Titanium-containing mineral treatment method

A mineral, ilmenite technology, applied in titanium oxide/hydroxide, titanium dioxide, active material electrodes, etc., can solve problems such as limited applicability

Active Publication Date: 2021-07-06
锦州阿里钛时代科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Despite its satisfactory electrochemical performance, the use of expensive and environmentally problematic chemicals severely limits the applicability of this method, especially on larger scales

Method used

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  • Titanium-containing mineral treatment method
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  • Titanium-containing mineral treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The processing of ilmenite in embodiment 1 molten salt:

[0042] In an agate mortar, put 2.0 g of FeTiO 3 (Alfa Aesar, CAS: 12022-7-1-8, >99.8%) and 50 g LiCl (Alfa Aesar, CAS: 7447-41-8, 99%) were thoroughly mixed. The mixture was placed in a high-purity graphite crucible and transferred to a vertical gas-tight furnace. Then, under argon atmosphere at 3 °C min -1 The heating rate raised the furnace temperature to 800 °C. At this temperature, various experiments were carried out for different durations of 2, 4, 6, 8 and 10 h in a humidified argon atmosphere with a humidity of 2%. Moisture was provided by flowing Ar gas through a U-shaped vessel filled with deionized water. As shown in Table 1, we defined these samples as MS2, MS4, MS6, MS8 and MS10. After cooling the reactor to room temperature, samples were collected and washed several times with deionized water, then vacuum filtered and freeze-dried overnight.

[0043] Each sample prepared in the embodiment of t...

Embodiment 2

[0059] Fe in embodiment 2. molten salt 2 Ti 3 o 9 processing of:

[0060] Example 1 was repeated except that Fe was treated in molten LiCl at a temperature of 750 °C 2 Ti 3 o 9 mineral. The treatment was performed for 1.5 hours in a humid atmosphere with a humidity of 1.0%. The product consists of Fe 2 o 3 and Li 0.89 o 4 Ti 2 composition.

Embodiment 3

[0061] Embodiment 3. Production of lithium titanium oxide:

[0062] The sample MS4 prepared in Example 1 was used to prepare lithium titanium oxide. Sample MS4 consists of Fe 2.936 o 4 and Li 0.8 Ti 2.2 o 4 crystal composition. Fe 2.936 o 4 is magnetic, while Li 0.8 Ti 2.2 o 4 is non-magnetic. Therefore, Fe can be separated by applying a magnet 2.936 o 4 crystals. Gained Li 0.8 Ti 2.2 o 4 The sample contained 0.06% by weight Fe.

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Abstract

The invention relates to the field of titanium-containing mineral treatment, in particular to a titanium-containing mineral treatment method. One aspect of the invention relates to a method for separating iron and titanium components from titanium-containing minerals, such as ilmenite (FeTiO3) and Fe2Ti3O9. The method does not involve toxic and environmentally problematic chemicals (such as acids and chlorine). In the method, a titanium-containing ore is converted into two phases, an iron-containing magnetic phase and a titanium-containing non-magnetic phase, and then the magnetic phase can be separated from the non-magnetic phase by applying a magnet, and the non-magnetic titanium-containing phase can be used to prepare TiO2 and titanium alloys. Another aspect of the invention relates to a method for modifying titanium-containing minerals such as ilmenite (FeTiO3) and Fe2Ti3O9 ores in molten salts. The treatment results in the incorporation of an alkali metal oxide, such as Li2O, into the structure of the material. The obtained powder has excellent performance in energy storage devices. The aspect of the invention also relates to a method of preparing an electrode material that can be used in a rechargeable battery.

Description

technical field [0001] The invention relates to the field of processing titanium-containing minerals, in particular to a processing method for minerals containing titanium, iron and oxygen. [0002] technical background [0003] Ilmenite (FeTiO 3 ) with annual global production and reserves of 770 billion tons and 770 billion tons (2019 estimate), respectively. It is one of the most abundant minerals in the earth's crust and accounts for about 90% of the world's titanium consumption. In fact, ilmenite is the industrial production of bulk TiO 2 The main source of titanium dioxide is the main source of white pigment [P.S.Croce, A.Mousavi, Asustainable sulfate process to produce TiO 2 Pigments, Environ.Chem.Lett.11(2013) 325–328] and traditional titanium alloys and advanced titanium alloys, such as titanium aluminide [A.R.Kamali, AU Patent2005100278, 2005]. It is worth mentioning that ilmenite concentrate The price of ore is low, about 200 US dollars per ton (2020), which i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/04C01G23/047C01G49/06C01G49/02H01M4/58H01M10/0525B82Y30/00B82Y40/00
CPCC01G23/04C01G49/06C01G23/047C01G49/02H01M4/5825H01M10/0525B82Y30/00B82Y40/00C01P2004/64C01P2006/40C01P2004/03C01P2002/72C01P2002/82C01P2004/04C01P2004/02C01P2006/42H01M2004/027Y02E60/10Y02P10/20
Inventor 阿里·雷扎·卡马里
Owner 锦州阿里钛时代科技有限公司
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