Wet-process production in the rainy season: how to prevent clogging and maintain output

Two things are most feared during rainy season production: material not discharging from the bin, and screen mesh blinding. Once a wet process line gets blocked, the entire line has to stop.

Solve the silo first

Sand and gravel with moisture content above 6% forms "rat holes" in the bin—it looks like there is material, but it won't flow down. In practice, three methods are the most straightforward:

• Polyethylene liners installed on the hopper inner walls cut the friction coefficient by half
• The discharge outlet uses an eccentric design so material flows on one side only
• Choose the SJ.Y.K series feeder: four-stage vibration accumulates material less than two-stage

Then solve the screen

Choosing a smaller aperture is a common mistake. For wet material it is the opposite—enlarge the aperture by 1.5 times, and rely on the material's own stratification to ensure classification accuracy.

In wet processing, classification accuracy depends 70% on screen surface inclination and 30% on aperture size.

For the sand washing and recovery stage of a wet process line, the dewatering screen must be designed together with the sand washer, seeSand washing and fine sand recovery.