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Magnesium refining process in titanium sponge production process

A production process, sponge titanium technology, applied in the field of magnesium refining, to achieve the effect of reducing distillation time, improving turnover efficiency, and reducing reduction time

Pending Publication Date: 2022-08-09
云南国钛金属股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention discloses a magnesium refining process in the production process of sponge titanium, and intends to solve the problem mentioned in the prior art that the existing method does not involve the refining of electrolyte magnesium, and magnesium, magnesium chloride and impurities are separated and cannot be directly entered into a reduction furnace. Technical issues used

Method used

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  • Magnesium refining process in titanium sponge production process

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Effect test

Embodiment 1

[0028] see attached figure 1 As shown, a refining process of magnesium in the production process of sponge titanium, the specific process flow is as follows:

[0029] Step 1: in the production process of sponge titanium, the reduction liquid magnesium and reduced magnesium chloride produced in the reduction furnace after the reduction of the sponge titanium is completed are respectively transported to the first refining furnace and the second refining furnace;

[0030] Step 2: input the purchased magnesium ingots into the smelting furnace for smelting treatment, the smelting temperature is 651 ° C, and then stand for 4 hours, and after the standing is completed, add the standing magnesium to the first refining furnace;

[0031] Refining the reduced magnesium chloride through the second refining furnace, the refining temperature is 700°C, and the refining time is 4 hours, to obtain refined magnesium chloride; electrolyze the refined magnesium chloride to obtain electrolytic cru...

Embodiment 2

[0037] see attached figure 1 As shown, a refining process of magnesium in the production process of sponge titanium, the specific process flow is as follows:

[0038] Step 1: in the production process of sponge titanium, the reduction liquid magnesium and reduced magnesium chloride produced in the reduction furnace after the reduction of the sponge titanium is completed are respectively transported to the first refining furnace and the second refining furnace;

[0039] Step 2: input the purchased magnesium ingots into the smelting furnace for smelting treatment, the smelting temperature is 700 ° C, and then stand for 3 hours, and after the standing is completed, add the standing magnesium to the first refining furnace;

[0040] The reduced magnesium chloride is refined through the second refining furnace, the refining temperature is 720 ° C, and the refining time is 3 hours to obtain refined magnesium chloride; the refined magnesium chloride is electrolyzed to obtain electroly...

Embodiment 3

[0046] see attached figure 1 As shown, a refining process of magnesium in the production process of titanium sponge, the specific process flow is as follows:

[0047] Step 1: in the production process of sponge titanium, the reduction liquid magnesium and reduced magnesium chloride produced in the reduction furnace after the reduction of the sponge titanium is completed are respectively transported to the first refining furnace and the second refining furnace;

[0048] Step 2: input the purchased magnesium ingots into the smelting furnace for smelting treatment, the smelting temperature is 680 ° C, and then stand for 3.5 hours, and after the standing is completed, add the standing magnesium to the first refining furnace;

[0049] Refining the reduced magnesium chloride through the second refining furnace at a refining temperature of 710°C and a refining time of 3.5 hours to obtain refined magnesium chloride; electrolyzing the refined magnesium chloride to obtain electrolytic c...

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Abstract

The invention belongs to the technical field of magnesium refining, and particularly relates to a magnesium refining process in a titanium sponge production process, which comprises the following steps of: 1, respectively conveying reduction liquid magnesium and reduction magnesium chloride generated after reduction in the titanium sponge production process into a first refining furnace and a second refining furnace; 2, refining the magnesium ingot and reduction liquid magnesium to obtain refined magnesium; refining the reduced magnesium chloride through a second refining furnace to obtain refined magnesium chloride; electrolyzing the refined magnesium chloride to obtain electrolytic crude magnesium, and refining the electrolytic crude magnesium to obtain refined magnesium; 3, the refined magnesium is input into a reduction furnace; according to the invention, magnesium chloride and magnesium after the reduction reaction are refined, continuous circulation of condensed magnesium and magnesium chloride and continuous enrichment of impurities are avoided, the impurities in sponge titanium are greatly reduced, and distillation is performed after discharging, so that the distillation time can be greatly shortened, the melting process of condensate in the reduction process is avoided, the reduction time is shortened, and the production efficiency is improved. Therefore, the production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of refining magnesium, and in particular relates to a refining process of magnesium in the production process of titanium sponge. Background technique [0002] At present, the production of titanium sponge at home and abroad adopts the magnesium thermal reduction method. Magnesium is one of the most important raw materials for the production of titanium sponge by the magnesium thermal method. The quality of the finished product has a big impact. The sources of magnesium in the generation process are electrolyte magnesium, distilled magnesium and magnesium ingots, and the impurities mainly contain Si, MgO, Fe, Al, Mn, MgCl 2 , Ni and Cr, etc., there will still be residual electrolyte in the electrolyte magnesium, the continuous circulation of distilled magnesium leads to the enrichment of impurities, and the surface of magnesium ingots has magnesium oxide, which will affect the quality of sponge titanium. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B5/04C22B34/12C22B26/22C25C3/04C22B9/10
CPCC22B5/04C22B34/1272C22B26/22C25C3/04C22B9/10Y02P10/20
Inventor 毕福丽和奔流刘红星李建军刘峰祝永红张美杰
Owner 云南国钛金属股份有限公司
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