JPS6028897B2 - How to treat electric furnace dust - Google Patents
How to treat electric furnace dustInfo
- Publication number
- JPS6028897B2 JPS6028897B2 JP56072533A JP7253381A JPS6028897B2 JP S6028897 B2 JPS6028897 B2 JP S6028897B2 JP 56072533 A JP56072533 A JP 56072533A JP 7253381 A JP7253381 A JP 7253381A JP S6028897 B2 JPS6028897 B2 JP S6028897B2
- Authority
- JP
- Japan
- Prior art keywords
- electric furnace
- slag
- dust
- furnace dust
- slate
- 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.)
- Expired
Links
- 239000000428 dust Substances 0.000 title claims description 39
- 239000002893 slag Substances 0.000 claims description 42
- 238000000034 method Methods 0.000 claims description 21
- 229910052725 zinc Inorganic materials 0.000 claims description 14
- 239000011701 zinc Substances 0.000 claims description 14
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 12
- 239000010454 slate Substances 0.000 claims description 12
- 230000005587 bubbling Effects 0.000 claims description 11
- 239000008188 pellet Substances 0.000 claims description 10
- 239000003638 chemical reducing agent Substances 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 6
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 241000718541 Tetragastris balsamifera Species 0.000 claims description 2
- 238000009877 rendering Methods 0.000 claims 1
- 239000002689 soil Substances 0.000 claims 1
- 239000011133 lead Substances 0.000 description 17
- 238000011282 treatment Methods 0.000 description 9
- 238000010828 elution Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 238000007664 blowing Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 101100298225 Caenorhabditis elegans pot-2 gene Proteins 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 241000124033 Salix Species 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052745 lead Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 235000018185 Betula X alpestris Nutrition 0.000 description 1
- 235000018212 Betula X uliginosa Nutrition 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009628 steelmaking Methods 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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Furnace Details (AREA)
Description
【発明の詳細な説明】
本発明は、電気炉ダストの処理方法に関し、更に詳細に
は、電気炉製鋼に於て発生する有害重金属を含む電気炉
ダストを溶融状態にあるスラグの顕熱を利用して一部を
樺化回収し有用資源として再利用すると共に残留分をス
ラグ中に固定化処理する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for treating electric furnace dust, and more particularly, the present invention relates to a method for treating electric furnace dust, and more specifically, a method for treating electric furnace dust containing harmful heavy metals generated during electric furnace steelmaking by utilizing the sensible heat of molten slag. The present invention relates to a method in which a portion of the birch is recovered and reused as a useful resource, and the remaining portion is fixed in slag.
電気炉ダストは鉄、亜鉛、鉛等の有用な金属酸化物を含
有する産業廃棄物であるが、その中に多量の亜鉛を含有
するために高炉原料へ再利用できず、かつ有害金属を含
有するために、これらの溶出抑制処理を行なって、法令
に適合しなければ埋立、投棄処分も行なうことはできな
い。Electric furnace dust is an industrial waste that contains useful metal oxides such as iron, zinc, and lead, but because it contains a large amount of zinc, it cannot be reused as a raw material for blast furnaces, and it also contains harmful metals. Therefore, unless these elution control treatments are carried out to comply with laws and regulations, the materials cannot be disposed of in landfills or dumped.
本発明者等は、かかる問題を解決すべ〈鋭意研究せる結
果、多量の亜鉛等の重金属を含む電気炉ダストを溶融状
態にあるスラグの頭熱を有効利用して一部を麓化回収し
再利用すると共に残留分をスラグ中に固定化処理を行な
う電気炉ダストの処理方法の発明を完成したものである
。The inventors of the present invention have found a way to solve this problem.As a result of intensive research, the head heat of the molten slag is effectively utilized to collect and recycle a portion of the electric furnace dust, which contains a large amount of heavy metals such as zinc. This invention has completed the invention of a method for treating electric furnace dust, in which the residue is fixed in slag.
即ち、本発明の要旨は、溶融スラグに還元剤を内装した
電気炉ダストベレットと、高炉スラグ、赤泥、カラミ、
マサ士及び粘板岩の中の一種以上とをバブリングガスと
共に吹き込み揮化する亜鉛、鉛を主体とする金属酸化物
を回収すると共に、電気炉ダスト中に含まれる有害物を
無害化することを特徴とする電気炉ダストの処理方法に
存するものであり、以下に本発明の方法について詳述す
る。That is, the gist of the present invention is to provide an electric furnace dust pellet containing a reducing agent in molten slag, blast furnace slag, red mud, karami,
It is characterized by recovering metal oxides mainly consisting of zinc and lead that are volatilized by blowing one or more types of slate together with bubbling gas, as well as detoxifying harmful substances contained in electric furnace dust. The method of the present invention will be described in detail below.
本発明は、電気炉ダストを処理する方法として溶融スラ
グの有する顕熱を有効利用し、新たに加えることなく、
添加ダストを溶融反応させる方法として、のる鍋に受け
た溶融スラグに還元剤を内装した電気炉ダストベレット
と、高炉スラグ、赤泥、カラミ、粘板岩及びマサ士の一
種以上とをバブリングガスと共に吹き込み、溶融スラグ
の対流又はバブリングを行なわせ薄化亜鉛、鉛等を集塵
機で回収し、粗亜鉛とする。The present invention effectively utilizes the sensible heat of molten slag as a method for treating electric furnace dust, without adding any additional heat.
As a method of melting and reacting the added dust, an electric furnace dust pellet containing a reducing agent and one or more types of blast furnace slag, red mud, karami, slate, and masashi are blown into the molten slag received in a ladle with bubbling gas. Then, the molten slag is subjected to convection or bubbling, and the diluted zinc, lead, etc. are collected by a dust collector and made into crude zinc.
反応が終了した溶融スラグは放流又はのる鍋内で硬化さ
せ、破砕、磁選後路盤材等に有効利用する。ただ、添加
する電気炉ダストに鉛の多い場合があり、該電気炉ダス
トのみを添加して処理するとスラグより鉛イオンを約０
．１血〜０．沙皿程度熔出することもある。After the reaction, the molten slag is discharged or hardened in a ladle, and after being crushed and magnetically sorted, it is effectively used for roadbed materials, etc. However, there are cases where the electric furnace dust to be added contains a lot of lead, and if only the electric furnace dust is added to the treatment, lead ions are reduced to about 0% compared to slag.
．． 1 blood ~ 0. Sometimes it melts to the size of a sand plate.
そこで赤泥、カラミ、マサ士、大占板岩、高炉スラグの
一種以上を添加し鉛イオンの溶出を防止する。一方スラ
グ中にはＦ・Ｃａ○（遊離石灰）、ッ−Ｘａ○・Ｓｉ０
２，Ｆ・Ｍｇ○（遊離マグネシウム）等を含有している
ので崩壊性を有する。Therefore, one or more of red mud, karami, masashi, large sheet rock, and blast furnace slag are added to prevent the elution of lead ions. On the other hand, the slag contains F・Ca○ (free lime), -Xa○・Si0
2. It has disintegrability because it contains F・Mg○ (free magnesium), etc.
この崩壊性を防止するためには電気炉ダストのみ添加す
る場合は多量に使用しなければならず、その結果スラグ
より鉛イオンの溶出の危険性があるため、赤泥、カラミ
、マサ士、粘板岩、高炉スラグ等を配合、組み合せて処
理するものである。なお本願方法に於いて顕熱源として
電気炉スラグを利用する場合には、発生するダストの量
に比して発生する溶融電気炉スラグの量が（頭熱を考慮
して）不足するのでダストの一部はリターンさせて再び
電気炉へ装入する方式を探るのが実操業上は効率的であ
る、転炉や高炉にあっては発生する溶融スラグ量が多大
であるのでこの様な配慮をする必要がないのはいうまで
もない。In order to prevent this disintegration, if only electric furnace dust is added, it must be used in large quantities, and as a result, there is a risk of lead ions being leached from the slag. , blast furnace slag, etc. are blended and combined for treatment. In addition, when electric furnace slag is used as a sensible heat source in the present method, the amount of molten electric furnace slag generated is insufficient compared to the amount of dust generated (taking head heat into consideration). In actual operation, it is efficient to explore a method of returning some of the slag and charging it into the electric furnace again.In converter furnaces and blast furnaces, a large amount of molten slag is generated, so such considerations are necessary. Needless to say, there is no need to do so.
以下に本発明の実施例について説明する。Examples of the present invention will be described below.
まず第１表は、本発明に使用した使用原料の化学分析値
を示し、第２表は第１表の使用原料について環境庁告示
方法による溶出試験を行った結果を示すものである。First, Table 1 shows the chemical analysis values of the raw materials used in the present invention, and Table 2 shows the results of an elution test performed on the raw materials in Table 1 according to the method notified by the Environment Agency.
第１表
第２表
上記した原料を１０６０〜１１０００の恒温乾燥機で２
４時間以上乾燥後、スラグ、赤泥、マサ士、粘板岩、カ
ラミ、高炉スラグはサンプルグラインダーで４肌以下に
粗砕、スラグのみ磁選し、０．３肋以下に粉砕してゼー
ゲル錐を作り、溶倒温度を測定した。Table 1 Table 2 The above raw materials were dried in a constant temperature dryer of 1060~11000.
After drying for more than 4 hours, the slag, red mud, masashi, slate, karami, and blast furnace slag are roughly crushed into 4 grains or less using a sample grinder, and only the slag is magnetically separated and crushed to 0.3 grains or less to make a Segel cone. The melting temperature was measured.
又、４肌以下のスラグの磁選尾鉱を電熱マグネシアルツ
ボに入れ、１５５０００に保持したシリコニット電気炉
で再溶融させ、コークスを１の重量％〜１５重量％内装
した電気炉ダストベレツト（約２側Ｊ〜３側め）とし、
このべレツトと赤泥、マサ士、粘板岩、カラミ、高炉ス
ラグの４肋以下粗砕物の一種以上を窒素ガス又は空気と
一緒にランスパィプ状物（磁製管）を通して１分間で吹
き込み（合計２００の、更に窒素ガス又は空気をあと吹
きとして１分間（約４．３そ／分）吹き込んでバブリン
グを行ない１５２０ｏｏ〜１５１０つ０で１分間保持後
、電源スィッチを切って約１２００００で炉外に出し空
冷した。In addition, the magnetic tailings with slag of 4 skins or less was placed in an electrothermal magnesia crucible and remelted in a siliconite electric furnace maintained at 155,000 ℃. ~3rd side) and
This beret and one or more crushed pieces of red mud, masashi, slate, karami, and blast furnace slag of 4 or less ribs are blown into the pipe together with nitrogen gas or air through a lance pipe (porcelain tube) in 1 minute (total of 200 Then, bubbling is performed by blowing nitrogen gas or air for 1 minute (approximately 4.3 so/min) afterward, and after holding the temperature at 1520 to 1510 for 1 minute, turn off the power switch and take it out of the furnace at approximately 120,000 to cool in air. did.
このスラグにつき溶出試験（環境庁告示方法）Ｘ線回折
による主含有鉱物、崩壊率の測定（ＡＳＴＭ規格のオー
トクレープ処理法で５側〜１０腿の粒度につき行ない５
柳以下を崩壊物とした。This slag was tested for elution (methods notified by the Environment Agency), and measurement of the main mineral content and disintegration rate by X-ray diffraction (conducted on particle sizes of 5 to 10 sides using the autoclave treatment method in accordance with ASTM standards).
The willow and below were considered to be decomposed objects.
）等を行なった。第３表は、以上の実験の内の溶倒温度
についての測定結果を示すものである。), etc. Table 3 shows the measurement results regarding the melting temperature in the above experiments.
次に代表的な配合組成のものについて下記の如き各測定
を行なった。Next, the following measurements were performed on typical formulations.
ここで該代表的配合組成物についての配合割合を下記第
４表に示す。Here, the blending ratios of the representative blended compositions are shown in Table 4 below.
以下、溶出試験結果を第５表に、Ｘ線回折による主含有
鉱物の生成状況結果を第６表に、試製スラグの化学分析
値を第７表に、更に試製スラグ中の残存Ｚｎ，Ｐｂを第
８表にそれぞれ示す。Below, Table 5 shows the elution test results, Table 6 shows the results of the formation status of the main minerals contained by X-ray diffraction, Table 7 shows the chemical analysis values of the trial slag, and the remaining Zn and Pb in the trial slag are shown below. Each is shown in Table 8.
第３表※ｉ Ｐｂ ４．１努のダスト
※２ Ｐｂ ２．５劣のダスト
第４表
※Ｉ Ｐｂ ４．１略のダスト
※３ 赤泥、粘板岩、マサエ、ヵラミ、高炉スラク等の
一種若しくは二才量以上の略称第５表第６表
第７表
第８表
又、電気炉ダストに還元剤を内装せず、電気炉ダストベ
レット、還元剤（コークス）と赤泥、マサ士、粘板岩等
を第１図に示すホッパー１Ｗこ入れバブリングガスと共
に吹き込んで処理したが、コークスを内装したべレット
法が良好であり、赤泥、マサ士、粘板岩等をダストベレ
ットと同時に投入しても、敷達の代用若しくは排律時に
同時に投入しても効果はほとんど変らなかった。Table 3 *i Pb 4.1 dust *2 Pb 2.5 inferior dust Table 4 *I Pb 4.1 dust *3 A type of red mud, slate, masae, karami, blast furnace slurk, etc. Abbreviations for people with more than 2 years of experience Table 5 Table 6 Table 7 Table 8 Also, electric furnace dust without a reducing agent, electric furnace dust pellet, reducing agent (coke) and red mud, masashi, slate, etc. was treated by blowing it into the 1W hopper shown in Fig. 1 together with bubbling gas, but the pellet method with coke inside was found to be effective, and even when red mud, masashi, slate, etc. were introduced at the same time as the dust pellet, no problems were observed. There was almost no difference in the effect even if it was used as a substitute for or used at the same time as exclusion.
次に本発明の電気炉ダストの処理方法の実施例について
下記に説明する。Next, an example of the method for treating electric furnace dust of the present invention will be described below.
図面に示す如く、溶融スラグ１を入れたのる鍋２（受達
後約１０分、約４０００ｋ９）をダスト処理室３（麓化
ダストが飛散しないように三方を鉄板溶接し他の一方は
のる鍋２が入ると下部に若干冷却空気導入のために空間
を有したトビラを閉じ）に入れコンブレスドェアー（圧
縮空気）をバルブ４を開いてランス５に通しながら、ラ
ンス５を溶融スラグー内に挿入し、バブリングを始めバ
ルブ６を開いて上記圧縮空気と一緒にダストに粉コーク
ス１の重量％を内装した約３側ぐ〜４柳中のべレットと
高炉スラグ、粘板岩、カラミを同量配合し（ダストベレ
ット８００ｋ９、高炉スラグ、粘板岩、カラミを各々４
０ｋ９）ホッパー７に入れたものを約５分間で吹き込み
バルブ６を閉じて、圧縮空気のみを通して後吹きとして
バブリングを行ない揮化物がほとんどなくなった（ダス
トベレット等を装入中止後、約５分）時点でランス５を
溶融スラグーから引きあげバルブ４を閉じた。As shown in the drawing, the pot 2 containing the molten slag 1 (approximately 10 minutes after receipt, approximately 4,000 k9) is placed in the dust treatment chamber 3 (three sides are welded to iron plates to prevent the slag dust from scattering, and the other side is made of steel). When the pot 2 is inserted, the lid which has a small space at the bottom for introducing cooling air is closed), and the lance 5 is placed in the molten slag while opening the valve 4 and passing the compressed air through the lance 5. and start bubbling, open valve 6, and add about 3 to 4 willow pellets, blast furnace slag, slate, and karami in equal amounts to the dust containing 1% by weight of coke powder together with the compressed air. Blend (dust pellet 800k9, blast furnace slag, slate, karami 4 each)
0k9) The material put in the hopper 7 was blown in for about 5 minutes, the valve 6 was closed, and only compressed air was passed through to perform bubbling after blowing, and the volatile matter was almost completely gone (about 5 minutes after stopping the charging of dust pellets, etc.) At that point, lance 5 was pulled out of the molten slag and valve 4 was closed.
バブリング中に発生するＺｎ，Ｐｂ酸化物主体の輝化ダ
ストは集塵機８で回収した。Brightening dust mainly composed of Zn and Pb oxides generated during bubbling was collected by a dust collector 8.
このスラグを冷却後、破砕、磁選して溶出、路盤村試験
等を行なった。この実施例に於ける溶融スラグ、ダスト
及びダスト処理後の化学分析値を第９表に、熔出試験結
果を第１度表もこ、揮化回収物の化学分析値を第１１表
に更に路盤材試験結果を第１２歳こそれそれ示す。After cooling this slag, it was crushed, magnetically separated, eluted, and subjected to roadbed village tests. The molten slag, dust, and chemical analysis values after dust treatment in this example are shown in Table 9, the results of the elution test are also shown in Table 1, and the chemical analysis values of the volatilized recovered material are shown in Table 11. The 12th year old shows the results of the material test.
第９表第 １０ 表
第 １１ 表
第 １２ 表
叙上せる如く、本発明の電気炉ダストの処理方法は、溶
融スラグに還元剤を内装した電気炉ダストベレットと共
に高炉スラグ、赤泥、カラミ、マサ±及び粘板岩の一種
以上をバブリングと共に吹き込む新規な方法であって以
下に記載するような優れた効果を奏するものである。As shown in Table 9, Table 10, Table 11, Table 12, the electric furnace dust treatment method of the present invention uses electric furnace dust pellets containing a reducing agent in molten slag, as well as blast furnace slag, red mud, karami, and masa. This is a novel method of injecting one or more types of ± and slate together with bubbling, and it produces excellent effects as described below.
■ 鉛、亜鉛の漣化率が還元剤無しで処理した場合に比
較して鉛の場合は２．３倍、亜鉛の場合は１．４倍と非
常に高くなる。■ Compared to the treatment without a reducing agent, the rate of lead and zinc formation is extremely high, 2.3 times as high for lead and 1.4 times as high for zinc.
■ 本発明の方法に於ては、鉛及び亜鉛の残存率はそれ
ぞれ約２鶴重量％と４の重量％であるのに対して還元剤
無しの方法に於いては鉛及び亜鉛の残存率はそれぞれ約
１の重量％と２立重量％であつた■ 又、バブリングガ
スの吹き込み及び高炉スラグ、赤泥、カラミ、マサ士及
び粘板岩の添加は反応を迅速かつ十分に進行せしめ、処
理後物は無害化されると共にスラグは非崩壊性のものと
なるので路盤村等に有効に利用できる。■ In the method of the present invention, the residual rates of lead and zinc are approximately 2% by weight and 4% by weight, respectively, whereas in the method without reducing agent, the residual rates of lead and zinc are approximately 2% by weight and 4% by weight, respectively. In addition, the injection of bubbling gas and the addition of blast furnace slag, red mud, karami, masashi and slate allowed the reaction to proceed quickly and sufficiently, and the resulting product was Since the slag is rendered harmless and non-degradable, it can be effectively used for roadbed villages, etc.
■ ■に示したように鉛、亜鉛等を高効率にて回収でき
るため資源の再利用としても極めて有効な処理方法であ
る。■ As shown in (■), lead, zinc, etc. can be recovered with high efficiency, so it is an extremely effective treatment method for resource reuse.
図面は、本発明の電気炉ダストの処理に使用する装置の
一実施例を示す系統図。The drawing is a system diagram showing one embodiment of an apparatus used for treating electric furnace dust according to the present invention.
Claims (1)
ツトと、高炉スラグ、赤泥、カラミ、マサ土及び粘板岩
の中の一種以上とを、バブリングガスと共に吹き込み、
揮化する亜鉛、鉛を主体とする金属酸化物を回収すると
共に、電気炉ダスト中に含まれる有害物を無害化するこ
とを特徴とする電気炉ダストの処理方法。1 Blow electric furnace dust pellets containing a reducing agent into the molten slag, and one or more of blast furnace slag, red mud, karami, masa soil, and slate together with bubbling gas,
A method for treating electric furnace dust, characterized by recovering volatilized metal oxides mainly consisting of zinc and lead, and rendering harmful substances contained in the electric furnace dust harmless.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56072533A JPS6028897B2 (en) | 1981-05-12 | 1981-05-12 | How to treat electric furnace dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56072533A JPS6028897B2 (en) | 1981-05-12 | 1981-05-12 | How to treat electric furnace dust |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57185937A JPS57185937A (en) | 1982-11-16 |
| JPS6028897B2 true JPS6028897B2 (en) | 1985-07-08 |
Family
ID=13492074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56072533A Expired JPS6028897B2 (en) | 1981-05-12 | 1981-05-12 | How to treat electric furnace dust |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6028897B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0672397U (en) * | 1993-03-31 | 1994-10-11 | 光利 戸沢 | Shredder and skewer |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60110387A (en) * | 1983-11-21 | 1985-06-15 | Nippon Jiryoku Senko Kk | Dust treating apparatus |
-
1981
- 1981-05-12 JP JP56072533A patent/JPS6028897B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0672397U (en) * | 1993-03-31 | 1994-10-11 | 光利 戸沢 | Shredder and skewer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57185937A (en) | 1982-11-16 |
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