the chemical or physical separation methods used in gold mining
Lead is a chemical element with the symbol Pb (from the Latin plumbum) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point.When freshly cut, lead is silvery with a hint of blue; it tarnishes to a dull gray color when exposed to air. Lead has the highest atomic number of any stable element
Onte Machinery is an enterprise specializing in the production of
various crushing, sand making, grinding, mineral processing
and building materials products. After 40 years of development,
it has become the production and export base of China's mining machinery industry.