The invention relates to an electrical
kiln used for firing a
cadmium red
glaze porcelain with three-meter height. The electrical
kiln comprises a furnace body and a base, wherein the furnace body is internally provided with a
hearth, a furnace shell is arranged outside of the furnace body, a first insulating layer is arranged between the furnace shell and the
hearth, and the inner side of the first insulating layer is provided with a first temperature-resistant layer; the base comprises a base shell, a second insulating layer and a second temperature-resistant layer, wherein the second insulating layer is arranged between the base shell and the second temperature-resistant layer, and the
hearth is internally provided with first heating resistance wires; the base is provided with second heating resistance wires, the first heating resistance wires are arranged on the middle part and the lower part in the hearth, and the first heating resistance wires count 50%-75% of the whole hearth space; and a spacing between every two wires of the first heating
resistance wire is 10-25 centimeters, and a spacing between every two wires of the second heating resistance wires is 10-30 centimeters. The electrical
kiln provided by the invention has the advantages that the structure is simple and compact, the distributing wire density is relatively large, the configuration is reasonable, the power
effective density is reasonable, the heat uniformity is good, the service life is long, and the application rang is wide.