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Production method and device of nanmeter antimong trioxide

A technology of antimony trioxide and a production method, which is applied in chemical instruments and methods, nanotechnology, nanotechnology and other directions, can solve the problems of short gasification reaction time, difficult production and acquisition, fast falling speed, etc., and achieves simple process equipment, The effect of good product quality and low production cost

Active Publication Date: 2005-08-24
贵州正业龙腾新材料开发有限公司
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Problems solved by technology

The shortcomings of the above-mentioned technology are: the material and the heat source flow from top to bottom in the same direction, which may entrain the insufficiently gasified antimony trioxide; The reaction time is short; it is difficult to realize the heating, gasification and quenching process of materials in the same reactor to form a quenching temperature difference; the cooling water jacket causes uneven cooling speed; the plasma working temperature is brought into the low-temperature gas or reverberatory furnace Gas dilution, which affects the high temperature characteristics of the plasma arc
Due to the above reasons, the above technologies are difficult to produce nano powders with large specific surface area

Method used

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  • Production method and device of nanmeter antimong trioxide

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Embodiment 1

[0014] Embodiment 1: the production device of nano antimony trioxide is as attached figure 1 As shown, it includes plasma generator, feeding device, reactor and quenching settler. The characteristics are: the reactor is a horizontal reactor, the structure of the horizontal reactor includes a horizontal reaction chamber 8, the reaction chamber 8 is connected to the plasma generator 5 through the heat source inlet 6 in the horizontal direction at the end, and the heat source The inlet 6 can be made of high temperature resistant material or stainless steel water jacket, and the reaction chamber 8 is lined with high temperature refractory material 12 and thermal insulation material 13 . The working temperature of the inner wall of the reaction chamber 8 is 1400-1900°C. It is connected to the feeding device through the upper feed port, and connected to the quenching settler 18 through the tail discharge port 11 or 14. The lower part of the reaction chamber 8 is provided with a sec...

Embodiment 2

[0015] Example 2. Using high-grade antimony oxide ore powder with a particle size of no more than 0.5 mm as raw material, its chemical composition is Sb 70%, As 0.05%, Pb 0.08%, Se 0.003%, Fe 0.2%, and the balance is other impurities; DC arc is used Plasma generator, input power 120KW, the air plasma temperature generated is 5000-8000℃, and the air working gas volume is 18m 3 / h; the powder dosage per hour is 16kg; the first gasification time of the powder in the reactor is controlled above 0.3 seconds; the temperature of the reaction product at the outlet of the reactor is 1700-1900°C, and the cooling air volume is 950m 3 / h, cooling rate 9×10 5 °C / s. The finished product obtained has the following properties. Specific surface area: Using ST-03 specific surface meter, the result measured according to GB / T13390-1992 standard is 61.5 meters 2 / g; Particle size: Using H-700 70,000 times transmission electron microscope, the detection result particle size ranges from 10 to 50...

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Abstract

A process and equipment for preparing nano-Sb2O3 features that the oxide of antiomony or antimony oxide ore powder is used as raw material, the air plasma is used as heat source, and the horizontal reactor and two-pass gasifying are used to prepare cubic-crystalline high-activity nano-Sb2O3.

Description

Technical field: [0001] The invention relates to a production method and device of nano antimony trioxide, belonging to the fields of metallurgy and chemical new materials. Background technique: [0002] Nano antimony trioxide refers to antimony trioxide powder with a particle size of less than 100nm. Nano antimony trioxide particles are small, have large specific surface area, high energy state of surface atoms, and have surface effect and volume effect. They are mainly used as plastics, High-grade flame-retardant additives for rubber, cotton fabrics, and polymer materials, and nano-fireproof coatings produced with nano-antimony trioxide can be used in high-temperature insulation materials, automotive interior decoration, and military equipment. Nano antimony trioxide can also be used to produce high-grade products such as nano paint, enamel, and pigment. The particle size of nano antimony trioxide is small, which has little effect on the strength of the matrix material. I...

Claims

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Application Information

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IPC IPC(8): B82B3/00C01G30/00
Inventor 樊张帆范支鹏张瑜沈志平王翔
Owner 贵州正业龙腾新材料开发有限公司
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