The invention discloses an efficient energy-saving high-temperature electric furnace with a lifting furnace door and a full-
fiber hearth. Compared with a traditional electric furnace, the electric furnace has obvious innovation advantages in aspects such as structural design of a furnace body, selection of
hearth materials and
temperature control. The furnace door is arranged at the bottom of the electric furnace and controlled to rise and fall by a lead screw, calcined samples can be conveniently placed on the furnace door after the furnace door falls, loading capacity is high, the furnace door is excellent in tightness after the furnace door rises and is closed, and heat is not easily dissipated from a furnace mouth. By the aid of the multilayer graded temperature-resistant full-
fiber hearth, heat insulation performance is excellent, heat storage capacity is low, the energy-saving effect of the electric furnace is quite remarkable, the temperature is rapidly raised and reduced, a furnace roof does not easily collapse by the aid of unique
assembly structure design of the furnace roof, all sides of a heater are heated, temperature fields in the furnace are uniform, a
temperature control system is advanced and simple and convenient to operate, running
voltage, current, power,
electricity consumption and the like are displayed in a centralized manner by the aid of a PID (
proportion integration differentiation) intelligent
temperature control instrument and an intelligent power display instrument, the electric furnace has an over-current alarm function, and heating elements are low in load, long in service life and convenient to replace.