What Is an Electric Smelting Furnace?
An electric furnace is a metallurgical furnace that uses the effect of electricity to heat. An electric furnace using Joule heat generated by a current passing through a conductor as a heat source. According to the electric heating generation method, the electric heating furnace is divided into two types: direct heating and indirect heating. In the direct heating electric heating furnace, the current passes directly through the material. Because the electric heating power is concentrated in the material itself, the material is heated quickly, which is suitable for processes that require rapid heating, such as the heating of forging billets.
Electric heating furnace
Right!
- Chinese name
- Electric heating furnace
- Principle
- An electric furnace is a metallurgical furnace that uses the effect of electricity to heat. An electric furnace using Joule heat generated by a current passing through a conductor as a heat source. According to the electric heating generation method, the electric heating furnace is divided into two types: direct heating and indirect heating. In the direct heating electric heating furnace, the current passes directly through the material. Because the electric heating power is concentrated in the material itself, the material is heated quickly, which is suitable for processes that require rapid heating, such as the heating of forging billets.
- Electric heating furnace
- In 1947, the French scientist Trumby tried to use the reflector of a military searchlight on an electric furnace. In 1952, on the Pyrenees in Montlouis, Trumby built the world's first large-scale 75 kW power plant. Electric heating furnace, and performed a wonderful performance of melting high-melting metals for colleagues who came to Montlouis to participate in the solar energy academic society.
- The performance started, and I saw a special work table rising at a slow speed, lifting a handful of white powder to the focus of a large parabolic condenser. As soon as the white powder reached the focus, a dazzling white light flashed. Light, white powder is the raw material used to melt zirconium metal zirconium dioxide. At this time, it can be observed from the radiation pyrometer that the temperature at the focal point has reached above 3000 ° C. The visiting experts wore dark sunglasses and saw that the zirconia powder immediately melted into a small piece like a magma ejected during a volcanic eruption in a distant geological age. Suddenly, applause thundered, and Trumby's electric furnace was successful.
- Trang hopes to build a larger electric furnace. He chose the small town of Odello, 10 kilometers from Montlouis, and built a giant electric heating furnace with a power of 1,000 kilowatts in the 1970s. Odero was called the French city of the sun. This electric furnace built by Trambi is like an ultra-modern multi-storey building. On the hill opposite the building, dozens of surprisingly large mirrors are erected in a row, reflecting a beam of sunlight to A 50-meter-diameter parabolic condenser on an electric heating furnace. This condenser can be refocused to heat the collected sunlight to 3500 ° C. This solar furnace can produce 2.5 tons of zirconium per day. Its purity is higher than that of zirconium smelted in a general electric arc furnace.