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Burner for production of inorganic sphericalized particle

A technology of spheroidization and inorganic substances, which is applied in the direction of burners, gas fuel burners, combustion methods, etc., can solve the problem of insufficient burners, etc., to prevent the reduction of the amount that can be spheroidized, high safety, and easy operation Effect

Inactive Publication Date: 2011-05-18
NIPPON SANSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] From this, it can be seen that the burners described in Patent Documents 3 and 4 are not sufficient to obtain spheroidized particles with a smaller average particle size.

Method used

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  • Burner for production of inorganic sphericalized particle
  • Burner for production of inorganic sphericalized particle
  • Burner for production of inorganic sphericalized particle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0068] Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited by these examples.

[0069] Will figure 1 and figure 2 The burner configuration of the present invention is shown in image 3 In the furnace top of the vertical furnace E of the shown inorganic spheroidized particle manufacturing apparatus, the raw material powder cut out by the raw material supply machine A is supplied to the burner B and spheroidized in the vertical furnace E.

[0070] Specifically, 20 kg / h of silica powder as a raw material powder was used in a 7.5 Nm 3 / h of oxygen (carrier gas) is transported through the powder dispersion plate 2 and introduced into the raw material dispersion chamber 4A. In addition, LPG as a fuel gas was supplied at 5 Nm from the fuel supply path 5A 3 / h is introduced into the combustion chamber 8, and is supplied by the primary oxygen supply path 6A and the secondary oxygen supply path ...

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PUM

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Abstract

A burner for production of inorganic sphericalized particles comprising a raw material powder supply channel for supplying of raw material powder with the use of oxygen or an oxygen-enriched air as a carrier gas; a powder dispersion plate with a multiplicity of small perforations fitted to a downstream end of the raw material powder supply channel; a raw material dispersion chamber defined by a dispersion pipe fitted to a downstream end of the powder dispersion plate; a fuel supply channel disposed around the outer circumference of the raw material powder supply channel; an oxygen supply channel disposed around the outer circumference of the fuel supply channel; and a combustion chamber disposed downstream of the raw material dispersion chamber, the combustion chamber having its inside diameter increasing along the downstream direction and communicating with the fuel supply channel and oxygen supply channel.

Description

technical field [0001] The present invention relates to a burner used for producing spherical inorganic particles, an apparatus for producing spherical inorganic particles using the burner, a method for producing spherical inorganic particles using the apparatus, and spherical particles obtained. Background technique [0002] The inorganic spheroidized particles are particles obtained by melting and pulverizing raw material powder in a high-temperature flame and spheroidizing by surface tension. For example, high-purity spherical silica, which uses silica as a raw material, is widely used as a filler for epoxy sealing materials for semiconductor devices. Spheroidization improves the fluidity of the filler, high filling, and wear resistance. Improvement and other advantages. In addition, in this specification, an inorganic spherical particle may be described only as a spherical particle. [0003] For the production of inorganic spheroidized particles, there are methods disc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D14/24B01J2/16
CPCY02E20/344F23D14/24F23D14/32Y02E20/34Y10T428/2982B01J2/16
Inventor 萩原义之铃木一路三宅新一山本康之
Owner NIPPON SANSO CORP
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