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
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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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