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Method for extracting vanadium from vanadium titano-magnetite smelting slag through roasting and ultrasonic leaching

A technology of vanadium-titanium magnetite and smelting slag, which is applied in the field of metallurgy and can solve problems such as large consumption of sulfuric acid

Inactive Publication Date: 2021-06-15
LIUPANSHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the curing temperature is controlled at 200°C, the amount of concentrated sulfuric acid should reach 120g / 100g of raw materials. Even if the curing temperature rises to 300°C, the amount of concentrated sulfuric acid should reach 35g / 100g of raw materials. The consumption of sulfuric acid in the whole leaching process is huge.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The method for extracting vanadium by roasting and ultrasonic leaching of smelting slag of vanadium-titanium magnetite specifically comprises the following steps:

[0033] (1) Crushing the vanadium-titanium magnetite smelting slag, drying, and ball milling until the particle size is 80-100 mesh and accounting for more than 90wt%, according to the solid-liquid mass ratio of 1g: 1ml in the ball mill, add a mass percentage of 15 % sulfuric acid solution;

[0034] (2) Add 0.02wt% additive (the additive in this example is a mixture of limestone and KCl, with a mass ratio of 1:1) and 0.3wt% hydrogen peroxide to the pretreated vanadium-titanium magnetite smelting slag, Roast at 600°C, hold for 0.5h;

[0035] (3) Add 0.1wt% ferric sulfate in the roasted material, mix evenly, wet the material with water, the addition of water is 8wt% of the vanadium-titanium magnetite smelting slag;

[0036] (4) Add 0.8wt% concentrated sulfuric acid to the material in step (3), ultrasonicate w...

Embodiment 2

[0038] The method for extracting vanadium by roasting and ultrasonic leaching of smelting slag of vanadium-titanium magnetite specifically comprises the following steps:

[0039] (1) Crushing the vanadium-titanium magnetite smelting slag, drying, and ball milling until the particle size is 80-100 mesh and accounting for more than 90wt%, according to the solid-liquid mass ratio of 1g: 1ml in the ball mill, add a mass percentage of 15 % sulfuric acid solution;

[0040] (2) Add 0.02wt% additive (the additive in this example is a mixture of limestone, NaF and KCl, with a mass ratio of 1:1:1) and 0.5wt% oxidant in the pretreated vanadium-titanium magnetite smelting slag Potassium permanganate, roasted at 650°C and kept for 0.5h;

[0041] (3) Add 0.2wt% potassium sulfate to the roasted material, mix evenly, and wet the material with water, and the addition of water is 10wt% of the vanadium-titanium magnetite smelting slag;

[0042] (4) Add 0.5wt% concentrated sulfuric acid to the ...

Embodiment 3

[0044] The method for extracting vanadium by roasting and ultrasonic leaching of smelting slag of vanadium-titanium magnetite specifically comprises the following steps:

[0045] (1) Vanadium-titanium-magnetite smelting slag is crushed, dried, and ball milled to a particle size of 80 to 100 mesh, accounting for more than 90wt%. During the ball milling process, the mass percentage of 30% sulfuric acid solution;

[0046] (2) Add 0.04wt% additive (the additive in this embodiment is a mixture of limestone, NaF and KCl, with a mass ratio of 1:1:1) and 0.4wt% oxidizing agent in the vanadium-titanium magnetite smelting slag after pretreatment Potassium permanganate, roasted at 700°C and kept for 0.2h;

[0047] (3) Add 0.2wt% ferrous sulfate in the roasted material, mix evenly, wet the material with water, the addition of water is 12wt% of the vanadium-titanium magnetite smelting slag;

[0048] (4) Add 0.25wt% concentrated sulfuric acid to the material in step (3), ultrasonicate for...

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Abstract

The invention discloses a method for extracting vanadium from vanadium titano-magnetite smelting slag through roasting and ultrasonic leaching, and relates to the technical field of metallurgy. The method for extracting the vanadium from the vanadium titano-magnetite smelting slag through roasting and ultrasonic leaching comprises the following steps that the vanadium titano-magnetite smelting slag is pretreated; an additive and an oxidizing agent are added into the pretreated vanadium titano-magnetite smelting slag, and roasting is conducted; sulfate is added into a roasted material, uniformly mixing is conducted, and the material is wet with water; and concentrated sulfuric acid is added, ultrasonic treatment is conducted for 1-2 h, solid-liquid separation is conducted, and leaching liquid and leaching residues are obtained. According to the method for extracting the vanadium from the vanadium titano-magnetite smelting slag through roasting and ultrasonic leaching, vanadium in the vanadium titano-magnetite smelting slag can be fully extracted through the pretreatment, roasting and ultrasonic extraction processes, the extraction rate is increased, the acid consumption is reduced, and the roasting temperature is reduced.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method for extracting vanadium by ultrasonic leaching of vanadium-titanium magnetite smelting slag roasting. Background technique [0002] my country's traditional vanadium ore extraction process is sodium chloride roasting-water leaching (or acid leaching) process, which not only produces a large amount of HCl, Cl 2 and other harmful gases, and the vanadium extraction wastewater will contain a large amount of salt, which will seriously pollute the environment. Aiming at the serious environmental pollution of the sodium roasting process, some scientific research institutions and production units have carried out a lot of research work on the vanadium extraction process and vanadium extraction technology in recent years, and proposed a series of improved vanadium extraction processes, such as salt-free roasting -acid leaching (or alkali leaching), calcification roasting-acid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/04C22B1/02C22B34/22
CPCC22B1/02C22B7/007C22B7/04C22B34/22Y02P10/20
Inventor 朱山马燕李松胡江良
Owner LIUPANSHUI NORMAL UNIV
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