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Method for preparing TiC mTiO sosoloid using titanium complex ore as material

A compound ore and solid solution technology, applied in the field of non-ferrous metallurgy, can solve the problems that the price of titanium cannot be greatly reduced, and achieve the effects of broad industrial application prospects, quick results, and strong adaptability of raw materials

Inactive Publication Date: 2008-05-28
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] After decades of development in the world titanium industry, although a series of improvements have been made to the Kroll method and the Hunter method, they are all intermittent operations, and small improvements cannot greatly reduce the price of titanium

Method used

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  • Method for preparing TiC mTiO sosoloid using titanium complex ore as material
  • Method for preparing TiC mTiO sosoloid using titanium complex ore as material
  • Method for preparing TiC mTiO sosoloid using titanium complex ore as material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh 200 grams of rutile concentrate, its composition is 95.96% TiO 2 , 1% Fe 2 O 3 , The rest is in trace amounts. Weigh 58.68 grams of graphite powder according to the following chemical reaction ratio

[0022] Fe 2 O 3 +3C=2Fe+3CO

[0023] TiO 2 +4C=TiC·TiO+3CO

[0024] The mixture is uniformly mixed, placed in a graphite crucible, and reacted at 1400° C. for 5 hours under vacuum to obtain a TiC·TiO-rich mixture. The mixture is crushed and pulverized to 44-150 microns, which accounts for 90%. The product is impregnated with dilute hydrochloric acid, the impregnation temperature is 80°C, the impregnation time is 100 minutes, the liquid-solid ratio is 16:1, the hydrochloric acid concentration is 20%, and the stirring speed is 80 revolutions per second. The product was filtered and dried, and then washed once under the same conditions to obtain a TiC·TiO solid solution (elemental analysis carbon to oxygen atom ratio of 1:1.02) powder with a content of 97.92%.

Embodiment 2

[0026] Weigh 200 grams of rutile concentrate, its composition is 97.13% TiO 2 , 0.9% Fe 2 O 3 , And the rest is in trace amounts. Weigh 87.82 grams of graphite powder according to the following chemical reaction measurement ratio:

[0027] Fe 2 O 3 +3C=2Fe+3CO

[0028] TiO 2 +3C=TiC+2CO

[0029] They are mixed uniformly, placed in a graphite crucible, and reacted at 1500° C. for 8 hours under the protection of argon to obtain a TiC-rich mixture. The mixture is crushed and pulverized to 44-150 microns, which accounts for 90%. The product is impregnated with dilute hydrochloric acid, the impregnation temperature is 60°C, the impregnation time is 60 minutes, the liquid-solid ratio is 12:1, the hydrochloric acid concentration is 15%, and the stirring speed is 100 revolutions per second. The product was filtered and dried, and then washed once under the same conditions to obtain a powder with a TiC (elemental analysis carbon to oxygen atomic ratio of 1:0.02) content of 98.15%.

Embodiment 3

[0031] Weigh 200 grams of high-titanium slag, its composition is 77.26% TiO 2 , 10.28% FeO, 5.68% MgO, 3.21% SiO 2 , 1.69% CaO, 1.26% Al 2 O 3 , Weigh 49.78 grams of graphite powder according to the following chemical reaction metering ratio:

[0032] FeO+C=Fe+CO

[0033] 2TiO2 +4C=TiC·TiO+3CO

[0034] They are mixed uniformly, placed in a graphite crucible, and reacted at 1500° C. for 4 hours under the protection of argon to obtain a TiC·TiO-rich mixture. This mixture is crushed and pulverized to 44-150 microns, which accounts for 90%. The product is impregnated with dilute hydrochloric acid, the impregnation temperature is 90°C, the impregnation time is 60 minutes, the liquid-solid ratio is 20:1, the hydrochloric acid concentration is 15%, and the stirring speed is 100 revolutions per second. Filter and dry the product, and then wash it twice under the same conditions, and finally obtain TiC·TiO solid solution (elemental analysis shows that the carbon to oxygen atomic ratio is 1...

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Abstract

The invention relates to a method of making TiC,mTiO sosoloid by using a plurality of common titanium complex ores as raw materials, such as rutile, high-titanium slag, titanium concentrate, ilmenite rock mine, ilmenite placer, rich ferrotitanium concentrate ore and the like. The invention is characterized in that titanium complex ores and a proportion of carbonaceous materials of carbite, coke and coal are uniformly mixed and reacted in the device with hot vacuum or inert gas and then the product is separated and purified after wet treatment, and at last achieve high-purity TiC,mTiO(0<=m<íÌ) sosoloid. The technical procedures of the invention are that carbonaceous materials are utilized to deacidize titanium complex ores at a temperature of 1000-2000 DEG C under the protection of the vacuum or inert gas. To ensure the purity and the utilization ratio of the product, titanium complex ores and carbonaceous materials are uniformly mixed at a certain proportion and the mixture rich in TiC,mTiO is achieved, the product with more than 95% content of TiC,mTiO is achieved after acid pickling and alkali washing. The method has the advantages of strong application of material, short technological process, simple device, small investment, fast effect, low energy consumption and continuous production and the like.

Description

Technical field [0001] The invention belongs to the field of non-ferrous metallurgy, and particularly relates to a method for preparing TiC·mTiO solid solution from multiple titanium oxide composite ores. Background technique [0002] Titanium and its alloys have excellent properties such as low density, corrosion resistance, and high temperature resistance. The world titanium industry is undergoing a transition from a single model with aerospace as the main market to a multiple model with the development of metallurgy, energy, transportation, chemical, biomedicine and other civilian fields as the focus. At present, there are only a few countries in the world that can carry out industrialized production of titanium, such as the United States, Japan, Russia, and China. The world's total annual output of titanium is only 100,000 tons. However, due to the significant strategic value of titanium and its status in the national economy, titanium will become the "third metal" after iron...

Claims

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Application Information

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IPC IPC(8): C25C3/28C22B1/00C22B3/06C22B34/12
Inventor 朱鸿民高承君
Owner UNIV OF SCI & TECH BEIJING
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