Horizontal furnace device for metal tantalum smelting

The horizontal furnace device comprises a furnace body, a furnace door, a movable frame, a reaction furnace, an electronic gun controller and an electronic gun, a vacuumizing device and a cooling device are arranged on the furnace door, a reaction tank used for stacking raw materials is arranged in the reaction furnace, and a smelting area is arranged at the position, located below the electronic gun, of the bottom of the reaction tank. The reaction tank is provided with a subsidence area close to the smelting area, cooling water pipes are arranged on two sides of the reaction tank in the reaction furnace, and the furnace body is provided with a crucible below the liquid outlet; feeding and liquid discharging are achieved by opening the furnace door, feeding and feeding device faults in the smelting process are avoided, the liquid outlet groove is formed in the position, located in the smelting area below the electronic gun, of the reacting furnace, metal tantalum liquid is drained into the crucible through t