Process for recycling ammonia gas for vanadium preparation to prepare ammonium and recycling wastewater

Abstract

The invention discloses a process for recycling ammonia gas for vanadium preparation to prepare ammonium and recycling wastewater. Conventional vanadium extraction processes are complex in procedure and most difficult in control of ammonia gas emission and wastewater treatment. By the process, ammonium metavanadate and ammonium polyvanadate can be directly extracted starting from mining and smelting; in the process of using ammonium metavanadate or ammonium polyvanadate to prepare high-purity vanadium pentoxide, all discharged ammonia gas can be bundled to prepare ammonium for use, so that zero emission of waste gas is realized; polyacid ester flocculation technology is adopted, all wastewater generated in the above process is effectively treated, so that zero emission and recycling of wastewater are ensured, and purity of all products reaches 99.5-99.99%.

Description

technical field [0001] The invention belongs to the technical field of vanadium production technology, and in particular relates to a process for vanadium production, ammonia gas recovery, ammonium production and waste water recycling. Background technique [0002] Vanadium is widely used in iron and steel, non-ferrous metals, chemicals, alloys, superconducting materials, automobile industry and other fields, and is an important strategic material. [0003] The distribution of vanadium in nature is extremely dispersed, and it usually exists in the form of V(Ⅲ) and V(Ⅳ), among which V(Ⅲ) accounts for the majority, and trivalent vanadium can enter the silicate mineral lattice in the form of homogeneous phase. At the same time, tetravalent vanadium can also exist in the silicon-oxygen tetrahedral structure in the homogeneous form. This kind of ore is difficult to leach. To leach trivalent or tetravalent vanadium, the crystal structure must be destroyed to release the vanadium ...

AI Technical Summary

Problems solved by technology

The traditional process of vanadium extraction is complicated, and the most difficult to control and deal with is ammonia discharge and wastewater treatment

If the ammonia gas and waste water produced in the above process are not treated technically, it will not only waste resources, but also cause environmental pollution to rivers and lakes, and even cause harm to human drinking water sources.

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