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Device and method for quickly preparing lambda-Ti3O5 powder

A powder and fast technology, applied in the direction of titanium low-value oxides, titanium oxide/hydroxide, etc., can solve the problems of complex operation process, complex process, long reaction time, etc., and achieve λ-Ti3O5 phase stability, The operation process is simple and the preparation cycle is extremely short

Active Publication Date: 2020-04-14
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] CN105887182 A discloses a manufacturing process of trititanium pentoxide crystals. Titanium powder and titanium dioxide are evenly mixed, granulated and dried to form sintered blocks, and the furnace body is vacuumed to 10 3 ~10 4 Below Pa, adopt the method of step-by-step heating and sintering: the first stage rises to 1200°C at normal temperature; the second stage rises from 1200°C to 1500°C, and fills inert gas when the temperature reaches 1400°C; the third stage rises from 1500°C to 1750°C ~1850°C, this invention effectively avoids the formation of a large number of pores, and the purity and quality of the obtained titanium pentoxide are high, but the reaction process takes a long time, and the light holding time is as long as 13 to 30 hours, and the process is relatively complicated
[0006] CN103806099 A discloses a kind of method for preparing trititanium pentoxide crystal, adopts the method for stage-by-stage sintering equally, has made sheet-like trititanium pentoxide crystal, has shortened pre-melting time or saved pre-melting time, direct evaporation, saves The coating time is shortened, the invention requires a special sintering mold, and the operation process is relatively complicated

Method used

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  • Device and method for quickly preparing lambda-Ti3O5 powder
  • Device and method for quickly preparing lambda-Ti3O5 powder
  • Device and method for quickly preparing lambda-Ti3O5 powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A Rapid Preparation of λ-Ti 3 o 5 Powder equipment, such as figure 1 As shown, it includes a hydrogen storage tank 1, a material tank 2, a reaction furnace 3, a gas-solid separator 4, a material collection tank 5, an exhaust gas purification device 6, a vibrator 7, and a straight line 8; the hydrogen storage tank 1 is connected to the inlet of the material tank 2 , the bottom of the material tank 2 is provided with a vibrator 7, the bottom of the vibrator 7 is provided with a linear motor 8, the outlet of the material tank 2 is connected to one end of the reaction furnace 3, the other end of the reaction furnace 3 is connected to the gas-solid separator 4, and the gas-solid separator 4 The bottom is connected to the material collection tank 5, the top of the gas-solid separator 4 is connected to the exhaust gas purification device 6, the material tank 2 is provided with a vertical track inside, and there is a groove on the material tank cover, and the groove matches th...

Embodiment 2

[0033] Adopt the device of embodiment 1, prepare λ-Ti rapidly 3 o 5 The powder method, the specific steps are as follows:

[0034] (1) First, replace the air in the reaction device with hydrogen repeatedly, so that the hydrogen atmosphere is maintained in the furnace device; the length of the high-temperature heating section in the reaction furnace 3 is 0.8 meters;

[0035] (2) Dry the commercial P25 powder and put it into the material tank 2, start the vibrator 7 and the linear motor 8, the vibration frequency of the vibrator 7 is 55Hz, the running speed of the output end of the linear motor 8 is 8mm / min, and the vibrator 7 drives The material tank 2 and the titanium dioxide powder inside vibrate, and the linear motor 8 drives the vibrator 7, the material tank 2 and the titanium dioxide powder inside the material tank 2 to move towards the material tank cover, so that the titanium dioxide powder is close to the hydrogen pipe;

[0036] (3) Open the valve of the hydrogen stor...

Embodiment 3

[0044] Adopt the device of embodiment 1, prepare λ-Ti rapidly 3 o 5 The powder method, the specific steps are as follows:

[0045] (1) First, replace the air in the reaction device with hydrogen repeatedly, so that the hydrogen atmosphere is maintained in the furnace device; the length of the high-temperature heating section in the reaction furnace 3 is 1.2 meters;

[0046] (2) Put the commercial P25 powder into the material tank 2 after drying, start the vibrator 7 and the linear motor 8, the vibration frequency of the vibrator 7 is 60Hz, the running speed of the output end of the linear motor 8 is 10mm / min, and the vibrator 7 drives The material tank 2 and the titanium dioxide powder inside vibrate, and the linear motor 8 drives the vibrator 7, the material tank 2 and the titanium dioxide powder inside the material tank 2 to move towards the material tank cover, so that the titanium dioxide powder is close to the hydrogen pipe;

[0047] (3) Open the valve of the hydrogen s...

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Abstract

The invention discloses a device and a method for quickly preparing lambda-Ti3O5 powder. The device comprises a hydrogen storage tank, a material tank, a vibrator, a linear motor, a reaction furnace,a gas-solid separator, a material collection tank and a tail gas purification device. Commercial P25 or pigment-grade titanium dioxide is used as a raw material, hydrogen is used as a carrier gas anda reducing gas, the gas flow and the reaction temperature are controlled, and lambda-Ti3O5 powder is obtained in a material collecting area after the reaction is finished; according to the method, lambda-Ti3O5 powder can be rapidly prepared, the particle size of the powder is micron-sized, the Ti3O5 phase is stable, and rapid preparation of lambda-Ti3O5 powder is realized.

Description

technical field [0001] The invention provides a rapid preparation of λ-Ti 3 o 5 The powder device and method belong to the field of powder material preparation. Background technique [0002] Since the 1970s, solar technology has developed rapidly because of its attractive application prospects. Utilizing the inexhaustible solar energy to solve the energy shortage problem, its non-polluting and degradable nature of existing pollution has become a perfect choice for human beings. [0003] In the application of energy and environment, the content of titanium in the earth's crust is high, and its main oxides have various synthesis processes, and because of the stable physical and chemical properties of various titanium oxides, moderate band gap, good oxygen sensitivity, light storage, and photocatalytic performance, the price Cheap and easy to get, it has become a research hotspot of titanium nano-semiconductor materials. Among many titanium oxide nanomaterials, Ti 3 o 5 I...

Claims

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Application Information

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IPC IPC(8): C01G23/04
CPCC01G23/043C01P2002/72C01P2004/03C01P2004/61
Inventor 徐宝强翟蔚然杨佳杨斌田阳蒋文龙王飞李一夫熊恒刘大春戴永年曲涛孔令鑫孔祥峰郁青春邓勇
Owner KUNMING UNIV OF SCI & TECH
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