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Method for preparing ferroferric oxide nano-scale ultrafine powder through direct-current spinning, impacting and mixing

A technology of ferric oxide and ultrafine powder, which is applied in the direction of iron oxide/iron hydroxide, ferrous iron oxide, etc., and can solve the problem that it is difficult to efficiently prepare nanoscale ultrafine powder of ferric oxide , to achieve the effect of improving mixing efficiency, good dispersion and strengthening residence time

Pending Publication Date: 2022-05-10
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Description
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  • Application Information

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Problems solved by technology

In industrial applications, enterprises have different requirements for powder particle size. At present, it is difficult to efficiently prepare ferric oxide nano-scale ultrafine powder that meets the particle size required by enterprises.

Method used

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  • Method for preparing ferroferric oxide nano-scale ultrafine powder through direct-current spinning, impacting and mixing
  • Method for preparing ferroferric oxide nano-scale ultrafine powder through direct-current spinning, impacting and mixing
  • Method for preparing ferroferric oxide nano-scale ultrafine powder through direct-current spinning, impacting and mixing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation of ultrafine ferric oxide (Fe 3 o 4 ) The powder process is: FeCl is put into the liquid storage tank respectively 2 4H 2 O and FeCl 3 ·6H 2 O mixed solution and NaOH solution, turn on the water pump so that the two nozzles are fed with a certain concentration of FeCl 2 4H 2 O and FeCl 3 ·6H 2 O mixed solution and NaOH solution, so that the two reactants form a swirling collision in the reaction chamber, during the reaction, the heavy phase reacted completely Fe 3 o 4 The particles enter the collection funnel from the discharge port, and the light phase materials continue to participate in the reaction upwards. The mixed liquid is introduced into the washing and separating device through the collecting funnel, and then distilled water is passed into the feed pipes on both sides, and the light and heavy phases are continuously generated and reacted in the conical reaction chamber. After the reaction is complete, rinse with distilled water. During t...

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Abstract

The invention relates to a method for preparing ferroferric oxide powder, in particular to a method for preparing ferroferric oxide nanoscale superfine powder through direct-current spinning, impacting and mixing. According to the method, collision is carried out in the conical reaction chamber through a direct-current rotary collision technology, generated heavy-phase particles flow out through a lower discharging opening, other mixed materials are continuously mixed in the reaction chamber, the retention time of the particles in a collision area is prolonged, and contact and mixing are more sufficient. In addition, the product is treated by washing, filtering, drying and grinding devices to obtain powder particles meeting requirements. The preparation efficiency of the ferroferric oxide powder is effectively improved, the size and distribution of the ferroferric oxide powder particles can be regulated and controlled by controlling the operation parameters of the device, and the preparation of the ferroferric oxide ultrafine powder particles with controllable particle size and good dispersity is facilitated; and the method has a good prospect of continuously, efficiently and industrially producing the ferroferric oxide ultrafine powder.

Description

technical field [0001] The invention relates to a method for preparing ferric oxide ultrafine powder, in particular to a method for preparing iron ferric oxide nanoscale ultrafine powder by direct-current swirling and mixing. Background technique [0002] As a new mixing method, impinging flow is widely used in the chemical industry. Its main feature is that two high-speed fluids collide with each other to generate a high turbulence area in the impact area, thereby strengthening the interphase transfer and promoting microscopic mixing. Impingement flow technology has the advantages of improving reaction efficiency and shortening reaction time. Many scholars at home and abroad have developed, researched and applied impingement flow reactors, which have been widely used in mixing, drying, combustion, crystallization, and preparation of ultrafine powders. aspect. The general application of impinging flow technology to prepare ultra-fine powder can make the particle size of pow...

Claims

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Application Information

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IPC IPC(8): C01G49/08
CPCC01G49/08
Inventor 张建伟张忠闯董鑫冯颖
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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