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Method for infiltrating titanium in a new reactor for producing sponge titanium

A technology of reactor and titanium sponge, which is applied in the direction of metal material coating process, coating, solid diffusion coating, etc., can solve the problems of long treatment cycle, low efficiency of titanium infiltration, unsatisfactory effect of titanium infiltration, etc., and shorten production Cycle time and the effect of improving productivity

Active Publication Date: 2018-06-01
朝阳金达钛业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods have their own characteristics, they generally have the problems of low titanium infiltration efficiency, long treatment cycle, high cost, and unsatisfactory titanium infiltration effect, which cannot fully meet the requirements for the use of new reactors for sponge titanium production.

Method used

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  • Method for infiltrating titanium in a new reactor for producing sponge titanium

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Experimental program
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Effect test

Embodiment 1

[0022] With a diameter of φ1500mm and a height of 3200mm, the effective space volume is 4.725m 3 Take the new reactor as an example. After immersing the inner wall 7 of the newly made reactor with 8% dilute hydrochloric acid for 8 days, rinse the inner surface with clean water to reveal the metallic luster, and use compressed air to quickly dry the surface. Add 33075m to the reactor 3 (weight is 5.53 tons) magnesium chloride and 500kg magnesium ingot, assembles reactor. Start the vacuum pump to degas the reactor for 2 hours and then fill it with argon for protection; the purity of magnesium chloride is above 99%, and the purity of magnesium ingot is above 99.95% (need to meet the requirements of GB / T 13748.9-2005 standard).

[0023] Put the reactor 1 into the resistance furnace 2 with a crane, start to heat up, start to add titanium tetrachloride after 5 hours at 800°C constant temperature, the purity of the added titanium tetrachloride is more than 99.9% (need to meet the re...

Embodiment 2

[0025] Taking a new reactor with a diameter of φ1800mm and a height of 3400mm as an example, the effective space volume is 6.75m 3 Take the new reactor as an example. After soaking the inner wall of the newly made reactor with 10% dilute hydrochloric acid for 10 days, rinse the inner surface with clean water to reveal the metallic luster, and quickly dry the surface with compressed air. Add 4.72m to the reactor 3 (weight is 7.9 tons) magnesium chloride and 500kg magnesium ingot, assembles reactor. Start the vacuum pump to degas the reactor for 2 hours and then fill it with argon for protection. Among them, the purity of magnesium chloride is above 99%, and the purity of magnesium ingot is above 99.95% (need to meet the requirements of GB / T 13748.9-2005 standard).

[0026] Use a crane to load the reactor into the resistance furnace, start to heat up, and start adding titanium tetrachloride after a constant temperature of 800°C for 5 hours (need to meet the requirements of the...

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Abstract

The invention discloses a method for titanizing a novel reactor for producing titanium sponge. A titanizing agent is prepared from the following components: magnesium chloride, magnesium ingots and titanium tetrachloride. A titanizing method comprises the following steps: soaking the inner wall of a reactor in dilute acid at the room temperature for 7-10 days, washing, drying, adding liquid-state magnesium chloride, and heating to fuse, wherein fused liquid-state magnesium chloride is occupies 60%-70% of volume of the reactor, and the weight ratio of the magnesium ingots to magnesium chloride is 1 to (9-16); after feeding, rapidly assembling the reactor, carrying out degassing for 2-3 hours, and filling argon to protect; and maintaining the pressure of the reactor at 0.005MPa-0.015MPa and the temperature of a melt at 780-820 DEG C, continuously adding titanium tetrachloride at an adding speed of 150kg / h-200kg / h to gradually lower the reaction liquid level by virtue of discharged magnesium chloride, so as to form uniform titanized layers on the inner wall of the reactor from top to bottom. The method is simple, the titanizing effect is good, and the requirements of the production of the titanium sponge for the reactor are completely met; and iron elements and other impurities are not brought in, the continuity is good, and the reduction production can be directly carried out after titanizing, so that the furnace occupying cycle of a titanizing furnace is shortened.

Description

technical field [0001] The invention relates to the technical field of nonferrous metal smelting, in particular to a method for infiltrating titanium into a new reactor for producing sponge titanium. Background technique [0002] The new steel reactors for the production of titanium sponge need to be titanium-infiltrated before being put into use. If the titanium sponge produced without titanium-infiltration treatment, the product grade will be reduced due to the high iron index. During the reduction process, iron element has high solubility in liquid magnesium, and iron element dissolves into liquid magnesium, and after reduction reaction with titanium tetrachloride, it will enter sponge titanium and cannot be removed, resulting in lower product grade. In addition, during vacuum distillation, due to the high temperature close to 1000°C, the diffusion of iron element into titanium sponge is accelerated in vacuum state. If titanium infiltration treatment is not performed, not...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C10/24
CPCC23C10/24
Inventor 胥永王继宪
Owner 朝阳金达钛业股份有限公司
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