Molecular formula: Pb(NO3)2

Relative molecular weight: 331.20

Properties: White cubic crystals or monoclinic crystals. Relative density 4.53 (20℃). Soluble in water, liquid ammonia, hydrazine, slightly soluble in ethanol. Insoluble in concentrated nitric acid, solubility in water is 56.5g/100g water (20℃). Dry lead nitrate decomposes at 205-223℃, and wet lead nitrate begins to decompose at 100℃, first forming basic lead nitrate Pb(NO3)2.PbO, and then converting to lead oxide when heated. It is a strong oxidant and can cause combustion when in contact with organic matter. Toxic!

Application: 

The role of adding lead nitrate in pre-leaching pretreatment of gold ores containing high levels of impurity sulfides and secondary sulfides such as copper, arsenic, and sulfur. Adding lead nitrate before leaching can reduce the content of soluble metal ions in the pulp, thereby reducing the consumption of sodium cyanide. As the interfering ions in the pulp are reduced, the opportunities for the formation of gold and cyanide complexes increase, and thus the probability of increasing the leaching rate of gold also increases. In the molecular structure of pyrrhotite, there is a sulfur atom that is not firmly bound and is easily oxidized to form soluble sulfides. A large amount of cyanide is consumed during the cyanide leaching process. Prolonging the pretreatment time and adding lead nitrate can reduce the presence of sulfur ions in the pulp and precipitate some soluble sulfides, thereby reducing the consumption of sodium cyanide and improving the leaching rate.

Specification:

Content: more than 99%

Copper: less than 0.005%

Iron: less than 0.002%

Water-insoluble matter: less than 0.05%

Nitric acid: less than 0.2%

Water: less than 1.5%

Note: can be produced according to user requirements

Packaging: 25/1000 kg bag.