介绍了一种新的动筛型跳汰机 ,它采用锯齿形跳汰周期 ,可使矿粒在整个跳汰室中实现自然跳汰过程 ,在跳汰机中创造了对分选矿粒没有水平作用力的悬浮状态 ,跳汰机仅仅恢复矿粒的势能 ,矿粒的沉降是在静止的水介质中重力作用下发生。有用细矿粒被夹带到尾矿中的可能性小 ,有用矿物的回收率高 A new kind of moving sieve jig is introduced, which adopts jigger jig cycle, which can make the natural jig to realize natural jig in the whole jigging chamber. In the jig, there is no level Force of the suspension state, the jig only to restore the potential energy of mineral particles, the settlement of mineral particles in the static water medium under the action of gravity. Useful fine ore particles are less likely to be entrained in the tailings and have high recovery rates of useful minerals