Lead Ore is an important ore minerals refined lead, lead is blue-gray metal, the new fracture with brilliant metallic luster. The solid state density is 11.35 g / cm 3, a melting point of 327.4 ℃, boiling point of 1525 ℃, pure lead metal is the most flexible, Mohs hardness of 1.5. Lead has good malleability, ductility but very small, intolerant tension. Very low thermal conductivity of lead, equivalent to 7.5% of silver, conductivity is very poor, and only 7.77% of silver.
Lead with high chemical stability, in dry air at room temperature when no chemical changes. Lead soluble in dilute nitric acid, sulfuric acid at room temperature and hydrochloric acid insoluble lead. Hydrochloric acid and sulfuric acid at room temperature only role and lead surfaces, as PbCl2 and PbS04 generated virtually insoluble, attached to the lead on the surface of the internal metal from corrosion. Lead and alkali, ammonia, chlorine solution and organic acids, esters are not react.
Because lead is acid and alkali corrosive nature, wider use, if we can use him to manufacture various components of chemical equipment, metallurgical plant cell, communication cable sheathing materials, as well as doing batteries, etc.; also be made Babbitt alloy I-lead bearing alloy of lead can absorb radioactive rays, it is used X-ray industrial and nuclear industry, lead compounds used in paints, ceramics, glass, rubber, petroleum refining and other industries can be used for solder, printed alloy.
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