JPH0959046A - Waste molten slag processing equipment - Google Patents
Waste molten slag processing equipmentInfo
- Publication number
- JPH0959046A JPH0959046A JP7214633A JP21463395A JPH0959046A JP H0959046 A JPH0959046 A JP H0959046A JP 7214633 A JP7214633 A JP 7214633A JP 21463395 A JP21463395 A JP 21463395A JP H0959046 A JPH0959046 A JP H0959046A
- Authority
- JP
- Japan
- Prior art keywords
- water
- magnetic
- melt
- molten slag
- waste
- 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.)
- Withdrawn
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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Gasification And Melting Of Waste (AREA)
- Processing Of Solid Wastes (AREA)
- Disintegrating Or Milling (AREA)
Abstract
(57)【要約】
【課題】 廃棄物の溶融スラグを例えばコンクリート二
次製品等の骨材等として好適に使えるように処理する水
砕処理装置を提供する。
【解決手段】 廃棄物溶融炉から発生した溶融スラグ
を、水砕処理により非磁性溶融物と磁性溶融物とに分離
し系外に掻き出す装置と、混合状態で掻き出される両溶
融物を、非磁性溶融物と磁性溶融物とに仕分けする湿式
磁選装置とからなる廃棄物溶融スラグの処理装置におい
て、該掻き出し装置の上部に、非磁性溶融物と磁性溶融
物の混合物洗浄用の水噴霧装置を設置し、更に、水噴霧
装置で使用した用水を冷却塔の冷却用水の一部として利
用するようになした廃棄物溶融スラグの処理装置。
(57) Abstract: [PROBLEMS] To provide a water granulation treatment device for treating molten slag of waste so that it can be suitably used, for example, as an aggregate or the like of a secondary concrete product. SOLUTION: A molten slag generated from a waste melting furnace is separated into a non-magnetic melt and a magnetic melt by a water granulation process and is scraped out of the system, and both melts scraped in a mixed state are In a device for treating waste molten slag consisting of a magnetic melt and a wet magnetic separation device for sorting into a magnetic melt, a water spray device for washing a mixture of a non-magnetic melt and a magnetic melt is provided above the scraping device. A treatment device for waste molten slag that is installed and uses the water used in the water spray device as part of the cooling water for the cooling tower.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、都市ごみ、下水汚
泥、各種産業廃棄物、又はそれらを脱水、乾燥、焼却、
破砕処理等によって得られた中間処理物を加熱溶融し
て、土木用資材、コンクリート細骨材、表面化粧用骨材
用スラグ材として回収する廃棄物溶融スラグの処理装置
に関する。TECHNICAL FIELD The present invention relates to municipal waste, sewage sludge, various industrial wastes, or dehydration, drying, incineration,
The present invention relates to an apparatus for treating waste molten slag, which heats and melts an intermediate treated material obtained by crushing treatment and recovers it as a slag material for civil engineering materials, concrete fine aggregates, and surface makeup aggregates.
【０００２】[0002]
【従来の技術】かかる廃棄物を溶融処理した非磁性溶融
物と磁性溶融物の混合物を、水砕処理し、それを系外に
連続的に搬出する装置に関する技術は、特開昭４９−９
８０７０号公報に開示されている。また、非磁性溶融物
と磁性溶融物を同時に安全な方法で水砕化処理する方法
は、特公昭５９−２５１４３号公報に開示されている。2. Description of the Related Art A technique relating to an apparatus for subjecting a mixture of a non-magnetic melt and a magnetic melt obtained by melting such waste to a granulation process and continuously carrying it out of the system is disclosed in JP-A-49-9.
No. 8070 is disclosed. Further, a method of simultaneously granulating a non-magnetic melt and a magnetic melt by a safe method is disclosed in Japanese Patent Publication No. 59-25143.
【０００３】前記した特開昭４９−９８０７０号公報
は、廃棄物溶融物を水砕処理し、ベルトコンベアで連続
的に系外に搬出し、赤熱した非磁性溶融物と磁性溶融物
を取り扱う作業環境を向上させ、同時に処理時間を短く
し、処理スペースを小さくした技術である。また特公昭
５９−２５１４３号公報は、適正な水量、水圧の加圧水
により粒状化された水砕スラグを、水槽内外に水の流通
自在なケージで受けることにより、非磁性溶融物と磁性
溶融物の混合溶融物の安全な水砕化処理が行え、ハンド
リングを容易とした技術である。In the above-mentioned Japanese Patent Laid-Open No. 49-98070, the waste melt is subjected to water granulation treatment, continuously carried out of the system by a belt conveyor, and the red hot non-magnetic melt and magnetic melt are handled. It is a technology that improves the environment, at the same time shortens the processing time, and reduces the processing space. In addition, Japanese Patent Publication No. 59-25143 discloses that non-magnetic melt and magnetic melt can be obtained by receiving granulated slag granulated with pressurized water having an appropriate amount of water and pressure in a cage in which water can flow freely inside and outside a water tank. It is a technology that enables safe water granulation of the mixed melt and facilitates handling.
【０００４】これら両技術とも、水砕水には主に循環水
を使用しており、少量の補給水はあるものの、時間の経
過により、水は濁り、スラッジが溜まり、清浄な非磁性
溶融物と磁性溶融物を得るのは容易ではなかった。In both of these techniques, circulating water is mainly used for water granulation, and although there is a small amount of makeup water, over time, the water becomes cloudy, sludge accumulates, and a clean non-magnetic melt is formed. And it was not easy to obtain a magnetic melt.
【０００５】[0005]
【発明が解決しようとする課題】磁選機で仕分けされた
非磁性溶融物は、コンクリートブロック用細骨材、アス
ファルト混合物用細骨材等として、また磁性溶融物は重
量骨材としてそれぞれ利用価値があり、廃棄物の埋め立
て地不足が問題となっている現在、有効利用の促進が渇
望されている。Non-magnetic melts sorted by a magnetic separator have utility value as fine aggregates for concrete blocks, asphalt mixture fine aggregates, and magnetic melts as heavy aggregates. Therefore, at present, the shortage of landfills for waste is a problem, and there is a strong desire to promote effective use.
【０００６】骨材として使用する場合には、従来の品質
・見栄えを損なわないことが大前提となる。しかし、従
来は一般的に、非磁性溶融物と磁性溶融物を分離しなか
ったり、分離が不十分であったり、水砕水の汚れ（スラ
ッジ等）が原因となり、赤い錆水が製品からしみ出た
り、不純物が目立つ等の問題があり、骨材としての有効
利用を妨げる要因の一つとなっていた。When used as an aggregate, it is a major premise that the conventional quality and appearance are not impaired. However, conventionally, non-magnetic and magnetic melts have generally not been separated, or the separation is insufficient, or due to dirt in water granulation (sludge, etc.), red rust water stains the product. There are problems such as emission and conspicuous impurities, which are one of the factors that hinder the effective use as an aggregate.
【０００７】[0007]
【課題を解決するための手段】本発明の要旨は以下の通
りである。 （１）廃棄物溶融炉から発生した溶融スラグを、水砕処
理により非磁性溶融物と磁性溶融物とに分離し、系外に
掻き出す装置と、混合状態で掻き出される両溶融物を、
非磁性溶融物と磁性溶融物とに仕分けする磁選装置とか
らなる廃棄物溶融スラグの処理装置において、該掻き出
し装置の上部に、非磁性溶融物と磁性溶融物の混合物洗
浄用の水噴霧装置を設置したことを特徴とする廃棄物溶
融スラグの処理装置。The gist of the present invention is as follows. (1) A molten slag generated from a waste melting furnace is separated into a non-magnetic melt and a magnetic melt by a water granulation process, and a device for scraping out of the system, and both melts scraped out in a mixed state,
In a treatment device for waste molten slag, which comprises a magnetic separation device for sorting into a non-magnetic melt and a magnetic melt, a water spray device for washing a mixture of the non-magnetic melt and the magnetic melt is provided above the scraping device. A waste melting slag treatment device characterized by being installed.
【０００８】（２）廃棄物溶融炉から発生した可燃ガス
を燃焼し、該排ガスを冷却塔にて冷却する如くなした冷
却システムにあって、前記非磁性溶融物洗浄用の水噴霧
装置で使用した用水を、冷却塔の冷却用水の一部として
利用する如くなした（１）記載の廃棄物溶融スラグの処
理装置。(2) In a cooling system in which a combustible gas generated from a waste melting furnace is burned and the exhaust gas is cooled in a cooling tower, which is used in the water spray device for cleaning the non-magnetic melt. The waste molten slag treatment apparatus according to (1), wherein the water used is used as a part of the cooling water for the cooling tower.
【０００９】[0009]
【発明の実施の形態】混合物として存在する非磁性溶融
物と磁性溶融物を清浄にするには、水砕ピット水を清浄
に保つのも一つの方法である。水砕ピットへの補給水を
増加させることにより稀薄化させる場合、大量の水が必
要であるため、大容量の排水処理装置を必要とする。し
かし、混合物として存在する両溶融物が、掻き出しコン
ベアによりピット水面上に上がった後、清浄な洗浄水を
直接噴霧すれば、少量の水で洗浄効果が格段に良くなる
ことが判明した。BEST MODE FOR CARRYING OUT THE INVENTION To clean a non-magnetic melt and a magnetic melt existing as a mixture, one method is to keep the water in the water granulation pit clean. When diluting the water granulation pit by increasing the make-up water, a large amount of water is required, so a large-capacity wastewater treatment device is required. However, it has been found that if both the melts present as a mixture go up to the water surface of the pit by the scraping conveyor and then the clean wash water is directly sprayed, the washing effect is remarkably improved with a small amount of water.
【００１０】両溶融物は、水砕ピットをくぐって清浄な
水を噴霧され、効率的に洗浄される。また噴霧水量は、
燃焼炉排ガスの冷却用水より少ないため、従来はガス冷
却用に使用していた清浄な水の一部を、噴霧水として使
用することが可能であり、水砕ピットのオーバーフロー
水をガス冷却用水の一部として使用することで、従来と
比べ水使用量を増やさずに洗浄を行うことが可能とな
る。Both melts pass through a granulation pit and are sprayed with clean water for efficient cleaning. The amount of spray water is
Since it is less than the cooling water for combustion furnace exhaust gas, it is possible to use part of the clean water that was previously used for gas cooling as spray water. By using it as a part, it becomes possible to perform cleaning without increasing the amount of water used as compared with the conventional method.
【００１１】更に、水砕ピットのオーバーフロー水に含
まれるごく微量のスラッジ等の異物は、オーバーフロー
水に混在した状態でガス冷却塔に噴霧され、その後流に
位置する集塵装置でダストと共に捕集されるため、オー
バーフロー水中のスラッジ等の処理装置を必要とせずに
洗浄が可能となる。Further, a very small amount of foreign matter such as sludge contained in the overflow water of the water granulation pit is sprayed on the gas cooling tower in a state of being mixed with the overflow water, and is collected together with the dust by a dust collector located in the downstream thereof. Therefore, it is possible to perform cleaning without requiring a treatment device for sludge in overflow water.
【００１２】[0012]
【実施例】以下に、加熱溶融熱源としてコークスを用い
た都市ごみ溶融炉における本発明の実施例を、図に基づ
いて示す。溶融炉１から発生した磁性溶融物ａ及び非磁
性溶融物ｂは、水砕ピット２内では混合物として存在す
る。該混合物は掻き出しコンベア３により水面上に掻き
上げられ、水面上に搬出された後、スラグ洗浄用水噴霧
装置４から噴霧された水により洗浄される。EXAMPLE An example of the present invention in a municipal solid waste melting furnace using coke as a heating and melting heat source will be described below with reference to the drawings. The magnetic melt a and the nonmagnetic melt b generated from the melting furnace 1 exist as a mixture in the water granulation pit 2. The mixture is scraped up onto the water surface by the scraping conveyor 3, carried out onto the water surface, and then washed with the water sprayed from the slag cleaning water spray device 4.
【００１３】その後更に掻き出しコンベア３により上部
に搬送され、シュート５内を落下し、磁選機１６を介し
て磁性溶融物ａと非磁性溶融物ｂに仕分けされ、それぞ
れ非磁性溶融物ホッパ６と磁性溶融物ホッパ７に貯留さ
れる。After that, it is further conveyed to the upper part by the scraping conveyor 3, drops in the chute 5, and is sorted into a magnetic melt a and a nonmagnetic melt b via a magnetic separator 16, respectively, a nonmagnetic melt hopper 6 and a magnetic melt. It is stored in the melt hopper 7.
【００１４】ところで、混合物として存在する非磁性溶
融物と磁性溶融物は、掻き出しコンベア３で掻き上げら
れる途中に水切りが行われるため、上部に設置する程水
噴霧終了点とシュート５の間隔が小さくなり、水切りが
不十分になる。従って、スラグ洗浄用水噴霧装置４の位
置は水面から１００〜２００mm程度、掻き出しコンベア
３に沿って上昇した所が適切である。By the way, since the non-magnetic melt and the magnetic melt existing as a mixture are drained in the middle of being scraped up by the scraping conveyor 3, the interval between the water spray end point and the chute 5 becomes smaller as it is installed on the upper part. And the drainage becomes insufficient. Therefore, it is appropriate that the position of the water spray device 4 for slag cleaning is about 100 to 200 mm above the water surface and that the water spray device 4 rises along the scraping conveyor 3.
【００１５】次に供給水のフローを説明する。溶融炉１
で発生した可燃性ガスは燃焼炉８で完全燃焼され、該燃
焼後ガスはガス冷却塔９で冷却され、集塵装置１０を介
し煙突１１から排出される。集塵灰は集塵装置１０の下
部から排出され、集塵灰ホッパ１２へ貯留される（その
際、可燃性ガス量の多い場合は適宜ボイラーを設置し、
排熱を回収した後冷却塔で冷却するようになす）。Next, the flow of supply water will be described. Melting furnace 1
The combustible gas generated in 1 is completely combusted in the combustion furnace 8, and the combusted gas is cooled in the gas cooling tower 9 and discharged from the chimney 11 via the dust collector 10. The dust collecting ash is discharged from the lower portion of the dust collecting device 10 and stored in the dust collecting ash hopper 12 (at that time, if the amount of combustible gas is large, a boiler is appropriately installed,
After cooling the exhaust heat, it is cooled in a cooling tower).
【００１６】しかして本発明にあっては、水タンク１３
からガス冷却用水ポンプ１４を介して、ガス冷却塔９に
散水されていた清浄な水の一部をスラグ洗浄用水噴霧装
置４に供給する。一方、水砕ピット２からのオーバーフ
ロー水をオーバーフロー水用ポンプ１５を介してガス冷
却塔９に供給する。In the present invention, however, the water tank 13
A part of the clean water sprinkled in the gas cooling tower 9 is supplied to the slag cleaning water spraying device 4 via the gas cooling water pump 14 from the above. On the other hand, overflow water from the water granulation pit 2 is supplied to the gas cooling tower 9 via the overflow water pump 15.
【００１７】オーバーフロー水中のスラッジ等は、溶融
炉で発生した可燃性ガスを燃焼炉８で完全燃焼した後の
ガス中に存在しているダストと共に集塵装置１０で捕集
され、集塵装置１０の下部の排出口から排出され、集塵
灰ホッパ１２に貯留される。またガスは煙突１１を通っ
て大気へ放散される。Sludge and the like in the overflow water is collected by the dust collector 10 together with the dust present in the gas after the combustible gas generated in the melting furnace is completely combusted in the combustion furnace 8, and the dust collector 10 Is discharged from the discharge port at the lower part of and is stored in the dust collecting ash hopper 12. The gas is also released to the atmosphere through the chimney 11.
【００１８】以上はコークスベッド溶融炉の例について
示したが、電気・灯油等、他の熱源を用いて、下水汚
泥、各種産業廃棄物、又はそれらを脱水、乾燥、焼却、
破砕処理等によって得られた中間処理物溶融炉でも可能
である。Although the example of the coke bed melting furnace has been described above, sewage sludge, various industrial wastes, or dehydration, drying, incineration of the sewage sludge, using other heat sources such as electricity and kerosene,
It is also possible to use an intermediate processed product melting furnace obtained by a crushing process or the like.
【００１９】[0019]
【発明の効果】本発明によって、以下の効果を実現する
ことができる。 １）混合物として存在する非磁性溶融物と磁性溶融物が
水砕ピットをくぐった後、更に磁選前に清浄な水を噴霧
することにより、非磁性溶融物と磁性溶融物を同時に洗
浄でき、付着しているスラッジ等が減少し、製品の品質
を損なわない清浄な非磁性溶融物と磁性溶融物が得ら
れ、骨材としての利用が大幅に促進される。According to the present invention, the following effects can be realized. 1) After the non-magnetic melt and magnetic melt existing as a mixture pass through the water granulation pit, by spraying clean water before the magnetic separation, the non-magnetic melt and the magnetic melt can be washed at the same time and adhered. The amount of sludge that is generated is reduced, a clean non-magnetic melt and a magnetic melt that do not impair the quality of the product are obtained, and their use as aggregates is greatly promoted.
【００２０】２）掻き出し装置において、溶融物に直接
水を噴霧することにより、水砕ピット水自体を清浄に保
つよりも少ない水量で高い洗浄効果が得られる。 ３）洗浄のために使用する水噴霧用水にガス冷却用水の
一部を使用し、それにより生じた水砕ピットのオーバー
フロー水をガス冷却塔に散水することにより、従来と比
較して、水使用量を増加させることなく洗浄を行うこと
が可能である。2) In the scraping device, by spraying water directly on the melt, a high cleaning effect can be obtained with a smaller amount of water than keeping the water in the water granulation pit itself clean. 3) A part of the gas cooling water is used as the water for water spray used for cleaning, and the overflow water generated in the water granulation pit is sprinkled on the gas cooling tower to use water more than before. It is possible to perform the washing without increasing the amount.
【００２１】４）汚れたオーバーフロー水をガス冷却塔
に散水し、オーバーフロー水に含有されるスラッジ等
を、ガス冷却塔の後流に設置した従来の集塵装置で捕集
できるため、特段スラッジ処理設備を設置することなく
洗浄を行うことが可能となり、清浄な非磁性溶融物及び
磁性溶融物を得ることが可能となる。4) Dirty overflow water is sprinkled on the gas cooling tower, and sludge contained in the overflow water can be collected by a conventional dust collector installed downstream of the gas cooling tower. It becomes possible to perform cleaning without installing equipment, and it is possible to obtain a clean non-magnetic melt and a magnetic melt.
【図１】本発明のフローの説明図。FIG. 1 is an explanatory diagram of a flow of the present invention.
ａ：磁性溶融物 ｂ：非磁性溶融物 １：溶融炉 ２：水砕ピット ３：掻き出しコンベア ４：スラグ洗浄用水噴霧装置 ５：シュート ６：非磁性溶融物ホッパ ７：磁性溶融物ホッパ ８：燃焼炉 ９：ガス冷却塔 １０：集塵装置 １１：煙突 １２：集塵灰ホッパ １３：水タンク １４：ガス冷却用水ポンプ １５：オーバーフロー水用ポンプ １６：磁選機 １６′：掻き取り板 a: magnetic melt b: non-magnetic melt 1: melting furnace 2: granulating pit 3: scraping conveyor 4: water spray device for slag cleaning 5: chute 6: non-magnetic melt hopper 7: magnetic melt hopper 8: combustion Furnace 9: Gas cooling tower 10: Dust collector 11: Chimney 12: Dust ash hopper 13: Water tank 14: Water pump for gas cooling 15: Pump for overflow water 16: Magnetic separator 16 ': Scraping plate
Claims (2)
を、水砕処理により非磁性溶融物と磁性溶融物とに分離
し、系外に掻き出す装置（３）と、混合状態で掻き出さ
れる両溶融物を、非磁性溶融物と磁性溶融物とに仕分け
する磁選装置（１６）とからなる廃棄物溶融スラグの処
理装置において、該掻き出し装置の上部に、非磁性溶融
物と磁性溶融物の混合物洗浄用の水噴霧装置（４）を設
置したことを特徴とする廃棄物溶融スラグの処理装置。1. A device (3) for separating molten slag generated from a waste melting furnace into a non-magnetic melt and a magnetic melt by a water granulation process, and scraping them out of the system, and a scraping device in a mixed state. In a device for treating waste molten slag, which comprises a magnetic separator (16) for sorting a melt into a non-magnetic melt and a magnetic melt, a mixture of the non-magnetic melt and the magnetic melt is provided above the scraping device. A treatment device for waste molten slag, comprising a water spray device (4) for cleaning.
スを燃焼し、該排ガスを冷却塔（９）にて冷却する如く
なした冷却システムにあって、前記洗浄用の水噴霧装置
で使用した用水を、冷却塔の冷却用水の一部として利用
する如くなした請求項１記載の廃棄物溶融スラグの処理
装置。2. A cooling system configured to burn a combustible gas generated from a waste melting furnace (1) and cool the exhaust gas in a cooling tower (9). The apparatus for treating waste molten slag according to claim 1, wherein the used water is used as a part of the cooling water for the cooling tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7214633A JPH0959046A (en) | 1995-08-23 | 1995-08-23 | Waste molten slag processing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7214633A JPH0959046A (en) | 1995-08-23 | 1995-08-23 | Waste molten slag processing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0959046A true JPH0959046A (en) | 1997-03-04 |
Family
ID=16658978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7214633A Withdrawn JPH0959046A (en) | 1995-08-23 | 1995-08-23 | Waste molten slag processing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0959046A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100322657B1 (en) * | 1999-10-27 | 2002-02-07 | 정수성 | aggregate means producing system for anti-slide construction of road using slags |
| KR100369432B1 (en) * | 2002-08-02 | 2003-01-24 | 주식회사 한국종합기술개발공사 | manufacture method of aggregate using steel slag and device thereof |
| WO2003085322A1 (en) * | 2002-04-10 | 2003-10-16 | Ebara Corporation | Ash fusing system, method of operating the system, and gasification fusing system for waste |
| JP2007120842A (en) * | 2005-10-27 | 2007-05-17 | Mitsubishi Heavy Ind Ltd | Method and its device for treating ash melting furnace granulation water |
| WO2020038305A1 (en) * | 2018-08-19 | 2020-02-27 | 浙江晟达机械有限公司 | Multi-tower integrated crushing system which is vertically arranged and environmentally friendly, and crushing process thereof |
-
1995
- 1995-08-23 JP JP7214633A patent/JPH0959046A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100322657B1 (en) * | 1999-10-27 | 2002-02-07 | 정수성 | aggregate means producing system for anti-slide construction of road using slags |
| WO2003085322A1 (en) * | 2002-04-10 | 2003-10-16 | Ebara Corporation | Ash fusing system, method of operating the system, and gasification fusing system for waste |
| US7040240B2 (en) | 2002-04-10 | 2006-05-09 | Ebara Corporation | Ash fusing system, method of operating the system, and gasification fusing system for waste |
| KR100369432B1 (en) * | 2002-08-02 | 2003-01-24 | 주식회사 한국종합기술개발공사 | manufacture method of aggregate using steel slag and device thereof |
| JP2007120842A (en) * | 2005-10-27 | 2007-05-17 | Mitsubishi Heavy Ind Ltd | Method and its device for treating ash melting furnace granulation water |
| WO2020038305A1 (en) * | 2018-08-19 | 2020-02-27 | 浙江晟达机械有限公司 | Multi-tower integrated crushing system which is vertically arranged and environmentally friendly, and crushing process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20021105 |