Adopt the special developed resistance heat cover for baker & Start-up, this cover can be used again and again.The heating cover is composed of insulation cover shell, the electric heating body, bracket parts, etc. When dry the refractory, melt zinc, change inductor, the pot does not formally work., so the cover need not the separate power supply , directly adopts the inductor power, and connect to the link-copper bar inside the electric cabinet for expediently convert. Because it takes a long time to bake, generally more than half-month, and requires rigid temperature, so the resistance heat cover can bake in term of temperature rising curve, attain good temperature uniformity and convenience, save labour, security. Compare with the way of fuel oil & fuel gas baking, the resistance heat cover has many outstanding advantages.