The unique desigh for magnetic circuit and the magnetic source is made up from the NdFeb with high performance. Featuring with powerful magnetic forece and high efficiency for tramp iron-elimination, it can be widely arranged in the lines such as grinding,fire-proofmaterial,foodstuff,feed,buildingmaterial,ceramics,raw material for glass, renewable rubber powder, PVC powder, quartz sand,and chemical industry and so on. Feeding capacity can be adjusted to meet the different granularity requirement. It is characteristic with exempt-maintenance,energy saving, cost-lower,safety and reliability.