Wet pan mill is widely used for selecting ferrous metals, nonferrous metals and nonmetals, as well as precious metals like gold and silver. It mainly consists of driving device, frame, water basin, grinding wheels and grinding base, etc. It grinds ores by wheel driving force: firstly, the power is transferred from the motor to the reducer, then to the horizontal shaft, and finally to the grinding wheel; the wheels then rotate anticlockwise. The wheels can revolve around the vertical shaft of the pan mill, at the same time; it can revolve on its own axis, while the grinding base will remain still. The ores are then pressed, rubbed and grinded repeatedly.
1. The grinding wheels mix up the ores and produce ore pulp while pressing and rubbing the ores.
2. The ores and water are evenly mixed, which makes the pulp density and other indexes stable.
3. After the grinding process, the monomers are taken to the upper surface of the pulp and discharged through the overflow outlet of the water basin. Meanwhile, the coarse ores sink to the bottom of grinding base, being grinded continuously till they reach the required fineness.
4. The screening mesh set up at the overflow outlet of the water basin classifies the ore fineness strictly to avoid the over-grinding and uneven fineness, which helps create better condition for next working process.