The electric heating filtration system combines the preheating of the filter plate, the preheating of the filter box, the electric opening and closing of the filter box sealing cover, and the aluminum liquid insulation function of the box to form an electric heating filtration system. This system effectively solves the problem of precision preheating for various types of filter plates and boxes. During the preheating process, it will not cause local overheating of the filter plate and generate surface and internal micro cracks, ensuring the safe and reliable filtration accuracy of the filter plate. Allowing the surface of the filter box to receive heat evenly and improving the service life of the box. At the same time, our company has designed a bipolar electric heating filtration scheme, which uses a 30 or 40 mesh filter plate at the front end and a 50 or 60 mesh filter plate at the back end, which can greatly improve the quality of aluminum alloy. At the same time, it can keep the box and aluminum liquid insulated, so that the filter plate can be reused 2-3 times according to the production status, greatly reducing the cost of use.