1,Purpose:thermal insulation and refining of aluminum and its alloy; 2,Form: fixed rectangular, rectangular hydraulic tilting-type; 3,Volume: 10 50t; 4,Operating temperature in furnace: 900--1000oC; 5,Tapping temperature of aluminum liquid: 720--760oC; 6,Tapping temperature difference of aluminum liquid: ≤±3 oC(at the end of refining and mixing); 7,Fuel Type: Type of fuel: Electricity Natural gas Diesel oil Liquefied gasTown gas; 8,Max. dip angle of tilting-type heat holding furnace: 30oC; 9,Furnace temperature control: SCR is adopted for controlling electric resistance furnace. Furnace temperature and aluminum liquid temperature can be controlled, displayed and recorded automatically. If it adopts gas or oil as heating materials, the size of fire can be controlled automatically for controlling furnace temperature and continuously measuring and displaying aluminum liquid