JP2000351656A - Slag reclaimed material, its production and use thereof - Google Patents
Slag reclaimed material, its production and use thereofInfo
- Publication number
- JP2000351656A JP2000351656A JP11166034A JP16603499A JP2000351656A JP 2000351656 A JP2000351656 A JP 2000351656A JP 11166034 A JP11166034 A JP 11166034A JP 16603499 A JP16603499 A JP 16603499A JP 2000351656 A JP2000351656 A JP 2000351656A
- Authority
- JP
- Japan
- Prior art keywords
- slag
- molten
- recycled
- granulated
- solidified
- 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
- 239000000463 material Substances 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 238000002844 melting Methods 0.000 claims abstract description 21
- 230000008018 melting Effects 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 239000000155 melt Substances 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- 239000002245 particle Substances 0.000 claims description 19
- 239000004567 concrete Substances 0.000 claims description 11
- 238000007711 solidification Methods 0.000 claims description 5
- 230000008023 solidification Effects 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 3
- 238000010298 pulverizing process Methods 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 3
- 229910001570 bauxite Inorganic materials 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 239000010426 asphalt Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000011669 selenium Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 239000011384 asphalt concrete Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B5/00—Treatment of metallurgical slag ; Artificial stone from molten metallurgical slag
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、スラグ再生材、その製
造方法および用途に関し、詳しくは、ゴミ等の廃棄物の
溶融処理炉などから大量に発生する水砕スラグを再資源
化してなるスラグ再生材と、この再資源化方法と、前記
スラグ再生材を利用したコンクリート製品とに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recycled slag material, a method for producing the slag and a use thereof, and more particularly, to a slag obtained by recycling granulated slag generated in a large amount from a furnace for melting waste such as garbage. The present invention relates to a recycled material, a method for recycling the same, and a concrete product using the recycled slag.
【０００２】[0002]
【従来の技術】家庭のゴミや産業廃棄物の焼却灰を溶融
したとき、溶融炉で大量のスラグが発生する。このスラ
グは、最初は、溶融した状態で溶融炉内に得られる。こ
の溶融スラグは、空気中に放置する、いわゆる放冷によ
り冷却することも出来るが、炉のスラグ排出口から出て
くる溶融スラグを放冷により冷却するのは時間がかか
り、能率的でない。しかも、冷却したスラグがスラグ排
出口にこびり付くので、ときどき溶融炉の運転を止めて
除去する作業も必要となる。そのため、一般には、スラ
グ排出口から出てくる溶融スラグを高圧水で吹き飛ばし
て急冷するようにしている。このようにして得られるの
が、いわゆる水砕スラグである。2. Description of the Related Art When melting incineration ash from household waste and industrial waste, a large amount of slag is generated in a melting furnace. The slag is initially obtained in a molten state in a melting furnace. This molten slag can be cooled by leaving it in the air, that is, so-called cooling, but it is time-consuming and inefficient to cool the molten slag coming out of the slag discharge port of the furnace by cooling. Moreover, since the cooled slag sticks to the slag discharge port, it is sometimes necessary to stop the operation of the melting furnace and remove it. Therefore, in general, the molten slag coming out of the slag discharge port is blown off with high-pressure water to be rapidly cooled. What is obtained in this way is what is called granulated slag.
【０００３】この毎日大量に発生する水砕スラグの処分
が、従来、問題になっている。水砕スラグは、微細粉末
状で得られるので、そのまま埋め立てなどに利用するこ
とも出来るが、このような用途は限られている。Conventionally, disposal of a large amount of granulated slag generated daily has been a problem. Since granulated slag is obtained in the form of fine powder, it can be used as such for landfills, but such uses are limited.
【０００４】[0004]
【発明が解決しようとする課題】そこで、本発明の課題
は、この水砕スラグの再資源化を図ることにある。An object of the present invention is to recycle the granulated slag.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決する、本
発明のスラグ再生材、その製造方法および用途は、以下
のとおりである。スラグ再生材は水砕スラグの溶融固化
物からなる。スラグ再生材の製造方法は、下記工程(a)
、(b) を含む。Means for Solving the Problems The slag recycled material of the present invention which solves the above-mentioned problems, its production method and use are as follows. The slag recycled material is made of a molten solidified granulated slag. The method for producing recycled slag is as follows:
, (B).
【０００６】(a) 水砕スラグを再溶融して溶融スラグを
得る溶融工程。 (b) 溶融スラグを空冷により固化して固化スラグを得る
固化工程。 本発明にかかるスラグ再生材の製造方法において、前記
溶融工程は、融液の表面温度が１４５０〜１６５０℃に
なるように水砕スラグを加熱する工程であることが出来
る。前記固化工程は、溶融スラグに結晶核を入れて固化
する工程であることが出来る。前記空冷は放冷であるこ
とが出来る。前記固化工程は、溶融スラグを型に入れて
固化する工程であることが出来る。本発明にかかるスラ
グ再生材の製造方法は、下記工程(c) をさらに含むこと
が出来る。(A) A melting step of remelting the granulated slag to obtain a molten slag. (b) A solidification step of solidifying the molten slag by air cooling to obtain a solidified slag. In the method for producing a recycled slag material according to the present invention, the melting step may be a step of heating the granulated slag such that the surface temperature of the melt is 1450 to 1650 ° C. The solidification step can be a step of solidifying molten slag by adding crystal nuclei. The air cooling can be allowed to cool. The solidifying step may be a step of solidifying the molten slag by putting it in a mold. The method for producing a recycled slag material according to the present invention can further include the following step (c).
【０００７】(c) 固化スラグを粉砕し整粒してスラグ粒
子を得る粒子化工程。 本発明の用途である、コンクリート製品は、前記スラグ
再生材を骨材や化粧材などとして含む。(C) a step of pulverizing and sizing the solidified slag to obtain slag particles. A concrete product, which is an application of the present invention, includes the slag recycled material as an aggregate or a decorative material.
【０００８】[0008]
【発明の実施の形態】以下では、本発明にかかるスラグ
再生材の製造方法の好ましい実施形態の一例を、図１に
基づいて具体的に説明する。水砕スラグは、前述したと
おりの、従来得られているスラグである。水砕スラグ
は、少し混ざっている粗大粒子や塊を除くと、一般に、
粒径０．５mm以上、２．５mm以下の粒子が全体の９０重
量％以上を占める微細粒子であり、このままでは、土砂
がわりに埋め立てに利用するしかなかった。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an example of a preferred embodiment of a method for producing a recycled slag material according to the present invention will be specifically described with reference to FIG. Granulated slag is slag conventionally obtained as described above. Granulated slag is generally excluding coarse particles and clumps that are slightly mixed.
Particles having a particle size of 0.5 mm or more and 2.5 mm or less are fine particles occupying 90% by weight or more of the whole.
【０００９】本発明の方法では、まず、この水砕スラグ
を再溶融して溶融スラグを得る（工程(a) ）。原料であ
る水砕スラグは天日等で乾燥しておいて使用することが
好ましい。水分が多いと溶融の際に水蒸気爆発を起こす
危険性があるからである。この再溶融は、例えば、２．
５〜３．５トンの水砕スラグを、アーク式電気溶融炉等
の溶融炉に投入し、２０００〜４０００ワットの電力で
１〜４時間掛けて、行う。この溶融工程は、バッチ式で
も良いし連続式でも良いが、限定する訳ではないが、炉
内に生じた融液の表面温度を目安にして進めることが好
ましい。例えば、融液の表面温度が１４５０〜１６５０
℃になるように水砕スラグを加熱するのである。融液状
態での滞留時間を長くしておくと、スラグとメタル（鉄
など）の分離が進むので、磁石を利用する等の方法で、
メタルを除くことが出来る。このようにしておけば、ス
ラグ再生材やその利用品（二次加工品）に錆が発生しに
くくなる。In the method of the present invention, the granulated slag is first remelted to obtain a molten slag (step (a)). It is preferable to use the granulated slag as a raw material after drying in the sun or the like. This is because a large amount of water may cause a steam explosion during melting. This re-melting is performed, for example, in the form of
The granulated slag of 5 to 3.5 tons is charged into a melting furnace such as an electric arc melting furnace, and the electric power of 2000 to 4000 watts is applied for 1 to 4 hours. This melting step may be a batch type or a continuous type, but is not limited thereto, but preferably proceeds with the surface temperature of the melt generated in the furnace as a guide. For example, if the surface temperature of the melt is 1450-1650
The granulated slag is heated to ℃. If the residence time in the molten state is extended, the separation of slag and metal (such as iron) progresses.
Metal can be removed. By doing so, rust is less likely to be generated on the recycled slag material and its use (secondarily processed product).
【００１０】次に、上のようにして得られた溶融スラグ
を空冷により固化して固化スラグを得る（工程(b) ）。
固化を単純に行った場合には、得られた固化スラグはガ
ラス質であるが、溶融スラグにボーキサイト、バン土頁
岩、電融アルミナ等の鉱石（例えば、粒径３０mm以下の
粒子）を入れておくと、結晶質となる。結晶核は融液の
突沸を防ぐため、炉内に予め入れておくのが好ましい
が、限定する訳ではない。この固化工程では、炉内に溶
融スラグがある量溜まった段階で、電気炉から電極を外
し炉を傾ける等して、溶融スラグを受鍋に流し込み、受
鍋を空気中に例えば２〜２．５時間放置するか、風を当
てて強制的に冷却したあと、インゴットを受鍋から取り
出し、さらに放冷する等する。受鍋を所望の形面を持つ
型に変えると、固化スラグ成形品（再生材１）を得るこ
とが出来る。Next, the molten slag obtained as described above is solidified by air cooling to obtain a solidified slag (step (b)).
When the solidification is simply performed, the obtained solidified slag is glassy, and the molten slag is filled with ore (eg, particles having a particle size of 30 mm or less) such as bauxite, ban shale, and fused alumina. Otherwise, it becomes crystalline. The crystal nuclei are preferably placed in a furnace in advance to prevent bumping of the melt, but are not limited thereto. In this solidification step, when a certain amount of molten slag has accumulated in the furnace, the electrode is removed from the electric furnace and the furnace is tilted or the like, and the molten slag is poured into the receiving pan, and the receiving pan is placed in the air, for example, in the range of 2-2. After leaving it for 5 hours or forcibly cooling it by blowing air, the ingot is taken out of the saucer and allowed to cool. When the receiving pan is changed to a mold having a desired shape, a solidified slag molded product (recycled material 1) can be obtained.
【００１１】上記インゴットを、例えば、粉砕し、整粒
すると、セメントコンクリートの骨材や化粧材など（再
生材２）にすることが出来る（粒子化工程(c) ）。粉砕
は、例えばジョークラッシャーなどを用いて行う。コン
クリート製品としては、例えば舗装用カラー平板、車道
境界縁石、ベンチなどがある。粒子化工程でのコンクリ
ートカラー平板の表面化粧骨材材に用いる場合は、例え
ば平均粒径を１〜５mmに揃える。アルファルトコンクリ
ートの骨材に用いる場合は、例えば粒径を１０mm以下に
揃える。コンクリートブロックの骨材に用いる場合は、
例えば平均粒径を５〜２０mmに揃える。セメントに対す
るスラグ再生材の配合割合は用途に応じて異なるが、ア
ルファルトコンクリートの場合は、例えば、アルファル
ト５〜６重量％、スラグ再生材５〜４０重量％、砕石そ
の他が残部である。When the ingot is crushed and sized, for example, it can be used as an aggregate or a decorative material for cement concrete (recycled material 2) (a granulation step (c)). The pulverization is performed using, for example, a jaw crusher. Concrete products include, for example, color flat plates for paving, roadway curbs, and benches. When used as a surface decorative aggregate of a concrete color flat plate in the particle forming step, for example, the average particle diameter is adjusted to 1 to 5 mm. In the case of using as an aggregate of asphalt concrete, for example, the particle size is adjusted to 10 mm or less. When used as aggregate for concrete blocks,
For example, the average particle size is adjusted to 5 to 20 mm. The mixing ratio of the recycled slag to cement varies depending on the application, but in the case of alfalt concrete, for example, 5 to 6% by weight of alfalt, 5 to 40% by weight of the recycled slag, crushed stones and the like are the rest.
【００１２】本発明にかかるスラグ再生材は、すり減り
減量が空冷再溶融スラグで３４．３重量％、結晶質再溶
融スラグで１９．４重量％程度であり、すり減り減量が
少なくて、アルファルト舗装の骨材に適している。本発
明にかかるスラグ再生材は、水砕スラグでは得られない
黒御影石風の色と光沢を持ち、化粧材としても適してい
る。The recycled slag material according to the present invention has an abrasion loss of about 34.3% by weight for air-cooled remelted slag and about 19.4% by weight of crystalline remelted slag. Suitable for aggregates. The recycled slag material according to the present invention has a black granite-like color and luster that cannot be obtained with granulated slag, and is also suitable as a decorative material.
【００１３】[0013]
【実施例】以下に、本発明の実施例を説明する。 −実施例１− 天日乾燥した水砕スラグ３．０トンを、最初に１．０ト
ンを一度に、その後は溶融状態を見ながら少しずつと言
うようにして、２．５時間を掛けて、宇治電化学工業
（株）製の電気溶融炉（アーク式）に投入し、合計３０
００ワットの電力で溶融した。その間、炉内に挿入した
熱電対で水砕スラグの表面温度を測定し、融液の表面温
度が１５５０±５０℃を保つように制御した。得られた
溶融スラグを内容積２．５m3の受鍋に移し、放冷により
固化して、固化スラグのインゴット（１個当たり平均重
量３，０００kg）を得た。得られた固化スラグは、分析
結果では、カドミウム（Ｃｄ）０．００１mg／リットル
以下、鉛（Ｐｂ）０．０１mg／リットル以下、砒素（Ａ
ｓ）０．０１mg／リットル以下、クロム（Ｔ−Ｃｒ）
０．０１mg／リットル以下、水銀（Ｔ−Ｈｇ）０．００
０５mg／リットル以下、セレン（Ｓｅ）０．０１mg／リ
ットル以下を含んでいた（これらの数値は１９９８年３
月厚生省指針に示された目標値を満たしている。）。Embodiments of the present invention will be described below. -Example 1-3.0 tons of granulated slag dried in the sun, 1.0 tons at a time, and then gradually while watching the molten state, take 2.5 hours. Into an electric melting furnace (arc type) manufactured by Uji Denka Kogyo Co., Ltd.
Melting was performed with an electric power of 00 watts. During that time, the surface temperature of the granulated slag was measured with a thermocouple inserted into the furnace, and the surface temperature of the melt was controlled so as to maintain 1550 ± 50 ° C. The obtained molten slag was transferred to a saucer having an internal volume of 2.5 m 3 , and solidified by cooling to obtain an ingot of solidified slag (average weight of 3,000 kg per piece). According to the analysis results, the obtained solidified slag contains cadmium (Cd) of 0.001 mg / liter or less, lead (Pb) of 0.01 mg / liter or less, and arsenic (A).
s) 0.01 mg / liter or less, chromium (T-Cr)
0.01 mg / liter or less, mercury (T-Hg) 0.00
Selenium (Se) 0.01 mg / liter or less (these figures are as of March 1998).
Meets the target values set forth in the Ministry of Health and Welfare guidelines. ).
【００１４】このスラグ・インゴットをジョークラッシ
ャー（１次クラッシャー：川崎重工業社製、型式番号Ｙ
Ｓ３０１８Ｐ／２次クラッシャー：川崎重工業社製、型
式番号ＹＳ３００８Ｈ）で粉砕し、篩分けすることによ
って、平均粒径３mm（スラグ再生品Ａ）、粒径１０mm以
下（スラグ再生品Ｂ）、平均粒径１０mm（スラグ再生品
Ｃ）の各スラグ粒子を得た。This slag ingot is used as a jaw crusher (primary crusher: model number Y, manufactured by Kawasaki Heavy Industries, Ltd.).
S3018P / secondary crusher: crushed by Kawasaki Heavy Industries, model number YS3008H) and sieved to obtain an average particle size of 3 mm (slag recycled product A), an average particle size of 10 mm or less (slag recycled product B), and an average particle size. Each slag particle of 10 mm (slag recycled product C) was obtained.
【００１５】得られたスラグ粒子（空冷再溶融スラグ）
は、洗い減量０．１重量％、絶乾比重２．７７、表乾比
重２．７８、吸水率０．４１％、すり減り減量３４．３
重量％、安定性１．６重量％（これらの数値は、ＪＩＳ
Ａ１１０３，Ａ１１１０，Ａ１１２２に基づく測定値
である）であり、コンクリート骨材規格値を満たしてい
た。Slag particles obtained (air-cooled remelted slag)
Is 0.1% by weight of washing loss, specific gravity of absolute dryness 2.77, specific gravity of surface dryness 2.78, water absorption 0.41%, abrasion loss 34.3
%, Stability 1.6% by weight (these figures are based on JIS
A1103, A1110, and A1122), which satisfies the concrete aggregate standard value.
【００１６】スラグ再生品Ａの２５８kgをセメント６４
５kg、化粧用骨材１０３２kg、砂１０３２kg、水１１７
kgに配合して表層のセメントスラリーを作り、砂１６１
１kg、砂利２８８kg、セメント４５０kgで基層のセメン
トスラリーを作り、プレス成形して舗装用コンクリート
カラー平板を得た。スラグ再生品Ｂの５６７kgを６号砕
石３８２．５kg、７号砕石１４２．５kg、粗砂１２７．
５kg、細砂１２７．５kg、石粉７０．５kg、をアスファ
ルト８２．５kgに配合してアスファルト合材を作り、道
路舗装用アスファルト合材を得た。258 kg of recycled slag product A is added to cement 64
5 kg, cosmetic aggregate 1032 kg, sand 1032 kg, water 117
kg to make a cement slurry of the surface layer.
A base layer cement slurry was prepared from 1 kg, 288 kg of gravel, and 450 kg of cement, and pressed to obtain a concrete color flat plate for pavement. 567 kg of recycled slag B is 382.5 kg of No. 6 crushed stone, 142.5 kg of No. 7 crushed stone, and coarse sand.
Asphalt mixture was prepared by mixing 5 kg, 127.5 kg of fine sand, and 70.5 kg of stone powder with 82.5 kg of asphalt to obtain an asphalt mixture for road pavement.
【００１７】−実施例２〜４− 溶融炉に予めボーキサイト（実施例２）、バン土頁岩
（実施例３）、電融アルミナ（実施例４）（いずれも粒
径３０mm以下の粒子）を入れておくようにしたほかは実
施例１と同じようにして、スラグ・インゴットを得た。
このインゴットは、結晶質であった。このインゴットを
実施例１と同様にして各スラグ粒子を得た。Examples 2-4 Bauxite (Example 2), ban shale (Example 3), and fused alumina (Example 4) (all particles having a particle size of 30 mm or less) were previously placed in a melting furnace. A slag ingot was obtained in the same manner as in Example 1 except that it was kept.
This ingot was crystalline. Each slag particle was obtained from this ingot in the same manner as in Example 1.
【００１８】得られたスラグ粒子（結晶質再溶融スラ
グ）は、洗い減量０．０７重量％、絶乾比重２．７２、
表乾比重２．７５、吸水率１．０８％、すり減り減量１
９．４重量％、安定性１．８重量％（これらの数値は、
ＪＩＳ Ａ１１０３，Ａ１１１０，Ａ１１２２に基づく
測定値である）であり、コンクリート骨材規格値を満た
していた。The obtained slag particles (crystalline remelted slag) had a washing loss of 0.07% by weight, an absolute dry specific gravity of 2.72,
Surface dry specific gravity 2.75, water absorption 1.08%, abrasion loss 1
9.4% by weight, stability 1.8% by weight (these figures are
This is a measured value based on JIS A1103, A1110, and A1122), which satisfies the concrete aggregate standard value.
【００１９】−実施例５− 炉で得られた溶融スラグを半球の楕円形の形を有する型
内に移して、成形品を得るようにするほかは、実施例１
と同じにした。Example 1 Example 1 except that molten slag obtained in a furnace is transferred into a mold having a hemispherical elliptical shape to obtain a molded product.
Same as.
【００２０】[0020]
【発明の効果】本発明にかかるスラグ再生材は、粒度や
形を整えてあるため、利用し易く、しかも、水砕スラグ
を有用に再資源化してなるため、安価である。本発明に
かかるスラグ再生材の製造方法は、一般に使用されてい
る溶融炉や粉砕機や整粒機などを用いて簡単に実施で
き、スラグ再生材を迅速安価に製造できる。The slag recycled material according to the present invention is easy to use because its grain size and shape are adjusted, and it is inexpensive because granulated slag is usefully recycled. The method for producing a recycled slag material according to the present invention can be easily carried out using a commonly used melting furnace, crusher, sizing machine, or the like, and can produce a recycled slag material quickly and inexpensively.
【００２１】本発明にかかるセメント製品は、本発明に
かかるスラグ再生材を骨材等として含む場合は安価であ
り、化粧材等として含む場合は安価で美しい。The cement product according to the present invention is inexpensive when the recycled slag according to the present invention is included as an aggregate or the like, and is inexpensive and beautiful when included as a decorative material or the like.
【図１】 本発明にかかるスラグ再生材の製造方法の実
施形態を表すフローチャート。FIG. 1 is a flowchart illustrating an embodiment of a method for producing a recycled slag material according to the present invention.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4D004 AA43 AB01 BA02 CA04 CA29 CA32 CA42 CB13 CB31 CB32 DA02 DA03 DA06 4G012 JK01 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4D004 AA43 AB01 BA02 CA04 CA29 CA32 CA42 CB13 CB31 CB32 DA02 DA03 DA06 4G012 JK01
Claims (8)
再生材。1. A slag recycled material comprising a molten and solidified granulated slag.
の製造方法。 (a) 水砕スラグを再溶融して溶融スラグを得る溶融工
程。 (b) 溶融スラグを空冷により固化して固化スラグを得る
固化工程。2. A method for producing a recycled slag material, comprising the following steps (a) and (b). (a) A melting step of remelting granulated slag to obtain a molten slag. (b) A solidification step of solidifying the molten slag by air cooling to obtain a solidified slag.
０〜１６５０℃になるように水砕スラグを加熱する工程
である、請求項２に記載のスラグ再生材の製造方法。3. The melting step, wherein the surface temperature of the melt is 145.
The method for producing a recycled slag material according to claim 2, which is a step of heating the granulated slag to a temperature of 0 to 1650 ° C.
れて固化する工程である、請求項２または３に記載のス
ラグ再生材の製造方法。4. The method for producing a recycled slag material according to claim 2, wherein said solidifying step is a step of solidifying molten slag by adding crystal nuclei.
でのいずれかに記載のスラグ再生材の製造方法。5. The method for producing a recycled slag material according to claim 2, wherein said air cooling is cooling.
固化する工程である、請求項２から５までのいずれかに
記載のスラグ再生材の製造方法。6. The method for producing a recycled slag material according to claim 2, wherein the solidifying step is a step of solidifying the molten slag in a mold.
５までのいずれかに記載のスラグ再生材の製造方法。 (c) 固化スラグを粉砕し整粒してスラグ粒子を得る粒子
化工程。7. The method for producing a recycled slag material according to claim 2, further comprising the following step (c). (c) a step of pulverizing and sizing the solidified slag to obtain slag particles.
ンクリート製品。8. A concrete product comprising the recycled slag according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11166034A JP2000351656A (en) | 1999-06-11 | 1999-06-11 | Slag reclaimed material, its production and use thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11166034A JP2000351656A (en) | 1999-06-11 | 1999-06-11 | Slag reclaimed material, its production and use thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000351656A true JP2000351656A (en) | 2000-12-19 |
Family
ID=15823729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11166034A Pending JP2000351656A (en) | 1999-06-11 | 1999-06-11 | Slag reclaimed material, its production and use thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000351656A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005329400A (en) * | 2004-04-22 | 2005-12-02 | Daido Steel Co Ltd | Method for stabilizing slag solidification product |
| JP2007091590A (en) * | 2006-10-23 | 2007-04-12 | Sumitomo Metal Ind Ltd | Stabilization treatment method for fluorine eluted from steel slag, and modified slag and its production method |
| US7739023B2 (en) * | 2005-12-17 | 2010-06-15 | Hyundai Motor Company | Adaptive cruise control system and method for vehicle |
-
1999
- 1999-06-11 JP JP11166034A patent/JP2000351656A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005329400A (en) * | 2004-04-22 | 2005-12-02 | Daido Steel Co Ltd | Method for stabilizing slag solidification product |
| JP4653531B2 (en) * | 2004-04-22 | 2011-03-16 | 大同特殊鋼株式会社 | Method for stabilizing slag solidified product |
| US7739023B2 (en) * | 2005-12-17 | 2010-06-15 | Hyundai Motor Company | Adaptive cruise control system and method for vehicle |
| JP2007091590A (en) * | 2006-10-23 | 2007-04-12 | Sumitomo Metal Ind Ltd | Stabilization treatment method for fluorine eluted from steel slag, and modified slag and its production method |
| JP4682118B2 (en) * | 2006-10-23 | 2011-05-11 | 住友金属工業株式会社 | Stabilization method of fluorine eluted from steel slag |
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