JPH04147923A - Production of globular particle - Google Patents
Production of globular particleInfo
- Publication number
- JPH04147923A JPH04147923A JP26847790A JP26847790A JPH04147923A JP H04147923 A JPH04147923 A JP H04147923A JP 26847790 A JP26847790 A JP 26847790A JP 26847790 A JP26847790 A JP 26847790A JP H04147923 A JPH04147923 A JP H04147923A
- Authority
- JP
- Japan
- Prior art keywords
- particles
- globular
- amorphous
- pulverized
- temp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002245 particle Substances 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 14
- 239000011707 mineral Substances 0.000 claims abstract description 14
- 239000000112 cooling gas Substances 0.000 claims abstract description 9
- 238000002844 melting Methods 0.000 claims abstract description 8
- 230000008018 melting Effects 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims description 16
- 239000010419 fine particle Substances 0.000 claims description 12
- 238000002485 combustion reaction Methods 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000446 fuel Substances 0.000 abstract description 4
- 239000000377 silicon dioxide Substances 0.000 abstract description 4
- 238000010298 pulverizing process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 6
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 abstract 1
- 238000007712 rapid solidification Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000010881 fly ash Substances 0.000 description 3
- 239000012798 spherical particle Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000011802 pulverized particle Substances 0.000 description 2
- 239000004566 building material Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Landscapes
- Glanulating (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、コンクリート、建材、磁器の原料等に用いら
れる混和材等の球状微粒子の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for producing spherical fine particles such as admixtures used as raw materials for concrete, building materials, porcelain, etc.
従来、コンクリートの混和材等の微粒子を製造するに当
っては、鉱物質原料をミルにて微粉砕し、必要に応して
分級を行っていた。Conventionally, in producing fine particles such as concrete admixtures, mineral raw materials were pulverized in a mill and classified as necessary.
〔発明が解決しようとする課題］
前記従来の微粒子の製造方法では、鉱物質原料をミルで
微粉砕するのみであるため、得られた粒子は角のある粉
砕粒子であり、粒子結晶構造も原料のままである。[Problems to be Solved by the Invention] In the conventional method for producing fine particles, the mineral raw material is only finely pulverized in a mill, so the obtained particles are angular pulverized particles, and the particle crystal structure is similar to that of the raw material. It remains as it is.
このため、前記従来の技術で得られた微粒子をセメント
混和材として混入しても、ヘアリング効果による流動性
の向上には限度がある。また、結晶構造が原料の結晶質
のままであるために、セメント強度、水密性を向上させ
るためのポゾラン活性が低いままである。Therefore, even if the fine particles obtained by the conventional technique are mixed as a cement admixture, there is a limit to the improvement in fluidity due to the hair ring effect. Furthermore, since the crystal structure remains the same as that of the raw material, the pozzolanic activity for improving cement strength and watertightness remains low.
本発明は、上記の問題点を解決し、流動性、強度・水密
性もあわせて向上できる非晶質の球状微粒子の製造方法
を提供しようとするものである。The present invention aims to solve the above-mentioned problems and provide a method for producing amorphous spherical fine particles that can improve fluidity, strength, and watertightness.
本発明の球状微粒子の製造方法は、フライアッシュ、珪
石等の鉱物質原料を微粉砕して粒子径の調整を行ない、
これを鉱物質原料の融点以上の燃焼火炎中において溶融
、球状化した後、冷却ガスによって急冷して非晶質の粒
子とする。The method for producing spherical fine particles of the present invention involves finely pulverizing mineral raw materials such as fly ash and silica stone to adjust the particle size.
This is melted and spheroidized in a combustion flame at a temperature higher than the melting point of the mineral raw material, and then rapidly cooled with cooling gas to form amorphous particles.
本発明では、フライアッシュ、珪石等の鉱物質原料を微
粉砕してその粒子径を調整する。In the present invention, mineral raw materials such as fly ash and silica stone are pulverized to adjust the particle size.
以上のように粒度調整された粉砕粒子は、原料溶融点以
上の燃焼火炎中において溶融され、表面張力によって球
状化される。この溶融球状化粒子を冷却ガスによって急
冷することにより、熔融球状化粒子は溶融状態から結晶
化されることなく固化し、非晶質の球状微粒子となる。The pulverized particles whose particle size has been adjusted as described above are melted in a combustion flame at a temperature equal to or higher than the melting point of the raw material, and are spheroidized by surface tension. By rapidly cooling the molten spheroidal particles with a cooling gas, the molten spheroidal particles are solidified without being crystallized from the molten state, and become amorphous spherical fine particles.
本発明の一実施例を第１図によって説明する。 An embodiment of the present invention will be described with reference to FIG.
５ｉＯｚ、フライアッシュ、珪石等の鉱物質原料１は、
ミル２で平均粒径が１〜０．１−程度に微粉砕、粒度調
整され、バーナ４より燃料及び空気（必要に応じて酸素
富化空気）３とともに高温処理炉５の上部へ投入される
。燃料は、高温処理炉５において空気によって燃焼し、
前記鉱物質原料の融点以上の温度の高温燃焼火炎１２を
発生する。投入された粉砕微粒子は、この高温燃焼火炎
１２中で溶融され、その表面張力により球状となる。高
温処理炉５の下部へ冷却用ガス６が投入され、この球状
熔融粒子を同冷却用ガス６によって３°Ｃ／ｗｉｎ以上
の冷却速度で２．冷して固化させる。これによって、溶
融球状粒子は溶融状態から結晶されることなく固化し、
非晶質の微球状粒子が生成される。Mineral raw materials 1 such as 5iOz, fly ash, silica stone, etc.
The particles are finely pulverized and adjusted to have an average particle size of 1 to 0.1 in the mill 2, and then fed into the upper part of the high-temperature treatment furnace 5 along with fuel and air (oxygen-enriched air if necessary) 3 from the burner 4. . The fuel is combusted by air in the high temperature treatment furnace 5,
A high temperature combustion flame 12 having a temperature equal to or higher than the melting point of the mineral raw material is generated. The injected pulverized fine particles are melted in this high temperature combustion flame 12 and become spherical due to their surface tension. A cooling gas 6 is introduced into the lower part of the high-temperature treatment furnace 5, and the spherical molten particles are cooled by the cooling gas 6 at a cooling rate of 3°C/win or more for 2.5 hours. Cool and solidify. As a result, the molten spherical particles solidify without being crystallized from the molten state,
Amorphous microspherical particles are produced.
生成した非晶質球状微粒子は、多段サイクロン７８９に
より順次分級して製品Ａ、Ｂ、Ｃとするとともに、残存
粒子（１／／ｌ以下）をバグフィルタｌＯにて捕集し製
品りとし、排気１１をバグフィルタ１０より放出する。The generated amorphous spherical fine particles are sequentially classified by a multi-stage cyclone 789 to produce products A, B, and C, and the remaining particles (1//l or less) are collected by a bag filter IO and used as a product. 11 is released from the bag filter 10.
以上の通り、本実施例では、セメントの混和材等として
流動性、強度、水密性の発現効果の高い非晶質の球状微
粒子を得ることができ、また、分級され粒度の揃った球
状の微粒子を得ることができる。As described above, in this example, it is possible to obtain amorphous spherical fine particles that are highly effective in expressing fluidity, strength, and watertightness as an admixture for cement, etc., and also to obtain spherical fine particles that have been classified and have a uniform particle size. can be obtained.
以上の説明したように、本発明では、鉱物質原料を微粉
砕して粒度の調整を行ない、これを鉱物質原料融点以上
の燃焼火炎中において高温処理して溶融、球状化した後
、冷却ガスによって急冷固化させることにより非晶質球
状粒子を得ることができる。As explained above, in the present invention, mineral raw materials are finely pulverized to adjust the particle size, and after being melted and spheroidized by high-temperature treatment in a combustion flame above the melting point of the mineral raw materials, cooling gas is Amorphous spherical particles can be obtained by rapid cooling and solidification.
これにより、混和材等として流動性、強度、水密性等の
発現効果の高い非晶質の球状粒子を製造することができ
る。This makes it possible to produce amorphous spherical particles that exhibit high fluidity, strength, watertightness, and other effects as an admixture.
第１図は本発明の一実施例の系統図である。
１・・・鉱物質原料、 ２・・・ミル、３・・・燃料
及び空気（又は酸素富化空気）、４・・・バーナ、
５・・・高温処理炉、６・・・冷却用ガス、
７．８．９・・・サイクロン、ｌＯ・・・バグフィルタ
、 １１・・・排気、１２・・・高温燃焼火炎。
代理人 弁理士 坂 間 暁
外２名
第１図FIG. 1 is a system diagram of an embodiment of the present invention. 1... Mineral raw material, 2... Mill, 3... Fuel and air (or oxygen enriched air), 4... Burner,
5... High temperature treatment furnace, 6... Cooling gas,
7.8.9...Cyclone, lO...Bag filter, 11...Exhaust, 12...High temperature combustion flame. Agent: Patent Attorney Akigai Sakama (2 persons) Figure 1
Claims (1)
鉱物質原料の融点以上の燃焼火炎中において溶融し、球
状化した後、冷却ガスによって急冷して非晶質の粒子と
することを特徴とする球状微粒子の製造方法。The mineral raw material is finely pulverized to adjust the particle size, and then melted in a combustion flame at a temperature higher than the melting point of the mineral raw material, spheroidized, and then rapidly cooled with cooling gas to form amorphous particles. A method for producing spherical fine particles characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26847790A JPH04147923A (en) | 1990-10-08 | 1990-10-08 | Production of globular particle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26847790A JPH04147923A (en) | 1990-10-08 | 1990-10-08 | Production of globular particle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04147923A true JPH04147923A (en) | 1992-05-21 |
Family
ID=17459042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26847790A Pending JPH04147923A (en) | 1990-10-08 | 1990-10-08 | Production of globular particle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04147923A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5641717A (en) * | 1994-04-25 | 1997-06-24 | Castle; Richard B. | Compositions comprising fused particulates and methods of making same |
| JP2006247446A (en) * | 2005-03-08 | 2006-09-21 | Nisshin Seifun Group Inc | Method and apparatus for manufacturing fine particles |
| JP2008528259A (en) * | 2005-01-28 | 2008-07-31 | テクナ・プラズマ・システムズ・インコーポレーテッド | Inductive plasma synthesis of nanopowder |
| US7828999B2 (en) | 2004-09-07 | 2010-11-09 | Nisshin Seifun Group Inc. | Process and apparatus for producing fine particles |
| JP2010260034A (en) * | 2009-04-30 | 2010-11-18 | Nippon Eisei Center:Kk | High-precision classifier for shirasu balloon and high-precision classification method with the same |
-
1990
- 1990-10-08 JP JP26847790A patent/JPH04147923A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5641717A (en) * | 1994-04-25 | 1997-06-24 | Castle; Richard B. | Compositions comprising fused particulates and methods of making same |
| US7828999B2 (en) | 2004-09-07 | 2010-11-09 | Nisshin Seifun Group Inc. | Process and apparatus for producing fine particles |
| JP2008528259A (en) * | 2005-01-28 | 2008-07-31 | テクナ・プラズマ・システムズ・インコーポレーテッド | Inductive plasma synthesis of nanopowder |
| JP2006247446A (en) * | 2005-03-08 | 2006-09-21 | Nisshin Seifun Group Inc | Method and apparatus for manufacturing fine particles |
| JP2010260034A (en) * | 2009-04-30 | 2010-11-18 | Nippon Eisei Center:Kk | High-precision classifier for shirasu balloon and high-precision classification method with the same |
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