JP3039950B2 - Spherical slag for slag cement and its production method - Google Patents
Spherical slag for slag cement and its production methodInfo
- Publication number
- JP3039950B2 JP3039950B2 JP2075952A JP7595290A JP3039950B2 JP 3039950 B2 JP3039950 B2 JP 3039950B2 JP 2075952 A JP2075952 A JP 2075952A JP 7595290 A JP7595290 A JP 7595290A JP 3039950 B2 JP3039950 B2 JP 3039950B2
- Authority
- JP
- Japan
- Prior art keywords
- slag
- spherical
- cement
- particles
- particle size
- 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.)
- Expired - Lifetime
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【発明の詳細な説明】 「産業上の利用分野」 この発明は、スラグセメントの製造に好適なスラグに
係り、特に流動性が良くしかも安価な材料となるスラグ
セメント用球状スラグとその製造方法に関する。Description: TECHNICAL FIELD The present invention relates to a slag suitable for producing slag cement, and more particularly to a spherical slag for slag cement which has good fluidity and is inexpensive and a method for producing the same. .
「従来の技術」 スラグは、熔錬をはじめ炉で金属を融解するときに融
剤の添加により意識的に生成される人工的な混合物で、
SiO2を主成分とするものであり、高炉セメント、れん
が、バラスなどに利用されている。"Conventional technology" Slag is an artificial mixture that is consciously created by the addition of flux when melting metals in furnaces, including smelting.
It is mainly composed of SiO 2 and is used for blast furnace cement, brick, ballast and the like.
ところで、このようなスラグを製品に調整するには、
炉から排出される塊状または砂状のものをチューブミル
や縦型ミルなどで粉砕して適当な粒度に調整し、その後
必要に応じて石膏等を添加し、さらに微粉砕して製品と
する。By the way, to adjust such a slag to a product,
The lump or sandy material discharged from the furnace is pulverized by a tube mill or a vertical mill or the like to adjust to an appropriate particle size, and thereafter, if necessary, gypsum or the like is added and further pulverized to obtain a product.
「発明が解決しようとする課題」 しかしながら、このようにして得られたスラグにあっ
ては、スラグが粉砕により角張った形状となることから
粒子間の摩擦抵抗が大きく、よって流動性および充填性
にやや難がある。"Problems to be Solved by the Invention" However, in the slag thus obtained, since the slag is formed into an angular shape by pulverization, the frictional resistance between the particles is large, and therefore, the fluidity and the filling property are reduced. There is some difficulty.
「課題を解決するための手段」 そこでこの発明における請求項１および２記載のスラ
グセメント用球状スラグとその製造方法では、高温火炎
中に平均粒径40μｍ以下のスラグ粒子を通過させて溶融
または半溶融状態とし、次いでこれを冷却して球状スラ
グを得ることにより上記課題を解決した。[Means for Solving the Problems] Therefore, in the spherical slag for slag cement and the method for producing the slag cement according to claims 1 and 2 of the present invention, slag particles having an average particle diameter of 40 μm or less are passed through a high-temperature flame to be melted or semi-finished. The above problem was solved by bringing a molten state and then cooling it to obtain a spherical slag.
以下、本発明を請求項２に記載した発明に基づいて詳
しく説明する。Hereinafter, the present invention will be described in detail based on the invention described in claim 2.
まず、従来のスラグ、すなわち炉から副生された塊状
または砂状のものをチューブミルや縦型ミルなどで粉砕
して適当な粒度に調整し、さらに必要に応じて石膏等を
添加して得られたものを用意する。この場合に粒度調整
については、微粉砕後分級して平均粒径を40μｍ以下程
度、（例えば粒径範囲15〜55μｍ程度）にするのが好ま
しく、このような平均粒径に調整することにより、後述
する球状化処理後に得られた球状スラグは、その流動性
および充填性が十分に向上するものとなる。First, a conventional slag, that is, a lump or sandy by-product from the furnace is pulverized by a tube mill or a vertical mill to adjust to an appropriate particle size, and further added by gypsum or the like as necessary. Prepare the provided one. In this case, regarding the particle size adjustment, it is preferable to make the average particle size of about 40 μm or less (for example, about 15 to 55 μm) by finely pulverizing and then classifying. The spherical slag obtained after the spheroidizing treatment described later has a sufficiently improved fluidity and filling property.
次に、プロパン，ブタン，プロピレン，アセトン，水
素などの可燃ガスや、重油，軽油などの液体燃料または
石油、さらにはオイルコークスなどの固体燃料を燃料と
する火炎発生装置を用意し、この装置から火炎を発生せ
しめる。Next, a flame generator is prepared that uses a combustible gas such as propane, butane, propylene, acetone, or hydrogen, a liquid fuel such as heavy oil or light oil, or petroleum, or a solid fuel such as oil coke as a fuel. Creates a flame.
次いで、この火炎中に上記の平均粒径40μｍ以下のス
ラグ粒子を所定量ずつ供給し、これらを溶融または半溶
融化せしめた後、さらにこれらを冷却する。Next, the slag particles having an average particle size of 40 μm or less are supplied into the flame in a predetermined amount, and after being melted or semi-melted, the slag particles are further cooled.
すると、溶融または半溶融したスラグ粒子はその表面
張力で球状化する。ここで火炎温度としては、スラグの
種類によっても異なるが、少なくとも1000℃以上が必要
であり、1000℃より低いとスラグ粒子が十分溶融または
半溶融状態に至らず、したがってスラグ粒子が十分に球
状にならず好ましくない。また、火炎中での滞留時間と
しては、0.01〜0.02秒程度が好ましい。Then, the molten or semi-molten slag particles become spherical due to their surface tension. Here, the flame temperature varies depending on the type of slag, but at least 1000 ° C or higher is required.If the temperature is lower than 1000 ° C, the slag particles do not reach a sufficiently molten or semi-molten state. Not preferred. The residence time in the flame is preferably about 0.01 to 0.02 seconds.
このようにして得られた球状のスラグ、即ち球状スラ
グにあっては、個々の粒子が球形であることから粒子間
の摩擦抵抗が少なく、よって従来のスラグに比べ流動性
がよく、また粒度コントロールにより充填性も向上す
る。The spherical slag thus obtained, that is, the spherical slag, has a low frictional resistance between the particles because the individual particles are spherical, so that the fluidity is better than the conventional slag, and the particle size control. Thereby, the filling property is also improved.
「実施例」 以下、実施例により本発明をさらに具体的に説明す
る。"Example" Hereinafter, the present invention will be described more specifically with reference to examples.
（実施例１） 従来法により平均粒径40μｍのスラグ粉即ちスラグ粒
子を調整し、さらにこれを1200℃の火炎中に通過させて
球状化処理し、球状スラグを得た。(Example 1) A slag powder having an average particle diameter of 40 µm, that is, slag particles was prepared by a conventional method, and further passed through a flame of 1200 ° C to perform spheroidizing treatment to obtain a spherical slag.
得られた球状スラグの安息角を測定したところ30゜で
あった。また、比較のため従来のスラグ粉（球状化処理
前のスラグ粉）の安息角を測定したところ39゜であり、
球状化処理によってスラグ粉の流動性および充填性が向
上することが確認された。When the angle of repose of the obtained spherical slag was measured, it was 30 °. For comparison, the angle of repose of the conventional slag powder (slag powder before spheroidization) was measured to be 39 °,
It was confirmed that the spheroidizing treatment improved the fluidity and the filling property of the slag powder.
（実施例２） 実施例１で作製した球状スラグを用いてＢ種高炉セメ
ントを作製し、さらにこの高炉セメントをJIS標準モル
タルに基づいて試験した。なお、作製したＢ種高炉セメ
ントより以下に示すような配合で標準砂および水を加え
てモルタルを作製した。(Example 2) Class B blast furnace cement was produced using the spherical slag produced in Example 1, and this blast furnace cement was tested based on JIS standard mortar. A mortar was prepared by adding standard sand and water to the prepared Class B blast furnace cement with the following composition.
このモルタルの圧縮強度，曲げ強度，フロー値をJIS
標準モルタルに基づいて調べ、その結果を第１表に示
す。The compression strength, bending strength and flow value of this mortar
The test was carried out based on a standard mortar, and the results are shown in Table 1.
セメント;520g、標準砂;1040g 水 ;338g（W/C＝65％） また、比較のため球状化処理前の従来のスラグを用い
てＢ種高炉セメントを作製し、上記配合によりモルタル
を作製して同様にその圧縮強度，曲げ強度，フロー値を
調べ、その結果を第１表に併記する。Cement; 520 g, standard sand; 1040 g water; 338 g (W / C = 65%) For comparison, a Class B blast furnace cement was prepared using conventional slag before spheroidizing treatment, and a mortar was prepared by the above blending. Similarly, the compressive strength, bending strength, and flow value are examined, and the results are shown in Table 1.
第１表に示した結果より、実施例のものは比較例のも
のに比べ、圧縮強度，曲げ強度、フロー値のいずれにお
いても優れていることが確認された。 From the results shown in Table 1, it was confirmed that the example had better compressive strength, bending strength, and flow value than the comparative example.
「発明の効果」 以上説明したようにこの発明のスラグセメント用球状
スラグおよびその製造方法は、高温火炎中に平均粒径40
μｍ以下のスラグ粒子を通過させて溶融または半溶融状
態とし、その表面張力によってスラグ粒子を球状にする
ものである。これにより得られた球状スラグは、個々の
粒子が球形であることから粒子間の摩擦抵抗が少なく、
よって従来のスラグに比べ流動性がよく、また粒度コン
トロールにより充填性もよくなることから、例えば球状
スラグをセメントに添加して球状スラグを含有するスラ
グセメントを製造した場合、硬化後のセメント硬化体が
緻密なものとなり、また強度が従来のスラグセメントか
らなるものに比べ高いものとなる。“Effect of the Invention” As described above, the spherical slag for slag cement of the present invention and the method for producing the same have an average particle size of 40 ° C. during high-temperature flame.
The slag particles having a diameter of not more than μm are allowed to pass into a molten or semi-molten state, and the slag particles are made spherical by the surface tension. The resulting spherical slag has a low frictional resistance between the particles because the individual particles are spherical,
Therefore, the fluidity is better than conventional slag, and since the filling property is improved by controlling the particle size, for example, when a slag cement containing spherical slag is produced by adding spherical slag to cement, the hardened cement body after curing is obtained. It becomes dense and has higher strength than that made of conventional slag cement.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭64−72945（ＪＰ，Ａ) 特開 昭53−75191（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C04B 7/14 - 7/21 C04B 18/14 C04B 5/00 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-64-72945 (JP, A) JP-A-53-75191 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) C04B 7/14-7/21 C04B 18/14 C04B 5/00
Claims (2)
粒子を通過させて溶融または半溶融状態とし、次いでこ
れを冷却して得られたことを特徴とするスラグメント用
球状スラグ。1. A spherical slag for slag, obtained by passing slag particles having an average particle size of 40 μm or less through a high-temperature flame into a molten or semi-molten state, and then cooling it.
粒子を通過させて溶融または半溶融状態とし、次いでこ
れを冷却することを特徴とするスラグメント用球状スラ
グの製造方法。2. A method for producing a spherical slag for slag, wherein slag particles having an average particle size of 40 μm or less are passed through a high-temperature flame to be in a molten or semi-molten state, and then cooled.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2075952A JP3039950B2 (en) | 1990-03-26 | 1990-03-26 | Spherical slag for slag cement and its production method |
| US07/754,733 US5253991A (en) | 1989-11-20 | 1991-09-04 | Apparatus for producing spheroidal inorganic particulate material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2075952A JP3039950B2 (en) | 1990-03-26 | 1990-03-26 | Spherical slag for slag cement and its production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03275543A JPH03275543A (en) | 1991-12-06 |
| JP3039950B2 true JP3039950B2 (en) | 2000-05-08 |
Family
ID=13591068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2075952A Expired - Lifetime JP3039950B2 (en) | 1989-11-20 | 1990-03-26 | Spherical slag for slag cement and its production method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3039950B2 (en) |
-
1990
- 1990-03-26 JP JP2075952A patent/JP3039950B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03275543A (en) | 1991-12-06 |
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