Device and method for preparing metal vanadium from vanadium alloy

A vanadium alloy and metal technology, applied in the field of devices for preparing metal vanadium, can solve the problems of high cost, poor plasticity, low content of vanadium chloride, etc., and achieve the effect of increasing the content

Pending Publication Date: 2022-05-24
承德钒钛新材料有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation methods of metal vanadium mainly include calcithermal reduction method and chloride magnesia thermal reduction method. In the preparation process of the intermediate product vanadium chloride, there are problems such as difficulty in passing chlorine, unstable chlorine gas, and low content of the prepared vanadium chloride. At the same time, the prepared vanadium contains interstitial elements carbon, oxygen, nitrogen, and hydrogen, and has poor plasticity. It needs further purification and refining to obtain metal vanadium with better purity. The preparation process is complicated and the cost is high.

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  • Device and method for preparing metal vanadium from vanadium alloy
  • Device and method for preparing metal vanadium from vanadium alloy

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Embodiment 1

[0056] The present embodiment provides a device for preparing metal vanadium from vanadium alloy, and the device is used for preparing vanadium chloride by reacting vanadium alloy with chlorine gas and preparing vanadium metal by electrolysis of vanadium chloride, and the device includes:

[0057] The heating furnace includes a furnace body and a furnace cover, and the furnace cover is provided with a first through hole communicating with the furnace body;

[0058] The graphite crucible and the corundum crucible, wherein the inner wall of the graphite crucible is provided with a support ring, the corundum crucible is arranged on the support ring, and the distance between the corundum crucible and the side wall of the graphite crucible is controlled at 3cm, the bottom distance is 2cm, and the bottom of the corundum crucible is provided with a second The through hole, specifically, the diameter of the graphite crucible is 18cm, and the height is 22cm, and the diameter of the coru...

Embodiment 2

[0065] The present embodiment provides a method for preparing metallic vanadium from vanadium alloy, which is prepared with the device in embodiment 1, including the following steps:

[0066] Step 1. Put the graphite crucible into the heating furnace body, add 200g chloride to the graphite crucible, place the corundum crucible in the graphite crucible, add 200g and 800g of vanadium alloy particles between the graphite crucible and the corundum Heating and melting at 650°C to obtain a first mixture, wherein the particle size of the vanadium alloy is 0.8-1.2 cm, and the chloride is a mixture of potassium chloride and lithium chloride with a mass ratio of 1:1;

[0067] Step 2, insert the corundum tube into the second through hole of the corundum crucible, and pass chlorine gas into the first mixture through the corundum tube, and control the pressure of the chlorine gas to be 0.20MPa, the flow rate is 5NL / min, and the time is 2.5h. to obtain a second mixture;

[0068] Step 3. Pu...

Embodiment 3

[0071] The present embodiment provides a method for preparing metallic vanadium from vanadium alloy, which is prepared with the device in embodiment 1, including the following steps:

[0072] Step 1. Put the graphite crucible into the heating furnace body, add 200g chloride to the graphite crucible, place the corundum crucible in the graphite crucible, add 200g and 800g of vanadium alloy particles between the graphite crucible and the corundum Heating and melting at 630° C. to obtain a first mixture, wherein the particle size of the vanadium alloy is 0.8-1.2 cm, and the chloride is a mixture of potassium chloride and sodium chloride with a mass ratio of 0.8:1;

[0073] Step 2, insert the corundum tube into the second through hole of the corundum crucible, and pass chlorine gas into the first mixture through the corundum tube, and control the pressure of the chlorine gas to be fed into 0.15MPa, the flow rate is 5.5NL / min, and the time is 2.5h, preparing a second mixture;

[00...

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Abstract

The invention relates to the field of non-ferrous metal metallurgy, in particular to a device and method for preparing vanadium metal from vanadium alloy, in the process of preparing vanadium from the vanadium alloy, a gap between a second reactor and a first reactor is used for containing the vanadium alloy and molten chloride; the alundum tube penetrates through the furnace cover and the second reactor through the first through hole and the second through hole, and chlorine is introduced into a material between the second reactor and the first reactor through the alundum tube, so that the material between the two reaction tanks can be kept in a fluidized state in the reaction process; therefore, the chlorination rate of the vanadium alloy and the content of the prepared vanadium chloride are obviously improved. In the electrolysis process of the second reactor, the first reactor can be prevented from making direct contact with the cathode bar, namely the cathode and the anode, electrolysis failure is avoided, the effect of protecting the cathode bar is achieved, only electrolytic ions are allowed to migrate to the cathode through the second through hole to deposit products, other impurities making contact with the cathode are reduced, and the content of cathode impurities is remarkably reduced.

Description

technical field [0001] The invention relates to the field of non-ferrous metal smelting, in particular to a device and method for preparing metal vanadium from vanadium alloy. Background technique [0002] Metal vanadium has excellent properties such as high melting point, corrosion resistance, good nuclear properties, and easy processing and deformation. It is widely used in superconductors, alloy materials, refractory materials, fuel additives, and nuclear reactor protective materials. At present, the preparation methods of metal vanadium mainly include calcium thermal reduction method and chloride magnesium thermal reduction method. In the preparation process of intermediate product vanadium chloride, there are problems such as difficulty in passing chlorine, unstable chlorine gas, and low content of prepared vanadium chloride. At the same time, the prepared vanadium contains interstitial elements carbon, oxygen, nitrogen, and hydrogen, and has poor plasticity. It needs t...

Claims

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Application Information

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IPC IPC(8): C25C3/26C25C7/00C25C7/06C25C7/02C01G31/04
CPCC25C3/26C25C7/00C25C7/06C25C7/025C01G31/04Y02P10/20
Inventor 张苏新李兰杰李九江张娜王海龙刘倩倩杨丽丽
Owner 承德钒钛新材料有限公司
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