JPH09235608A - Method for discharging residual slag - Google Patents

Method for discharging residual slag

Info

Publication number
JPH09235608A
JPH09235608A JP3994296A JP3994296A JPH09235608A JP H09235608 A JPH09235608 A JP H09235608A JP 3994296 A JP3994296 A JP 3994296A JP 3994296 A JP3994296 A JP 3994296A JP H09235608 A JPH09235608 A JP H09235608A
Authority
JP
Japan
Prior art keywords
slag
residual
residual slag
hot metal
discharged
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
Application number
JP3994296A
Other languages
Japanese (ja)
Inventor
Takashi Fujita
藤田　　貴
Hiroshi Matsumoto
洋 松本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP3994296A priority Critical patent/JPH09235608A/en
Publication of JPH09235608A publication Critical patent/JPH09235608A/en
Pending legal-status Critical Current

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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
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

PROBLEM TO BE SOLVED: To efficiently discharge residual slag without allowing the solidification and adhesion thereof by discharging the slag remaining in a molten iron receiving vessel at a specific temp. after delivering molten iron from this vessel. SOLUTION: The residual slag in the molten iron receiving vessel is discharged at >=1000 deg.C slag temp. after delivery of the molten iron. If the assurance of >=1000 deg.C slag temp. is difficult, the residual slag is discharged at >=900 deg.C by heat insulating or heating the slag. The heat insulation of the residual slag is executed by adding heat insulating materials, such as materials of paper making sludge or rice hulls, to the slag or coating the surface with these materials to suppress heat radiation. The heating is preferably executed by adding exothermic agents, such as carbon and metals, to the residual slag to effect heat generation by chemical reaction.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、溶銑を精錬する過
程において生成したスラグ（鉱滓）を、受銑容器から排
出する残留スラグの排出方法技術に属するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for discharging residual slag, which discharges slag (slag) produced in the process of refining hot metal from a pig iron container.

【０００２】[0002]

【従来の技術】図４の溶銑処理工程図に示すように、受
銑容器内には溶銑のみならず、高炉から溶銑と同時に流
入したスラグ、高炉転炉間において脱珪、脱燐、脱硫処
理を行う際に生成したスラグ等が存在し、転炉工場にお
いて溶銑を払いだした後には、受銑容器（溶銑運搬容
器、脱珪、脱燐、脱硫等の溶銑処理容器など）内には、
上記のスラグが残留することになる。これらの残留スラ
グは、温度の低下とともに受銑容器内で凝固し、受銑容
器内壁に付着して、その後の操業を阻害する要因となっ
ている。すなわち、付着スラグが成長すると、次回以降
の溶銑払出し時に、溶銑の排出性が低下し、全量払いだ
すことができなくなり、鉄歩留りの悪化を招くことが知
られている。また、受銑容器内の内容積が減少すること
により、可能受銑量も減少するため生産性の低下も引き
起こす。このため、溶銑払出し後、受銑容器内の残留ス
ラグを速やかに排出する必要がある。2. Description of the Related Art As shown in the hot metal treatment process diagram of FIG. 4, not only hot metal in the hot metal container but also slag that has flowed in simultaneously from the hot metal from the blast furnace, desiliconization, dephosphorization, and desulfurization treatment between the blast furnace converters. There is slag, etc. generated when performing, and after the hot metal has been discharged at the converter plant, in the hot metal container (hot metal carrying container, hot metal treatment container for desiliconization, dephosphorization, desulfurization, etc.),
The above slag will remain. These residual slag solidifies in the piggy-back container as the temperature decreases and adheres to the inner wall of the piggy-back container, which is a factor that hinders subsequent operations. That is, it is known that when the adhered slag grows, the ability to discharge the hot metal deteriorates at the time of the next hot metal discharge, making it impossible to completely discharge the hot metal, resulting in a deterioration of the iron yield. In addition, the decrease in the internal volume of the pig iron container also reduces the amount of pig iron that can be received, resulting in a decrease in productivity. Therefore, it is necessary to quickly discharge the residual slag in the hot metal container after the hot metal is discharged.

【０００３】この対策として、従来、転炉工場において
溶銑を払いだした後に、図４に示すように、受銑容器を
残留スラグ収容施設である排滓設備まで移動し、下向き
に傾転あるいは転倒させて受銑容器内の残留スラグを排
出するのが一般的である。As a countermeasure against this, conventionally, after the hot metal has been discharged in a converter plant, as shown in FIG. 4, the hot metal container is moved to a slag facility which is a residual slag accommodating facility and tilts or falls downward. Generally, the residual slag in the pig iron container is discharged.

【０００４】さらに、排滓設備における残留スラグの排
出性が悪く受銑容器内壁に付着スラグが成長した場合の
対策としては、受銑容器を一旦冷却したのち、冷間ブレ
ーカ等により物理的に付着スラグを除去することが一般
的である。また、特開昭54-122609 号公報には、高炉に
おける受銑時に付着スラグの中心付近まで溶銑を充填
し、次いで溶銑中に気体を吹き込むことにより混銑車受
銑口内側縁の付着スラグを溶解して除去する方法が開示
されている。[0004] Further, as a countermeasure when the discharge performance of residual slag in the waste slag equipment is poor and adhered slag grows on the inner wall of the pig iron container, the pig iron container is cooled once and then physically attached by a cold breaker or the like. It is common to remove slag. Further, in JP-A-54-122609, molten iron is filled up to near the center of the adhered slag at the time of receiving pig iron in the blast furnace, and then gas is blown into the molten pig iron to melt the adhered slag on the inner edge of the pig iron reception port of the mixed pig car. Then, a method for removing it is disclosed.

【０００５】[0005]

【発明が解決しようとする課題】転炉工場における溶銑
払出し後、受銑容器を排滓設備に移動させて残留スラグ
を排出する従来の方法は、転炉工場から排滓設備までの
移動中に受銑容器内の残留スラグ温度が低下し、残留ス
ラグの一部または多くが凝固・付着するために、排滓設
備において排滓性が十分に確保できないという欠点を有
していた。さらに、二次的対策として、受銑容器内で付
着スラグが成長した場合の、冷却したあとで物理的に付
着スラグを除去する方法は、ブレーカ等により付着スラ
グを除去する際に、受銑容器内壁の耐火物を損傷するこ
とは避けられず、したがって、付着スラグ除去後の耐火
物の吹き付け補修が必須とされる。また、冷却すること
による熱損失は非常に大きく、受銑容器の非稼働時間の
増大とともに生産性を悪化させることは避けられない。The conventional method of moving the receiving iron container to the slag facility and discharging the residual slag after the molten pig iron is discharged from the converter plant during the transfer from the converter plant to the slag facility is described below. The residual slag temperature in the pig iron container is lowered, and a part or a large amount of the residual slag is solidified and adhered, so that there is a drawback in that the slag property cannot be sufficiently secured in the slag facility. In addition, as a secondary measure, when the adhered slag grows in the pig iron container, the method of physically removing the adhered slag after cooling is to remove the adhered slag with a breaker, etc. Damage to the refractory on the inner wall is unavoidable, and therefore spraying and repairing the refractory after removing the adhered slag is essential. Further, the heat loss due to cooling is very large, and it is inevitable that the productivity is deteriorated as the non-operating time of the pig iron container increases.

【０００６】また、特開昭54-122609 号公報に開示して
ある付着スラグを溶解して除去する方法は、付着スラグ
が十分に除去されるとはいえず、また、溶銑湯面から受
銑容器上端までのフリーボードと呼ばれる距離が減少す
ることにより、溶解したスラグが受銑容器上端の開口部
から噴出する危険性をも含んでいる。このため、安全上
からも好ましい方法とはいえず、実用化のためには、各
種の設備改造が必要とされる。Further, the method of dissolving and removing the adhered slag disclosed in JP-A-54-122609 cannot be said to be sufficient to remove the adhered slag, and the method of receiving hot metal from the hot metal surface Since the distance called the freeboard to the upper end of the container decreases, there is a risk that molten slag will spout from the opening at the upper end of the pig iron container. Therefore, it is not a preferable method from the viewpoint of safety, and various equipment modifications are required for practical use.

【０００７】本発明は、上記の問題点を解決するために
成されたもので、溶銑払出し後の残留スラグを凝固・付
着させることなく受銑容器内から排出する残留スラグの
排出方法を提供することを目的とする。The present invention has been made to solve the above problems, and provides a method for discharging residual slag from a hot metal container without solidifying and adhering the residual slag after the hot metal is discharged. The purpose is to

【０００８】[0008]

【課題を解決するための手段】その要旨は、溶銑払出し
後、受銑容器内の残留スラグをスラグ温度1000℃以上で
排出することを特徴とする。さらに、溶銑払出し後、受
銑容器内の残留スラグを保温または加熱してスラグ温度
900℃以上で排出することを特徴とする。[Summary of the Invention] The gist of the invention is that, after the hot metal is discharged, the residual slag in the hot metal container is discharged at a slag temperature of 1000 ° C or higher. Furthermore, after the hot metal is discharged, the slag temperature is maintained by heating or heating the residual slag in the hot metal container.
It is characterized by discharging at 900 ° C or higher.

【０００９】溶銑払出し後の残留スラグの排滓性は、溶
銑払出しから排滓までの経過時間に依存し、経過時間の
増大につれて排滓率（排出スラグ量／排滓前残留スラグ
量）が減少することは従来から経験的に知られていた。
しかし、本発明者らは、詳細に研究した結果、従来の知
見を確認しただけでなく、残留スラグの排滓性は溶銑払
出し時の温度にかかわらず、排滓時の残留スラグ温度に
著しく依存しているという知見を得た。また、この結果
は、取鍋あるいは混銑車等の受銑容器の種類を問わず一
致した。The slag drainage of the residual slag after the hot metal discharge depends on the elapsed time from the hot metal discharge to the slag, and the slag ratio (amount of discharged slag / amount of residual slag before slag) decreases as the elapsed time increases. It has been known empirically from the past.
However, as a result of detailed research, the present inventors not only confirmed the conventional findings, but the slag slagging property of the residual slag remarkably depends on the residual slag temperature at the time of slagging, regardless of the temperature at the time of hot metal payout. I got the knowledge that they are doing. In addition, this result was consistent regardless of the type of the ladle container such as a ladle or a mixed pig car.

【００１０】具体的には、図１に示すように、残留スラ
グ温度が1000℃より高い範囲では、排滓率が従来からの
傾向に比して飛躍的に増大するという新たな知見にたど
り着いた。この理由は以下のように考えられる。残留ス
ラグ温度の低下に伴い、残留スラグ全体に占める凝固ス
ラグの割合は増加するが、この割合がある一定値よりも
増加すると、受銑容器内壁耐火物との間で付着結合しや
すい条件が整い、その結果、残留スラグの付着が促進さ
れる。すなわち、残留スラグは排滓されにくくなり、排
滓率が低下する。Specifically, as shown in FIG. 1, in the range where the residual slag temperature is higher than 1000 ° C., the inventors have reached a new finding that the slag ratio is dramatically increased as compared with the conventional tendency. . The reason for this is considered as follows. As the residual slag temperature decreases, the proportion of solidified slag in the total residual slag increases, but if this proportion increases above a certain value, the conditions for easy adhesive bonding with the inner wall refractory of the pig iron container are established. As a result, the adhesion of residual slag is promoted. That is, the residual slag becomes difficult to be discharged, and the ratio of discharged waste decreases.

【００１１】付着結合しやすくなる条件は、残留スラグ
の融点と密接な関係があり、したがって、スラグ組成に
も依存する。そこで、受銑容器内に残留する可能性のあ
るスラグ組成について検討したところ、残留スラグ温度
を1000℃以上として排滓することにより、すべてのスラ
グ組成において付着結合しやすい条件を回避できること
を確認し、本発明の請求項１に至った。The condition for facilitating the adhesive bond is closely related to the melting point of the residual slag, and therefore depends on the slag composition. Therefore, we examined the slag composition that may remain in the pig iron container, and confirmed that by removing the slag with a residual slag temperature of 1000 ° C or higher, it is possible to avoid conditions in which all of the slag composition tends to adhere and bond. The present invention has reached claim 1 of the present invention.

【００１２】一方、操業条件に制約があり残留スラグ温
度1000℃以上を確保することが困難な場合も想定され
る。本発明者らは、この場合の対応策も検討するため
に、さらに実験を重ねた結果、以下に示す知見を得た。
まず、保温剤の添加あるいは表面への被覆により残留ス
ラグの熱放散を抑制し、温度降下を防止すること、ある
いは、発熱剤の添加によって、残留スラグ温度を確保す
ることによっても、排滓率向上に効果があることを確か
めた。この場合の保温剤とは、製紙スラジ系の物質、も
みがら等、一般に保温材として用いられている物質であ
ればよく、スラグ表面の被覆により残留スラグの熱放散
を抑制できればよい。On the other hand, there may be a case where it is difficult to secure a residual slag temperature of 1000 ° C. or higher due to restrictions on operating conditions. As a result of further experiments, the present inventors have obtained the following findings as a result of further studying measures against this case.
First, by adding a heat retaining agent or coating on the surface to suppress the heat dissipation of the residual slag and preventing a temperature drop, or by adding a heat generating agent to secure the residual slag temperature, the slag removal rate can be improved. I confirmed that it was effective. In this case, the heat retaining agent may be a substance generally used as a heat retaining material such as a paper-making sludge-based substance or chaff, and it is sufficient that the heat dissipation of the residual slag can be suppressed by coating the surface of the slag.

【００１３】また、発熱剤とは、炭素の酸化反応熱を利
用する炭素系発熱剤、あるいはアルミニウム、シリコン
等の酸化反応熱を利用する金属系発熱剤等、一般に発熱
剤として使用される物質でよく、化学反応による発熱で
スラグに熱量を与えるものであれば、特に、その他の制
約はない。さらに、保温剤と発熱剤を混合したもので
も、同様の効果があることは明らかである。The exothermic agent is a substance generally used as an exothermic agent such as a carbon exothermic agent utilizing the heat of oxidation reaction of carbon or a metallic exothermic agent utilizing the heat of oxidation reaction of aluminum, silicon or the like. Of course, there is no other limitation as long as it gives heat to the slag by the heat generated by the chemical reaction. Furthermore, it is clear that the same effect can be obtained by mixing the heat retaining agent and the exothermic agent.

【００１４】また、この知見を受けて、受銑容器開口部
への保温蓋装置による保温実験をも行った結果、同様の
効果を確認するに至った。したがって、残留スラグ温度
1000℃を確保することが困難な場合にも、保温あるいは
加熱手段を用いて残留スラグ温度を 900℃以上に確保す
ることにより、残留スラグが付着結合しやすい条件を回
避でき、排滓率が向上することを確認し、本発明の請求
項２に至った。Further, based on this finding, as a result of conducting a heat retention experiment on the opening of the piggyback container using a heat retention lid, the same effect was confirmed. Therefore, the residual slag temperature
Even if it is difficult to maintain 1000 ° C, by keeping the residual slag temperature at 900 ° C or higher by using heat insulation or heating means, it is possible to avoid the condition that residual slag tends to adhere and bond, and improve the waste rate. It was confirmed that the above was achieved, and the present invention reached claim 2.

【００１５】[0015]

【発明の実施の形態】実施例を挙げて本発明の実施の形
態について説明する。高炉において受銑した受銑容器内
の溶銑を直接転炉工場において払いだす場合、および高
炉転炉間において脱珪、脱燐、脱硫処理を行った後、転
炉工場において払いだす場合について、溶銑払出し後、
受銑容器を排滓設備まで移動して受銑容器内の残留スラ
グ温度を変えて排滓を行った。その時の排滓時残留スラ
グ温度と排滓率（排出スラグ量／排滓前残留スラグ量）
との関係を図１に示す。なお、この時のスラグ組成を表
１に示す。図１に示すように、本発明の排滓時の残留ス
ラグ温度が1000℃以上の場合には、70％以上の排滓率で
排滓を行うことができた。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to examples. When the hot metal in the hot metal container received in the blast furnace is discharged directly to the converter plant, and when it is discharged to the converter plant after desiliconization, dephosphorization, and desulfurization treatment between the blast furnace converters, After paying out
The iron receiving container was moved to the slag facility, and the slag was discharged by changing the residual slag temperature in the iron receiving container. Residual slag temperature at the time of slag and slag ratio (amount of slag discharged / amount of residual slag before slag)
1 is shown in FIG. The slag composition at this time is shown in Table 1. As shown in FIG. 1, when the residual slag temperature during slag removal according to the present invention was 1000 ° C. or higher, the slag could be discharged at a slag removal rate of 70% or more.

【００１６】溶銑払出し後の残留スラグに保温剤として
製紙スラジ系物質を、発熱剤としてアルミニウム系発熱
剤を添加して保温あるいは加熱した後、受銑容器を排滓
設備まで移動して排滓を行った。その時の排滓時残留ス
ラグ温度と排滓率との関係を図２に示す。なお、この時
のスラグ組成を表１に示す。図２に示すように、本発明
の保温あるいは加熱することにより残留スラグの熱放散
を抑制した場合も残留スラグ温度が1000℃以上の場合に
は、70％以上の排滓率で、残留スラグ温度が 900℃以上
の場合には、50％以上の排滓率で排滓を行うことができ
た。保温剤および発熱剤を使用する場合はコストアップ
となるため、残留スラグ温度は 900℃以上に設定するこ
とが好ましい。After adding paper-making sludge-type substance as a heat-retaining agent and aluminum-type heat-generating agent as a heat-generating agent to the residual slag after paying out hot metal to heat-retain or heat it, the pig iron container is moved to a slag facility to remove slag. went. Fig. 2 shows the relationship between the residual slag temperature during slag and the slag ratio at that time. The slag composition at this time is shown in Table 1. As shown in FIG. 2, even if the heat dissipation of the residual slag is suppressed by heat retention or heating according to the present invention, when the residual slag temperature is 1000 ° C. or higher, the residual slag temperature is 70% or higher and the residual slag temperature is 70% or higher. When the temperature was above 900 ℃, the slag could be discharged at a slag ratio of 50% or more. Since the cost increases when using a heat retaining agent and an exothermic agent, the residual slag temperature is preferably set to 900 ° C or higher.

【００１７】溶銑払出し後、受銑容器の開口部に保温蓋
を装着して残留スラグの熱放散を抑制した後、受銑容器
を排滓設備まで移動して排滓を行った。その時の排滓時
残留スラグ温度と排滓率との関係を図３に示す。なお、
この時のスラグ組成を表１に示す。図３に示すように、
保温蓋を装着して残留スラグの熱放散を抑制した場合も
残留スラグ温度が1000℃以上の場合には、70％以上の排
滓率で、残留スラグ温度が 900℃以上の場合には、50％
以上の排滓率で排滓を行うことができた。After the hot metal was discharged, a heat insulating lid was attached to the opening of the hot metal container to suppress the heat dissipation of the residual slag, and then the hot metal container was moved to a slag facility to discharge the slag. Fig. 3 shows the relationship between the residual slag temperature during slag and the slag ratio at that time. In addition,
Table 1 shows the slag composition at this time. As shown in FIG.
Even if a heat insulation lid is attached to suppress the heat dissipation of the residual slag, if the residual slag temperature is 1000 ° C or higher, the slag ratio is 70% or higher, and if the residual slag temperature is 900 ° C or higher, it is 50% or higher. %
The waste was able to be discharged at the above waste rate.

【００１８】図１、２、３に示すように、残留スラグ温
度が 900℃未満になると排滓率は50％未満となり、受銑
容器内で残留スラグの凝固・付着が起こり、生産性が低
下する。As shown in FIGS. 1, 2, and 3, when the residual slag temperature is less than 900 ° C., the slag ratio is less than 50%, solidification and adhesion of the residual slag occur in the pig iron container, and the productivity is reduced. To do.

【００１９】[0019]

【表１】 [Table 1]

【００２０】[0020]

【発明の効果】以上述べたところから明らかなように、
本発明の残留スラグの排出方法は、排滓後に受銑容器内
に残留するスラグが減少するため、受銑容器内で凝固・
付着するスラグ量も減少する。したがって、本発明は受
銑容器を冷却して行う付着スラグの除去作業が省略で
き、熱損失の低減、耐火物の吹き付け補修作業の省略、
受銑容器稼働時間の増大といった効果をもたらす。さら
に、受銑容器内の残留スラグが減少することにより脱
珪、脱燐、脱硫処理における各吹き込み剤の原単位が減
少する効果も得られる。As is apparent from the above description,
The method for discharging residual slag of the present invention reduces the amount of slag remaining in the pig iron container after the slag is discharged.
The amount of slag that adheres also decreases. Therefore, the present invention can omit the work of removing the adhered slag performed by cooling the pig iron container, reducing the heat loss, omitting the repair work of spraying the refractory,
This brings about an effect such as an increase in operating time of the receiving container. Furthermore, since the residual slag in the pig iron container is reduced, the effect of reducing the basic unit of each blowing agent in desiliconization, dephosphorization, and desulfurization treatment can be obtained.

【図面の簡単な説明】[Brief description of drawings]

【図１】排滓時の残留スラグ温度と排滓率との関係を示
す図である。FIG. 1 is a diagram showing a relationship between a residual slag temperature at the time of slag and a slag ratio.

【図２】保温剤または発熱剤を使用して残留スラグの熱
放散を抑制した場合の排滓時の残留スラグ温度と排滓率
との関係を示す図である。FIG. 2 is a diagram showing a relationship between a residual slag temperature and a slag ratio at the time of discharging slag when heat dissipation of a residual slag is suppressed by using a heat retaining agent or an exothermic agent.

【図３】受銑容器の開口部に保温蓋を装着して残留スラ
グの熱放散を抑制した場合の排滓時の残留スラグ温度と
排滓率との関係を示す図である。FIG. 3 is a diagram showing a relationship between a residual slag temperature and a slag ratio at the time of slag removal when a heat-retaining lid is attached to an opening of a piggyback container to suppress heat dissipation of the residual slag.

【図４】溶銑処理工程を示す図である。FIG. 4 is a diagram showing a hot metal treatment step.

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 溶銑払出し後、受銑容器内の残留スラグ
をスラグ温度1000℃以上で排出することを特徴とする残
留スラグの排出方法。1. A method for discharging residual slag, which comprises discharging residual slag in a hot metal container at a slag temperature of 1000 ° C. or higher after discharging hot metal. 【請求項２】 溶銑払出し後、受銑容器内の残留スラグ
を保温または加熱してスラグ温度 900℃以上で排出する
ことを特徴とする残留スラグの排出方法。2. A method for discharging residual slag, characterized in that after the hot metal is discharged, the residual slag in the hot metal container is kept warm or heated and discharged at a slag temperature of 900 ° C. or higher.
JP3994296A 1996-02-27 1996-02-27 Method for discharging residual slag Pending JPH09235608A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3994296A JPH09235608A (en) 1996-02-27 1996-02-27 Method for discharging residual slag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3994296A JPH09235608A (en) 1996-02-27 1996-02-27 Method for discharging residual slag

Publications (1)

Publication Number Publication Date
JPH09235608A true JPH09235608A (en) 1997-09-09

Family

ID=12567018

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3994296A Pending JPH09235608A (en) 1996-02-27 1996-02-27 Method for discharging residual slag

Country Status (1)

Country Link
JP (1) JPH09235608A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100554732B1 (en) * 2001-05-23 2006-02-24 주식회사 포스코 Silicon-carbon Based Briquette for Rising Temperature of Melt

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100554732B1 (en) * 2001-05-23 2006-02-24 주식회사 포스코 Silicon-carbon Based Briquette for Rising Temperature of Melt

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