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

A wastewater circulation and ammonia gas technology, applied in the direction of process efficiency improvement, vanadium oxide, vanadium compounds, etc., can solve the problems of ammonia gas discharge, complex vanadium extraction process procedures, environmental pollution of rivers and lakes, etc., and achieve the goal of ensuring zero discharge of wastewater Effect

Inactive Publication Date: 2018-12-25
ZHONGFANLIAN TECH DEV CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 produce

Method used

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

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Embodiment Construction

[0027] The present invention will be further described through exemplary embodiments below, but these examples do not limit the scope of the present invention, and all materials based on the technology realized by the above content of the present invention all belong to the protection scope of the present invention.

[0028] 1. Starting from mining and smelting, the "one-step method" can be made into ammonium metavanadate (NH 4 VO 3 ) and ammonium polyvanadate (NH 4 )2V 6 o 16

[0029] The crude vanadium ore is leached to obtain sodium vanadate concentrate (according to different processes, different crude vanadium content, different content is prepared) to make ammonium metavanadate (NH 4 VO 3 ) and ammonium polyvanadate (NH 4 )2V 6 o 16 . The process flow is generally:

[0030]

[0031] 1. Vanadium ore. Vanadium (V) containing vanadium slag, vanadium mud or vanadium containing coal gangue.

[0032] 2. Mineral dressing. Choose to remove other impurities other ...

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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 ...

Claims

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Application Information

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IPC IPC(8): C01G31/02C01G31/00C01C1/28C02F1/54
CPCC01C1/28C01G31/00C01G31/02C02F1/54C01C1/026C22B34/22C22B3/08C22B3/14
Inventor 许小弟李益和万伟勋
Owner ZHONGFANLIAN TECH DEV CO LTD
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