Magnetite filter pipe big resistance to water distribution systems. In the three media generally and anthracite, quartz sand with, the better the ingredients are our current program. It belongs to the heavy media. Easy to mix backwash level, improve the supporting layer and the water system has a good ability to adapt is the essential multi-layer filter media. It is the filtration rate of up to 30-40 m / h, so the magnetite is an important filter media, which has an irreplaceable role in other media. Magnetite media is 40-60 magnetite ore from the iron content in the selection made. Moreover, its addition to iron, manganese, oxygen effect is very obvious. Technical indicators Analysis Project Test Data Analysis Project Test Data oxide (FeO2) 40% density of 4.6 g / c cm3 bulk density of 20-40% iron 2.8 g / c cm3 broken rate of 0.05% Mohs hardness of 6 degrees of porosity of 47% is not uniformity coefficient K80≤1.8