces, although domes are still used in some cases.

When a furnace is used, it is usually referred to as a campaign. At the beginning of the campaign, Coke is placed in the furnace and then ignited. The ports called Tuyeres are used to introduce air into a burning coke that creates a type of blast furnace. The introduction of air into the coke results in a very hot, when the metal can be set in the furnace. Other coke layers are added so that the heating process continues, and lime or other fluxing substance can be added to reduce oxidation.

Heat from the lower layers of the burning coke usually rises over the cylinder, heats the upper layers of the metal and melt them. Cokel carbon can connect the wicked metal as it passes through the bottom layers and pools on the bottom. In some cases, accessories such as silicon carbide can be added to increase the carbon content. After a sufficient amount of molten metal at the bottom of the dome furnace, the operator can open a pin that releases it into the collection vessel. The back of the device is usually DaLies at higher points that can drain slag materials.