磁力脱水槽是一种利用矿石的比重差和磁性弱的不同，及矿物干涉沉降的作用，使含铁矿物与脉石分离并能使矿物进行脱泥和浓缩的选矿试验室设备。本产品由原地矿部唯一指定企业生产，执行行业标准。

磁力脱水槽是用固体粒子的重力大小来选别有用矿物。为了加强选别效果而增设了磁力系统，使轻而细小的磁性有用矿物粒子受磁力作用而互相吸引，团聚成为大粒，从矿泥中选出，并在锥端磁场吸引下和粗粒的精矿一起迅速降落。这样不但达到了选别目的，而且强化了选别过程。

磁力脱水槽的外形与圆锥分极机很相似，其不同在于锥形箱上加设一套磁力系统，其外形如图所示。

矿浆由锥形斗1给入，通过锥形斗，经锥形铁芯2，并与由挡水板3流入的清水汇合而形成逆流，此时线圈产生磁力线通过外桶体4和锥形铁芯2的下端在锥形桶的底部造成较强的尖端磁场，由锥形斗下落的逆升的矿浆受到磁力吸引使较细的磁性矿粒团聚成大粒和重的粒子一起借重力沉降底部，并从排矿口5自然排出，轻而细小的弱磁性的微粒子则借上升水流作用，从桶体的上部排出至溢流槽而成为尾砂。

Magnetic Dewatering Tank is a lab. mineral processing facility by use of differences of specific gravity of minerals and weak magnetism and hindered settling action, allowing separation of iron bearing mineral from gangue and desliming and concentration of minerials. The product is made by the only manufacturer designated by the former Ministry of Geology and Mineral Resources, in compliance with the Industrial standards. 

Magnetic Dewatering Tank is to separate useful minerals using magnitude of gravity of solid particles. Addition of magnetic system to increase separation effect brings about mutual absorptions of useful light and fine minerals with the action of magnetic force and aggregates large size grains before being separate out from slimes and dropping rapidly together with coarse concentrates by absorption of conical end magnetic fields. Consequently, the objective of separation is achieved and the separation process strengthened.What is different is that a magnetic system is added on the conical box as shown in Fig.below:

The outline of Magnetic Dewatering Tank is similar with Cone Separator

Slurry is fed by Conical Hopper 1 and converged with fresh water from eliminator 3 through the conical hopper and conical iron core 2 to create counter flow and meanwhile, magnetic lines of force produced by coils develop strong tip magnetic fields at the bottom of the conical drum through the external cone 4 and the conical iron core at its lower end. Slurry of the counter flow dropped by the conical hopper is subject to magnetic force to aggregate fine and magnetic mineral particles with heavy grains in sedimentation to the bottom by gravity before being discharged naturally via Discharge Opening 5. The fine and weal-intensity magnetic microparticles are drained to Overflow Tank by the action of upward water flow through the upper cone as tailings.