Method for cleanly extracting vanadium pentexide from vanadium containing material

A technology of vanadium pentoxide and substance, applied in vanadium oxide and other directions, can solve the problems of secondary resource waste environment, no industrialization implementation, waste of vanadium ore resources, etc., and achieves short process flow, low production cost, and reduced energy consumption. Effect

Active Publication Date: 2010-06-09
河南龙宇钒业有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

The main disadvantages exposed in the production of this process are: 1. High requirements on the type of ore, only high-grade siliceous clay rock type soft ore that is easy to leach is used; 2. A large amount of HCl and Cl 2 3. The total recovery rate of vanadium is about 50%, and the waste of vanadium ore resources is serious
[0006] There are not many research reports on the methods of extracting vanadium from vanadium-containing industrial waste residues, and generally adopt a process route similar to that of extracting vanadium from ores, which also causes waste of secondary resources and environmental pollution
The process of truly eliminating or reducing pollution and achieving comprehensive utilization of resources has not yet been implemented industrially
[0007] Simple technological transformation or terminal treatment of traditional production processes cannot fundamentally deal with the crisis. Therefore, the fundamental way out for the development of vanadium production industry is to create a new clean process to eradicate pollution from the source, which can be applied to various low-grade complex ores and improve The recovery rate of vanadium, reducing energy consumption, and realizing the comprehensive utilization of valuable elements in the ore to reduce production costs are the key to the survival of the vanadium smelting industry, and are also the purpose of the present invention

Method used

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  • Method for cleanly extracting vanadium pentexide from vanadium containing material
  • Method for cleanly extracting vanadium pentexide from vanadium containing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Containing vanadium ore A, its composition is as follows (weight ratio): V 2 o 5 1.2%, SiO 2 76.3%, Al 2 o 3 6.7%, Fe 2 o 3 3.2%, FeO 2.6%, CaO 0.8%, K 1.0%, Na 0.6%, P 2 o 5 0.1%, other 7.5%.

[0036] The vanadium-containing ore A is crushed and wet-ground to 60-80 meshes, 120 kg (dry weight) is added to the standby filtrate 2 returned from the next stage, heated to 90-100° C., reacted for 3.5 hours, and filtered to obtain filtrate 3 and Filter cake 1; filter cake 1 is mixed with standby filtrate 1, heated to 95-100°C, reacted for 2 hours, filtered to obtain standby filtrate 2 and filter cake 2, standby filtrate 2 is used to react with raw ore, filter cake 2 and 6.8 kg Phosphoric acid, 42 kg of sulfuric acid and 100 kg of water were mixed, stirred and reacted at 100°C for 1 hour, filtered to obtain standby filtrate 1 and filter cake 3, filter cake 3 was washed as cement mixture, and standby filtrate 1 was returned to leach filter cake 2 .

[0037] Add 10...

Embodiment 2

[0042] Containing vanadium ore B, its composition is as follows (weight ratio): V 2 o 5 1.6%, SiO 2 16.3%, C 63.8%, Al 2 o 3 7.3%, Fe 2 o 3 1.2%, FeO 4.3%, CaO 0.8%, K 0.3%, Na 0.2%, other 4.2%.

[0043] Vanadium-containing ore B is crushed and wet-ground to 60-80 meshes, 120 kg (dry weight) is added to the standby filtrate 2 returned from the next stage, heated to 85-95°C, reacted for 4.5 hours, and filtered to obtain filtrate 3 and Filter cake 1; filter cake 1 is mixed with standby filtrate 1, heated to 95-100°C, reacted for 3 hours, filtered to obtain standby filtrate 2 and filter cake 2, standby filtrate 2 is used to react with raw ore, filter cake 2 and 8.3 kg Phosphoric acid, 36 kg of sulfuric acid and 100 kg of water were mixed, stirred and reacted at 100°C for 1 hour, filtered to obtain spare filtrate 1 and filter cake 2, filter cake 3 was washed and used as cement mixture, spare filtrate 1 was returned to leaching filter cake 2 .

[0044] Add 11 to 13 kilo...

Embodiment 3

[0049] Industrial waste C, its composition is as follows (weight ratio): V 2 o 5 4.2%, SiO 2 2 6.3%, Al 2 o 3 11.7%, Fe 2 o 3 0.2%, FeO 35.6%, CaO 10.8%, other 3.7%.

[0050] The industrial waste C is crushed and wet-milled to 60-80 mesh, 120 kg (dry weight) is added to the standby filtrate 2 returned from the next stage, heated to 80-90°C, reacted for 2.5 hours, and filtered to obtain filtrate 3 and filtrate Cake 1; filter cake 1 is mixed with standby filtrate 1, heated to 90-95°C, reacted for 1 hour, and filtered to obtain standby filtrate 2 and filter cake 2, standby filtrate 2 is used to react with industrial waste residue, filter cake 2 and 36 kg Phosphoric acid, 96 kg of sulfuric acid and 180 kg of water were mixed, stirred and reacted at 100°C for 0.5 hours, filtered to obtain standby filtrate 1 and filter cake 3, filter cake 3 was washed as cement mixture, and standby filtrate 1 was returned to leach filter cake 2 .

[0051] Add 18-21 kg of ammonium sulfate ...

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Abstract

The invention relates to a method for cleanly extracting vanadium pentexide from a vanadium containing material. The method is characterized in that: the vanadium containing material is milled by the wet method, and then mixed with a certain weight amount of sulfuric acid, vanadic acid, water, sulfuric acid or phosphoric acid salt having certain association; under conditions of set temperature and set time, performing three-stage reflux leaching reaction of the mixture; adding ammonia sulfate and reducing iron powder to reaction leach solution in sequence to obtain aluminum ammonium sulfate crystals and ammonium ferrous sulfate crystals respectively; adding sulfuric acid to the solution in which aluminum and iron are separated out, cooling the solution for crystallization to obtain vanadium sulfate acyl crystals, and returning the mother liquor to extract vanadium ores; performing the neutralization reaction of the vanadium sulfate acyl crystals and ammonia water to obtain a precipitate of vanadium hydroxide, and returning the solution of ammonia sulfate to precipitate the aluminum and iron; and calcining the vanadium hydroxide and oxygen gas at a high temperature of over 300 DEG C to obtain the vanadium pentexide. The method has the advantages of short process flow, less energy consumption, high vanadium yield, low production cost, environmental protection, and comprehensive utilization of valuable metallic elements in ores.

Description

technical field [0001] The invention belongs to the technical field of hydrometallurgy, and in particular relates to a method for cleanly and efficiently extracting vanadium pentoxide from vanadium-containing substances, and at the same time recovers valuable metal elements such as aluminum and iron contained in raw materials. Background technique [0002] Vanadium has many valuable physical and chemical properties and mechanical properties, so it is widely used in modern industrial technology. 80% to 85% of vanadium is used as an additive in the ferrous metallurgical industry to prepare special alloy steel; in the chemical industry, vanadium compounds are used as catalysts and cracking agents, and have been widely used in contact sulfuric acid manufacturing industry, petroleum refining and organic synthesis In industry, it is irreplaceable by any substance. [0003] Vanadium is abundant in nature, but its distribution is scattered and there is no separate deposit. It is re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G31/02
Inventor 杨仁春朱全中
Owner 河南龙宇钒业有限公司
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