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Production method for impurity removal, quality improvement and upgrading of titanium sponge

A production method and technology of sponge titanium, which is applied in the production field of sponge titanium to remove impurities and upgrade its quality, can solve the problems of increased production cost and poor effect of removing impurities, and achieve the effects of improving efficiency, improving acid bubble effect, and good quality

Inactive Publication Date: 2021-03-09
龙佰禄丰钛业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that sponge titanium is re-distilled in the prior art, resulting in increased production cost and poor impurity removal effect, the present invention provides a production method for removing impurities and improving quality of sponge titanium, the purpose of which is to effectively remove impurities from sponge titanium Chlorine, magnesium, iron, improve the quality of sponge titanium by 3-4 grades

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Acid bubble: prepare 3% hydrochloric acid in the acid hopper, put the sponge titanium of the same grade in the sponge titanium hopper, then place it in the acid hopper for soaking for 1 hour, circulate and spray the acid water through the submerged pump, and use the ICP analyzer in time Detect acidity, magnesium, iron and other contents in acid water.

[0033] First washing: After acid leaching, take out the titanium sponge hopper, control the water and rinse it with deionized water for 1 hour, mainly to remove residual acid.

[0034] Second washing: Take the hopper out and put it into the hopper of deionized water for second washing, wash until the conductivity of the washing water is detected <200μS / cm, and use a conductivity meter to detect the acid water.

[0035] Drying: Fluidized bed hot air drying at 150°C for 10 minutes.

Embodiment 2

[0037] Acid bubble: Prepare 5% hydrochloric acid in the acid hopper, put the sponge titanium of the same grade in the sponge titanium hopper, then place it in the acid hopper for 2.5 hours, spray the acid water through the submerged pump, and use ICP analysis in time The instrument detects acidity, magnesium, iron and other contents in acid water.

[0038] First wash: After acid leaching, take out the titanium sponge hopper, control the water and rinse it with deionized water for 2 hours, mainly to remove residual acid.

[0039] Second washing: Take the hopper out and put it into the hopper of deionized water for second washing, wash until the conductivity of the washing water is detected <200μS / cm, and use a conductivity meter to detect the acid water.

[0040] Drying: Fluidized bed hot air drying at 150°C for 20 minutes.

Embodiment 3

[0042] Acid bubble: prepare 8% hydrochloric acid in the acid hopper, put the sponge titanium of the same grade in the sponge titanium hopper, then place it in the acid hopper for 4 hours, spray the acid water through the submerged pump, and use the ICP analyzer in time Detect acidity, magnesium, iron and other contents in acid water.

[0043] First washing: After acid leaching, take out the titanium sponge hopper, control the water, and rinse with deionized water for 3 hours, mainly to remove residual acid.

[0044] Second washing: Take the hopper out and put it into the hopper of deionized water for second washing, wash until the conductivity of the washing water is detected <200μS / cm, and use a conductivity meter to detect the acid water.

[0045] Drying: Dry in a drying room at 150°C for 30 minutes.

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PUM

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Abstract

The invention discloses a production method for impurity removal, quality improvement and upgrading of sponge titanium, and belongs to the technical field of sponge titanium preparation, and the problems of production cost increase and poor impurity removal effect caused by re-return distillation of sponge titanium in the prior art are solved. The production method comprises the following steps: A, preparing acid water, wherein the acid water comprises hydrochloric acid with the mass fraction of 3-8 % and nitric acid with the mass fraction of 3-8 %, and placing the titanium sponge sample to bedetected containing impurities in the acid water to be soaked for 1-4 hours; B, after soaking is completed, taking out the sample to be detected, and flushing the sample to be detected with deionizedwater for 2-4 times; and C, after flushing is completed, drying the sample to be detected, so as to complete impurity removal of the titanium sponge. According to the method, magnesium, chlorine andiron in the sponge titanium can be effectively removed through the modes of soaking adopting hydrochloric acid and nitric acid, washing and drying, so that the sponge titanium of the equal outer levelis upgraded by 3-4 levels, and meanwhile, the titanium ingot melting process and the ingot melting quality of the sponge titanium are not influenced.

Description

technical field [0001] The invention belongs to the technical field of sponge titanium preparation, in particular to a production method for removing impurities and improving quality of sponge titanium. Background technique [0002] Titanium sponge is sponge-like metal titanium. Its production method is to turn ilmenite into titanium tetrachloride, put it in a sealed stainless steel tank, fill it with argon, reduce it with magnesium, and distill it to get titanium sponge. The purity is generally 99.1-99.7%, the total amount of impurity elements is 0.3-0.9%, the impurity element oxygen is 0.06-0.20%, and the hardness (HB) is 100-157. According to the purity, it is divided into 7 grades from MHTi0A to MHTi5. The production of sponge titanium is the basic link of the titanium industry, and sponge titanium is the raw material for the production of industrial titanium alloys, titanium materials, titanium powder and other titanium components. [0003] In the production process of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B34/12C23G1/10
CPCC22B34/1295C23G1/106
Inventor 侯廉杰赵丁陈建立祝永红和奔流李建军陈建祖周兆平
Owner 龙佰禄丰钛业有限公司