Magnetite media for a large resistance to water distribution pipe system, usually quartz sand and anthracite filter media and with the use of three-layer filter is a filter material necessary, mainly for improving the supporting layer and the water distribution system ability to have a good application, high strength, filter fast, easy backwashing when the mixed layer. In addition, it in addition to iron, manganese, fluoride effect is very obvious. 
 【Specifications】 (1) magnetite media project indicators density / g ? cm ≥ 4.5 clay content /% ≤ 2.5 size range / mm 0.25 ~ 0.5 (three) lower limit of particle size less than /% ≤ 3 greater than the maximum particle size /% ≤ 2 (2) magnetite project indicators supporting material density / g ? clay content ≥ 4.4 cm: diameter less than 2mm /% ≤ 2 size larger than 2mm /% ≤ 1 size range / mm 0.5 ~ 1; 1 ~ 2; 2 ~ 4; 4 ~ 8 less than the lower limit of particle size /% ≤ 5 particle size greater than the upper limit /% ≤ 5 
 】 【Packaging and storage bags with a durable fabric, particle size less than o. 5mm in the magnetite media, should be added to pull up sleeves Bag, inner, net weight 40kg. To prevent the packaging is damaged, so as to avoid loss or mixed debris, media and supporting materials should not be stacked together, along with other materials should not be stacked. . 
 【Uses】 for: Domestic water supply, industrial water supply, sewage treatment filtration purification. Magnetite layer media filter media is an essential material. It has a filtering speed, interception capability, long life cycle and so on. Magnetite media, spherical appearance, high mechanical strength, non-toxic and hazardous substances, the proportion of 4.5g/cm3, capacity 2.95g/cm3 British hardness 5.5-5.6. Magnetite filter pipe big resistance for the water distribution system. It is usually in the three anthracite filter media, with quartz sand, is good ingredients procedures, backwashing is not easy to hybrid, to improve the supporting layer and the water distribution system has good adaptability, is a multi-filter essential to the pool filter, the filtration rate of up to 30-40 m / time advantage. Therefore, magnetite is an important filter media products. The chemical composition of magnetite, Fe3O4, equiaxed crystal is the Department of oxide minerals, the crystal often has octahedron and rhombic dodecahedron, or a massive collection of grainy. Octahedral crystals were well shaped or rhombic dodecahedron, rhombic dodecahedron was, the diamond surface parallel to the crystal surface is often a long diagonal stripes. A compact block or granular aggregates. Color iron black, black streak, metallic luster or semi-metallic luster, opaque, no cleavage, Mohs hardness 5.5-6, specific gravity 4.8-5.3. Because it has a strong magnetism, also known as Tsz ancient Chinese stone, magnets, Kuroishi. Is the strongest magnetic minerals, can be a permanent magnet, the ancient Chinese compass, "Ian" is made to use this feature. Oxidized into hematite or limonite.