Ultrafine vertical mill is a widely used in the mining industry by densitometry errand valuable minerals and non-valuable rock mining process. The process can be conducted at particle sizes as coarse as 300 mm and as fine as 500 μm with high mining efficiency, depending on the liberation characteristics of the valuable minerals. Ultrafine vertical mill also referred to as heavy media mining. The ultrafine vertical mill can be used in the jewelry industry, because of the diamond body denser than rock, and may also be used in the iron ore industry, since hematite more dense than silica. In the coal industry, where the denseness of coal is less than silica, it can also be used ultrafine vertical mill.Working principle of ultrafine vertical mill technology The heavy medium mining process relies on a medium of specific density (specific gravity) that is between the density of the minerals targeted for mining. Once the minerals are submerged in the medium, the small density minerals float up, and the larger density minerals sink down.