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A method of producing titanium

A technology of titanium metal and hexafluorotitanate, applied in chemical instruments and methods, titanium compounds, inorganic chemistry, etc., can solve the problems of expensive titanium metal, high loss, expensive precursors, etc.

Inactive Publication Date: 2008-01-23
PERUKE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main reason why titanium metal is so expensive is because of the expensive precursors to prepare titanium, and because of the high losses due to oxidation during the melting, casting and forging of the metal.

Method used

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  • A method of producing titanium
  • A method of producing titanium
  • A method of producing titanium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0148] Reduction of (NH by Al(Hg) 4 ) 2 TiF 6 Titanium from ilmenite

[0149] Step 1: Digest ilmenite with diluted HF

[0150] Feed

[0151] Ilmenite concentrate is used as feed for the digestion step. The material contains approximately 89.5% ilmenite, 6% hematite, 2.5% quartz, and 2% other metal oxides. The particle size was uniform with about 98% of the material having a particle size between +45 μm and -106 μm. The material typically has the following chemical composition:

[0152] Al

Ca

Fe

Mg

mn

Si

Ti

V

0.35％

0.1％

37.2％

0.27％

0.95％

1.18％

28.3％

0.5％

[0153] Stoichiometric: HF required for 500g ilmenite feed

[0154] The ilmenite used was composed of FeTiO 3 (89.5%), Fe 2 o 3 (6.0%), SiO 2 (2.5%) and other substances (2%). This is equivalent to counting as 500g of FeTiO 3 (447.5g; 2.95mol), Fe 2 o 3 (30g; 0.19mol) and SiO 2 (12.5 g; 0.21 mol). per mo...

Embodiment 2

[0213] Preparation of Titanium-Vanadium Alloy

[0214] Step 1: Preparation of NH 4 VF 4 and VF 3

[0215] To manufacture titanium alloys, such as Ti-6Al-4V, alloying elements in the form of metal fluorides are combined with TiF in appropriate proportions before reduction with Al 3 mix. In the case of Ti-6Al-4V, VF 3 was added to TiF 3 , and use 6% excess Al in the reduction process to make the AlF 3 Alloy powder is produced after sublimation.

[0216] V cannot be VF 5 or VF 4 Introduced because these compounds have low boiling points and they may undergo sublimation prior to reduction. Therefore, VF must be prepared as follows 3 As a V precursor.

[0217] Will NH 4 VO 3 (58.5g) was added to water (300ml) and stirred. Will NH 4 Cl (53.5 g) and HF (40%; 130 ml) were added to the resulting solution resulting in a yellow solution.

[0218] Fe (14 g, steel wire) was added to the solution to reduce V(V) to V(IV). The reaction was exothermic and a blue solution wa...

Embodiment 3

[0226] By (NH 4 ) 2 FeCl 4 Solution regeneration NH 4 Cl

[0227] If using NH 4 OH as a by-product (NH 4 ) 2 FeCl 4 Precipitation of Fe(OH) in solution 2 , the resulting problem is that at high concentrations of NH 4 Solubility in Cl. This leads to very slow precipitation. Moreover, Fe(OH) 2 Oxidized by air to FeO(OH) (in NH 4 low solubility in Cl) is slower and impractical, use H 2 o 2 Oxidation is more effective but the reagent is expensive.

[0228] The applicant has found that the oxidation of Fe(II) to Fe(III) can be enhanced by introducing an electric current into the solution. The following reactions occur:

[0229] (NH 4 ) 2 FeCl 4 +Current=Fe+Cl 2 +2NH 4 Cl

[0230] Cl 2 +2(NH 4 ) 2 FeCl 4 =2FeCl 3 +4NH 4 Cl

[0231] 2FeCl 3 +6NH 4 OH=6NH 4 Cl+2FeO(OH)+2H 2 o

[0232] 3(NH 4 ) 2 FeCl 4 +6NH 4 OH + current = 12NH 4 Cl+Fe+2FeO(OH)+2H 2 o

[0233] Therefore, by adding NH while stirring 4 OH, 1 liter (NH 4 ) 2 FeCl 4 The pH of ...

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Abstract

A method for preparing titanium metal from a titanium-containing material, comprising the steps of: preparing a M"TiF6 solution from a titanium-containing material, selectively precipitating M'2TiF6 from the solution by adding (M')aXb, utilizing the selectivity Precipitated M'2TiF6 prepares titanium. M" is a cation forming hexafluorotitanate, M' is selected from ammonium and alkali metal cations, X is selected from halides, sulfates, nitrites, acetates and nitrates Anion of , and a and b are 1 or 2.

Description

technical field [0001] The invention relates to the preparation of titanium metal, titanium alloy and titanium compound. Background technique [0002] Titanium is often prepared from titanium tetrachloride (TiCl 4 ) commercially prepared. The method includes a sodium or magnesium reduction step. Titanium has also been reduced by sodium hexafluorotitanate (K 2 TiF 6 ), by electrolytic reduction of titanium dioxide (TiO 2 ) and by reducing TiO with magnesium or calcium 2 to prepare. Thus, titanium can be prepared from various titanium-containing precursors by utilizing various reducing agents. [0003] Titanium metal is about 45% denser than steel, however, titanium has comparable strength to steel, and it has excellent chemical resistance. Titanium is also the ninth most abundant element in the Earth's crust. However, despite its abundance and excellent properties, the global market for titanium is only 1% of the aluminum market, or only 0.1% of the stainless steel m...

Claims

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Application Information

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IPC IPC(8): C22B34/12C01G23/00C22C1/00
CPCC22B34/1263C22B34/129C22B34/1213C22B34/1259C22B34/1245Y10T428/12181Y10T428/12681C22B34/12C01G23/00
Inventor 格拉尔德·比勒陀利乌斯
Owner PERUKE
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