The design and development of electric kilns have been continuously improved with the continuous enrichment of ceramic varieties. From the traditional kiln form to the modern indoor gas kiln and electric kiln, and from intermittent and semi-intermittent operation to continuous kiln (tunnel kiln) operation mode, all reflect the progress of kiln technology. The kilns commonly used in laboratories are mostly electric kilns. They use electricity as energy, and use resistance wires, silicon carbon rods or molybdenum disilicide (silicon molybdenum rods) as heating components, relying on the principles of electrical radiation and heat conduction to heat and burn samples.

Compared with fuel furnaces, the advantages of electric kilns include easy control of the atmosphere in the furnace, which can even be evacuated into a vacuum; fast material heating, high heating temperature, and easy temperature control; the production process is easier to achieve mechanization and automation; good labor and health conditions; high thermal efficiency; good product quality; and more environmentally friendly, which is conducive to alleviating increasingly serious environmental problems. 12