A device for preparing high-purity nanomolybdenum trioxide
A nano-molybdenum trioxide and molybdenum trioxide technology, applied in lighting and heating equipment, crucible furnaces, furnaces and other directions, can solve the problems of slow heating speed, low heat transfer efficiency, and unsatisfactory control effect, and achieve easy control, The effect of high preparation efficiency and fast heating speed
Active Publication Date: 2017-12-29
HUBEI ZHONGAO NANO MATERIAL TECH CO LTD
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Problems solved by technology
However, the sublimation furnace in this device uses an ordinary iron plate as the outer shell, is lined with high-quality refractory bricks, and the heating element is a silicon-molybdenum U-shaped rod. This heating method has slow heating speed and low heat transfer efficiency. The effect is not very ideal
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[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0019] see figure 1 , a device for preparing high-purity nano-molybdenum trioxide, comprising a feeding port 1, the bottom of the feeding port 1 communicates with a feeding auger 2, and the feeding auger 2 is connected with a variable frequency speed regulating motor 20, The outlet of the feeding auger 2 extends into the inside of the sublimation furnace 3, the bottom of the sublimation furnace 3 is provided with a discharge port 4, the upper side of the sublimation furnace 3 communicates with the molybdenum trioxide steam channel 5, and the molybdenum trioxide The steam channel 5 is provided with a dispersant nozzle 6 and a cooling air port 16, and the outlet of the molybdenum trioxide steam channel 5 communicates with the recovery device 7, and the recovery device 7 is equipped with a thermocouple 19, and the measurement of the ther...
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The invention discloses a device for preparing high-purity nano molybdenum trioxide. The device comprises a feeding hole, wherein the bottom of the feeding hole is communicated with a conveying auger; an outlet of the conveying auger extends into a subliming furnace; a discharge hole is formed in the bottom of the subliming furnace; the upper side of the subliming furnace is communicated with a molybdenum trioxide steam channel; a dispersant nozzle is formed in the molybdenum trioxide steam channel; an outlet of the molybdenum trioxide steam channel is communicated with a recoverer; a finished product collection bucket is arranged at the bottom of the recoverer; the device is characterized in that a silicon nitride liner layer, a graphite cushioned layer and a high-temperature insulation layer are arranged on the furnace wall of the subliming furnace in sequence; and a medium frequency induction heating copper pipe is mounted on the outer wall of the high-temperature insulation layer. According to the device, the medium frequency induction heating copper pipe is high in heating speed, high in efficiency and easy to control; and a silicon nitride liner can ensure that the heat utilization rate is maximized, so that the energy consumption is reduced.
Description
technical field [0001] The invention relates to the technical field related to the production of molybdenum trioxide, in particular to a device for preparing high-purity nano molybdenum trioxide. Background technique [0002] In the industry, molybdenum trioxide is generally produced by calcining ammonium molybdate, or the molybdenum concentrate is leached with acid and alkali under high pressure and oxygen by chemical method, and impurities are separated to produce molybdate, and high-purity molybdenum trioxide is decomposed. . With the continuous development of material science and application technology, the molybdenum trioxide prepared by the above method cannot be solved due to the coarse particles, agglomerated state and low purity of molybdenum trioxide. The application of highly active molybdenum trioxide in the field of catalysts not only has specific requirements for the impurities and particle size distribution of molybdenum trioxide, but also has specific requir...
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IPC IPC(8): F27B14/06F22B1/28F27B14/20F27B14/10F27B14/16F27B14/14
CPCF22B1/28F27B14/061F27B14/0806F27B14/10F27B14/14F27B14/20F27B2014/104
Inventor 陈方吾孙正陈镇李修荣陈宏波曾庆兵陈洛丞
Owner HUBEI ZHONGAO NANO MATERIAL TECH CO LTD