Much of the value that comes from gold is due to the scarcity of the metal Research suggests that if you added up the worlds holdings of gold throughout all of history you would only get about 120000 metric tons And to understand how gold is still scarce today consider that every year the worlds supply of gold increases 2000 tons.
Jaw crusher is the vital equipment in crushing industry.Detail
Roll crusher (roller crusher) is suitable for the fine crushing of the materials with feeding size less than 110mm, and finished particle size 3-30mm.Detail
Sand maker is also known as impact crusher or sand making machine.Detail
Ball mill is the vital equipment for recrushing after being crushed.Detail
Circular vibrating screen is mainly used to screen the dry materials used for metallurgy, coal, ore, etc.Detail
Raymond mill is also known as Raymond, Raymond machine.Detail