磁化复混肥料的磁化工艺及磁性稳定性研究

实验室条件下以粉煤灰、钢渣粉、选铁尾矿粉为磁性材料,研究了磁性材料的磁化性能、生产磁化复混肥的磁化工艺及肥料磁性的稳定性,并测定了磁化复混肥料的重金属含量。结果表明,磁化工艺以先造粒后磁化为佳;以选铁尾矿粉为磁性材料,在磁化场强为8 000 mT下磁化10 s生产的磁化复混肥料磁化效果最佳,且放置时间对肥料的磁感应强度影响弱;以三种磁性材料制成的磁化复混肥料的重金属含量均低于国家标准,使用安全。

Research on magnetization process and magnetization stability of magnetized compound fertilizer

Under laboratory conditions, with fly ash, steel slag powder, iron tailings powder as magnetic materials, the magnetic properties of three magnetic materials, magnetization technology of magnetization compound fertilizer and its stability of magnetizability are studied. The content of heavy metal in the three magnetization compound fertilizers are determinated. The results show that magnetization after granulation is preferred for magnetization process, and the magnetizing effect of choosing iron tailings powder and steel slag powder are better than choosing fly ash. Fertilizers get a best magnetization when their magnetic field intensity of 8 000 mT for 10 seconds, furthermore the external magnetic and field placing time have a weak impact on magnetic induction. The heavy mental content of three magnetization compound fertilizers are lower than national standard, are safe to use.