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A method for efficiently extracting vanadium from vanadium-containing ores

An ore and high-efficiency technology, applied in the field of rare metal extraction, can solve the problems of complex production process, increased production cost and high production cost, and achieve the effects of simple production process, low production cost and improved yield

Active Publication Date: 2020-12-04
古丈祥丰建筑材料工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the direct acid leaching method is mainly used for the vanadium extraction by the full wet method, that is, the vanadium is directly leached by high-concentration sulfuric acid under high temperature and long-term leaching conditions, and the leaching rate is higher than that of the roasting method. Roasting is required, which fundamentally eliminates air pollution and is suitable for large-scale production; however, the above-mentioned direct acid leaching method has obvious disadvantages such as large amount of sulfuric acid, high production cost, and no economic feasibility.
In addition, there is an oxidizing acid soaking method to extract vanadium, which uses the oxidation of oxidants to oxidize the trivalent vanadium contained in stone coal and clay ore, which can increase the leaching rate of vanadium; however, two steps are required in the preparation process. Secondary oxidation process, resulting in complex production process and increased production cost

Method used

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  • A method for efficiently extracting vanadium from vanadium-containing ores
  • A method for efficiently extracting vanadium from vanadium-containing ores

Examples

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Effect test

Embodiment 1

[0027] A method for efficiently extracting vanadium from vanadium-containing ores, specifically comprising the following steps:

[0028] (1) Pretreatment: First crush the vanadium-containing stone coal to a particle size of less than 1 cm, then add it to a ball mill, and then add 20% sulfuric acid solution to the ball mill according to the solid-to-liquid mass ratio of 1:1 for ball milling. Obtain an acidic mixed material with a particle size of less than 0.15mm;

[0029] (2) Leaching: Add potassium permanganate to the above-mentioned acidic mixture according to the mass ratio of 50:2, then react at 60°C for 5 hours, and obtain a vanadium-containing leaching solution through filtration and separation;

[0030] (3) Ion exchange: use a strong basic macroporous anion exchange resin to adsorb the vanadium-containing leaching solution, and then use a mixed solution composed of 8% NaOH and 4% NaCl to desorb, and prepare Obtain vanadium-containing eluent;

[0031] (4) Precipitation...

Embodiment 2

[0034] A method for efficiently extracting vanadium from vanadium-containing ores, specifically comprising the following steps:

[0035] (1) Pretreatment: First crush the vanadium-containing stone coal to a particle size of less than 1 cm, then add it to a ball mill, and then add 30% sulfuric acid solution to the ball mill according to the solid-to-liquid mass ratio of 1:1.2 for ball milling. Obtain an acidic mixed material with a particle size of less than 0.15mm;

[0036] (2) Leaching: Add potassium permanganate to the above-mentioned acidic mixture according to the mass ratio of 50:1, then react at 85°C for 2 hours, and prepare a vanadium-containing leaching solution through filtration and separation;

[0037] (3) Ion exchange: use a strong basic macroporous anion exchange resin to adsorb the vanadium-containing leaching solution, and then use a mixed solution composed of 9% NaOH and 4.5% NaCl by mass percentage to desorb, and prepare Vanadium-containing eluent;

[0038] ...

Embodiment 3

[0041] A method for efficiently extracting vanadium from vanadium-containing ores, specifically comprising the following steps:

[0042] (1) Pretreatment: first crush the vanadium-containing clay ore to a particle size of less than 1cm, then add it to a ball mill, and then add a sulfuric acid solution with a mass percentage of 28% to the ball mill according to the solid-to-liquid mass ratio of 1:1.3 for ball milling. Obtain an acidic mixed material with a particle size of less than 0.15mm;

[0043] (2) Leaching: add hydrogen peroxide to the above-mentioned acidic mixture according to the mass ratio of 50:2.4, then react at 68°C for 4 hours, and obtain a vanadium-containing leaching solution through filtration and separation;

[0044] (3) Ion exchange: use a strong basic macroporous anion exchange resin to adsorb the vanadium-containing leaching solution, and then use a mixed solution composed of 9% NaOH and 4.5% NaCl by mass percentage to desorb, and prepare Vanadium-containing...

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Abstract

The invention discloses a method for efficiently extracting vanadium from vanadium containing ore. The method comprises the steps of pretreatment, leaching, ion exchange, vanadium precipitation and post-treatment. According to the disclosed preparing method, the metal vanadium in the vanadium containing ore can be sufficiently extracted, and the extraction efficiency is high; a large amount of concentrated sulfuric acid does not need to be consumed in the preparing process, the high-temperature extraction process does not need to be conducted, and the production cost can be reduced; and meanwhile, the production technology can be simplified, and more excellent development prospects are achieved.

Description

technical field [0001] The invention relates to the technical field of rare metal extraction, in particular to a method for efficiently extracting vanadium from vanadium-containing ores. Background technique [0002] Vanadium is an important rare metal widely used in the production of alloy steel, non-ferrous metal alloys and catalysts in the chemical industry, and the main source of vanadium is vanadium ore resources. In my country's vanadium ore resources, stone coal and vanadium-containing clay ore are very important parts. The total vanadium reserves in stone coal and vanadium-containing clay ore are 7 times the total vanadium reserves in vanadium-titanium magnetite, exceeding other countries in the world. The sum of the reserves of vanadium pentoxide in various countries, the widely distributed vanadium-containing stone coal and clay vanadium ore in China are important raw materials for vanadium extraction. The traditional process of extracting vanadium from stone coal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B34/22C22B1/00C22B3/08C22B3/42C22B3/24C22B3/44
CPCC22B1/00C22B3/08C22B3/24C22B3/42C22B3/44C22B34/22Y02P10/20
Inventor 颜文斌蔡俊华骏高峰
Owner 古丈祥丰建筑材料工程有限公司
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