Preparation of cupric nitrate solution

Abstract

The invention provides a method for preparing a cupric nitrate solution, which comprises the following steps: putting metal copper inside a pressure-proof and nitric acid corrosion-resistant container, and introducing industrial pure oxygen to perform the dissolving reaction of metal copper at a reaction temperature of between 20 100 DEG C and 100 DEG C with a reaction pressure between 0.05 MPa and 0.5 MPa. The nitric acid for reaction is between 1 mol / L and 14 mol / L. The amount of copper for reaction is larger than the amount calculated by the chemical equation and the reaction lasts for 1 to 10 hours.

Description

technical field [0001] The invention relates to a preparation method of copper nitrate solution. Background technique [0002] Copper nitrate solution is a feed solution for preparing copper nitrate reagent and copper oxide. Copper nitrate is widely used as a raw material for relatively pure copper oxide and other copper salts, and is also used for copper plating, fabric dyeing, medicine, fungicides, wood preservatives, herbicides, pigments, pyrotechnics, catalysts, phosphor activators and photosensitive Resistive materials and other fields. Copper oxide is widely used in glass, ceramics, enamel, dyes, rayon, oil desulfurization, paint anti-wrinkle, artificial gemstones and catalysts and other fields. At present, the copper nitrate solution is mainly prepared by dissolving metallic copper and other copper-containing materials with nitric acid. This method not only consumes a lot of nitric acid, but also produces a large amount of nitrogen oxide pollutants. The subsequent ...

AI Technical Summary

Problems solved by technology

This method not only consumes a lot of nitric acid, but also produces a large amount of nitrogen oxide pollutants. The subsequent pollution control is difficult and expensive.