JPH07265846A - Treating agent for secondary cooling water of continuous casting equipment - Google Patents
Treating agent for secondary cooling water of continuous casting equipmentInfo
- Publication number
- JPH07265846A JPH07265846A JP6251694A JP6251694A JPH07265846A JP H07265846 A JPH07265846 A JP H07265846A JP 6251694 A JP6251694 A JP 6251694A JP 6251694 A JP6251694 A JP 6251694A JP H07265846 A JPH07265846 A JP H07265846A
- Authority
- JP
- Japan
- Prior art keywords
- cooling water
- secondary cooling
- continuous casting
- casting equipment
- agent
- 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.)
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Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は連続鋳造設備二次冷却水
用処理剤に係り、特に、連続鋳造設備の二次冷却水散水
ノズルやストレーナの閉塞を防止して、長期にわたり均
一かつ安定な散水を行うことを可能とする連続鋳造設備
二次冷却水用処理剤に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a secondary cooling water treatment agent for continuous casting equipment, and more particularly, to prevent clogging of secondary cooling water sprinkling nozzles and strainers of continuous casting equipment to ensure uniform and stable operation for a long period of time. The present invention relates to a treatment agent for secondary cooling water of continuous casting equipment that enables water sprinkling.
【０００２】[0002]
【従来の技術】連続鋳造法（ｃｏｎｔｉｎｕｏｕｓ ｃ
ａｓｔｉｎｇ）とは、圧延用素材のスラブやビレット、
或いは丸棒のような単純断面形状の製品を溶鋼から直接
連続的に製造する方法である。具体的には、底のない水
冷金型に溶鋼を注いで外殻を固まらせ（この水冷金型の
冷却に用いる水を「一次冷却水」という。）、これをロ
ールで下方に引張りながら、直接鋳塊に冷却水をスプレ
ーし、水冷凝固させ（この水冷凝固のためにスプレーす
る水を「二次冷却水」という。）、これを必要長さに切
断して製品とする方法であり、鉄，非鉄金属の両分野で
広く実施されている。2. Description of the Related Art Continuous casting process
asting) is a slab or billet made of rolling material,
Alternatively, it is a method of directly and continuously producing a product having a simple sectional shape such as a round bar from molten steel. Specifically, pouring molten steel into a bottomless water-cooled mold to solidify the outer shell (water used to cool this water-cooled mold is called "primary cooling water"), while pulling this downward with a roll, It is a method of spraying cooling water directly on the ingot, water-cooling and solidifying (the water sprayed for this water-cooling and solidifying is called "secondary cooling water"), and cutting this to the required length to make a product, It is widely used in both ferrous and non-ferrous metals.
【０００３】このような連続鋳造設備の二次冷却水によ
る水冷凝固の工程には、水冷金型から鋳塊を引き出すた
めの多数のロールと、このロール間に配置された、多数
（通常の場合数百個）の、口径の小さい（通常の場合１
ｍｍφ前後）二次冷却水散水ノズルとが設けられている
が、この二次冷却水散水ノズルは閉塞し易く、均一で安
定した散水の確保が困難であるという問題がある。ま
た、この二次冷却水は、多くの場合、連続鋳造設備の他
の部位の冷却水の戻り水と共に、濾過器で濾過された
後、冷却塔で冷却され、循環使用されるが、この循環冷
却水系内に設けられたストレーナの閉塞、及び、このス
トレーナ閉塞による冷却水流量の低下の問題もある。In the process of water-cooled solidification with secondary cooling water in such continuous casting equipment, a large number of rolls for drawing ingots from the water-cooled mold and a large number of rolls (normally the case) arranged between the rolls are used. Hundreds of small diameters (normally 1
Although a secondary cooling water sprinkling nozzle is provided, this secondary cooling water sprinkling nozzle is easily clogged, and there is a problem that it is difficult to secure uniform and stable water sprinkling. Further, in many cases, this secondary cooling water is filtered by a filter together with the return water of the cooling water of other parts of the continuous casting facility, then cooled in a cooling tower and used for circulation. There is also a problem that the strainer provided in the cooling water system is blocked, and the flow rate of the cooling water is reduced due to the blockage of the strainer.
【０００４】この二次冷却水散水ノズルやストレーナの
閉塞の原因としては、下記〜の要因による冷却水系
内の汚染が挙げられる。The causes of the blockage of the secondary cooling water sprinkling nozzle and the strainer include contamination in the cooling water system due to the following factors.
【０００５】 溶存塩類の析出による系内汚染 連鋳パウダがプロセスで使用され、パウダ中の成分であ
るフッ素やカルシウムがスプレー水（二次冷却水）に混
入してくること、工業用水中の硬度成分が濃縮するこ
と、及び、設備材質腐食により、二次冷却水中に溶存鉄
が存在することなどにより、酸化鉄、フッ化カルシウ
ム、炭酸カルシウムを成分とするスケールの析出がみら
れる。Contamination in the system due to precipitation of dissolved salts Continuous casting powder is used in the process, and fluorine and calcium, which are components in the powder, are mixed into spray water (secondary cooling water), hardness in industrial water Due to the concentration of the components and the presence of dissolved iron in the secondary cooling water due to the corrosion of the equipment material, scale deposition containing iron oxide, calcium fluoride, and calcium carbonate is observed.
【０００６】 懸濁物質による系内汚染 ミルスケール、連鋳パウダ混入物、機械油が懸濁物質と
して混入する。即ち、前述の如く、二次冷却水は濾過器
で濾過されて再使用されている場合が多いが、濾過処理
後においても、これらの混入物が懸濁物質として多少残
留している場合が多く、これが系内汚染原因となる。Contamination in the system by suspended substances Mill scale, continuous casting powder mixture, and machine oil are mixed in as suspended substances. That is, as described above, the secondary cooling water is often filtered by the filter and reused, but even after the filtration treatment, these contaminants often remain as suspended substances to some extent. , This becomes a cause of contamination in the system.
【０００７】 スライムによる系内汚染 機械油などが混入する系であるために、スライムが発生
し易い。発生したスライムは、粘着性物質を放出するた
めに、系内の懸濁物質の付着を促進する働きもある。Contamination of the system by slime Since the system is mixed with mechanical oil, slime is likely to occur. The slime thus generated also has a function of promoting adhesion of suspended substances in the system in order to release sticky substances.
【０００８】従来、このような系内汚染を防止するため
に、上記〜の系内汚染原因を個々に抑える処理が提
案されている。また、塩素剤の高濃度添加によるスライ
ム剥離処理や酸洗浄による無機付着物の除去などの対策
もある。In order to prevent such in-system contamination, treatments for suppressing the causes of in-system contamination (1) to (4) have been proposed. There are also measures such as slime stripping treatment by adding a high concentration of chlorine agent and removal of inorganic deposits by acid cleaning.
【０００９】[0009]
【発明が解決しようとする課題】しかしながら、従来の
汚染抑制処理は、汚染の程度を軽減する点においては、
一応の効果はみられるものの、完全に汚染を解消するも
のではなく、処理し得ない汚れが残留する。そして、残
留した汚れが経時的に蓄積して、ノズル閉塞等の障害を
引き起こすことを回避することはできない。However, in the conventional pollution control treatment, in terms of reducing the degree of pollution,
Although there is a tentative effect, it does not completely eliminate the contamination, leaving unprocessed stains. In addition, it is unavoidable that residual stains accumulate over time and cause troubles such as nozzle clogging.
【００１０】特に、二次冷却水の散水ノズルにおいて
は、１台の給水ポンプから給水された二次冷却水が、末
端では数百個の、直径１ｍｍ前後の極く小さい口径の散
水ノズルに給水されるため、通常の開放循環冷却水系で
は許容される程度の汚れ（付着速度で１０ｍｇ／ｃｍ2
／一ケ月）でもノズル閉塞に至るほど、設備構造上、閉
塞が生じ易いものであることから、汚れが残留するよう
な処理では、ノズル等の閉塞の問題を解決することはで
きない。Particularly, in the secondary cooling water sprinkling nozzle, the secondary cooling water supplied from one water supply pump is supplied to several hundreds of small-diameter sprinkling nozzles having a diameter of about 1 mm at the end. Therefore, dirt that is acceptable in a normal open circulation cooling water system (adhesion rate: 10 mg / cm 2
Even for one month), the nozzle structure is likely to be clogged due to the facility structure. Therefore, the problem of clogging of the nozzle and the like cannot be solved by a process in which dirt remains.
【００１１】一方、塩素剤や酸による洗浄処理では、短
時間（１日以内）に洗浄効果が現れ、洗浄による大量の
剥離物が直ちに発生することから、この剥離物が短時間
内にストレーナやノズルを閉塞させるという問題があ
る。On the other hand, in the cleaning treatment with a chlorine agent or an acid, the cleaning effect appears in a short time (within one day), and a large amount of peeled substances are immediately generated by the cleaning. There is a problem of blocking the nozzle.
【００１２】本発明は上記従来の二次冷却水系のストレ
ーナや散水ノズルの閉塞の問題点を解決するために、連
続鋳造設備の二次冷却水系内の汚れを抑制すると共に、
既に付着している汚れを徐々に剥離除去することができ
る連続鋳造設備二次冷却水用処理剤を提供することを目
的とする。In order to solve the above-mentioned problem of blockage of a strainer and a spray nozzle of a conventional secondary cooling water system, the present invention suppresses contamination in the secondary cooling water system of continuous casting equipment, and
It is an object of the present invention to provide a treatment agent for secondary cooling water of a continuous casting facility that can gradually remove the stains that have already adhered.
【００１３】[0013]
【課題を解決するための手段】本発明の連続鋳造設備二
次冷却水用処理剤は、カルシウム及び／又は鉄に対して
溶解力を有するスケール防止剤と、遅効性スライムコン
トロール剤とを含むことを特徴とする。The treatment agent for secondary cooling water of a continuous casting facility of the present invention contains a scale inhibitor having a dissolving power for calcium and / or iron, and a slow-acting slime control agent. Is characterized by.
【００１４】以下に本発明を詳細に説明する。The present invention will be described in detail below.
【００１５】本発明の連続鋳造設備二次冷却水用処理剤
において、カルシウム及び／又は鉄に対して溶解力を有
するスケール防止剤とは、既に系内に析出しているカル
シウム及び／又は鉄系スケールに吸着してこれらを溶解
させる能力を有するものであり、例えばヒドロキシエチ
リデンジホスホン酸等のホスホン酸類が挙げられる。In the treatment agent for secondary cooling water of the continuous casting facility of the present invention, the scale inhibitor having a dissolving power for calcium and / or iron means a calcium and / or iron-based agent which has already precipitated in the system. It has an ability to be adsorbed on a scale and dissolve them, and examples thereof include phosphonic acids such as hydroxyethylidene diphosphonic acid.
【００１６】一方、遅効性スライムコントロール剤と
は、系内の汚れ成分に吸着した後、徐々に効果を発揮す
るものであって、具体的には、クロロメチルイソチアゾ
ロン、メチレンビスチオシアネート、ブロモニトロプロ
パンジオール、ベンゾイソチアゾリン、ジクロロジチオ
ラン等が挙げられる。On the other hand, the slow-acting slime control agent is one that gradually exerts its effect after being adsorbed on the soil components in the system, and specifically, chloromethylisothiazolone, methylenebisthiocyanate, bromonitropropane. Examples thereof include diol, benzisothiazoline, dichlorodithiolane and the like.
【００１７】本発明の連続鋳造設備二次冷却水用処理剤
において、前記スケール防止剤及び上記遅効性スライム
コントロール剤の含有割合は、重量比で、スケール防止
剤：遅効性スライムコントロール剤＝５０：１〜１：
１、特に２０：１〜５：１とするのが好ましい。In the treatment agent for secondary cooling water of the continuous casting facility of the present invention, the content ratio of the scale inhibitor and the slow-acting slime control agent is a weight ratio, and the scale inhibitor: slow-acting slime control agent = 50: 1-1:
It is preferably 1 and particularly 20: 1 to 5: 1.
【００１８】このような本発明の連続鋳造設備二次冷却
水用処理剤は、これを二次冷却水系に間欠的（例えば、
定期的に一定量を注入する。）又は連続的（例えば、低
濃度薬注を常時行う。）に注入することにより、スケー
ル防止剤によるスケールの溶解作用と、遅効性スライム
コントロール剤による系内汚染の緩速洗浄（分散洗浄）
作用で、洗浄剥離物によるノズル等の閉塞障害を引き起
こすことなく、良好な閉塞防止効果を得ることができ
る。Such a treatment agent for secondary cooling water of the continuous casting equipment of the present invention is intermittently added to the secondary cooling water system (for example,
Inject a fixed amount regularly. ) Or continuous (for example, low-concentration chemical injection is always performed) to slowly dissolve the scale by the scale inhibitor and slowly wash the system contamination with the delayed-acting slime control agent (dispersed wash).
By the action, it is possible to obtain a good blocking prevention effect without causing a blocking obstacle such as a nozzle due to the washed and peeled material.
【００１９】なお、本発明の連続鋳造設備二次冷却水用
処理剤の薬注量は、通常の場合、水系内の有効成分濃度
が１〜１００ｍｇ／ｌ、好ましくは１０〜５０ｍｇ／ｌ
程度となるようにするのが好ましい。The amount of the chemical treatment agent for secondary cooling water of the continuous casting equipment of the present invention is usually 1 to 100 mg / l, preferably 10 to 50 mg / l of the active ingredient concentration in the water system.
It is preferable to adjust the degree.
【００２０】[0020]
【作用】前述の如く、二次冷却水系の汚れ成分には、溶
解塩類が析出して結晶状に付着した無機晶析物と、スラ
イムによる有機物と、これらの付着現象に伴なって抱き
込まれる懸濁物質（ＳＳ）とがある。これらの汚れ成分
の実際の付着形態は、無機晶析物を核として、これに、
スライムによる有機物が懸濁物質を抱き込んで付着成長
したものである。As described above, the dirt component of the secondary cooling water system is entangled with the inorganic crystallized product in which dissolved salts are deposited and adhered in a crystalline form, and the organic substance due to slime, along with the adhesion phenomenon. There are suspended substances (SS). The actual adhesion form of these dirt components is based on the inorganic crystallized substance,
The organic substance by slime is a substance that has suspended and suspended and has adhered and grown.
【００２１】このような付着物の剥離洗浄によって、ス
トレーナやノズルが閉塞するのは、核となる晶析物が粗
大であること、洗浄が短時間に急激に行なわれ、剥離物
濃度が高くなることによる。The strainer and the nozzle are clogged by the peeling and washing of such deposits because the crystallized substance as the core is coarse, and the washing is rapidly performed in a short time, and the concentration of the peeled substances becomes high. It depends.
【００２２】従って、閉塞防止対策としては、晶析物を
改質して小塊に分解させると共に、塩素剤のような速効
性のスライム剥離剤を用いずに洗浄により付着物を徐々
に剥離することが考えられる。Therefore, as a measure for preventing clogging, the crystallization product is modified to decompose into small lumps, and the deposits are gradually removed by washing without using a fast-acting slime remover such as a chlorine agent. It is possible.
【００２３】本発明においては、連続鋳造設備の二次冷
却水系における無機晶析物を構成するカルシウム及び／
又は鉄に対して溶解力を有するスケール防止剤により、
無機晶析物を改質して小塊に分解させる。In the present invention, calcium and / or the inorganic crystallized substances constituting the secondary cooling water system of the continuous casting equipment are used.
Or, with a scale inhibitor having a dissolving power for iron,
The inorganic crystallized product is modified and decomposed into small pieces.
【００２４】同時に、汚れ成分に吸着した後、徐々に洗
浄効果を発揮する遅効性スライムコントロール剤によ
り、洗浄剥離物濃度の急激な上昇を引き起こすことな
く、長期にわたり、適度な洗浄効果を得ることができ
る。At the same time, after adsorbing to the dirt component, the slow-acting slime control agent that gradually exhibits the cleaning effect can obtain a suitable cleaning effect for a long period of time without causing a sharp increase in the concentration of the peeled product after cleaning. it can.
【００２５】これに対して、速効性のスライムコントロ
ール剤では、前述の如く、短時間で大量の洗浄剥離物が
発生することによる閉塞障害を引き起こす上に、反応速
度が速いため、消耗速度も速く、効果の持続性は得られ
ない。On the other hand, the fast-acting slime control agent causes clogging failure due to the generation of a large amount of washed and peeled material in a short time as described above, and also has a high reaction rate, and therefore has a high consumption rate. , The effect cannot be sustained.
【００２６】[0026]
【実施例】以下に実施例を挙げて本発明をより具体的に
説明するが、本発明はその要旨を超えない限り、以下の
実施例に限定されるものではない。The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to the following examples as long as the gist thereof is not exceeded.
【００２７】実施例１ 連続鋳造設備の実系二次冷却水流路に、１００メッシュ
のＳＵＳ３０４製の円筒形金網を浸漬して１ケ月通水
し、下記の如く、汚れが付着したテストピースを作成し
た。なお、テストピース形状は直径２０ｍｍ、長さ５０
ｍｍである。Example 1 A 100 mesh SUS304 cylindrical wire mesh was immersed in the actual secondary cooling water flow path of a continuous casting facility and water was passed for one month to prepare a test piece with stains as shown below. did. The test piece has a diameter of 20 mm and a length of 50.
mm.
【００２８】テストピース 付着物量：２００〜３００ｍｇ （付着速度換算：１０〜１５ｍｇ／ｃｍ2 ／一ケ月） 付着物組成（重量％）： ＣａＯ ＝１８．０ Ｆｅ2 Ｏ3 ＝４７．８ フッ素 ＝ ６．５ ＣＯ2 ＝ ５．０ 酸不溶解分＝ ８．２ 強熱減量 ＝１５．７ なお、付着物の表面は粘質状であったが、晶析スケール
であるＣａＣＯ3 ，ＣａＦ2 の付着も確認された。 Test piece deposit amount: 200 to 300 mg (attachment rate conversion: 10 to 15 mg / cm 2 / one month) Deposit composition (wt%): CaO = 18.0 Fe 2 O 3 = 47.8 Fluorine = 6 0.5 CO 2 = 5.0 Acid insoluble matter = 8.2 Ignition loss = 15.7 Although the surface of the deposit was sticky, the deposition of CaCO 3 and CaF 2 on the crystallization scale Was also confirmed.
【００２９】この実系二次冷却水を１リットル容積のビ
ーカーに各々１リットル採り、上記テストピースを吊し
た後、表１に示す各薬剤を表１に示す量添加し、スター
ラで１０日間攪拌した。試験水は毎日交換し、薬剤は初
回及び５日目の試験水準備時にのみ添加した。なお、試
験水の水質は下記の通りである。1 liter of each of the actual secondary cooling water was placed in a beaker having a volume of 1 liter, the test pieces were hung, the respective chemicals shown in Table 1 were added in the amounts shown in Table 1, and the mixture was stirred with a stirrer for 10 days. did. The test water was changed daily, and the drug was added only when preparing the test water on the first and fifth days. The water quality of the test water is as follows.
【００３０】試験水の水質 ｐＨ ：７．１〜８．１ 電気伝導率 ：５００〜８００μＳ／ｃｍ Ｍアルカリ度 ： ４０〜８０ｍｇ−ＣａＣＯ3 ／ｌ カルシウム硬度： ４０〜９０ｍｇ−ＣａＣＯ3 ／ｌ ＳｉＯ2 ： ４０〜５０ｍｇ−ＳｉＯ2 ／ｌ 全鉄 ：０．１〜２．０ｍｇ−Ｆｅ／ｌ フッ素 ： ３０〜５５ｍｇ−Ｆ／ｌ ＳＳ ： ３〜１０ｍｇ／ｌ 菌数 ：１．４〜３．６×１０5 個／ｍｌ テスト前後のテストピース重量を測定して汚れ除去率を
算出すると共に、肉眼観察を行い、各薬剤による効果を
判定し、結果を表１に示した。なお、判定の基準は除去
率が２０％未満×、２０〜５０％△、５１〜８４％○、
８５％以上◎とした。 Water quality of test water pH: 7.1-8.1 Electric conductivity: 500-800 μS / cm M Alkalinity: 40-80 mg-CaCO 3 / l Calcium hardness: 40-90 mg-CaCO 3 / l SiO 2 : 40~50mg-SiO 2 / l total iron: 0.1~2.0mg-Fe / l fluorine: 30~55mg-F / l SS: 3~10mg / l number of bacteria: 1.4~3.6 × The test piece weight before and after the 10 5 pieces / ml test was measured to calculate the stain removal rate, and the naked eye observation was performed to determine the effect of each drug, and the results are shown in Table 1. In addition, the criterion of the judgment is that the removal rate is less than 20% ×, 20 to 50% Δ, 51 to 84% ○,
85% or more was set to ◎.
【００３１】[0031]
【表１】 [Table 1]
【００３２】表１より本発明の連続鋳造設備二次冷却水
用処理剤によれば、スケール防止剤と遅効性のスライム
コントロール剤との併用により、良好な分散洗浄効果
で、付着スケールが剥離されると共に、スケールの付着
が防止されることが明らかである。From Table 1, according to the treatment agent for secondary cooling water of the continuous casting equipment of the present invention, the combined scale and the slow-acting slime control agent are used together, and the adhered scale is peeled off with a good dispersion cleaning effect. At the same time, it is clear that scale adhesion is prevented.
【００３３】実施例２ 実施例１で得られた結果を基に、ＨＥＤＰ／Ｃｌ−ＭＩ
Ｔ＝１９：１（重量比）の処理剤を調製し、これを用い
て、下記実系テストを行った。Example 2 Based on the results obtained in Example 1, HEDP / Cl-MI
A treating agent of T = 19: 1 (weight ratio) was prepared, and the following actual system test was conducted using the treating agent.
【００３４】※目的：給水配管（ＳＵＳ−３０４材質）
の堆積スケールの剥離洗浄効果の確認なお、スケール組
成及び給水水質は下記の通りである。[Purpose]: Water supply piping (SUS-304 material)
Confirmation of the effect of peeling and cleaning of the accumulated scale of No. 3) The scale composition and water quality of the feed water are as follows.
【００３５】スケール（外観：黒褐色層状）組成（重量％） ＣａＯ ：１５．５ Ｆｅ2 Ｏ3 ：３７．０ フッ素 ： ９．５ ＣＯ2 ： ４．６ 酸不溶解分：１０．８ 強熱減量 ：２２．３給水水質 ｐＨ ：７．１〜８．３ 電気伝導率 ：５００〜８００μＳ／ｃｍ Ｍアルカリ度 ： ４０〜８０ｍｇ−ＣａＣＯ3 ／ｌ カルシウム硬度： ４０〜９０ｍｇ−ＣａＣＯ3 ／ｌ ＳｉＯ2 ： ４０〜５０ｍｇ−ＳｉＯ2 ／ｌ 全鉄 ：０．１〜２．０ｍｇ−Ｆｅ／ｌ フッ素 ： ３０〜５５ｍｇ−Ｆ／ｌ ＳＳ ： ２〜１４ｍｇ／ｌ 菌数 ：１．０〜３．５×１０5 個／ｍｌ ※薬注条件：給水に対し処理剤２０ｍｇ／ｌを３日毎に
２時間注入 ※試験期間：４５日間 その結果、過去５年間に付着していた２ｍｍ厚のスケー
ルが４５日後に剥離洗浄され、ステンレス配管内面の地
肌がはっきりと見える程清浄になった。 Scale (appearance: blackish brown layer) Composition (% by weight) CaO: 15.5 Fe 2 O 3 : 37.0 Fluorine: 9.5 CO 2 : 4.6 Acid insoluble matter: 10.8 Ignition loss : 22.3 Supply water quality pH: 7.1-8.3 Electric conductivity: 500-800 μS / cm M Alkalinity: 40-80 mg-CaCO 3 / l Calcium hardness: 40-90 mg-CaCO 3 / l SiO 2 : 40~50mg-SiO 2 / l total iron: 0.1~2.0mg-Fe / l fluorine: 30~55mg-F / l SS: 2~14mg / l cell count: 1.0 to 3.5 × 10 5 pieces / ml * Chemical injection condition: 20 mg / l of treatment agent is injected into the water supply every 3 days for 2 hours * Test period: 45 days As a result, the scale of 2 mm thickness adhered in the past 5 years peels off after 45 days Cleaned and stainless steel pipe inner surface It became so clean that you could clearly see the background.
【００３６】この試験期間を通して、ストレーナやノズ
ルの詰まりが助長される現象は見られず、分散洗浄に伴
なう剥離物は微粒子に分散してストレーナやノズルをス
ムーズに通過したものと判断された。Throughout this test period, the phenomenon that the clogging of the strainer and the nozzle was not promoted was not observed, and it was judged that the exfoliated substances due to the dispersion cleaning were dispersed into fine particles and smoothly passed through the strainer and the nozzle. .
【００３７】[0037]
【発明の効果】以上詳述した通り、本発明の連続鋳造設
備二次冷却水用処理剤によれば、連続鋳造設備の二次冷
却水系のストレーナや散水ノズルの閉塞を長期にわたり
有効に防止して、均一かつ安定な散水を確実に行うこと
が可能とされる。As described above in detail, according to the treatment agent for secondary cooling water of the continuous casting equipment of the present invention, the strainer of the secondary cooling water system of the continuous casting equipment and the clogging of the sprinkling nozzle can be effectively prevented for a long period of time. Therefore, it is possible to surely perform uniform and stable watering.
Claims (1)
を有するスケール防止剤と、遅効性スライムコントロー
ル剤とを含む連続鋳造設備二次冷却水用処理剤。1. A treatment agent for secondary cooling water of a continuous casting facility, comprising a scale inhibitor having a dissolving power for calcium and / or iron and a slow-acting slime control agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6062516A JP2888133B2 (en) | 1994-03-31 | 1994-03-31 | Continuous casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6062516A JP2888133B2 (en) | 1994-03-31 | 1994-03-31 | Continuous casting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07265846A true JPH07265846A (en) | 1995-10-17 |
| JP2888133B2 JP2888133B2 (en) | 1999-05-10 |
Family
ID=13202433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6062516A Expired - Lifetime JP2888133B2 (en) | 1994-03-31 | 1994-03-31 | Continuous casting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2888133B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010274195A (en) * | 2009-05-28 | 2010-12-09 | Kurita Water Ind Ltd | Iron scale sticking preventing method for converter dust collection water system and sticking inhibitor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0360799A (en) * | 1989-07-31 | 1991-03-15 | Akuasu Kk | Cooling water-treating agent and treatment of cooling water |
| JPH05154462A (en) * | 1991-12-10 | 1993-06-22 | Ebara Infilco Co Ltd | Method and device for adding chemicals liquid |
-
1994
- 1994-03-31 JP JP6062516A patent/JP2888133B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0360799A (en) * | 1989-07-31 | 1991-03-15 | Akuasu Kk | Cooling water-treating agent and treatment of cooling water |
| JPH05154462A (en) * | 1991-12-10 | 1993-06-22 | Ebara Infilco Co Ltd | Method and device for adding chemicals liquid |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010274195A (en) * | 2009-05-28 | 2010-12-09 | Kurita Water Ind Ltd | Iron scale sticking preventing method for converter dust collection water system and sticking inhibitor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2888133B2 (en) | 1999-05-10 |
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