JPH01239042A - Production of expanded slag - Google Patents
Production of expanded slagInfo
- Publication number
- JPH01239042A JPH01239042A JP6389488A JP6389488A JPH01239042A JP H01239042 A JPH01239042 A JP H01239042A JP 6389488 A JP6389488 A JP 6389488A JP 6389488 A JP6389488 A JP 6389488A JP H01239042 A JPH01239042 A JP H01239042A
- Authority
- JP
- Japan
- Prior art keywords
- slag
- molten
- cooling water
- slope
- vaporized gas
- 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
- 239000002893 slag Substances 0.000 title claims abstract description 112
- 238000004519 manufacturing process Methods 0.000 title claims description 19
- 239000000498 cooling water Substances 0.000 claims abstract description 19
- 238000005187 foaming Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 52
- 238000000034 method Methods 0.000 abstract description 9
- 238000001816 cooling Methods 0.000 abstract description 6
- 230000005484 gravity Effects 0.000 abstract description 5
- 239000004566 building material Substances 0.000 abstract description 2
- 239000000969 carrier Substances 0.000 abstract description 2
- 239000003054 catalyst Substances 0.000 abstract description 2
- 239000003337 fertilizer Substances 0.000 abstract description 2
- -1 various filters Substances 0.000 abstract description 2
- 239000002361 compost Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 22
- 238000002474 experimental method Methods 0.000 description 11
- 229910002804 graphite Inorganic materials 0.000 description 6
- 239000010439 graphite Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、高炉、転炉あるいは電気炉等で発生する溶融
スラグを、植物栽培用培土、肥料、建材、各種フィルタ
、触媒担体等として有効利用するための発泡化スラグの
製造方法に関する。Detailed Description of the Invention (Field of Industrial Application) The present invention utilizes molten slag generated in blast furnaces, converters, electric furnaces, etc. as potting soil for plant cultivation, fertilizer, building materials, various filters, catalyst carriers, etc. The present invention relates to a method for producing foamed slag for use.
（従来の技術）
従来、高炉で発生した溶融スラグは、徐冷して破砕、整
粒したものが道路用路盤材やコンクリート用粗骨材とし
て古くから使用されている他、微粉砕したものがセメン
トの原料として使用されている。近年は、水で象、冷破
砕して水砕スラグとして使用されるものが増大し、セメ
ントに混合して利用されている。(Conventional technology) Molten slag generated in blast furnaces has been slowly cooled, crushed, and sized and used as road base material and coarse aggregate for concrete for a long time. Used as a raw material for cement. In recent years, the use of granulated slag by cold crushing with water has increased, and it is used by mixing it with cement.
転炉等で発生した溶融スラグは、徐冷して破砕し、磁選
等により金属鉄を回収した後、路盤材やコンクリート用
粗骨材として使用されているが、技術的問題等があって
使用量が少なく、多くは埋立て等に使用されている。Molten slag generated in converters, etc. is slowly cooled and crushed, and metal iron is recovered through magnetic separation, etc., and then used as roadbed material and coarse aggregate for concrete, but there are technical problems that prevent its use. The amount is small, and most of it is used in landfills.
さらに、最近は前記水砕スラグの製法を改善して、溶融
スラグを水砕するに際し、発泡化して軽量スラグとし、
溶融スラグの利用拡大を図ったものが知られている。Furthermore, recently, the manufacturing method of the granulated slag has been improved, and when pulverizing the molten slag, it is foamed to form a lightweight slag.
There are known devices that aim to expand the use of molten slag.
例えば、特公昭５７−２８３８１号公報には、溶融高炉
スラグにガス状の窒素富化化合物を添加してこのスラグ
中の結合窒素を増加させた後、水の存在下に冷却又は水
砕化して軽量スラグを製造し、この軽量スラグが培土等
に使用し得ることが記載されている。For example, Japanese Patent Publication No. 57-28381 discloses that after adding a gaseous nitrogen-rich compound to molten blast furnace slag to increase the bound nitrogen in the slag, the slag is cooled or granulated in the presence of water. It is described that a lightweight slag is produced and that this lightweight slag can be used for cultivation soil, etc.
また、特公昭６２−１０９４４号公報には、溶融スラグ
を水中に投入し、軽石状スラグ即ち発泡化スラグを作る
方法が提示されている。Furthermore, Japanese Patent Publication No. 10944/1983 proposes a method of producing pumice-like slag, that is, foamed slag, by pouring molten slag into water.
（発明が解決しようとする課題）
上記従来技術に述べたように、最近は溶融スラグの利用
拡大を図るために水砕スラグの発泡化が検討されている
が、未だ、本格的な実用化には到っていない、この理由
は、前記特公昭５７−２８３８１号公報等に示されてい
るように、水砕化する前に、溶融スラグに化合物を添加
するので、発泡化スラグの製造工程を複雑にし、コスト
的に高いものになるためである。また、特公昭６２−１
０９４４号公報に示される方法は、溶融スラグを造粒せ
ずにそのまま水中に投入するものであるため、得られる
発泡化スラグの品質のばらつきが大きいという問題点が
ある。(Problems to be Solved by the Invention) As mentioned in the above-mentioned prior art, foaming of granulated slag has recently been considered in order to expand the use of molten slag, but full-scale practical application has yet to be achieved. The reason for this is that, as shown in the above-mentioned Japanese Patent Publication No. 57-28381, compounds are added to the molten slag before it is granulated, so the manufacturing process of foamed slag is This is because it becomes complicated and expensive. Also, special public service 1986-1
The method disclosed in Japanese Patent No. 0944 involves putting the molten slag directly into water without granulating it, so there is a problem in that the quality of the foamed slag obtained varies widely.
本発明はこの様な事情に着目してなされたものであって
、その目的は従来のものがもつ以上のような問題点を解
消し、簡単な製造工程で発泡化の度合いが大きい発泡化
スラグを製造でき、且つ発泡化スラグの品質の安定化が
図れる発泡化スラグの製造方法を提供しようとするもの
である。The present invention was made in view of these circumstances, and its purpose is to solve the above-mentioned problems of conventional products and to produce foamed slag with a high degree of foaming through a simple manufacturing process. It is an object of the present invention to provide a method for producing foamed slag that can produce foamed slag and stabilize the quality of the foamed slag.
（課題を解決するための手段）
上記の目的を達成するために、本発明は次のような構成
の発泡化スラグの製造方法としている。(Means for Solving the Problems) In order to achieve the above object, the present invention has a method for producing foamed slag having the following configuration.
即ち、本発明は、溶融スラグを冷却水中に／＆滴すると
ともに、そのＩｆｉ化した溶融スラグが冷却・凝固され
るまでの間に、液滴中の溶融スラグと冷却水の気化ガス
とを接触せしめてスラグを発泡化させることを特徴とす
る発泡化スラグの製造方法である。That is, in the present invention, the molten slag is dropped into cooling water, and the molten slag in the droplets is brought into contact with the vaporized gas of the cooling water until the Ifi-formed molten slag is cooled and solidified. This is a method for producing foamed slag, which is characterized by at least foaming the slag.
（作 用）
？＆滴化したスラグが冷却・凝固されるまでの間におい
て、冷却当初は部分的に凝固が始まり、冷却の進行と共
に凝固部分が増えていくが、完全に凝固するまでは溶融
部分が凝固部分と共に存在する。本発明は、前述したよ
うに、この溶融部分と冷却水の気化ガスとを接触せしめ
るようにしている。(effect)? & Before the slag that has become droplets is cooled and solidified, it begins to solidify partially at the beginning of cooling, and as the cooling progresses, the solidified portion increases, but until it completely solidifies, the molten portion will continue to solidify along with the solidified portion. exist. In the present invention, as described above, this molten portion is brought into contact with the vaporized gas of the cooling water.
このようにスラグの溶融部分と冷却水の気化ガスとを接
触せしめると、この気化ガスが冷却過程でスラグ中に閉
じ込められ、泡（気孔）を形成するので、スラグが発泡
化されることとなる。When the molten part of the slag is brought into contact with the vaporized gas of the cooling water, this vaporized gas is trapped in the slag during the cooling process and forms bubbles (pores), resulting in the slag becoming foamed. .
また、スラグの冷却過程で、溶融スラグ中のＮ等がガス
となり、このガスが閉じ込められて泡（気孔）を形成し
、スラグが発泡化されるが、この発泡化の度合いに比較
し、上記冷却水の気化ガスがスラグ中に閉じ込められる
ことによる発泡化の度合いは掻めて大きい、溶融スラグ
中のＮ等により発生するガス量に比較し、冷却水の気化
ガス量は、格段に多いからである。In addition, during the cooling process of the slag, N, etc. in the molten slag becomes gas, and this gas is trapped to form bubbles (pores), causing the slag to foam. The degree of foaming caused by the vaporized gas of the cooling water being trapped in the slag is extremely large, as the amount of vaporized gas of the cooling water is much larger than the amount of gas generated by N, etc. in the molten slag. It is.
上記気化ガスによる発泡化の度合いを大きくするには、
気化ガスの発生速度を大きくして気化ガスを充分発生さ
せること、そして、その気化ガスをスラグ中の溶融部分
に充分接触せしめること、即ち、気化ガスがスラグ中に
閉じ込められるに充分な時間接触せしめることが望まれ
る。To increase the degree of foaming caused by the vaporized gas,
To sufficiently generate vaporized gas by increasing the generation rate of vaporized gas, and to bring the vaporized gas into sufficient contact with the molten portion of the slag, that is, to make the vaporized gas contact for a sufficient period of time to be trapped in the slag. It is hoped that
従って、液滴化したスラグに対する水の量は、従来の水
砕スラグ製造に比して格段に少ない事が望ましく、水砕
スラグの如くこの水の量が多く、且つ水圧により微細粒
化及び象、冷された場合には、この気化ガスによる発泡
化現象は生じない。Therefore, it is desirable that the amount of water in the dropletized slag is much smaller than in conventional granulated slag production. , when it is cooled, this foaming phenomenon due to the vaporized gas does not occur.
尚、使用する冷却水の温度は、比較的高い方が気化ガス
の発生速度を大きくする点では良いが、あまり高過ぎる
と冷却効果が低下するため、溶融スラグの量や温度に応
じて適当な冷却水の温度を選定すれば良い。Regarding the temperature of the cooling water used, it is better to increase the rate of generation of vaporized gas if the temperature is relatively high, but if it is too high, the cooling effect will decrease, so it should be adjusted appropriately depending on the amount and temperature of molten slag. All you have to do is select the temperature of the cooling water.
（実施例） 本発明の実施例を、以下に説明する。(Example) Examples of the invention are described below.
員土災施貫
第１実施例に係る発泡化スラグの製造に用いた装置およ
び発泡化スラグの製造状況を第１図に示す。第１図に示
すように、この装置は、鉄板製傾斜台（１）と、その上
方に位置する黒鉛ルツボ（２）と、傾斜台（１）の上部
に配された流水ノズル（３）と、傾斜台（１）の上方に
位置するスプレーノズル（４）を有するものである。尚
、傾斜台（１）の傾斜角度は２０’ 、ｆｌＪｉ斜台（
１）の長さは３００ｏＩＩＩ１ｗである。流水ノズル（
３）及びスプレーノズル（４）は可動式であり、その配
置位置を変化できるものである。また、黒鉛ルツボ（２
）は、可動式であり、その底部に直径５〜７ｍｍの孔（
５）を有し、且つこの孔（５）の開閉を行うためのスト
ンバ（図示していない）を存している。FIG. 1 shows the equipment used for producing the foamed slag and the state of production of the foamed slag according to the first embodiment of the earth disaster operation. As shown in Figure 1, this device consists of a steel plate inclined table (1), a graphite crucible (2) located above it, and a running water nozzle (3) arranged at the top of the inclined table (1). , and has a spray nozzle (4) located above the ramp (1). The tilt angle of the tilt table (1) is 20', and the flJi tilt table (
The length of 1) is 300oIII1w. Running water nozzle (
3) and the spray nozzle (4) are movable, and their positions can be changed. In addition, a graphite crucible (2
) is movable and has a hole (5 to 7 mm in diameter) at its bottom.
5), and a stone bar (not shown) for opening and closing this hole (5).
上記装置を使用し、高炉で発生した溶融スラグについて
、発泡化スラグの製造を実施した。尚、この溶融スラグ
の化学成分は、第１表に示すものである。Using the above apparatus, foamed slag was produced from molten slag generated in a blast furnace. The chemical components of this molten slag are shown in Table 1.
先ず、流水ノズル（３）を所定の位置に配し、そのノズ
ル（３）より６０°Ｃの冷却水（６）を流し、傾斜台（
１）の表面に全長２５００ｍｍの流水斜面（８）を形成
させた。流水斜面（８）の傾斜角度は２０°となってい
る。First, a running water nozzle (3) is placed at a predetermined position, cooling water (6) at 60°C is flowed from the nozzle (3), and a tilting table (
A running water slope (8) with a total length of 2500 mm was formed on the surface of 1). The inclination angle of the flowing water slope (8) is 20°.
ここで、上記の如く、流水斜面（８）の全長を２５００
ａｍとし、且つその傾斜角度を２００ としたのは、後
述の液滴化したスラグθ０）が流水斜面（８）上を流下
する過程において、高温のスラグにより冷却水を加熱し
て気化ガスを充分発生させ、その気化ガスをスラグ中の
溶融部分に充分接触させるためである。尚、この流水斜
面を用いる方法の場合において、スラグの溶融部分と冷
却水の気化ガスとを接触せしめて発泡化の度合いが大き
い発泡化スラグを安定して製造できる流水斜面は、その
長さを２ｍ以上とし、且つその傾斜角度を１５〜３０°
としたものである。Here, as mentioned above, the total length of the running water slope (8) is 2500
am, and its inclination angle was set to 200. The reason why the slag θ0), which will be described later, flows down on the flowing water slope (8), the cooling water is heated by the high-temperature slag and the vaporized gas is sufficiently released. This is to make the vaporized gas sufficiently contact the molten part of the slag. In the case of this method using a running water slope, the length of the running water slope is such that it can stably produce foamed slag with a high degree of foaming by bringing the molten part of the slag into contact with the vaporized gas of the cooling water. 2m or more, and the angle of inclination is 15-30°
That is.
次いで、１４８０°Ｃの溶融スラグを黒鉛ルツボ（２）
に導入しながら、導入された熔融スラグ（９）を黒鉛ル
ツボ（２）の孔（５〕から流水斜面（８）の最も上部（
ノズル（３）より噴出した冷却水（６）が傾斜台（１）
と衝突する位置）に流下させた。このとき、スプレーノ
ズル（４）より６０°Ｃのスプレー状の水（７）を噴出
して、流水斜面（８）の最も上部に散布した。尚、流水
斜面（８）上の流水量と溶融スラグ（９）の流下量との
比が５：１になるようにした。Next, the molten slag at 1480°C was placed in a graphite crucible (2).
While introducing the molten slag (9) into the graphite crucible (2), the introduced molten slag (9) is passed through the hole (5) of the graphite crucible (2) to the top (8) of the flowing water slope (8).
The cooling water (6) spouted from the nozzle (3) is connected to the slope (1)
(the position where it collides with the At this time, water (7) in the form of a spray at 60° C. was ejected from the spray nozzle (4) and sprayed on the uppermost part of the running water slope (8). Note that the ratio of the amount of water flowing on the flowing water slope (8) to the amount of flowing down the molten slag (9) was set to 5:1.
流下した溶融スラグ（９）は、流水斜面（８）最上部と
衝突し、この衝突により分散し、液滴化し、この液滴化
したスラグ０■は流水斜面（８）を流下していく。そし
て、スラグ００）は流水斜面（８）から落下し、回収さ
れた。尚、スラグ００）が流下していく距離は、流水斜
面（８）の全長に等しいものである。The flowing down molten slag (9) collides with the top of the flowing water slope (8), and is dispersed and turned into droplets by this collision, and this dropletized slag 0■ flows down the flowing water slope (8). Then, the slag 00) fell from the running water slope (8) and was collected. Note that the distance that the slag 00) flows down is equal to the total length of the flowing water slope (8).
このようにして得られた発泡化スラグの嵩比重（単位容
積当たりの重量：Ｍｇ／ｊりを、従来の方法で得られる
水砕スラグ及び徐冷スラグの嵩比重とともに第２表に示
す０本発明に係る発泡化スラグの嵩比重は０．４〜０．
６Ｋｇ／ｌ であり、従来の方法で得られるものに比
べて格段に軽量化されている。The bulk specific gravity (weight per unit volume: Mg/j) of the foamed slag thus obtained is shown in Table 2 along with the bulk specific gravity of the granulated slag and slowly cooled slag obtained by the conventional method. The foamed slag according to the invention has a bulk specific gravity of 0.4 to 0.
6 kg/l, which is much lighter than that obtained by conventional methods.
策ｌ実施±
第１実施例に係る発泡化スラグの製造方法とほぼ同様の
製造方法により、発泡化スラグの製造を実施した。第１
実施例と異なる点は、流水斜面（８）の全長を３５００
ｍｍとし、且つ流水斜面（８）の傾斜角度を３０’ と
した点だけである。尚、流水斜面（８）の全長および傾
斜角度を上記の如く設定したのは、第１実施例の場合と
同様、気化ガスをスラグ中の溶融部分に充分接触させる
ためである。Implementation of Plan 1 A foamed slag was manufactured using a manufacturing method substantially similar to that of the foamed slag according to the first example. 1st
The difference from the example is that the total length of the running water slope (8) is 3500 mm.
mm, and the inclination angle of the flowing water slope (8) is 30'. The reason why the entire length and inclination angle of the flowing water slope (8) are set as described above is to bring the vaporized gas into sufficient contact with the molten portion of the slag, as in the first embodiment.
この結果、第３表に示すように発泡化スラグが得られ（
実験ＮＯ，２） 、そしてこの発泡化スラグは、第１実
施例と同様、従来の方法で得られるものに比べて格段に
軽量化されたものであった。As a result, foamed slag was obtained as shown in Table 3 (
Experiment No. 2) As in the first example, this foamed slag was much lighter in weight than that obtained by the conventional method.
この他、流水斜面（８）の全長を２０００ｍｎ＋とじ、
且つ流水斜面（８）の傾斜角度を１５°としたもの（実
験Ｎ。In addition, the total length of the running water slope (8) is 2000mm+,
In addition, the inclination angle of the flowing water slope (8) was 15° (Experiment N).
、３）、或いは流水斜面（８）の全長を２０００ｍｍと
し、且つ流水斜面（８）の傾斜角度を３００ としたも
の（実験Ｎｏ、４） 、或いは流水斜面（８）の全長を
３５００１１−とし、且つ流水斜面（８）の傾斜角度を
１５°としたもの（実験Ｎｏ、５）も実施した。尚、こ
れらの流水斜面（８）の全長および傾斜角度も、第１実
施例の場合と同様、気化ガスをスラグ中の溶融部分に充
分接触させるために設定したものである。, 3), or the total length of the running water slope (8) is 2000 mm and the inclination angle of the running water slope (8) is 300 (Experiment No. 4), or the total length of the running water slope (8) is 350011-, In addition, an experiment in which the inclination angle of the flowing water slope (8) was 15° was also conducted (Experiment No. 5). Incidentally, the overall length and angle of inclination of these water-flowing slopes (8) are also set in order to bring the vaporized gas into sufficient contact with the molten portion of the slag, as in the case of the first embodiment.
この結果、これらの方法によっても、第３表に示すよう
に発泡化スラグが得られ、そしてこれらの発泡化スラグ
は、第１実施例と同様、従来の方法で得られるものに比
べて格段に軽量化されたものであった。As a result, foamed slags can be obtained by these methods as shown in Table 3, and these foamed slags, as in the first example, have significantly higher slags than those obtained by conventional methods. It was lightweight.
止較桝土
第１実施例に係る発泡化スラグの製造方法とほぼ同様の
製造方法により、発泡化スラグの製造を実施した。第１
実施例と異なる点は、流水斜面（８）の全長を１５０抛
彌とし、且つ流水斜面（８）の傾斜角度を３５°とした
点だけである。尚、このように流水斜面（８）全長を短
く、且つその傾斜角度を大きくすると、スラグ００）が
流水斜面（８）から落下するまでの時間が短くなり、そ
の結果気化ガスがスラグ中の溶融部分に充分接触しなく
なる。A foamed slag was manufactured using a manufacturing method substantially similar to the method for manufacturing the foamed slag according to the first example. 1st
The only difference from the embodiment is that the total length of the running water slope (8) was 150 mm, and the inclination angle of the running water slope (8) was 35°. In addition, by shortening the overall length of the running water slope (8) and increasing its inclination angle, the time taken for the slag 00) to fall from the running water slope (8) becomes shorter, and as a result, the vaporized gas melts in the slag. There is no sufficient contact with the parts.
この結果、第３表に示すように得られたものは水砕スラ
グ状のものであり（実験Ｎｏ、６） 、発泡化度合いが
大きい発泡化スラグは得られなかった。As a result, as shown in Table 3, the product obtained was in the form of granulated slag (Experiment No. 6), and a foamed slag with a high degree of foaming was not obtained.
この他、流水斜面（８）の全長を３５００！Ｉｌとし、
且つ流水斜面（８）の傾斜角度を３５°としたものも実
施したが、第３表に示すように得られたものは水砕スラ
グ状のものであり（実験Ｎｏ、７） 、発泡化度合いが
大きい発泡化スラグは得られなかった。In addition, the total length of the running water slope (8) is 3500! As Il,
In addition, experiments were conducted in which the slope angle of the flowing water slope (8) was set to 35°, but as shown in Table 3, the obtained product was in the form of granulated slag (Experiment No. 7), and the degree of foaming was A foamed slag with a large value was not obtained.
また、流水斜面（８）の全長を１５００ｍｍとし、且つ
流水斜面（８）の傾斜角度を１５°としたもの（実験Ｎ
ｏ、８）、或いは流水斜面（８）の全長を１１００Ｏｆ
ｆｉとし、且つ流水斜面（８）の傾斜角度を１５°とし
たもの（実験Ｎ。In addition, the total length of the running water slope (8) was 1500 mm, and the inclination angle of the running water slope (8) was 15° (Experiment N
o, 8) or the total length of the running water slope (8) to 1100Of
fi, and the inclination angle of the flowing water slope (8) was 15° (Experiment N).
、９）も実施したが、いずれの場合も発泡化度合いが大
きい発泡化スラグは得られなかった。尚、この場合、一
部のスラグは流水斜面（８）上で停止するという現象が
生じた。, 9) were also carried out, but a foamed slag with a large degree of foaming could not be obtained in either case. In this case, a phenomenon occurred in which some of the slag stopped on the flowing water slope (8).
尚、流水斜面（８）の全長を２０００ｍｍとし、且つ流
水斜面（８）の傾斜角度を１０°としたもの（実９ Ｎ
ｏ、１０）、或いは流水斜面（８）の全長を３０００！
Ｉｌｍとし、且つ第１表 溶融スラグの成分
第２表 嵩比重（Ｋｇ／ｆｆ１）
第３表
流水斜面（８）の傾斜角度を１００ としたもの（実験
Ｎ。In addition, the total length of the running water slope (8) is 2000 mm, and the inclination angle of the running water slope (8) is 10° (actual 9 N).
o, 10), or the total length of the running water slope (8) is 3000!
Table 1 Molten slag composition Table 2 Bulk specific gravity (Kg/ff1) Third surface water slope (8) angle of inclination is 100 (Experiment N).
、１１）も実施したが、いずれの場合もスラグは流水斜
面（８）上で停止し、発泡化スラグの製造が全〈実施で
きなかった。, 11) were also carried out, but in both cases the slag stopped on the running water slope (8) and the production of foamed slag could not be carried out at all.
（発明の効果）
本発明の発泡化スラグの製造方法によれば、簡単な製造
工程で発泡化の度合いが極めて大きい発泡化スラグを製
造でき、且つ発泡化スラグの品質の安定化が図れる。(Effects of the Invention) According to the method for producing a foamed slag of the present invention, a foamed slag with an extremely high degree of foaming can be produced through a simple manufacturing process, and the quality of the foamed slag can be stabilized.
第１図は、実施例に係る発泡化スラグの製造装置および
製造状況を示す図である。
（＋１−−−一鉄板製傾斜台 （２） −−−一黒鉛
ルツボ（３）−−−一流水ノズル （４）−−−−
スプレーノズル（５）−−−一孔 （６）
−−−一冷却水（７）−二−水 （８）−
−−一流水斜面ｆ９）−−−一溶融スラグ ００）−−
−一液滴化したスラグ特許出願人 株式会社 神戸製
鋼所
代 理 人 弁理士 金丸 章−FIG. 1 is a diagram showing a foamed slag manufacturing apparatus and manufacturing status according to an example. (+1 - - Iron plate inclined table (2) - - Graphite crucible (3) - - First-class water nozzle (4) ----
Spray nozzle (5) --- one hole (6)
---1-Cooling water (7)-2-Water (8)-
--First water slope f9) --- Molten slag 00) --
−One-droplet slag patent applicant: Kobe Steel, Ltd. Representative Patent attorney: Akira Kanemaru−
Claims (1)
液滴化した溶融スラグが冷却・凝固されるまでの間に、
液滴中の溶融スラグと冷却水の気化ガスとを接触せしめ
てスラグを発泡化させることを特徴とする発泡化スラグ
の製造方法。(1) While dropping molten slag into cooling water, until the droplets of molten slag are cooled and solidified,
A method for producing foamed slag, which comprises foaming the slag by bringing molten slag in droplets into contact with vaporized gas of cooling water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6389488A JPH01239042A (en) | 1988-03-16 | 1988-03-16 | Production of expanded slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6389488A JPH01239042A (en) | 1988-03-16 | 1988-03-16 | Production of expanded slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01239042A true JPH01239042A (en) | 1989-09-25 |
Family
ID=13242463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6389488A Pending JPH01239042A (en) | 1988-03-16 | 1988-03-16 | Production of expanded slag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01239042A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05213638A (en) * | 1991-10-23 | 1993-08-24 | Pelt & Hooykaas Bv | Steel slug |
-
1988
- 1988-03-16 JP JP6389488A patent/JPH01239042A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05213638A (en) * | 1991-10-23 | 1993-08-24 | Pelt & Hooykaas Bv | Steel slug |
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