A certain iron oxide ore belongs to refractory iron ore,magnetized roasting process is one of the most effective methods to deal with such iron ore.The processing cost of shaft furnace magnetized roasting process is relatively high,and the shaft furnace cooling system is an important part of the processing cost of shaft furnace.Through the research on the cooling water speed of shaft furnace cooling system,water box girder scale and water box girder cooling water,etc,explore an efficient and energy-saving shaft furnace cooling system.