lead zinc mine

Lead is one of the earliest metals extracted from lead-zinc ores. It is one of the softest heavy metals and one of the metals with the highest specific gravity. It has a blue-gray color, a hardness of 1.5, a specific gravity of 11.34, a melting point of 327.4℃, a boiling point of 1750℃, good ductility, and is easy to make alloys with other metals (such as zinc, tin, antimony, arsenic, etc.).

Zinc is a metal extracted from lead-zinc ores relatively late. It is the last of the seven ancient non-ferrous metals (copper, tin, lead, gold, silver, mercury, zinc). Zinc metal has a blue-white color, a hardness of 2.0, a melting point of 419.5℃, a boiling point of 911℃, and has good compressibility when heated to 100-150℃. The specific gravity after rolling is 7.19. Zinc can be made into alloys or zinc-containing alloys with a variety of non-ferrous metals, the most important of which is brass composed of zinc and copper, tin, lead, etc. It can also be formed into die-casting alloys with aluminum, magnesium, copper, etc.