The sucker in the coal preparation plant can't absorb iron powder.

The magnetic force of the sucker is insufficient, the particle size of iron powder is too small, and the sucker is blocked.

1, the magnetic force of the sucker is insufficient: the sucker in the coal preparation plant adopts magnetic adsorption, so the sucker itself is not magnetic enough to effectively adsorb iron powder. You can consider replacing or strengthening the sucker with stronger magnetic force.

2. The particle size of iron powder is too small: the particle size of iron powder is very small, which is smaller than the dust suction diameter of coal preparation plant, and it is difficult to completely extract it even if it has strong enough ventilation ability. In this case, we can try to use materials suitable for handling fine particles or adjust equipment parameters to improve the trapping effect of fine particles.

3. Enable blocking: The reason for the problem is that the pipes, rollers and other components used by the car washing robot are loose and fall off, resulting in cement floating stains blocking the drainage holes and conveyor belts.