JP2003247026A - Briquette for recovering valuable metal in steel making by-product for electric smelting furnace and production method thereof - Google Patents
Briquette for recovering valuable metal in steel making by-product for electric smelting furnace and production method thereofInfo
- Publication number
- JP2003247026A JP2003247026A JP2002046549A JP2002046549A JP2003247026A JP 2003247026 A JP2003247026 A JP 2003247026A JP 2002046549 A JP2002046549 A JP 2002046549A JP 2002046549 A JP2002046549 A JP 2002046549A JP 2003247026 A JP2003247026 A JP 2003247026A
- Authority
- JP
- Japan
- Prior art keywords
- briquette
- weight
- smelting furnace
- steelmaking
- electric smelting
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、製鋼副産物中の有
価金属を回収するために電気製錬炉中に投入することが
できるブリケットとその製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a briquette that can be put into an electric smelting furnace for recovering valuable metals in steel by-products and a method for manufacturing the briquette.
【０００２】[0002]
【従来の技術】従来より、製鋼工程の電気炉や転炉で発
生したドライ状のダストや熱延工程で発生したドライ状
の熱延スケールや酸洗処理工程で発生したスラリー状の
廃洗スラッジを脱水し更に乾燥させたスラッジケーキの
ような製鋼副産物中の有価金属を回収するために、ブリ
ケットやペレットにするための技術が多々提案されてい
る。2. Description of the Related Art Conventionally, dry dust generated in an electric furnace or converter in a steelmaking process, dry hot rolled scale generated in a hot rolling process, or slurry waste washing sludge generated in a pickling process In order to recover valuable metals in steelmaking by-products such as sludge cake obtained by dewatering and further drying, various techniques have been proposed for forming briquettes and pellets.
【０００３】例えば、本出願人が提案した特開昭５１−
２８５１６号公報に開示されている「ステンレス鋼製造
工程中に発生する廃棄物の処理方法」は、製鋼副産物の
混練物をロータリーキルンにて８００〜１３００℃の温
度で焼成してペレット状にしているが、焼成処理で８０
０〜１３００℃という高温に加熱することで非常なコス
ト高となる欠点があった。For example, Japanese Patent Application Laid-Open No. 51-
In the "Method for treating waste generated during the stainless steel manufacturing process" disclosed in Japanese Patent No. 28516, a kneaded product of a steelmaking by-product is fired in a rotary kiln at a temperature of 800 to 1300 ° C to form a pellet. , Burning process 80
There is a drawback that heating to a high temperature of 0 to 1300 ° C. results in an extremely high cost.
【０００４】また、本出願人等が提案した特公昭５７−
６０４１０号公報に開示されている「ステンレス鋼製造
工程中に発生する廃棄物処理方法」と特公昭５６−３８
９４公報に開示されている「ステンレス鋼製造工程中に
発生する廃棄物処理方法」とは、製鋼副産物の固形分に
対して有機質バインダーを１〜５重量％を添加すると共
に水分８〜１４重量％に調整してブリケットに成形して
から低温加熱処理を行っているが、低温加熱処理で３０
０℃以上に加熱しなければならないためやはりコスト高
となる欠点があった。そして、これらの方法では、低温
加熱処理を行わなければ、有機質バインダー：１〜５重
量％ではブリケットの強度が不十分であり、電気製錬炉
の操業に支障を来すのである。更にこれらの方法には有
機系バインダーとして安価なパルプ廃液を用いることが
記載されているが、このパルプ廃液中には硫黄が含まれ
ているため、回収した有価金属中の硫黄含有量が高くな
り、これを製鋼原料として使用すれば後工程において脱
硫工程が必要となり、製鋼コスト高を招くという欠点も
あった。Also, Japanese Patent Publication No. 57-57 proposed by the present applicants.
Japanese Patent Publication No. 56-38, which discloses a method of treating wastes generated during the stainless steel manufacturing process, disclosed in Japanese Patent No. 60410.
The "waste treatment method generated during the stainless steel manufacturing process" disclosed in Japanese Patent Laid-Open No. 94 is that the organic binder is added in an amount of 1 to 5% by weight and the water content is 8 to 14% by weight with respect to the solid content of the steelmaking by-product. The low temperature heat treatment is performed after adjusting it to a briquette and forming it into a briquette.
Since it has to be heated to 0 ° C. or higher, there is a drawback that the cost becomes high. In these methods, unless the low-temperature heat treatment is performed, the strength of the briquette is insufficient with the organic binder: 1 to 5% by weight, which hinders the operation of the electric smelting furnace. Further, it is described in these methods that an inexpensive pulp waste liquid is used as an organic binder, but since the pulp waste liquid contains sulfur, the sulfur content in the recovered valuable metal becomes high. However, if this is used as a steelmaking raw material, a desulfurization step is required in a post-step, and there is also a drawback that the steelmaking cost is increased.
【０００５】同じく、本出願人等が提案した特公昭５６
−３８９５号公報に開示されている「合金鋼製造工程中
に発生する廃棄物処理法」は、製鋼副産物の固形分に対
してセメントを５〜１５重量％を添加すると共に水分４
〜１４重量％に調整してブリケットに成形してから低温
で自然養生若しくは蒸気養生を行っているが、原料の大
部分が微粉の粉体であるので、混練機や製団機、更には
混練後の移送設備への原料固着により連続操業が困難と
なるばかりか、使用する原材料中にカルシウムを含むセ
メントを使用しているためスラグの塩基度（ＣａＯ／Ｓ
ｉＯ2）の調整が面倒であるという欠点があった。ま
た、セメント中の硫酸カルシウムにより、後工程におい
て脱硫工程が必要になり、製鋼コスト高を招くという欠
点もあった。Similarly, Japanese Patent Publication No. 56-56 proposed by the present applicants.
In the "waste treatment method generated during alloy steel manufacturing process" disclosed in Japanese Patent No. 3895, 5 to 15% by weight of cement is added to the solid content of a steelmaking by-product and water content is 4%.
It is adjusted to ~ 14% by weight and molded into briquettes, and then naturally or steam-cured at low temperature. However, since most of the raw materials are fine powders, kneaders, lumpers, and even kneaders. Not only continuous operation becomes difficult due to the sticking of the raw material to the later transfer equipment, but also the basicity of the slag (CaO / S) due to the cement containing calcium in the raw material used.
There is a drawback that adjustment of iO 2 ) is troublesome. In addition, calcium sulfate in the cement requires a desulfurization step in a later step, resulting in a high steel manufacturing cost.
【０００６】また、特開２０００−１７８６６２公報に
開示されている「粉末金属原料用造粒剤及び湿式造粒
法」には、製鋼副産物にカルボキシメチルセルロースや
ポリビニルアルコール等をバインダーとして添加してペ
レットとする技術が提案されているが、副原料として粉
石灰石を添加し造粒してから１００℃で乾燥しているの
で、加熱乾燥によってコスト高となるばかりか、使用す
る原材料中にカルシウムを含む粉石灰石を使用している
ためスラグの塩基度（ＣａＯ／ＳｉＯ2）の調整が面倒
であるという欠点があった。Further, in the "granulating agent for powder metal raw material and wet granulation method" disclosed in Japanese Patent Laid-Open No. 2000-178662, carboxymethyl cellulose, polyvinyl alcohol or the like is added as a binder to a steel-making by-product to form pellets. However, since powder limestone is added as an auxiliary material and granulated and dried at 100 ° C, heating and drying not only increase the cost, but also the powder containing calcium in the raw material used. Since limestone is used, there is a drawback that adjusting the basicity (CaO / SiO 2 ) of the slag is troublesome.
【０００７】[0007]
【発明が解決しようとする課題】本発明は、前記従来技
術の欠点を解消し、スラグの塩基度（ＣａＯ／Ｓｉ
Ｏ2）の調整に対する配慮が不要で、製鋼副産物と還元
材としてのコークスと硫黄を含まない有機質バインダー
と水のみから成り、一切の加熱処理を要することなく、
目的とする強度（初期強度、養生後強度）を有し優れた
特性を有する電気製錬炉用の製鋼副産物中の有価金属回
収用ブリケット及びその製造方法を提供することを課題
とする。DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned drawbacks of the prior art, and the basicity of slag (CaO / Si
O 2 ) adjustment is not necessary, it consists of steelmaking by-product, coke as a reducing agent, organic binder containing no sulfur and water, and does not require any heat treatment.
An object of the present invention is to provide a briquette for recovering valuable metals in a steelmaking by-product for an electric smelting furnace having a desired strength (initial strength, strength after curing) and excellent characteristics, and a method for manufacturing the briquette.
【０００８】[0008]
【課題を解決するための手段】本発明者は前記課題を解
決すべく鋭意研究の結果、製鋼副産物とコークスとに２
５℃，１％濃度のＢ型粘度計による粘度が所定値以下の
ポリビニルアルコール及び／又はカルボキシメチルセル
ロースナトリウムを５〜１５重量％濃度の水溶液の状態
で固形分換算で０.８〜１.７重量％添加して混練後ブリ
ケットに製団し、そのまま自然養生を行ってそのブリケ
ットの含水率を３〜７.５重量％とすれば、電気製錬炉
用の製鋼副産物中の有価金属回収用ブリケットとして製
団時の初期強度も、また電気製錬炉に投入する際におけ
る強度も充分で且つ優れた特性を有するものが得られる
ことを究明して本発明を完成したのである。As a result of earnest research to solve the above-mentioned problems, the present inventor has found 2
Polyvinyl alcohol and / or sodium carboxymethyl cellulose having a viscosity of 5% or less at a concentration of 1% by a B-type viscometer is 0.8 to 1.7 weight in terms of solid content in an aqueous solution of 5 to 15 weight% concentration. % And kneaded into a briquette and then natural curing as it is, if the water content of the briquette is 3 to 7.5% by weight, the briquette for recovering valuable metals in steel by-products for electric smelting furnaces As a result, it was clarified that an initial strength at the time of making a smelting product and a strength at the time of charging into an electric smelting furnace were obtained, and a product having excellent characteristics was obtained, and the present invention was completed.
【０００９】即ち本発明に係る電気製錬炉用の製鋼副産
物中の有価金属回収用ブリケットは、２５℃，１％濃度
のＢ型粘度計による粘度が１５０ｍＰａ・ｓ以下のポリ
ビニルアルコール及び／又はカルボキシメチルセルロー
スナトリウム：０.８〜１.７重量％と水分：３〜７.５
重量％と残部である製鋼副産物とコークスとが混練され
てブリケットを成していることを特徴とするものであ
り、製鋼副産物は固形分換算で電気炉ダスト：２０〜４
０重量％、転炉ダスト：１０〜２０重量％、廃酸スラッ
ジ：３０〜６０重量％、スケール粉：１〜５重量％から
成り、コークスは４〜８重量％であることが好ましいこ
とを究明したのである。That is, the briquette for recovering valuable metals in the steelmaking by-product for the electric smelting furnace according to the present invention is polyvinyl alcohol and / or carboxy having a viscosity of 150 mPa · s or less measured by a B type viscometer at 25 ° C. and 1% concentration. Sodium methylcellulose: 0.8 to 1.7% by weight and water: 3 to 7.5
It is characterized in that the steelmaking by-product which is the balance and the balance and the coke are kneaded to form a briquette, and the steel-making by-product is an electric furnace dust in terms of solid content: 20 to 4
It was found that 0% by weight, converter dust: 10 to 20% by weight, waste acid sludge: 30 to 60% by weight, scale powder: 1 to 5% by weight, and coke is preferably 4 to 8% by weight. I did.
【００１０】そして、前記本発明に係る電気製錬炉用の
製鋼副産物中の有価金属回収用ブリケットを製造する本
発明に係る電気製錬炉用の製鋼副産物中の有価金属回収
用ブリケットの製造方法は、製鋼副産物及びコークス
に、２５℃，１％濃度のＢ型粘度計による粘度が１５０
ｍＰａ・ｓ以下のポリビニルアルコール及び／又はカル
ボキシメチルセルロースナトリウムの５〜１５重量％濃
度の水溶液を固形分換算で０.８〜１.７重量％添加して
混練後、ブリケットに製団し、該ブリケットの含水率が
３〜７.５重量％となるように自然養生を行うことを特
徴とする方法であり、製鋼副産物としては固形分換算で
電気炉ダスト：２０〜４０重量％、転炉ダスト：１０〜
２０重量％、廃酸スラッジ：３０〜６０重量％、スケー
ル粉：１〜５重量％から成るものを、コークスとしては
４〜８重量％を使用することが好ましく、自然養生は３
日以上行うことが好ましいことも究明したのである。Then, the method for producing the briquette for recovering valuable metal in the steel by-product for electric smelting furnace according to the present invention for producing the briquette for recovering valuable metal in the steel-making by-product for electric smelting furnace according to the present invention. Has a viscosity of 150% measured by a B-type viscometer at 25 ° C. and 1% concentration in the steelmaking by-product and coke.
An aqueous solution having a concentration of 5 to 15% by weight of polyvinyl alcohol and / or sodium carboxymethylcellulose of mPa · s or less is added in an amount of 0.8 to 1.7% by weight in terms of solid content, and the mixture is kneaded and then formed into a briquette, Is a natural curing so that the water content is 3 to 7.5% by weight, and the steelmaking by-products are electric furnace dust: 20 to 40% by weight, and converter dust: 10 to
20% by weight, waste acid sludge: 30 to 60% by weight, scale powder: 1 to 5% by weight, it is preferable to use 4 to 8% by weight as coke, and natural curing is 3
It was also determined that it is preferable to carry out the treatment for more than one day.
【００１１】[0011]
【発明の実施の形態】以下、本発明に係る電気製錬炉用
の製鋼副産物中の有価金属回収用ブリケットと電気製錬
炉用の製鋼副産物中の有価金属回収用ブリケットの製造
方法とについて詳細に説明する。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a briquette for recovering valuable metals in a steelmaking by-product for an electric smelting furnace and a method for manufacturing a briquette for recovering valuable metals in a steel-making byproduct for an electric smelting furnace according to the present invention will be described in detail. Explained.
【００１２】本発明者は、前記課題で述べたように、ブ
リケットに使用する原料としてスラグの塩基度に影響を
及ぼすカルシウムや珪素を積極的に添加すること無く、
即ち製鋼副産物とコークスと有機質バインダーと水との
みを原料とし、且つブリケットに製団する際に初期のハ
ンドリングによる粉化を防止できる初期強度は２５Ｋｇ
ｆ／個以上、電気製錬炉中に投入した際に粉化を防止で
きる養生後の最終強度は５０Ｋｇｆ／個以上がそれぞれ
必要であることを前提として、種々の有機質バインダー
について検討した。The present inventor, as described in the above-mentioned subject, does not actively add calcium or silicon, which affects the basicity of slag, as a raw material used for briquettes,
That is, only steelmaking by-product, coke, organic binder, and water are used as raw materials, and the initial strength capable of preventing pulverization due to initial handling when briquetting is 25 kg.
Various organic binders were studied on the premise that f / unit or more and final strength after curing capable of preventing pulverization when charged into an electric smelting furnace are 50 Kgf / unit or more, respectively.
【００１３】その結果、２５℃，１％濃度のＢ型粘度計
による粘度が１５０ｍＰａ・ｓ以下のポリビニルアルコ
ール及び／又はカルボキシメチルセルロースナトリウム
を従来の特開２０００−１７８６６２号公報に開示され
ているような０.１５〜１.５４％濃度という低濃度では
なく、５〜１５重量％濃度という高濃度の水溶液の状態
で、製鋼副産物とコークスとのみに混練しブリケットに
製団すれば前記２５Ｋｇｆ／個以上の初期強度が得ら
れ、そのブリケットの含水率が３〜７.５重量％となる
ように自然養生を行えば前記養生後の最終強度が５０Ｋ
ｇｆ／個以上の電気製錬炉用の製鋼副産物中の有価金属
回収用ブリケットとすることができることを究明したの
である。As a result, polyvinyl alcohol and / or sodium carboxymethyl cellulose having a viscosity of 150 mPa · s or less measured by a B type viscometer at 25 ° C. and 1% concentration are disclosed in Japanese Patent Laid-Open No. 2000-178662. 25 kgf / unit or more if the steelmaking by-product and coke are kneaded together into a briquette in an aqueous solution having a high concentration of 5 to 15% by weight instead of a low concentration of 0.15 to 1.54% If natural curing is carried out so that the initial strength of is obtained and the water content of the briquette is 3 to 7.5% by weight, the final strength after the curing is 50K.
It was clarified that a briquette for recovering valuable metals in steelmaking by-products for an electric smelting furnace of gf / piece or more can be used.
【００１４】このように有機質バインダーがポリビニル
アルコール及び／又はカルボキシメチルセルロースナト
リウムであれば、その構成元素の大部分が水素と炭素で
あることからスラグの塩基度への影響がないばかりか、
硫黄も含有しておらず、更に電気製錬炉で溶解・還元さ
れた回収メタル中に残存して回収メタルの組成に影響を
与える元素を含んでおらず、また２５℃，１％濃度のＢ
型粘度計による粘度が１５０ｍＰａ・ｓ以下であれば、
５〜１５重量％濃度の水溶液として製鋼副産物及びコー
クスと混練する際に均一に混練できると共にブリケット
に製団した際に２５Ｋｇｆ／個以上の初期強度が得ら
れ、そのブリケットの含水率が３〜７.５重量％となる
ように自然養生を行えば養生後の最終強度を５０Ｋｇｆ
／個以上にすることが可能なのである。As described above, when the organic binder is polyvinyl alcohol and / or sodium carboxymethyl cellulose, most of the constituent elements are hydrogen and carbon, so that the basicity of the slag is not affected.
It also contains no sulfur, contains no elements that remain in the recovered metal melted / reduced in the electric smelting furnace, and affects the composition of the recovered metal.
If the viscosity of the viscometer is 150 mPa · s or less,
Aqueous solution having a concentration of 5 to 15% by weight can be uniformly kneaded when kneading with steelmaking by-products and coke, and an initial strength of 25 Kgf / piece or more can be obtained when briquetted, and the water content of the briquette is 3 to 7 If natural curing is performed so as to be 0.5% by weight, the final strength after curing is 50 Kgf.
It is possible to make more than one / piece.
【００１５】ここで、有機質バインダーであるポリビニ
ルアルコール及び／又はカルボキシメチルセルロースナ
トリウムの水溶液濃度を５〜１５重量％濃度としたの
は、濃度によってバインダーの粘性が変化する（濃いほ
ど粘性高くなる）が、本発明で使用する有機質バインダ
ーは２５℃，１％濃度のＢ型粘度計による粘度が１５０
ｍＰａ・ｓ以下であるのでこの濃度範囲であれば、配管
等の設備上問題なく有機質バインダー水溶液を液送で
き、且つ主原料である製鋼副産物及びコークスと混練す
る際に均一に有機質バインダーが混合分散されると共
に、必要とする強度が得られる最適な範囲だからであ
る。この濃度下限未満では、製団するブリケットの強度
不足となるので有機質バインダーの添加量を多くする必
要があり、その結果ブリケッ卜中に持ち込まれる水分量
が多くなって電力原単位が悪化したり、水分による炉内
での吹き上げ等の異常操業の原因となる。有機質バイン
ダーの添加量は上記濃度範囲から決まる最適範囲であ
り、上限を超えると製団するブリケットの強度は若干上
がるが、有機質バインダーの製鋼副産物及びコークスと
の混練が不十分で電気精錬炉内での粉化等で電力原単位
を下げると共に、経済性及び設備支障の面で不適である
からである。Here, the concentration of the aqueous solution of polyvinyl alcohol and / or sodium carboxymethyl cellulose as the organic binder is set to 5 to 15% by weight because the viscosity of the binder changes depending on the concentration (the higher the concentration, the higher the viscosity). The organic binder used in the present invention has a viscosity of 150% measured by a B type viscometer at 25 ° C. and a 1% concentration.
Since it is mPa · s or less, if it is within this concentration range, the organic binder aqueous solution can be liquid-fed without any problems in equipment such as piping, and the organic binder is uniformly mixed and dispersed when kneading with the steelmaking by-product and coke which are the main raw materials. This is because it is the optimum range in which the required strength can be obtained. If the concentration is lower than the lower limit, the briquette to be produced will have insufficient strength, so it is necessary to increase the amount of the organic binder added, and as a result, the amount of water brought into the briquette increases and the electricity consumption rate deteriorates. It causes abnormal operation such as blowing up in the furnace due to moisture. The addition amount of the organic binder is the optimum range determined from the above concentration range, and if the upper limit is exceeded, the strength of the briquette to be formed will be slightly increased, but the kneading of the organic binder with the steel-making by-product and coke will be insufficient in the electric refining furnace. This is because it is not suitable in terms of economical efficiency and facility trouble, as well as lowering the electric power consumption rate due to pulverization, etc.
【００１６】そしてこのような有機質バインダーである
ポリビニルアルコールやカルボキシメチルセルロースナ
トリウムとしては、２５℃，１％濃度のＢ型粘度計によ
る粘度が１５０ｍＰａ・ｓ以下のものを単独で使用して
もよいが、２５℃，１％濃度のＢ型粘度計による粘度が
異なる２種類以上のポリビニルアルコール及び／又はカ
ルボキシメチルセルロースナトリウムの混合物を使用す
ることが好ましい。As the organic binder such as polyvinyl alcohol or sodium carboxymethyl cellulose, those having a viscosity of 150 mPa · s or less as measured by a B-type viscometer at 25 ° C. and 1% concentration may be used alone. It is preferable to use a mixture of two or more kinds of polyvinyl alcohol and / or sodium carboxymethyl cellulose having different viscosities measured by a B-type viscometer at 25 ° C. and a concentration of 1%.
【００１７】このような電気製錬炉用の製鋼副産物中の
有価金属回収用ブリケットに使用する主原料である製鋼
副産物とコークスとは、製鋼副産物が固形分換算で電気
炉ダスト：２０〜４０重量％と、転炉ダスト：１０〜２
０重量％と、廃酸スラッジ：３０〜６０重量％と、スケ
ール粉：１〜５重量％とから成ることが好ましく、コー
クスは４〜８重量％であることが好ましい。Steelmaking byproducts and cokes, which are the main raw materials used for the briquette for recovering valuable metals in the steelmaking byproducts for such an electric smelting furnace, are the electric furnace dust in terms of solid content of the steelmaking byproducts: 20 to 40 weight. %, Converter dust: 10-2
It is preferably composed of 0% by weight, waste acid sludge: 30 to 60% by weight, and scale powder: 1 to 5% by weight, and coke is preferably 4 to 8% by weight.
【００１８】[0018]
【実施例】〈実施例１〜５〉固形分換算で電気炉ダス
ト：１９重量％、転炉ダスト：１６重量％、廃酸スラッ
ジ：５６重量％、スケール粉：４重量％から成る製鋼副
産物と、コークス：５重量％とに、日本製紙株式会社製
のカルボキシメチルセルロースナトリウム（商品名：サ
ンローズＦ１０ＭＣ，２５℃，１％濃度のＢ型粘度計に
よる粘度：５０〜１５０ｍＰａ・ｓ）と同じく日本製紙
株式会社製のカルボキシメチルセルロースナトリウム
（商品名：サンローズＡＰＰ−８４，２５℃，１％濃度
のＢ型粘度計による粘度：３〜５ｍＰａ・ｓ）とを混合
し、２５℃のＢ型粘度計による粘度を６００〜９５０Ｐ
ａ・ｓになるように調整した表１に示す濃度の水溶液と
したものを、固形分換算で表１に示す重量％添加して混
練後、ロール式製団機を用いて縦３６ｍｍ×横３６ｍｍ
×高さ２４ｍｍの豆炭状のブリケットに製団し、そのブ
リケットの含水率が表１に示す値となるように自然養生
を行って電気製錬炉用の製鋼副産物中の有価金属回収用
ブリケットを製造した。Examples <Examples 1 to 5> Steelmaking by-product composed of electric furnace dust: 19% by weight, converter dust: 16% by weight, waste acid sludge: 56% by weight, scale powder: 4% by weight in terms of solid content. , Coke: 5% by weight, same as Nippon Paper Manufacturing Co., Ltd. (trade name: Sunrose F10MC, 25 ° C., viscosity of 1% concentration by B-type viscometer: 50 to 150 mPa · s) Carboxymethyl cellulose sodium (trade name: Sunrose APP-84, 25 ° C, 1% concentration B-type viscometer viscosity: 3 to 5 mPa · s) is mixed and mixed with a 25 ° C B-type viscometer. Viscosity 600-950P
An aqueous solution having a concentration shown in Table 1 adjusted to be a · s was added and kneaded by adding the weight% shown in Table 1 in terms of solid content, and then kneaded, and then, using a roll tying machine, length 36 mm × width 36 mm
× A briquette briquettes having a height of 24 mm is briquetted, and naturally cured so that the water content of the briquette becomes the value shown in Table 1 to collect briquette for recovering valuable metals in steel by-products for electric smelting furnace. Manufactured.
【００１９】[0019]
【表１】 [Table 1]
【００２０】〈実施例６〜１０〉実施例１〜５と同じ製
鋼副産物及びコークスに、信越化学工業株式会社製のポ
リビニルアルコール（商品名：ポバールＰＡ−１８Ｇ
Ｐ，２５℃，１％濃度のＢ型粘度計による粘度：１〜２
ｍＰａ・ｓ）を使用して、表２に示す濃度の水溶液とし
たものを、固形分換算で表２に示す重量％添加して混練
後、ロール式製団機を用いて実施例１〜５とほぼ同じ大
きさの豆炭状のブリケットに製団し、そのブリケットの
含水率が表２に示す値となるように自然養生を行って電
気製錬炉用の製鋼副産物中の有価金属回収用ブリケット
を製造した。<Examples 6 to 10> Polyvinyl alcohol (trade name: Poval PA-18G, manufactured by Shin-Etsu Chemical Co., Ltd.) was added to the same steelmaking by-products and cokes as in Examples 1 to 5.
Viscosity by P-type, 25-degree C, 1% concentration B-type viscometer: 1-2
mPa · s) was used to prepare an aqueous solution having a concentration shown in Table 2, and the mixture was kneaded by adding the weight% shown in Table 2 in terms of solid content, and then kneaded. A briquette for recovering valuable metals from steelmaking by-products for electric smelting furnace, which is made into a briquette briquette having almost the same size as that of the briquette, and is naturally cured so that the water content of the briquette becomes the value shown in Table 2. Was manufactured.
【００２１】[0021]
【表２】 [Table 2]
【００２２】〈実施例１１〜１５〉実施例１〜５と同じ
製鋼副産物及びコークスに、日本製紙株式会社製のカル
ボキシメチルセルロースナトリウム（商品名：サンロー
ズＦ１０ＭＣ，２５℃，１％濃度のＢ型粘度計による粘
度：５０〜１５０ｍＰａ・ｓ）と同じく日本製紙株式会
社製のカルボキシメチルセルロースナトリウム（商品
名：サンローズＡＰＰ−８４，２５℃，１％濃度のＢ型
粘度計による粘度：３〜５ｍＰａ・ｓ）とを混合し、２
５℃ののＢ型粘度計による粘度を６００〜９５０Ｐａ・
ｓになるように調整した水溶液に、信越化学工業株式会
社製のポリビニルアルコール（商品名：ポバールＰＡ−
１８ＧＰ，２５℃，１％濃度のＢ型粘度計による粘度：
１〜２ｍＰａ・ｓ）を混合して、表３に示す濃度の水溶
液としたものを、固形分換算で表３に示す重量％添加し
て混練後、ロール式製団機を用いて実施例１〜５とほぼ
同じ大きさの豆炭状のブリケットに製団し、そのブリケ
ットの含水率が表３に示す値となるように自然養生を行
って電気製錬炉用の製鋼副産物中の有価金属回収用ブリ
ケットを製造した。<Examples 11 to 15> The same steelmaking by-products and cokes as in Examples 1 to 5 were added to sodium carboxymethyl cellulose manufactured by Nippon Paper Industries Co., Ltd. (trade name: Sunrose F10MC, 25 ° C., 1% concentration B type viscosity). Viscosity measured by a meter: 50-150 mPa · s) and sodium carboxymethyl cellulose manufactured by Nippon Paper Industries Co., Ltd. (trade name: Sunrose APP-84, 25 ° C., viscosity by B-type viscometer at 1% concentration: 3-5 mPa · s) ) And 2
The viscosity measured by a B-type viscometer at 5 ° C. is 600 to 950 Pa.
In an aqueous solution adjusted to be s, polyvinyl alcohol manufactured by Shin-Etsu Chemical Co., Ltd. (trade name: Poval PA-
Viscosity measured by B-type viscometer at 18GP, 25 ° C, 1% concentration:
1 to 2 mPa · s) to prepare an aqueous solution having a concentration shown in Table 3, and the mixture was kneaded by adding the weight% shown in Table 3 in terms of solid content, and then using a roll-type kneader. ~ 5 briquette charcoal-like briquette is formed, natural curing is carried out so that the water content of the briquette is the value shown in Table 3, recovery of valuable metals in steel by-products for electric smelting furnace Manufactured briquettes for.
【００２３】[0023]
【表３】 [Table 3]
【００２４】〈比較例１〜５〉実施例１〜５と同じ製鋼
副産物及びコークスに、濃度５０重量％のパルプ廃液
を、固形分換算で表４に示す重量％添加して混練後、ロ
ール式製団機を用いて実施例１〜５とほぼ同じ大きさの
ブリケットに製団し、そのブリケットを３５０℃で１時
間加熱乾燥してその含水率が表４に示す値として電気製
錬炉用の製鋼副産物中の有価金属回収用ブリケットを製
造した。Comparative Examples 1 to 5 The same steelmaking by-products and cokes as in Examples 1 to 5 were added with a pulp waste liquid having a concentration of 50% by weight in terms of solid content shown in Table 4 and kneaded. A briquette having a size substantially the same as that of Examples 1 to 5 was used to make a briquette, and the briquette was heated and dried at 350 ° C. for 1 hour to obtain a water content as shown in Table 4 for an electric smelting furnace. The briquette for recovering valuable metals in the steelmaking by-product of
【００２５】[0025]
【表４】 [Table 4]
【００２６】〈比較例６〜１０〉実施例１〜５と同じ製
鋼副産物及びコークスに、実施例１〜５と同じカルボキ
シメチルセルロースナトリウムを、固形分換算で表５に
示す重量％添加して混練後、ロール式製団機を用いて実
施例１〜５とほぼ同じ大きさのブリケットに製団し、そ
のブリケットの含水率が表５に示す値となるように自然
養生を行って電気製錬炉用の製鋼副産物中の有価金属回
収用ブリケットを製造した。<Comparative Examples 6 to 10> To the same steelmaking by-products and cokes as in Examples 1 to 5, the same sodium carboxymethyl cellulose as in Examples 1 to 5 was added by weight% shown in Table 5 in terms of solid content, and after kneading. An electric smelting furnace was prepared by bridging briquettes of approximately the same size as in Examples 1 to 5 using a roll-type bridging machine and performing natural curing so that the water content of the briquettes was the value shown in Table 5. Briquette for the recovery of valuable metals in steelmaking by-products was manufactured.
【００２７】[0027]
【表５】 [Table 5]
【００２８】〈比較例１１〜１５〉実施例６〜１０と同
じ製鋼副産物及びコークスに、実施例６〜１０と同じポ
リビニルアルコールを、固形分換算で表６に示す重量％
添加して混練後、ロール式製団機を用いて実施例６〜１
０とほぼ同じ大きさのブリケットに製団し、そのブリケ
ットの含水率が表６に示す値となるように自然養生を行
って電気製錬炉用の製鋼副産物中の有価金属回収用ブリ
ケットを製造した。<Comparative Examples 11 to 15> The same steelmaking by-products and cokes as those in Examples 6 to 10 and the same polyvinyl alcohol as those in Examples 6 to 10 in terms of solid content in% by weight shown in Table 6.
After adding and kneading, Examples 6 to 1 were carried out using a roll type dough making machine.
A briquette of approximately the same size as 0 is made, and natural curing is performed so that the water content of the briquette becomes the value shown in Table 6 to produce a briquette for recovering valuable metals in steel by-products for an electric smelting furnace. did.
【００２９】[0029]
【表６】 [Table 6]
【００３０】このようにして電気製錬炉用の製鋼副産物
中の有価金属回収用ブリケットを製造するに際し、各実
施例及び各比較例におけるブリケットに製団直後の初期
強度と、養生後の強度と、電気製錬炉で回収したメタル
中の硫黄含有率と、電力原単位指数と、電気製錬炉ダス
ト中の亜鉛濃度とを以下の方法で測定した。その結果を
表７にまとめて示す。In producing the briquette for recovering valuable metals in the steelmaking by-product for the electric smelting furnace in this manner, the briquette in each of the examples and the comparative examples had an initial strength immediately after the bridging and a strength after curing. The sulfur content in the metal recovered in the electric smelting furnace, the power consumption index, and the zinc concentration in the electric smelting furnace dust were measured by the following methods. The results are summarized in Table 7.
【００３１】〈初期強度及び養生後の強度〉ブリケット
をプレスで押し潰して、ブリケットが崩壊を始めるとき
の強度（単位：Ｋｇｆ）を求めた。これらの強度は高い
方が好ましく、ブリケットに製団する際に初期のハンド
リングによる粉化を防止できるためには初期強度は２５
Ｋｇｆ／個以上、電気製錬炉中に投入した際に粉化を防
止できる養生後の最終強度は５０Ｋｇｆ／個以上がそれ
ぞれ必要である。<Initial Strength and Strength After Curing> The briquette was crushed with a press to determine the strength (unit: Kgf) when the briquette started to collapse. It is preferable that these strengths are high, and the initial strength is 25 in order to prevent pulverization due to initial handling when briquetting.
Kgf / piece or more, and the final strength after curing capable of preventing pulverization when charged into an electric smelting furnace is 50 Kgf / piece or more, respectively.
【００３２】〈電気製錬炉で回収したメタル中の硫黄含
有率〉ブリケットを同じ条件で電気製錬炉に投入して回
収した有価金属中の硫黄濃度を求めた。回収した有価金
属中の硫黄濃度が高いと、その回収した有価金属に対し
て更に脱硫処理を行わなければならないため不経済であ
り、有価金属中の硫黄濃度としては、０.１５％以下が
好ましい。<Sulfur Content in Metal Recovered in Electric Smelting Furnace> The briquette was charged into the electric smelting furnace under the same conditions to determine the sulfur concentration in the valuable metal recovered. If the sulfur concentration in the recovered valuable metal is high, it is uneconomical because the recovered valuable metal must be further desulfurized, and the sulfur concentration in the valuable metal is preferably 0.15% or less. .
【００３３】〈電力原単位指数〉電気製錬炉におけるブ
リケットの溶解原単位（ＫＷＨ／メタル・Ｔ）を求め、
標準値を１００とした場合の値で示した。１００以下で
あることが好ましい。<Electricity unit consumption index> The melting unit consumption (KWH / metal · T) of briquette in the electric smelting furnace is calculated,
The value is shown when the standard value is 100. It is preferably 100 or less.
【００３４】〈電気製錬炉ダスト中の亜鉛濃度〉ブリケ
ットを電気製錬炉中に投入した際にブリケットが崩壊し
てダストとなる目安として、ダスト中の亜鉛をアルカリ
で溶融して水溶液とし、これをＩＰＣ分析によって亜鉛
濃度を求めた。これは、電気製錬炉において亜鉛は蒸気
となってダストと一緒に回収されるので、ブリケットの
強度が高ければ微粉のダストの発生量が少ないので、ダ
スト中の亜鉛は濃縮された状態となって亜鉛濃度が上昇
する。電気製錬炉ダスト中の亜鉛濃度は４０％以上が好
ましい。<Zinc Concentration in Dust of Electric Smelting Furnace> As a standard for breaking the briquette into dust when charged into the electric smelting furnace, zinc in the dust is melted with an alkali to form an aqueous solution, The zinc concentration was determined by IPC analysis. This is because zinc in the electric smelting furnace becomes vapor and is collected together with dust, so if the strength of the briquette is high, the amount of fine dust generated is small, so the zinc in the dust is in a concentrated state. Zinc concentration increases. The zinc concentration in the electric smelting furnace dust is preferably 40% or more.
【００３５】[0035]
【表７】 [Table 7]
【００３６】表７の結果から判るように、比較例１〜５
のブリケットは有機質バインダーとしてパルプ廃液を使
用しているため、初期強度が不足していると共に、回収
メタル中の硫黄濃度が高いので、回収メタルに対して別
途脱硫処理が必要となる。また、比較例６〜１０及び１
１〜１５のブリケットは有機質バインダーとして本発明
と同様のカルボキシメチルセルロースナトリウム又はポ
リビニルアルコールを使用しているが、比較例６及び７
のブリケットは有機質バインダーの添加量が不足してい
るので初期強度が２５Ｋｇｆ／個未満と低いばかりか養
生後の強度も低くその結果ダスト中のＺｎ濃度が実施例
に比べて低いことからダスト発生量が多いと推測され
る。比較例８及び９のブリケットは養生後のブリケット
の含水率が高いので電力原単位指数が高い。そして比較
例８のブリケットはカルボキシメチルセルロースナトリ
ウムの水溶液の濃度が高いため、粘度が高くなり、混錬
で有機質バインダーが均一に分散されなかったため強度
が比較例９のブリケットに比べて低かったと考えられ
る。比較例１０のブリケットは有機質バインダーの添加
量が多いから強度は高いが水分の持込量が多く養生後の
ブリケットの含水率が高いので電力原単位指数が高い。
また、有機質バインダーの添加量が多いため経済的でな
い。比較例１１及び１２のブリケットは有機質バインダ
ーの添加量が不足しているので初期強度が２５Ｋｇｆ／
個未満と低いばかりか養生後の強度も低く、且つ養生後
のブリケットの含水率が高いので電力原単位指数が高
い。比較例１３及び１５のブリケットは有機質バインダ
ーの添加量が不足しているので初期強度が２５Ｋｇｆ／
個未満と低いばかりか養生後の強度も低くその結果ダス
ト中のＺｎ濃度が実施例に比べて低いことからダスト発
生量が多いと推測される。特に比較例１３のブリケット
は高めの粘度の有機質バインダーを少量添加したため、
有機質バインダーが均一に分散されなかったので強度が
低いと考えられる。又、比較例１２及び１３のブリケッ
トはその強度が弱いことから、電気精錬炉内で粉化した
ものが棚吊りを起こし、その棚が崩れたときに原料の精
錬反応が進まないまま出銑したため、回収した有価金属
中の硫黄濃度が高いと考えられる。比較例１４のブリケ
ットは有機質バインダーの添加量が多いから強度は高い
が水分の持込量が多く養生後のブリケットの含水率が高
いので電力原単位指数が高い。また、有機質バインダー
の添加量が多いため経済的でない。As can be seen from the results in Table 7, Comparative Examples 1-5
Since the briquette uses waste pulp liquid as an organic binder, the initial strength is insufficient, and the sulfur concentration in the recovered metal is high. Therefore, desulfurization treatment is separately required for the recovered metal. In addition, Comparative Examples 6 to 10 and 1
Briquettes 1 to 15 use sodium carboxymethyl cellulose or polyvinyl alcohol similar to the present invention as the organic binder, but Comparative Examples 6 and 7
In the briquette, the initial strength is less than 25 Kgf / piece because the addition amount of the organic binder is insufficient, and the strength after curing is also low. As a result, the Zn concentration in the dust is lower than that in the example, and therefore the dust generation amount. It is estimated that there are many. The briquettes of Comparative Examples 8 and 9 have a high water content of the briquette after curing, and thus have a high power consumption index. It is considered that the briquette of Comparative Example 8 had a lower viscosity than the briquette of Comparative Example 9 because the viscosity was high due to the high concentration of the sodium carboxymethyl cellulose aqueous solution and the organic binder was not uniformly dispersed in the kneading. The briquette of Comparative Example 10 has a high strength because the amount of the organic binder added is large, but the amount of water carried in is large and the moisture content of the briquette after curing is high, so that the power consumption index is high.
In addition, it is not economical because the amount of the organic binder added is large. The briquettes of Comparative Examples 11 and 12 had an initial strength of 25 Kgf / because the amount of the organic binder added was insufficient.
The power consumption index is high because the strength after curing is low and the water content of briquette after curing is high. The briquettes of Comparative Examples 13 and 15 had an initial strength of 25 Kgf /
It is presumed that a large amount of dust is generated because the Zn concentration in the dust is low as compared with the examples, as well as being as low as less than the number of pieces and the strength after curing is also low. Particularly in the briquette of Comparative Example 13, since a small amount of an organic binder having a high viscosity was added,
It is considered that the strength is low because the organic binder was not uniformly dispersed. In addition, since the briquettes of Comparative Examples 12 and 13 are weak in strength, powdered ones in the electric refining furnace caused hanging of the shelves, and when the shelves collapsed, the refining reaction of the raw material did not proceed and was tapped. , It is considered that the recovered valuable metal has a high sulfur concentration. In the briquette of Comparative Example 14, the strength is high because the amount of the organic binder added is large, but the amount of water carried in is large and the water content of the briquette after curing is high, so that the power consumption index is high. In addition, it is not economical because the amount of the organic binder added is large.
【００３７】このように比較例はいずれも、強度、回収
メタル中の硫黄濃度、電力原単位指数、ダスト中の亜鉛
濃度のすべてを満足することができず、いずれかが不十
分であることにより、経済性が実施例に比べて劣ってい
た。As described above, none of the comparative examples can satisfy all of the strength, the sulfur concentration in the recovered metal, the electric power consumption index, and the zinc concentration in the dust. The economic efficiency was inferior to that of the example.
【００３８】[0038]
【発明の効果】以上に詳述した如く、本発明に係る電気
製錬炉用の製鋼副産物中の有価金属回収用ブリケット
は、その強度が高いので電気製錬炉中に投入した際にダ
スト発生量を低減し、ガス抜け等の炉況悪化現象の発生
がないため、電力原単位の低減、原料棚吊りによる吹上
げ等の異常の抑制等を図ることができ、主原料として電
気炉ダスト，転炉ダスト，廃酸スラッジ，スケール粉の
ような製鋼副産物と還元材としてのコークスとに硫黄を
含有しない特定の有機質バインダーを添加しただけのも
のであり、スラグの塩基度に影響を与えるカルシウムや
珪素を積極的に添加したものではないので、電気製錬炉
の操業を極めて容易にするばかりか、製鋼副産物中の有
価金属を有効に回収できるものである。その結果、製鋼
副産物の廃棄物処理費用の低減及び原料歩留の向上効果
も奏するものである。As described above in detail, since the briquette for recovering valuable metals in the steelmaking by-product for the electric smelting furnace according to the present invention has high strength, dust is generated when it is put into the electric smelting furnace. Since the amount of electricity is reduced and the deterioration of the furnace condition such as outgassing does not occur, it is possible to reduce the electric power consumption rate, suppress abnormalities such as blowing up due to hanging of raw material racks, etc. Steelmaking by-products such as converter dust, waste acid sludge, and scale powder and coke as a reducing agent are simply added with a specific organic binder that does not contain sulfur, and calcium and calcium that affect the basicity of slag are added. Since silicon is not added positively, it not only makes the operation of the electric smelting furnace extremely easy, but also enables effective recovery of valuable metals in the steelmaking by-product. As a result, the waste treatment cost of the steelmaking by-product is reduced and the raw material yield is improved.
【００３９】そして、本発明に係る電気製錬炉用の製鋼
副産物中の有価金属回収用ブリケットの製造方法は、前
記効果を奏する電気製錬炉用の製鋼副産物中の有価金属
回収用ブリケットを、加熱処理を一切行うことなく製造
できる方法であって、ブリケットへの製団時に製団され
たブリケットを崩壊することなく自然養生で初期の目的
を有する強度の高いブリケットを製造することを可能と
する画期的な方法である。The method for producing a valuable metal recovering briquette in a steelmaking by-product for an electric smelting furnace according to the present invention comprises: It is a method that can be produced without performing any heat treatment, and makes it possible to produce a high-strength briquette having an initial purpose of natural curing without collapsing the briquette formed during briquette formation. This is an epoch-making method.
【００４０】このような種々の効果を奏する本発明に係
る電気製錬炉用の製鋼副産物中の有価金属回収用ブリケ
ット及びその製造方法の工業的価値は非常に大きなもの
である。The industrial value of the briquette for recovering valuable metals in the steelmaking by-product for the electric smelting furnace and the method for producing the same according to the present invention, which exhibits various effects as described above, is very great.
Claims (5)
度が１５０ｍＰａ・ｓ以下のポリビニルアルコール及び
／又はカルボキシメチルセルロースナトリウム：０.８
〜１.７重量％と水分：３〜７.５重量％と残部である製
鋼副産物とコークスとが混練されてブリケットを成して
いることを特徴とする電気製錬炉用の製鋼副産物中の有
価金属回収用ブリケット。1. Polyvinyl alcohol and / or sodium carboxymethylcellulose having a viscosity of 150 mPa · s or less measured by a B-type viscometer at 25 ° C. and 1% concentration: 0.8.
In the steelmaking byproduct for an electric smelting furnace, the steelmaking byproduct and coke, which are the balance, are mixed to form 1.7 to 1.7% by weight and water: 3 to 7.5% by weight. Briquette for recovering valuable metals.
ト：２０〜４０重量％、転炉ダスト：１０〜２０重量
％、廃酸スラッジ：３０〜６０重量％、スケール粉：１
〜５重量％から成り、コークスが４〜８重量％である請
求項１に記載の電気製錬炉用の製鋼副産物中の有価金属
回収用ブリケット。2. Steelmaking by-product, in terms of solid content, electric furnace dust: 20-40% by weight, converter dust: 10-20% by weight, waste acid sludge: 30-60% by weight, scale powder: 1
The briquette for recovering valuable metals in the steelmaking by-product for an electric smelting furnace according to claim 1, wherein the briquette comprises 5 to 5% by weight and coke is 4 to 8% by weight.
％濃度のＢ型粘度計による粘度が１５０ｍＰａ・ｓ以下
のポリビニルアルコール及び／又はカルボキシメチルセ
ルロースナトリウムの５〜１５重量％濃度の水溶液を固
形分換算で０.８〜１.７重量％添加して混練後、ブリケ
ットに製団し、該ブリケットの含水率が３〜７.５重量
％となるように自然養生を行うことを特徴とする電気製
錬炉用の製鋼副産物中の有価金属回収用ブリケットの製
造方法。3. Steelmaking by-product and coke, at 25 ℃, 1
% And an aqueous solution of polyvinyl alcohol and / or sodium carboxymethylcellulose having a concentration of 5 to 15% by weight, which has a viscosity of 150 mPa · s or less by a B-type viscometer, is added at 0.8 to 1.7% by weight in terms of solid content and kneaded. After that, the briquette is formed into a briquette, and natural curing is performed so that the water content of the briquette is 3 to 7.5% by weight. Production method.
スト：２０〜４０重量％、転炉ダスト：１０〜２０重量
％、廃酸スラッジ：３０〜６０重量％、スケール粉：１
〜５重量％を、コークスを４〜８重量％を使用する請求
項３に記載の電気製錬炉用の製鋼副産物中の有価金属回
収用ブリケットの製造方法。4. Electric furnace dust: 20 to 40% by weight, converter dust: 10 to 20% by weight, waste acid sludge: 30 to 60% by weight, scale powder: 1 in terms of solid content as a steelmaking by-product.
The method for producing a briquette for recovering valuable metals in a steelmaking by-product for an electric smelting furnace according to claim 3, wherein -5% by weight and 4-8% by weight of coke are used.
に記載の電気製錬炉用の製鋼副産物中の有価金属回収用
ブリケットの製造方法。5. The method according to claim 3, wherein the natural curing is performed for 3 days or more.
The method for producing a briquette for recovering valuable metals in a steel-making by-product for an electric smelting furnace according to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002046549A JP4077212B2 (en) | 2002-02-22 | 2002-02-22 | Briquette for recovering valuable metals in steelmaking by-products for electric smelting furnace and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002046549A JP4077212B2 (en) | 2002-02-22 | 2002-02-22 | Briquette for recovering valuable metals in steelmaking by-products for electric smelting furnace and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003247026A true JP2003247026A (en) | 2003-09-05 |
| JP4077212B2 JP4077212B2 (en) | 2008-04-16 |
Family
ID=28659920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002046549A Expired - Lifetime JP4077212B2 (en) | 2002-02-22 | 2002-02-22 | Briquette for recovering valuable metals in steelmaking by-products for electric smelting furnace and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4077212B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006265617A (en) * | 2005-03-23 | 2006-10-05 | Nisshin Steel Co Ltd | Method of producing scrap wood briquette for refining furnace and scrap wood briquette for refining furnace produced by the method |
| KR100687251B1 (en) * | 2005-05-24 | 2007-02-27 | 주식회사 케이에스티 | Briquette of fine concentrate containing steelmaking slag and method for producing the same |
| KR101053365B1 (en) * | 2003-12-23 | 2011-08-01 | 재단법인 포항산업과학연구원 | Method for manufacturing ferro-chromium alloy using steel by-products |
| EP3124628A1 (en) * | 2015-07-30 | 2017-02-01 | British Steel Limited | Method for the manufacture of agglomerate containing ferrous material |
| JP2019090095A (en) * | 2017-11-16 | 2019-06-13 | 株式会社片山化学工業研究所 | Method for producing iron-making dust agglomerate, and agglomeration assistant |
| JP2020517837A (en) * | 2017-04-18 | 2020-06-18 | バインディング ソリューションズ リミティド | Iron ore pellets |
| CN111593254A (en) * | 2020-06-02 | 2020-08-28 | 山东泰山钢铁集团有限公司 | Method for producing 400-series stainless steel by using stainless steel mixed acid pickling sludge |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101401348B1 (en) | 2011-11-18 | 2014-05-30 | 전북대학교산학협력단 | Polymer gel containing metal extractant, method for manufacturing the same and method for recovering precious metal using the same |
-
2002
- 2002-02-22 JP JP2002046549A patent/JP4077212B2/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101053365B1 (en) * | 2003-12-23 | 2011-08-01 | 재단법인 포항산업과학연구원 | Method for manufacturing ferro-chromium alloy using steel by-products |
| JP2006265617A (en) * | 2005-03-23 | 2006-10-05 | Nisshin Steel Co Ltd | Method of producing scrap wood briquette for refining furnace and scrap wood briquette for refining furnace produced by the method |
| KR100687251B1 (en) * | 2005-05-24 | 2007-02-27 | 주식회사 케이에스티 | Briquette of fine concentrate containing steelmaking slag and method for producing the same |
| EP3124628A1 (en) * | 2015-07-30 | 2017-02-01 | British Steel Limited | Method for the manufacture of agglomerate containing ferrous material |
| JP2020517837A (en) * | 2017-04-18 | 2020-06-18 | バインディング ソリューションズ リミティド | Iron ore pellets |
| JP7406482B2 (en) | 2017-04-18 | 2023-12-27 | バインディング ソリューションズ リミティド | iron ore pellets |
| US11932917B2 (en) | 2017-04-18 | 2024-03-19 | Binding Solutions Ltd | Iron ore pellets |
| JP2019090095A (en) * | 2017-11-16 | 2019-06-13 | 株式会社片山化学工業研究所 | Method for producing iron-making dust agglomerate, and agglomeration assistant |
| JP7002117B2 (en) | 2017-11-16 | 2022-01-20 | 株式会社片山化学工業研究所 | Method for producing iron-making dust agglomerates and agglomeration aids |
| CN111593254A (en) * | 2020-06-02 | 2020-08-28 | 山东泰山钢铁集团有限公司 | Method for producing 400-series stainless steel by using stainless steel mixed acid pickling sludge |
| CN111593254B (en) * | 2020-06-02 | 2021-06-04 | 山东泰山钢铁集团有限公司 | Method for producing 400-series stainless steel by using stainless steel mixed acid pickling sludge |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4077212B2 (en) | 2008-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103468961B (en) | A kind of airtight cupola furnace process Steel Plant are containing zinc, lead powder dirt processing method | |
| CN101353708B (en) | Nickel iron smelting process with nickel oxide ore and stainless steel production wastes as raw materials | |
| CN109468466B (en) | Metallurgical chemical solid waste recycling system and method thereof | |
| CN101892382B (en) | Method for extracting high-content nickel, chromium and iron from stainless steel dust | |
| CN102719575B (en) | Converter slag modifier and manufacture and using method thereof | |
| CN103451346A (en) | Copper smelting slag reduction method | |
| JP2018090486A (en) | Titanium-containing aggregate, method for its manufacture, and use thereof | |
| CN101691621B (en) | Method of producing sponge iron from carbon dedusting ash and iron scales | |
| JP4077212B2 (en) | Briquette for recovering valuable metals in steelmaking by-products for electric smelting furnace and method for producing the same | |
| CN101818266B (en) | Production method for recovering antimony from antimonyoxychloride | |
| CN106082817B (en) | Brick making process for treating solid waste or hazardous waste | |
| CN103160302A (en) | Processing method of metallurgical dust mud containing iron carbon zinc | |
| KR101169927B1 (en) | Method for withdraing tin by dry refining from tin sludge | |
| CN104046772A (en) | Method for making cooled agglomerated pellets by use of converter gas dry-method electrostatic precipitator | |
| KR101185362B1 (en) | A production method of briquette using waste materials of steel making | |
| CN101967530A (en) | Method for reducing iron by smelting reduction in electrometallurgy | |
| CN104496230A (en) | Cement clinker and preparation method thereof | |
| CN101818265A (en) | Method for preparing metallic lithium by using lithium hydroxide | |
| CN101619386A (en) | Iron coke for blast furnaces, preparation method and application thereof | |
| CN110951929B (en) | Method for reducing iron oxide in steel slag and producing high-activity steel slag | |
| CN103320562A (en) | Method for smelting molten iron from dedusting ash | |
| RU2010133425A (en) | METHOD FOR DISPOSAL OF ELECTRICALLY MELTING FURNACES | |
| CN111118283A (en) | Method for granulating zinc leaching residues, zinc leaching residue material and application thereof | |
| CN1221675C (en) | New technology of copper convertor flue dust slag cluster smelting lead and its cluster formale | |
| CN110846497B (en) | Binder for magnesium-containing fluxed pellets and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20050221 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20061228 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20080129 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20080131 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 4077212 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110208 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110208 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120208 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130208 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140208 Year of fee payment: 6 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R360 | Written notification for declining of transfer of rights |
Free format text: JAPANESE INTERMEDIATE CODE: R360 |
|
| R360 | Written notification for declining of transfer of rights |
Free format text: JAPANESE INTERMEDIATE CODE: R360 |
|
| R371 | Transfer withdrawn |
Free format text: JAPANESE INTERMEDIATE CODE: R371 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |