JPS6043444A - Method for recovering valuable metal from special steel dust and sludge - Google Patents
Method for recovering valuable metal from special steel dust and sludgeInfo
- Publication number
- JPS6043444A JPS6043444A JP58151400A JP15140083A JPS6043444A JP S6043444 A JPS6043444 A JP S6043444A JP 58151400 A JP58151400 A JP 58151400A JP 15140083 A JP15140083 A JP 15140083A JP S6043444 A JPS6043444 A JP S6043444A
- Authority
- JP
- Japan
- Prior art keywords
- slag
- sludge
- molten slag
- briquettes
- dust
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 21
- 239000002184 metal Substances 0.000 title claims abstract description 21
- 239000000428 dust Substances 0.000 title claims abstract description 19
- 239000010802 sludge Substances 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims description 19
- 229910000831 Steel Inorganic materials 0.000 title claims description 10
- 239000010959 steel Substances 0.000 title claims description 10
- 239000002893 slag Substances 0.000 claims abstract description 61
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 12
- 239000012320 chlorinating reagent Substances 0.000 claims abstract description 8
- 238000006722 reduction reaction Methods 0.000 claims abstract description 7
- 150000002739 metals Chemical class 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 150000002736 metal compounds Chemical class 0.000 claims description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 239000011780 sodium chloride Substances 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 17
- 238000011084 recovery Methods 0.000 abstract description 9
- 229910052742 iron Inorganic materials 0.000 abstract description 8
- 229910052759 nickel Inorganic materials 0.000 abstract description 7
- 238000001035 drying Methods 0.000 abstract description 4
- 229910045601 alloy Inorganic materials 0.000 abstract description 3
- 239000000956 alloy Substances 0.000 abstract description 3
- 238000005660 chlorination reaction Methods 0.000 abstract description 3
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 abstract 1
- 239000002923 metal particle Substances 0.000 abstract 1
- 239000004484 Briquette Substances 0.000 description 7
- 229910001021 Ferroalloy Inorganic materials 0.000 description 5
- 239000008188 pellet Substances 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 108091006629 SLC13A2 Proteins 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 210000002816 gill Anatomy 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 238000005456 ore beneficiation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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
【発明の詳細な説明】
本発明は反応熱源として各種金属製練炉や溶解炉から排
出される高温の溶滓が持つ顛”熱を用い、ステンレス鋼
等の特殊鋼のダスト、スラッジ類中に含有されている有
価金属、特にＮ１１次いでＦｅをａ縮回収する方法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention uses the heat of high-temperature slag discharged from various metal smelting furnaces and melting furnaces as a reaction heat source to produce dust and sludge of special steel such as stainless steel. The present invention relates to a method for a-condensing and recovering valuable metals contained therein, particularly N11 and Fe.
特殊鋼製造に際して・発生するダスト、スラッジ類は酸
化鉄を主成分とするが、′数パーセントのＮｉを含みな
がら低品位であり、しかもＣｒ、 Ｐｂ、 Ｚｎ。Dust and sludge generated during the manufacture of special steel are mainly composed of iron oxide, but they are of low grade and contain a few percent of Ni, as well as Cr, Pb, and Zn.
Ｃｕ、 Ｃｄ、 Ｓ、 Ｆなどの有害成分も含むｔこめ
に、Ｎｉ原料としての活用も出来ずに産業廃棄物として
多額の費用をかけて処分されている。Because it contains harmful components such as Cu, Cd, S, and F, it cannot be used as a Ni raw material and is disposed of at great expense as industrial waste.
一方製鉄業において発生ずる高炉、転炉、電気炉２合金
鉄用電気炉などの各種炉から排出されろ溶滓ば高温のま
ま排出されておりその莫大な熱エネルギーは未利用のま
ま無駄に放冷されているのが現状である。On the other hand, the slag that is discharged from various furnaces such as blast furnaces, converters, and electric furnaces for ferroalloys produced in the steel industry remains at a high temperature, and a huge amount of thermal energy is wasted unused. The current situation is that it is cold.
そこで本願は上記の未利用熱エネルギーの利用に着目し
、特殊鋼ダスト、スラッジ類をこれらの高温溶滓中に投
入して、そのエネルギーに１秒有用成分主としてＮｉを
メタル再生回収すると４（に、他の成分は完全に滓化せ
しめて無公害化処理することを目的としたものである。Therefore, this application focuses on the use of the above-mentioned unused thermal energy, and when special steel dust and sludge are put into these high-temperature slags and the energy is used for 1 second to regenerate and recover Ni as a useful component, 4 (to The purpose of this treatment is to completely turn the other components into slag and make it non-polluting.
この種の研究としては本願出願人が以前に研究出願しｔ
コ特願昭４８−１１１３０６ （溶滓を利用しｔコ製鋼
ダスト、スラッジからの有価金属回収方法）があり、こ
の方法は還元剤を内装したダスト、スラッジのブリケッ
トまたはベレットを作り、転炉や電気炉の溶滓鍋底にあ
らかじめ入れておいて、その上から高温の溶滓を流入す
る方法であるが、この方法によると製鋼操業の変化に対
応したブリヶ・ソトまたはペレットの装入適正量の調節
が出来ず、時として未反応ダスト、スラッジのブリケッ
トまたはペレ、ソトの残る欠点を有していることが確認
出来ｔご。As for this type of research, the applicant has previously applied for research.
There is a Japanese Patent Application No. 111306/1986 (method for recovering valuable metals from steelmaking dust and sludge using molten slag), which involves making briquettes or pellets of dust and sludge containing a reducing agent, and converting them into converters. This is a method in which the slag is placed in the bottom of the electric furnace pot in advance, and the high-temperature slag is poured from above.This method allows for the appropriate amount of slag, pellets, or pellets to be charged in response to changes in steelmaking operations. It has been confirmed that the process cannot be controlled and sometimes has the disadvantage of residual unreacted dust, sludge briquettes or pellets, and soot.
そこで本願発明方法では上記の欠点を解消し、さらに有
価金属の回収を容易として有害成分の無公害化処理をよ
り完全ならしめようとする方法を提供するものであり、
その要旨とするところは、第１工程：特殊鋼ダスト、ス
ラッジ類と、該ダスト、スラッジ類中の金属化合物と図
心するに必要な量の還元剤と塩化剤とを混合塊成化する
。Therefore, the method of the present invention eliminates the above-mentioned drawbacks, and also provides a method that facilitates the recovery of valuable metals and makes the pollution-free treatment of harmful components more complete.
The gist is as follows: 1st step: Special steel dust and sludge are mixed and agglomerated with a reducing agent and a chlorinating agent in an amount necessary to center the metal compounds in the dust and sludge.
第一２工程；第１工程て得゛られｔコ塊成化物を乾燥予
熱する。1st 2nd step: Dry and preheat the agglomerated product obtained in the 1st step.
第３工程：第２工程で得られｔコ乾燥塊成化物を高温溶
滓と共に溶滓鍋内に装入し、該溶滓の持つ顕熱により塩
化還元反応を生起せしめ、主としてＮＩ。Third step: The dried agglomerated product obtained in the second step is charged into a slag pot together with high-temperature slag, and the sensible heat of the slag causes a chloride-reduction reaction, which mainly produces NI.
Ｆｅの有価金属をメタル化させる。The valuable metal of Fe is metallized.
第４工ｙ：溶滓鍋内の物を冷却凝固し、次いで破砕した
後通常のＭ鉱手段でメタル化したＮｌ。4th step y: The material in the slag pot was cooled and solidified, then crushed and then metalized by ordinary M ore means.
Ｆｅを回収する
上記の各工程より成る溶滓顕熱を利用した１′！ｊ殊鋼
ダスト、スラッジ類からの有価金属回収方法でありこの
際に用いる還元剤としてアルミ粉やフェリシリコンでも
支障はないが通常はコークス粉°や木炭粉等の炭素質還
元剤を用い、又塩化剤としては通常安価なＣうＣ１よや
ＮａＣ１を用いる。1' which utilizes the sensible heat of the slag consisting of each of the above steps to recover Fe! This is a method for recovering valuable metals from special steel dust and sludge, and there is no problem with using aluminum powder or ferri-silicon as the reducing agent, but usually carbonaceous reducing agents such as coke powder or charcoal powder are used, or As the chlorinating agent, usually inexpensive C, C1, or NaC1 is used.
なお第１工程ではダスト、スラ・ソリ類に還゛元剤と塩
化剤を共に添加混練して、ブリケットまたはペレット状
に塊成化ずろが、炭素質還元剤を用いろ場合その添加量
は唱還元に必要な理論量の１〜５倍、塩化剤の添加量は
ＣａＣ１１やＮａＣ１を用いる場合Ｎｉ１ｅ塩化するに
必要な理論量の０．５〜１．５倍とすることが好ましく
、又炭素質還元剤の粒度は約５ｍ／ｍ以下が好ましい。In the first step, a reducing agent and a chlorinating agent are added and kneaded to the dust, slurry, and sled, and the resulting agglomerates into briquettes or pellets.If a carbonaceous reducing agent is used, the amount to be added is not specified. When CaC11 or NaC1 is used, it is preferable that the amount of the chlorinating agent added be 0.5 to 1.5 times the theoretical amount necessary for Ni1e chlorination. Preferably, the particle size of the reducing agent is about 5 m/m or less.
次に第２工程はｆｆ！１工程で得られた塊成化物に含ま
れる水分を乾燥除去する工程で、過剰の水分が存在する
と、ＮｉＣｌユ＋ＨＪＬＯ→ＮｉＯ＋２８Ｃ１又は、Ｆ
ＩＩＩＣＩｔ十Ｈ，０−ＦｅＯ＋２８ＣＩ等で示される
加水分解をおこし、Ｎ１やＦｅの塩化反応が阻害される
ことを防止する為に必要であり、また水分ｊこよる溶滓
顕熱の熱損失を防止する為にも重要である。更に溶滓中
に投入された塊成化物の破裂粉化を防止する上からも効
果を有する。Next, the second step is ff! In the step of drying and removing the water contained in the agglomerated product obtained in the first step, if excess water is present, NiCl + HJLO → NiO + 28C1 or F
It is necessary to prevent the chlorination reaction of N1 and Fe from being inhibited by causing the hydrolysis shown by IIICIt1H,0-FeO+28CI, etc., and also to prevent the heat loss of the sensible heat of the slag due to moisture. It is also important for Furthermore, it is also effective in preventing the agglomerated material introduced into the slag from bursting into powder.
第３工程は高温の溶滓中に第２工程よりの塊成化物を投
入する工程で、溶滓鍋への落下乱流または高圧気体吹き
込みや機械的攪拌による人工乱流によって塊成化物を溶
滓中に投入せしめ顕熱によるＮｉ、 Ｆｅの塩化還元反
応を促進する工程であるが、階、「θ化合物は先ずＮｉ
Ｃ１よ＋ Ｆ ｅ Ｃｌ□となって気体化し、次いで炭
素質還元剤上にメタルに還元されて析出すめために反応
の進行と共にＮｉ、 Ｆ日メタルの成長が見られ後工程
での物理選鉱を容易とずろ特徴がある。しかしながら塊
成化物の投入量は溶滓顕熱に応じた量が大切で、通常溶
滓量の約３０％以下である。The third step is a step in which the agglomerates from the second step are introduced into the hot slag, and the agglomerates are dissolved by turbulence falling into the slag pot or by artificial turbulence caused by high-pressure gas blowing or mechanical stirring. In this process, the chloride-reduction reaction of Ni and Fe is promoted by sensible heat by introducing the slag into the slag.
C1+FeCl□ becomes gasified, and then it is reduced to metal on the carbonaceous reducing agent and precipitated. As the reaction progresses, growth of Ni and F metals is observed, which requires physical beneficiation in the subsequent process. It has the characteristic of being easy. However, it is important that the amount of agglomerate added is in accordance with the sensible heat of the slag, and is usually about 30% or less of the amount of slag.
次に本発明を合金鉄溶滓に応用した場合を第１図を参酌
し乍も詳述する。Next, a case in which the present invention is applied to ferroalloy slag will be described in detail with reference to FIG.
図中（１）は合金鉄用帷気炉、（２）は合金鉄メタル用
の取鍋、（３）は溶滓鍋、（“４） ｌよ溶滓、（５）
は乾燥予熱されたブリケット、（６）はブリケット投入
用フィダー、（７）はブリケット乾燥予熱装置。In the figure, (1) is a hot-air furnace for ferroalloy metals, (2) is a ladle for ferroalloy metals, (3) is a slag ladle, (4) l is slag, (5)
(6) is a feeder for feeding briquettes, (7) is a briquette drying and preheating device.
＋８） ｌｆ製団ｅｌ、 ＋９） １．を処ｍ！完了Ｌ
ｒｊ溶滓、 ＋１０）は選鉱装置を示す。+8) lf production company el, +9) 1. Get rid of it! Completed L
rj slag, +10) indicates ore beneficiation equipment.
合金鉄用電気炉（１）から出湯されたメタルと溶滓はメ
タル用の取鍋（２）内で比重分離されて、溶滓（４）の
みが次の溶滓鍋（３）中に溢流落下して貯留される。一
方ダスト、スラッジ類と炭素質還ル剤、塩化剤とを混合
して、また必要によっては製団用のバインダーを加えて
、製団機（８）でブリヶ・ントを作り、乾燥予熱装置（
７）によって乾燥予熱されｔこブリケット（５） はフ
ィダー（６） に準備する。The metal and molten slag tapped from the electric furnace for ferroalloy (1) are separated by specific gravity in the metal ladle (2), and only the molten slag (4) overflows into the next slag ladle (3). It flows down and is stored. On the other hand, dust and sludge are mixed with a carbonaceous reducing agent and a chlorinating agent, and if necessary, a binder for making a dough is added to make a briquette in a dough making machine (8).
The briquettes (5) are dried and preheated by 7) and prepared in the feeder (6).
しかし溶滓（４）が溶滓鍋（３）に落下する時に乾燥予
熱ブリケット（５）をフィダー（６）から同時に落下せ
しめて溶滓鍋（３）内で良く混合し溶滓（４）の顕熱を
充分にブリケラトに伝達せしめて、ブリケット中Ｎｉや
Ｆｅめ塩化還元反応を促進する。ブリケット内の温度が
約８００℃以上となると、あたかも密閉客器に類似した
ブリケット内で塩化還元反応が起こり主としてメタルＮ
１の生成を見るものであるが、Ｆｅの一部も同様の反応
によってメタル化するので実際に（よＦｅ−唱合金の生
成となる。However, when the slag (4) falls into the slag pot (3), the dry preheated briquettes (5) are simultaneously dropped from the feeder (6) and are mixed well in the slag pot (3). Sensible heat is sufficiently transferred to the briquettes to promote the chloride-reduction reaction of Ni and Fe in the briquettes. When the temperature inside the briquette reaches approximately 800℃ or higher, a chloride-reduction reaction occurs inside the briquette, which is similar to a closed container, and mainly produces metal N.
Although we are looking at the formation of 1, since a part of Fe is also metalized by a similar reaction, it actually results in the formation of an Fe-like alloy.
次いて処理を完了した溶滓（９）は放流または溶滓鍋（
３）内で冷却凝固された後に、選鉱工程（１０）に送っ
て破砕、磁力選鉱、比重選鉱な゛どによってＮｉを主体
とした還元メタル粒を回収する。Next, the processed slag (9) is discharged into a slag pot (
After being cooled and solidified in 3), it is sent to a beneficiation step (10) to recover reduced metal grains mainly composed of Ni by crushing, magnetic beneficiation, specific gravity beneficiation, etc.
以下本発明の試験実施例を示す。Test examples of the present invention will be shown below.
試験実施例
ニル一式電気炉（１７）でフェロクロムスラグを再溶解
して作った約ｊ、ｏ ｏ ｋｇの溶〜を第２図にて示す
ごとく鉄製の溶滓鍋（３）に流入して、次いで溶滓中に
ランスパイプ（１１）を挿入、高圧空気にて溶滓をバブ
リングさせながら、あらかしめステンレス製鋼ダストに
外割りで粉コークス１５重量部と塩化カルシューム・５
重量部を内装して製団し充分に乾燥しｔこブリケット５
０ｋｇを１分間に５ ｋｇの投入速度で溶滓中に挿入し
た後に約３時間放置し転倒凝固せしめて、常温に冷却後
−３ｍ／ｍ以下に粉砕して磁力選鉱を行っｔこ結果は下
記のごとくであった。Test Example Approximately 1,000 kg of molten material made by remelting ferrochrome slag in a complete electric furnace (17) was poured into an iron slag pot (3) as shown in Figure 2. Next, a lance pipe (11) is inserted into the molten slag, and while bubbling the slag with high-pressure air, 15 parts by weight of coke powder and 5 parts of calcium chloride are added to the roughened stainless steel dust.
Put the weight part inside the briquette, make it, dry it thoroughly, and make briquettes 5.
0 kg was inserted into the slag at a rate of 5 kg per minute, left for about 3 hours to solidify by falling over, cooled to room temperature, crushed to below -3 m/m, and subjected to magnetic beneficiation.The results are as follows. It was like this.
※電気炉から出湯時の溶滓温度 １６３０℃※ブリケッ
ト投入完了時の溶滓温度 １４１−０℃上記の結果より
溶滓中に投入されたブリヶ−ｙ）主成分の磁着メタルの
回収率を計算してみると、６、７ｋｇ Ｘ ０．１２４
９
Ｎ１回収率−ｘ ］（１０＝ ８９．９８ （Ｘ）５０
ｋｇ Ｘ Ｏ，０１８６
６，７ｋｇ Ｘ Ｏ，７５５２
Ｆｅ回収率＝ Ｘ１００ ＝４０．０７（χ）５０ｋｇ
Ｘ Ｏ，２５３２
６，７ｋｇ Ｘ ０．０２５０
Ｃｒ回収率＝ Ｘ１００ ＝ ５．５５（Ｅ１５０ｋｇ
Ｘ Ｏ，０６０３
となり、特にＮｉの回収率が高く次いでＦｅと続き、Ｃ
ｒの回収は極めて低く、本発明＋ｉ塩化容易なＮｉの回
収に有利な塩化還元反応の特長を良く表してい。*Temperature of the molten slag at the time of tapping from the electric furnace 1630℃ *Temperature of the slag at the time of completion of charging the briquettes 141-0℃ From the above results, the recovery rate of the magnetic metal, which is the main component of the briquettes thrown into the slag. When I calculated it, it was 6,7kg x 0.124
9 N1 recovery rate - x] (10 = 89.98 (X)50
kg X O,0186 6.7 kg X O,7552 Fe recovery rate =
X O,2532 6.7kg X 0.0250 Cr recovery rate = X100 = 5.55 (E150kg
The recovery rate of Ni is particularly high, followed by Fe, followed by C.
The recovery of r was extremely low, which clearly shows the features of the chloride-reduction reaction that is advantageous for recovery of Ni, which is easily chlorinated according to the present invention.
る。Ru.
以上の試験実施例のごとく、これらの特殊鋼ダスト、ス
ラッジ類に含有されているＮｉは低品位であり、しかも
Ｆｅ、 Ｃｒなどの他成分も共存するためにその活用が
困難であっｔコが、本発明によればＮｉの選択濃縮回収
が可能であり極めて有利である。As shown in the above test examples, the Ni contained in these special steel dusts and sludges is of low grade and also coexists with other components such as Fe and Cr, making it difficult to utilize. According to the present invention, it is possible to selectively concentrate and recover Ni, which is extremely advantageous.
しかも従来無駄にされていｔこ溶滓顕熱を有効に活用す
ると共に、公害問題上深刻化しているダスト、エラ１ジ
類の無公害化処理がＮｉ、 Ｆｅの回収と同時に実施し
得ることは産業」二極めて意義が大きい。In addition, it is possible to effectively utilize the sensible heat of the slag that was previously wasted, and to eliminate pollution from dust and gills, which are becoming increasingly serious pollution problems, at the same time as recovering Ni and Fe. ``Industry'' is extremely significant.
第１図は本願方法の工程説明図、第２図は本発明を開発
した試験実施例の説明図１゜
図中、 （１）二′ＩｒＬ気炉
（２）： メタル用取鍋
（３）：溶滓鍋
（４）：溶滓
（５）：乾燥ブリケット
（６）Ｆ ブリケット投入フィダー
（７）： ブリケット乾燥予熱装置
（８）：製団機
（９）；処理後の溶滓
（１０１：選鉱工程
＋１１）：高圧空気ランスパイプ
特許出願人 日本磁力選鉱株式会社
代理人有吉教哨・Figure 1 is an explanatory diagram of the process of the present method, and Figure 2 is an explanatory diagram of a test example in which the present invention was developed. : Molten slag pot (4): Molten slag (5): Dry briquettes (6) F Briquette input feeder (7): Briquette drying preheating device (8): Molten slag (9); Molten slag after treatment (101: Mineral beneficiation process +11): High-pressure air lance pipe Patent applicant Nippon Magnetic Mineral Concentration Co., Ltd. Agent Ariyoshi Kyoto
Claims (1)
ダスト、スラッジ類からの有価金属回収方法。 第１工程：特殊鋼ダスト、スラッジ類と、該ダスト、ス
ラッジ類中の金属化合物と反応するに必要な量の撞元剤
と塩化剤とを混合塊成化する。 第２１程：第１工程で得られた塊成化物を乾燥予熱する
。 第３工程：第２工程で得られた乾燥塊成化物を高温溶滓
と共に溶滓鍋内に装入し、該溶滓の持つＮ熱により塩化
還元反応を生起せしめ、主としてＮｉ、 Ｆａの有価金
属をメタル化させる。 第４工程：溶滓鍋内の物を冷却凝固し、次いで破砕しｔ
コ後通常の選鉱手段でメタル化したＮｌ。 Ｆｅを回収する。 ２、第１工程で用いる還元剤が炭素質還元剤であること
を特徴とする特許請求の範囲第１項記載の方法。 ３、第１工程で用いる塩化剤が、ＣａＣ１ｚ あるいは
ＮａＣ１であることを特徴とする特許請求の範囲第１項
若しくは第２項記載の方法６ ４、第３工程で溶滓鍋内に、乾燥塊成化物と高温溶滓と
を装入するに際しそれらを同時に装入することを特徴と
する特許請求の範囲第１項〜第３項のいずれかに記載の
方法。[Claims]: A method for recovering valuable metals from RV special steel dust and sludge using the sensible heat of slag, which comprises the following steps. First step: Special steel dust and sludge are mixed and agglomerated with an amount of a base agent and a chlorinating agent necessary to react with the metal compounds in the dust and sludge. Step 21: Dry and preheat the agglomerated product obtained in the first step. 3rd step: The dried agglomerated product obtained in the 2nd step is charged into a slag pot together with high-temperature slag, and a chloride-reduction reaction is caused by the N heat of the slag, which mainly removes the valuables of Ni and Fa. Metalizes metal. Fourth step: The material in the slag pot is cooled and solidified, then crushed.
After that, Nl was converted into metal using normal beneficiation methods. Collect Fe. 2. The method according to claim 1, wherein the reducing agent used in the first step is a carbonaceous reducing agent. 3. The method according to claim 1 or 2, characterized in that the chlorinating agent used in the first step is CaClz or NaCl. 4. In the third step, dry lumps are 4. The method according to claim 1, wherein the compound and the high-temperature slag are charged at the same time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58151400A JPS6043444A (en) | 1983-08-18 | 1983-08-18 | Method for recovering valuable metal from special steel dust and sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58151400A JPS6043444A (en) | 1983-08-18 | 1983-08-18 | Method for recovering valuable metal from special steel dust and sludge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6043444A true JPS6043444A (en) | 1985-03-08 |
| JPS6337173B2 JPS6337173B2 (en) | 1988-07-25 |
Family
ID=15517758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58151400A Granted JPS6043444A (en) | 1983-08-18 | 1983-08-18 | Method for recovering valuable metal from special steel dust and sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6043444A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0665868A (en) * | 1992-08-19 | 1994-03-08 | Toyobo Co Ltd | Dyed material of interknitted fabric |
| US6353049B1 (en) | 1997-02-13 | 2002-03-05 | Asahi Kasei Kabushiki Kaisha | Elastic polyurethane fiber and process for producing the same |
| US6406788B1 (en) | 1998-08-10 | 2002-06-18 | Asahi Kasei Kabushiki Kaisha | Elastic polyurethane fiber |
| KR20140039308A (en) | 2011-06-23 | 2014-04-01 | 도레이 오페론텍스 가부시키가이샤 | Polyurethane yarn, as well as fabric and swimwear using same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02122667U (en) * | 1989-03-20 | 1990-10-08 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5169417A (en) * | 1974-12-12 | 1976-06-16 | Kobe Steel Ltd | Tetsuganjudasutono shorihoho |
| JPS53122604A (en) * | 1977-03-31 | 1978-10-26 | Nippon Jiriyoku Senkou Kk | Treatment of melted slag |
-
1983
- 1983-08-18 JP JP58151400A patent/JPS6043444A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5169417A (en) * | 1974-12-12 | 1976-06-16 | Kobe Steel Ltd | Tetsuganjudasutono shorihoho |
| JPS53122604A (en) * | 1977-03-31 | 1978-10-26 | Nippon Jiriyoku Senkou Kk | Treatment of melted slag |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0665868A (en) * | 1992-08-19 | 1994-03-08 | Toyobo Co Ltd | Dyed material of interknitted fabric |
| US6353049B1 (en) | 1997-02-13 | 2002-03-05 | Asahi Kasei Kabushiki Kaisha | Elastic polyurethane fiber and process for producing the same |
| US6406788B1 (en) | 1998-08-10 | 2002-06-18 | Asahi Kasei Kabushiki Kaisha | Elastic polyurethane fiber |
| KR20140039308A (en) | 2011-06-23 | 2014-04-01 | 도레이 오페론텍스 가부시키가이샤 | Polyurethane yarn, as well as fabric and swimwear using same |
| US10882973B2 (en) | 2011-06-23 | 2021-01-05 | TorayOpelontexCo., Ltd. | Polyurethane yarn, as well as fabric and swimwear using same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6337173B2 (en) | 1988-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5336472B2 (en) | Recycling method for high zinc and sulfate content residues | |
| CN108676942A (en) | The materials such as a kind of iron content and/or zinc lead bronze tin cooperate with processing recovery method with molten steel slag | |
| AU2015384741B2 (en) | Method for smelting saprolite ore | |
| CN107109529A (en) | The smelting process of nickel oxide ore deposit | |
| CN106795585A (en) | The smelting process of nickel oxide ore deposit | |
| CN105087864A (en) | Method for directly producing titanium carbide from vanadium titano-magnetite | |
| KR100560236B1 (en) | Method of producing stainless steel by re-using waste material of stainless steel producing process | |
| US5582631A (en) | Method for the production of a feedstock containing usable iron constituents from industrial waste streams | |
| JP3516854B2 (en) | Steelmaking furnace dust treatment method and dust pellets | |
| JPS6043444A (en) | Method for recovering valuable metal from special steel dust and sludge | |
| CN105714120A (en) | Comprehensive utilization method of low-quality ferromanganese ore slag and steel iron industrial waste | |
| US4434001A (en) | Method for manufacturing metal from fine-grain metal-oxide material | |
| JP3845893B2 (en) | Metal iron manufacturing method | |
| JPH01228586A (en) | Treatment of ni-cd battery waste | |
| US2674531A (en) | Iron recovery | |
| JPH0375615B2 (en) | ||
| JPS6318650B2 (en) | ||
| JPS60159129A (en) | Method for recovering valuable metal from special steel dust, sludge or the like | |
| JPH10158718A (en) | Dust recycling method in electric furnace | |
| JPH0128820B2 (en) | ||
| JPS60159133A (en) | Method for recovering valuable metal from special steel dust, sludge or the like | |
| JP2004076152A (en) | Method for producing stainless steel reusing waste material in stainless steel producing process | |
| CN100494423C (en) | Method for recovery of valuable metals from waste containing V, Mo and Ni | |
| JP2000119722A (en) | Method for producing reduced iron pellets | |
| JPH0237411B2 (en) |