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Method for producing oxide particles

A technology of oxide particles and manufacturing methods, applied in the direction of ferrous oxides, chemical instruments and methods, iron oxide, etc., can solve the problem of not being able to obtain single crystal oxide particles

Active Publication Date: 2018-03-27
M TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it was found that under relatively small pressure conditions (below 0.10 MPaG), single-crystal oxide particles cannot be obtained only by controlling the temperature of the film fluid.

Method used

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  • Method for producing oxide particles
  • Method for producing oxide particles
  • Method for producing oxide particles

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0112] (Preparation of Oxide Raw Material Liquid / Preparation of Oxide Precipitation Solvent)

[0113] In the present invention, at least the oxide particle raw material is mixed with a solvent to dissolve or disperse the molecules in the solvent to prepare the oxide raw material liquid, and at least the basic substance is mixed with the solvent to dissolve or disperse the molecules In the solvent to prepare the oxide precipitation solvent. As a solvent to be used, for example, water and / or an organic solvent, or a mixed solvent composed of two or more of the above-mentioned solvents can be mentioned. Examples of the water include tap water, ion-exchanged water, pure water, ultrapure water, RO water, and the like, and examples of the organic solvent include alcohol compound solvents, amide compound solvents, ketone compound solvents, ether compound solvents, Aromatic compound solvents, carbon disulfide, aliphatic compound solvents, nitrile compound solvents, sulfoxide compound...

Embodiment

[0276] Hereinafter, the present invention will be further specifically described with reference to Examples. However, the present invention is not limited to the embodiments described later. In the following examples, liquid A refers to the figure 1 The first fluid to be treated introduced by the first introduction part d1 of the device shown in the figure, and the liquid B refers to the second fluid to be treated introduced from the second introduction part d2 of the same device.

[0277] (X) In the example of the production method of magnetite particles, (X) is added before the number of the example, and (Y) in the example of the production method of the cerium oxide particle, the number of the example is added before the number (Y), (Z) In the example of the manufacturing method of α-hematite particles, (Z) is added before the number of the example, and each example is specified. However, in Tables 1 to 5 and the general examples of the drawings, (X) (Y) (Z) are omitted....

Embodiment X1

[0281] Using Clearmix (product name: manufactured by LM-2.2S.Mtechnique), which is a high-speed rotating dispersing emulsifier, a magnetite precipitation solvent and a magnetite raw material solution were prepared, respectively.

[0282] Specifically, based on the composition ratio of the magnetite precipitation solvent shown in Example X1 of Table 1, an alkaline substance and pure water were mixed, and Clearmix was used, and the rotation speed of the rotor was 10,000 rpm and the preparation temperature was 45°C. Under stirring for 30 minutes, the mixture was uniformly mixed to prepare a magnetite precipitation solvent.

[0283] In addition, based on the mixing ratio of the magnetite raw material solution described in Example X1 of Table 1, the magnetite particle raw material and pure water were mixed, using Clearmix, the rotation speed of the rotor was 20000rpm, and the preparation temperature was 50°C. The mixture was uniformly mixed by stirring for 30 minutes under the same...

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Abstract

The present invention addresses the problem of providing a method for producing oxide particles which allows crystallinity of the oxide particles to be improved and, more preferably, allows single crystal oxide particles to be obtained stably. This method includes at least two processed fluids including a first fluid and a second fluid, one of the first fluid and the second fluid being an oxide feed liquid which is a solvent into which at least an oxide particle raw material is mixed, and the other of the first fluid and the second fluid being an oxide precipitating solvent which is a solventinto which at least a basic substance is mixed. The first fluid and the second fluid are mixed between processing planes that are disposed facing each other, are movable toward and away from each other, and rotate relatively, and the mixed fluid into which the oxide particles are precipitated is discharged from between the processing planes. The crystallinity of the oxide particles discharged frombetween the processing planes is controlled by changing at least one element selected from the group consisting of the temperature of the first fluid introduced between the processing planes, the temperature of the second fluid introduced between the processing planes, and the temperature at the time of mixing of the first fluid and the second fluid.

Description

technical field [0001] The present invention relates to a method for producing oxide particles. Background technique [0002] Oxide particles are a kind of materials that are widely used in fields such as catalysts, conductive materials, magnetic materials, secondary electron emission materials, light-emitting bodies, heat sinks, energy storage bodies, electrode materials, color materials, etc. The properties of oxide particles vary with particle size, so oxide particles with different particle sizes and degrees of crystallinity are required depending on the purpose and requirements. Especially when it is made into particles, it will produce properties that are very different from the bulk state, so oxide particles will become a material that will be widely demanded in the future. [0003] For example, magnetite is a chemical composition expressed as Fe 3 O 4 (Fe(II)Fe(III) 2 O 4 ) of iron oxide, a material that has been widely used for a long time. In particular, magn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/08C01B13/32C01F17/00C01G49/06C01F17/235
CPCC01G49/06C01G49/08C01G1/02C30B7/14C01P2002/60C01P2002/72C01P2004/04C01P2004/50C01P2004/64C30B29/16C30B29/60C01B13/32C01F17/235C01P2002/54B01J2219/00177B01J2219/00051C01F17/206
Inventor 榎村真一本田大介
Owner M TECH CO LTD
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