JP2000273554A - Binder for oily scale, and processing method - Google Patents
Binder for oily scale, and processing methodInfo
- Publication number
- JP2000273554A JP2000273554A JP8172499A JP8172499A JP2000273554A JP 2000273554 A JP2000273554 A JP 2000273554A JP 8172499 A JP8172499 A JP 8172499A JP 8172499 A JP8172499 A JP 8172499A JP 2000273554 A JP2000273554 A JP 2000273554A
- Authority
- JP
- Japan
- Prior art keywords
- caustic soda
- added
- binder
- oil
- briquettes
- 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.)
- Granted
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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【０００１】[0001]
【発明が属する技術分野】本発明は、製鉄所において発
生する、機械油、グリス、圧延油等が付着した酸化鉄を
主成分とするスケールをペレットないしブリケット状に
固めるために用いるバインダーと、該バインダーを用い
て上記含油スケールをペレットないしブリケット状に成
形加工する方法に関する。[0001] The present invention relates to a binder used for solidifying a scale mainly composed of iron oxide to which a mechanical oil, grease, rolling oil, or the like generated in an ironworks is attached, in the form of pellets or briquettes. The present invention relates to a method of forming the oil-containing scale into pellets or briquettes using a binder.
【０００２】[0002]
【従来技術】製鉄所における、例えば圧延工程では、圧
延油が付着する含油スケールが発生する。こうしたスケ
ールは近年、鉄資源として再使用すべく転炉に装入して
溶鋼の冷却材やスロッピング防止材として用いている
が、スケールは通常、粒度が２００μm 以下の微粒状を
なすため転炉に装入するに当たっては、ペレットないし
ブリケット状に加工する必要がある。微粒状のスケール
を転炉にそのまゝ装入すると、排ガスと共に排出される
からである。2. Description of the Related Art In a steel mill, for example, in a rolling process, an oil-containing scale to which rolling oil adheres is generated. In recent years, such scales have been used in converters to be reused as iron resources and are used as coolant for molten steel and as anti-sloping materials.However, scales are usually in the form of fine particles with a particle size of 200 μm or less. It is necessary to process it into pellets or briquettes when charging it. This is because if the fine-grained scale is directly charged into the converter, it is discharged together with the exhaust gas.
【０００３】スケールをペレットないしブリケット状に
加工するためにはバインダーが用いられるが、バインダ
ーとしては、成形性をもたせるためバインダー添加直後
のスケールが適度な流動性を有すること、少量のバイン
ダーで成形後、ハンドリングや転炉装入に耐え得る十分
な強度を発揮できること、転炉装入の際、引火しないこ
と等が必要とされ、そのため水溶性のもの、例えば澱
粉、カルボキシメチルセルロース（以下、「ＣＭＣ」と
いう）、ベントナイト、セメント等が用いられ、また特
公昭５７−３７４６９号にはバインダーとして生石灰１
０〜２５％、粘結剤１〜５％を用いたものが開示されて
いる。[0003] A binder is used to process the scale into pellets or briquettes. As the binder, the scale immediately after the addition of the binder must have an appropriate fluidity to provide moldability. It is necessary to exhibit sufficient strength to withstand handling and charging in a converter, and not to catch fire when charging the converter. Therefore, water-soluble materials such as starch and carboxymethylcellulose (hereinafter referred to as "CMC") are required. ), Bentonite, cement, etc. are used, and quicklime 1 is used as a binder in Japanese Patent Publication No. 57-37469.
One using 0 to 25% and 1 to 5% of a binder is disclosed.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、含油スケー
ルをペレットないしブリケット状に加工したときに十分
な強度が得られるようなバインダーと、該バインダーを
用いた成形加工方法を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a binder capable of obtaining sufficient strength when an oil-containing scale is processed into pellets or briquettes, and a molding method using the binder. And
【０００５】[0005]
【課題の解決手段】請求項１記載の発明は、含油スケー
ルをペレットないしブリケット状に固めるために用いる
バインダーに関するもので、生石灰ＣａＯと苛性ソーダ
ＮａＯＨよりなることを特徴とする。請求項２記載の発
明は、請求項１記載の発明のバインダーを用いた含油ス
ケールの加工方法に関するもので、含油スケールに生石
灰と苛性ソーダを混合したのちペレットないしブリケッ
ト状に成形加工することを特徴とし、請求項３記載の発
明は、生石灰の添加量を８〜１５wt％好ましくは１０wt
％、苛性ソーダの添加量を５〜１０wt％、好ましくは８
wt％としたことを特徴とする。The invention according to claim 1 relates to a binder used to solidify the oil-containing scale into pellets or briquettes, and is characterized by comprising quicklime CaO and caustic soda NaOH. The invention according to claim 2 relates to a method for processing an oil-impregnated scale using the binder according to the invention according to claim 1, characterized in that quicklime and caustic soda are mixed into the oil-impregnated scale and then formed into pellets or briquettes. According to a third aspect of the present invention, the amount of quicklime added is 8 to 15 wt%, preferably 10 wt%.
%, The amount of added caustic soda is 5 to 10% by weight, preferably 8%.
It is characterized by wt%.
【０００６】ここで生石灰の添加量は多い程、ペレット
ないしブリケット状に加工した含油スケールの強度が上
がるが、反面コスト高となる。生石灰の添加量を８〜１
５wt％としたのは、強度とコストを考慮し、８wt％未満
では十分な強度が得られず、また１５wt％を越えると、
コスト上好ましくないためである。また苛性ソーダの添
加量を５〜１０wt％としたのは、５wt％未満では含油ス
ケール中の油の分解が十分に進行しないため、ペレット
ないしブリケット化が困難で、また１０wt％を越える
と、転炉装入までのハンドリングに耐える十分な強度が
得られなくなるためである。[0006] Here, as the amount of quicklime added is larger, the strength of the oil-containing scale processed into pellets or briquettes increases, but the cost increases. 8 to 1 of quicklime
Considering the strength and cost, the strength is set to 5 wt%. If the strength is less than 8 wt%, sufficient strength cannot be obtained.
This is because it is not preferable in terms of cost. The reason why the content of caustic soda is set to 5 to 10% by weight is that if it is less than 5% by weight, the decomposition of the oil in the oil-containing scale does not proceed sufficiently, making it difficult to form pellets or briquettes. This is because sufficient strength to withstand handling up to charging cannot be obtained.
【０００７】請求項２記載の発明において、含油スケー
ルに添加される生石灰と苛性ソーダは、先ず生石灰を添
加して混合し、この混合物を一日程度放置してから苛性
ソーダを添加して混合するのが望ましい。生石灰と混合
して一日程度放置することにより混合物の粘度が上が
り、ペレットないしブリケット状に加工したときの初期
強度が上がるためである。According to the second aspect of the present invention, quick lime and caustic soda to be added to the oil-containing scale are mixed first by adding quick lime, and the mixture is allowed to stand for about one day before adding caustic soda and mixing. desirable. This is because the viscosity of the mixture increases by being mixed with quicklime and left for about one day, and the initial strength when processed into pellets or briquettes increases.
【０００８】なお、請求項２記載の発明において、含油
スケールにバインダーを添加して成形加工する際には、
例えば図１に示すようなブリケットマシーンを用いるこ
とができる。この装置は、円周方向に一定間隔で窪み１
を有する一対のローラ２をモータにより回転駆動させて
窪み１が合致するように連動させ、ローラ間に上方のホ
ッパー３よりバインダーを添加した含油スケール４を供
給して窪み１で豆炭状に圧縮成形加工するようになって
いる。５は成形加工されたブリケットを示す。[0008] In the invention according to claim 2, when a molding process is performed by adding a binder to the oil-containing scale,
For example, a briquette machine as shown in FIG. 1 can be used. This device is designed so that recesses 1
A pair of rollers 2 having a rotation are driven by a motor and linked so that the depressions 1 coincide with each other, and an oil-containing scale 4 to which a binder is added is supplied from an upper hopper 3 between the rollers, and the depressions 1 are compression-molded into bean charcoal. It is designed to be processed. Reference numeral 5 denotes a briquette that has been formed.
【０００９】請求項４記載の発明は、請求項２又は３記
載の発明において、苛性ソーダ添加後、少量の水、好ま
しくは１〜２wt％の水を添加することを特徴とする。本
発明によると、水の添加により苛性ソーダが発熱し、油
分が滲み出るようになる。これは水の添加により苛性ソ
ーダが発熱し、混合物中の蒸気圧が上がって気泡が発生
し、この気泡を通して油が滲み出るためと思われる。ま
た、生石灰単独の添加では油の分解に要する時間が長く
なるが、苛性ソーダと併せて添加することにより、分解
時間が短縮する。According to a fourth aspect of the present invention, in the second or third aspect, a small amount of water, preferably 1 to 2% by weight of water is added after the addition of the caustic soda. According to the present invention, the addition of water causes the caustic soda to generate heat and the oil to ooze out. This is presumably because the addition of water generates caustic soda, increasing the vapor pressure in the mixture to generate air bubbles, and oil oozes through the air bubbles. The addition of quicklime alone increases the time required for oil decomposition, but the addition of it together with caustic soda shortens the decomposition time.
【００１０】[0010]
【発明の実施の形態】図２は、本発明に係わる加工方法
について示すもので、圧延工程で発生する含油スケール
に生石灰１０wt％を添加してミキサーにて混合し（ステ
ップ１）、混合物はミキサーから排出し一日放置する
（ステップ２）。次に一日放置した混合物を再びミキサ
ーに装入し、ミキサー中の粘土状スラジに苛性ソーダ５
〜１０wt％を添加し、水１wt％を加えて再度混合する
（ステップ３）。ついでこの混合物を図２に示す加工装
置のホッパー３に入れ、１００kg /cm2 の圧縮成形圧力
で４０ccの豆炭状をなすブリケットに形成加工する（ス
テップ４）。その後、得られたブリケットを一日放置す
る（ステップ５）。ペレットの製造に関しては、図２に
示す加圧装置に入る手前の混合工程までは同一工程で得
られ、その後これをホッパーに入れ、別な切出し装置を
用いて団子状に切り出し、該団子を直径１．５ｍのパン
型ペレタイザーに装入して、該ペレタイザーを１０rpm
で回転させ、直径２５mm程度のペレットを製造する。そ
して得られたペレットを一日放置する。FIG. 2 shows a processing method according to the present invention. 10% by weight of quicklime is added to an oil-containing scale generated in a rolling process and mixed with a mixer (step 1). And left for one day (step 2). Next, the mixture left for one day is charged again into the mixer, and the clay-like sludge in the mixer is mixed with caustic soda 5
Add 10 wt%, 1 wt% of water and mix again (step 3). The mixture is then placed in the hopper 3 of the processing apparatus shown in FIG. 2 and formed into 40 cc briquettes in the form of charcoal at a compression molding pressure of 100 kg / cm 2 (step 4). Then, the obtained briquettes are left for one day (step 5). Regarding the production of pellets, the same process is performed up to the mixing process before entering the pressurizing device shown in FIG. 2, and thereafter, the product is put into a hopper, cut out into a dumpling using another cutting device, and the dumpling is cut into a diameter. Charge the pelletizer into a 1.5 m pan-type pelletizer, and rotate the pelletizer at 10 rpm.
To produce pellets having a diameter of about 25 mm. Then, the obtained pellet is left for one day.
【００１１】[0011]
【実施例】表１に示す組成の含油スケール（含油量９wt
％）に対し、図２に示す方法で表２の実施例１〜４の添
加割合で混練した材料を４０ccの立方形状をなすブリケ
ットを得た。そして成形後一日放置したのち上方より７
０kg/cm2の圧力を掛けて圧壊試験を行ったところ、圧壊
されなかった。表２は以上の結果を示す。EXAMPLE An oil-impregnated scale (oil content 9 wt.%) Having the composition shown in Table 1
%) By the method shown in FIG. 2 to obtain 40 cc cubic briquettes of the material kneaded at the addition ratio of Examples 1 to 4 in Table 2. And after leaving for one day after molding, 7
When a crush test was performed by applying a pressure of 0 kg / cm 2, no crush was found. Table 2 shows the above results.
【００１２】[0012]
【表１】 [Table 1]
【００１３】[0013]
【表２】 [Table 2]
【００１４】比較例 実施例と同じ含油スケールに対し、表３に示す各種のバ
インダーを添加してミキサーにて混合したのち、２８〜
４１ccの立方形状をなすブリケットを成形加工した。そ
して得られたブリケットを実施例と同様、１日放置した
のち、それぞれについて実施例と同じ圧壊試験を行った
ところ、いづれの場合も圧壊した。表３は以上の結果を
示す。Comparative Example Various binders shown in Table 3 were added to the same oil-containing scale as in the example and mixed with a mixer.
A 41 cc cubic briquette was formed. Then, the obtained briquettes were allowed to stand for one day in the same manner as in the examples, and the same crush test as in the examples was performed on each of them. Table 3 shows the above results.
【００１５】[0015]
【表３】 表２及び表３において、×は圧壊、〇は圧壊しなかった
ことを示す。[Table 3] In Tables 2 and 3, x indicates crushing, and 〇 indicates no crushing.
【００１６】[0016]
【発明の効果】本発明に係わるバインダー及び該バイン
ダーを用いた加工方法によると、含油スケールをペレッ
トないしブリケット状に加工したときに、十分な強度が
得られる。According to the binder and the processing method using the binder according to the present invention, when the oil-containing scale is processed into pellets or briquettes, sufficient strength can be obtained.
【図１】加工装置の概略図。FIG. 1 is a schematic diagram of a processing apparatus.
【図２】加工方法のフロー図。FIG. 2 is a flowchart of a processing method.
１・・窪み ２・・ローラ ３・・ホッパー ４・・含油スケール ５・・ブリケット 1. Depression 2. Roller 3. Hopper 4. Oil-impregnated scale 5. Briquette
───────────────────────────────────────────────────── フロントページの続き (72)発明者 平賀 由多可 広島県呉市昭和町11番１号 日新製鋼株式 会社呉製鉄所内 (72)発明者 寺山 統 広島県呉市昭和町11番１号 日新製鋼株式 会社呉製鉄所内 (72)発明者 仁井岡 武十郎 広島県呉市中通１丁目３番14号 東方金属 株式会社内 Ｆターム(参考） 4K001 AA10 BA15 CA29 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yutaka Hiraga 111-1 Showa-cho, Kure-shi, Hiroshima Nisshin Steel Co., Ltd. Inside Kure Works (72) Inventor Tsuyoshi Terayama 11-1 Showa-cho, Kure-shi, Hiroshima No. Nisshin Steel Co., Ltd. Kure Works (72) Inventor Takejuro Niioka 1-3-14 Nakadori, Kure City, Hiroshima Prefecture Toho Metal Co., Ltd. F-term (reference) 4K001 AA10 BA15 CA29
Claims (4)
状に固めるために用いるバインダーであって、生石灰と
苛性ソーダよりなることを特徴とするバインダー。1. A binder used for solidifying an oil-containing scale into pellets or briquettes, wherein the binder comprises quicklime and caustic soda.
状に成形加工する方法であって、含油スケールに生石灰
と苛性ソーダを混合したのちペレットないしブリケット
状に成形加工することを特徴とする加工方法。2. A method for forming an oil-containing scale into pellets or briquettes, comprising mixing quicklime and caustic soda into the oil-containing scales and forming the mixture into pellets or briquettes.
ダの添加量を５〜１０wt％としたことを特徴とする請求
項２記載の加工方法。3. The processing method according to claim 2, wherein the amount of quicklime added is 8 to 15% by weight and the amount of caustic soda is 5 to 10% by weight.
とを特徴とする請求項２又は３記載の加工方法。4. The processing method according to claim 2, wherein a small amount of water is added after the addition of the caustic soda.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8172499A JP4040199B2 (en) | 1999-03-25 | 1999-03-25 | Oil-impregnated scale processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8172499A JP4040199B2 (en) | 1999-03-25 | 1999-03-25 | Oil-impregnated scale processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000273554A true JP2000273554A (en) | 2000-10-03 |
| JP4040199B2 JP4040199B2 (en) | 2008-01-30 |
Family
ID=13754373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8172499A Expired - Fee Related JP4040199B2 (en) | 1999-03-25 | 1999-03-25 | Oil-impregnated scale processing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4040199B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100367333B1 (en) * | 2000-08-16 | 2003-01-09 | 최종혜 | Solidification method of revival cutting chip and iron powder |
| WO2009037943A1 (en) * | 2007-09-18 | 2009-03-26 | Kabushiki Kaisha Kobe Seiko Sho | Method for producing briquette with carbonaceous material incorporated therein by use of oil-containing iron-making plant dust |
| KR101405485B1 (en) | 2012-07-02 | 2014-06-11 | 주식회사 포스코 | Compacting machine |
| WO2023027093A1 (en) * | 2021-08-25 | 2023-03-02 | 協材興業株式会社 | Method for processing clayey sludge |
-
1999
- 1999-03-25 JP JP8172499A patent/JP4040199B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100367333B1 (en) * | 2000-08-16 | 2003-01-09 | 최종혜 | Solidification method of revival cutting chip and iron powder |
| WO2009037943A1 (en) * | 2007-09-18 | 2009-03-26 | Kabushiki Kaisha Kobe Seiko Sho | Method for producing briquette with carbonaceous material incorporated therein by use of oil-containing iron-making plant dust |
| JP2009074105A (en) * | 2007-09-18 | 2009-04-09 | Kobe Steel Ltd | Method for manufacturing carbonaceous-material-containing briquette by using oil-containing dust in ironworks |
| AU2008301824B2 (en) * | 2007-09-18 | 2011-03-03 | Kabushiki Kaisha Kobe Seiko Sho | Method for producing briquette with carbonaceous material incorporated therein by use of oil-containing iron-making plant dust |
| US8439987B2 (en) | 2007-09-18 | 2013-05-14 | Kobe Steel, Ltd. | Method of producing carbonaceous material-containing briquettes using steel mill dust containing oil |
| KR101405485B1 (en) | 2012-07-02 | 2014-06-11 | 주식회사 포스코 | Compacting machine |
| WO2023027093A1 (en) * | 2021-08-25 | 2023-03-02 | 協材興業株式会社 | Method for processing clayey sludge |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4040199B2 (en) | 2008-01-30 |
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