JPS63259035A - Treatment of material containing by-product zn - Google Patents
Treatment of material containing by-product znInfo
- Publication number
- JPS63259035A JPS63259035A JP62093562A JP9356287A JPS63259035A JP S63259035 A JPS63259035 A JP S63259035A JP 62093562 A JP62093562 A JP 62093562A JP 9356287 A JP9356287 A JP 9356287A JP S63259035 A JPS63259035 A JP S63259035A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- zinc
- volatilization
- product
- gas
- 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.)
- Pending
Links
- 239000006227 byproduct Substances 0.000 title claims abstract description 11
- 239000000463 material Substances 0.000 title abstract description 10
- 239000011701 zinc Substances 0.000 claims abstract description 42
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 15
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000007747 plating Methods 0.000 claims abstract description 9
- 239000008188 pellet Substances 0.000 claims abstract description 7
- 239000011787 zinc oxide Substances 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 14
- 238000003860 storage Methods 0.000 abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 238000009833 condensation Methods 0.000 abstract description 4
- 230000005494 condensation Effects 0.000 abstract description 4
- 239000002826 coolant Substances 0.000 abstract description 3
- 239000000843 powder Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 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】
〔産業上の利用分野〕
本発明は、製鉄所で副生ずるＺｎ含有物、たとえば電気
炉ダスト、ダストペレットダスト、キルンダスト、メッ
キドロス粉等のＺｎ含有物の処理方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for treating Zn-containing materials produced as by-products in steel mills, such as electric furnace dust, dust pellet dust, kiln dust, and plating dross powder.
この種の副生Ｚｎ含有物中には、Ｚｎとしてたとえば電
気炉ダストの場合、約２５％、ダストペレットダストの
場合約５０％とからなりＺｎを含有しているにもかかわ
らず、有効なＺｎ回収処理法が見出し得なかったので、
製鉄所では、そのまま非鉄メーカーに外販しているのが
実情である。This type of by-product Zn-containing material contains about 25% Zn in the case of electric furnace dust, and about 50% in the case of dust pellet dust. Since no recovery method could be found,
The reality is that steel mills sell their products directly to non-ferrous metal manufacturers.
もし、Ｚｎを酸化亜鉛や金属亜鉛として回収できれば、
製鉄所内でメッキ用などに利用できる。If Zn can be recovered as zinc oxide or metal zinc,
It can be used for plating purposes in steel works.
そこで、本発明は、副生Ｚｎ含有物の有効利用を簡素な
操作によって達成することを目的としている。Therefore, an object of the present invention is to achieve effective utilization of by-product Zn-containing materials through simple operations.
前記問題点を解決するための本発明は、製鉄所で副生す
る各種ダストまたはメッキドロス等の副生Ｚｎ含有物を
ペレット又は塊の状態で揮化炉内に投入し、炉内を還元
雰囲気および９００〜１１００℃の温度に保持し、炉頂
からＺｎ含有ガスを取り出し、酸化または還元状態にし
、それぞれ酸化亜鉛または金属亜鉛の粉体として回収す
るか、凝縮させて液体亜鉛として回収するか、あるいは
これらの併行操作により回収することを特徴とするもの
である。In order to solve the above-mentioned problems, the present invention introduces by-product Zn-containing substances such as various dusts or plating dross produced in steel mills in the form of pellets or lumps into a volatilization furnace, and creates a reducing atmosphere in the furnace. The Zn-containing gas is taken out from the top of the furnace at a temperature of 900 to 1100°C, brought into an oxidized or reduced state, and recovered as zinc oxide or metal zinc powder, respectively, or condensed and recovered as liquid zinc, or It is characterized in that it is recovered by these parallel operations.
本発明に従って、９００〜１１００℃の温度で還元揮化
すると、揮化ガス中にｐｂおよびＦｅ分の少いかなり高
い純度のＺｎガスとなり、これを適当な処理すると、製
鉄所のメッキ原料やメッキの付帯設備に十分使用できる
純度のＺｎとして回収できる。According to the present invention, by reducing and volatilizing at a temperature of 900 to 1100°C, the volatilized gas becomes a Zn gas of considerably high purity with low PB and Fe content. It can be recovered as Zn of sufficient purity to be used in ancillary equipment.
以下本発明をさらに詳説する。 The present invention will be explained in more detail below.
第１図は本発明法を実施するための設備全体図で、出口
を共通にした２つの揮化炉ＩＡ、ＩＢが設けられており
、第１揮化炉ＩＡに対しては、電気炉ダスト、ダストペ
レット（ダスベレ）ダストおよび炭材としてＣＤＱコー
クス粉など粒径の細いものを混合槽２にて混合したもの
をペレタイザー３などのベレット化機によりベレット化
したものが投入される。また、第２揮化炉ＩＢに対して
は、亜鉛系メッキ設備でのメッキドロス塊が投入され、
それぞれ９００〜１１００℃に炉内が外部からの熱によ
り保持される。Figure 1 is an overall diagram of the equipment for carrying out the method of the present invention, in which two volatilization furnaces IA and IB with a common outlet are provided. , Dust pellets (dasbele) A mixture of dust and a carbon material having a fine particle size such as CDQ coke powder in a mixing tank 2 is pelletized by a pelletizing machine such as a pelletizer 3, and the resulting mixture is fed into the mixing tank 2. In addition, the plating dross mass from the zinc-based plating equipment is input to the second volatilization furnace IB.
The inside of the furnace is maintained at 900 to 1100°C by heat from the outside.
これによって、副生Ｚｎ含有物中のＺｎ分が揮化し、ま
たＰ分の一部がガスに同伴して出口から出るようになる
。出口には、セラミックフィルター４等の耐熱性フィル
ターが設けられ、ガス分のみを透過するようになってい
る。フィルター４を出たガスは、第１導路５Ａおよび第
２導路５Ｂの両方に移行可能となっており、処理に際し
てはダンパー６Ａ、６Ｂの開閉操作が行なわれる。As a result, the Zn content in the by-product Zn-containing material is volatilized, and a part of the P content comes to be accompanied by the gas and exit from the outlet. A heat-resistant filter such as a ceramic filter 4 is provided at the outlet to allow only gas to pass through. The gas exiting the filter 4 can be transferred to both the first guide path 5A and the second guide path 5B, and the dampers 6A and 6B are opened and closed during processing.
いま、ダンパー６Ｂが閉、ダンパー６Ａが開とされると
、第１導路５Ａには、冷却剤吹込ロアから空気またはＮ
２等の還元ガスが吹込まれる。空気が吹込まれると、Ｚ
ｎ蒸気は、酸化され、集塵機８によりＺｎＯとして捕捉
され、還元ガスが吹込まれる金属亜鉛として捕捉され、
それぞれ亜鉛粉体として回収される。Now, when the damper 6B is closed and the damper 6A is opened, air or N is supplied from the coolant blowing lower to the first guide path 5A.
A second class reducing gas is blown into the tank. When air is blown in, Z
n vapor is oxidized and captured as ZnO by the dust collector 8, captured as metallic zinc into which reducing gas is blown,
Each is recovered as zinc powder.
ダンパー６Ａが閉、ダンパー６Ｂが開とされると、Ｚｎ
蒸気は第２導路５Ｂを通ってａ縮とット１３へと移行す
る。この途中には、液体鉛のシャワリング手段９が設け
られ、ここから液体鉛貯槽１０からポンプ１１により循
環路１２を通った液体鉛が散布され、これによって’ｌ
ｎ蒸気が凝縮し、液体となって凝縮ビット１３内に滴下
される。このピント１３の底部にはスキンマー１４が設
けられ、Ｚｎと鉛とに分離され、鉛は貯槽１０に導かれ
、液体亜鉛は液体Ｚｎ貯槽１５に貯えられる。When the damper 6A is closed and the damper 6B is opened, Zn
The steam passes through the second conduit 5B to the a-compression cut 13. A liquid lead showering means 9 is provided on the way, from which liquid lead which has passed through a circulation path 12 is sprayed from a liquid lead storage tank 10 by a pump 11.
The n vapor condenses and becomes a liquid which drips into the condensation bit 13. A skimmer 14 is provided at the bottom of the pinto 13 to separate Zn and lead, the lead being led to a storage tank 10 and the liquid zinc being stored in a liquid Zn storage tank 15.
この液体亜鉛はそのまま成形し金属亜鉛粒またはベレッ
トとするか、再蒸留工程を経てメッキ原料などに利用さ
れる。This liquid zinc is either directly shaped into metal zinc particles or pellets, or is used as a raw material for plating after undergoing a redistillation process.
一方、揮化炉ＩＡ、ＩＢの炉底からの鉄およびカーボン
リッチの残渣は、製鉄原料として高炉や焼結機に供給さ
れる。On the other hand, iron and carbon-rich residues from the bottoms of the volatilization furnaces IA and IB are supplied to a blast furnace and a sintering machine as raw materials for iron manufacturing.
次いで実験例を示しながら、本発明法の操作条件につい
て説明する。Next, the operating conditions of the method of the present invention will be explained while showing experimental examples.
第２図に示すタンマン炉２０にと実験を行った。Experiments were conducted using a Tammann furnace 20 shown in FIG.
炉２０内にはグラファイトルツボ２１を収納し、この中
にＺｎ含有物を投入し、ヒータ２２により加熱するとと
もに、炉内にＮ、ガスを吹込んだ、４５０龍角に開口し
た炉頂上部には、５００１１角のフード２３を設け、揮
化ガスをバグフィルタ−２４により捕集するようにした
。また、炉頂開口部には、１５０ｆｌφの開口の排出機
２５を取付けた。炉高は７００鳳■である。A graphite crucible 21 is housed in the furnace 20, into which a Zn-containing material is charged and heated by a heater 22, and nitrogen and gas are blown into the furnace. A 50011 square hood 23 was provided, and the volatilized gas was collected by a bag filter 24. Further, a discharger 25 having an opening of 150 flφ was attached to the top opening of the furnace. The height of the furnace is 700 mm.
かかる実験設備にて、まずＺｎ含有物として電気炉ダス
トを用いるとともに、還元揮（気）化温度を変えてみた
ところ、第３図のように、回収ＺｎＯ中には、温度上昇
とともに、Ｆｅおよびｐｂ分が多く含まれることが判っ
た。したがって、揮化温度は１１００℃以下、より好ま
しくは９８０℃、特には９５０℃以下がよいことが判っ
た。なお、９００℃未満では、揮化が生じないことも判
った。Using this experimental equipment, we first used electric furnace dust as the Zn-containing substance and varied the reduction volatilization temperature. As shown in Figure 3, as the temperature rose, Fe and It was found that it contained a large amount of PB. Therefore, it has been found that the volatilization temperature is preferably 1100°C or lower, more preferably 980°C, particularly 950°C or lower. It was also found that no volatilization occurred at temperatures below 900°C.
他方、炉内に吹込むＮ、ガス流量による変化を調べたと
ころ、第４図の通りであった。これによると、吹込ガス
流量は少いほど優れている。したがって、還元ガスの吹
込流量は、１００４４／ｓｉｎ 。On the other hand, when we investigated the changes caused by the N injected into the furnace and the gas flow rate, we found the results shown in Figure 4. According to this, the smaller the blowing gas flow rate, the better. Therefore, the blowing flow rate of the reducing gas is 10044/sin.
特に５０１／ｓｉｎ以下が望ましい。Particularly desirable is 501/sin or less.
さらに、第５図のように、衝突板２６を付設してみたと
ころ、第６図の結果が得られた。衝突板の効果が高いこ
とが判った。また、第７図のように、フード径を２００
℃ｍ角にしてみたところ、第８図の結果が得られ、フー
ド径が小さくすることがよいことが判った。Furthermore, when a collision plate 26 was attached as shown in FIG. 5, the results shown in FIG. 6 were obtained. It was found that the impact plate was highly effective. Also, as shown in Figure 7, the hood diameter is 200 mm.
When we tried to make the diameter of the hood smaller, we obtained the results shown in Figure 8, indicating that it is better to make the hood diameter smaller.
上記の最適条件を組み合わせた実験炉では、ＺｎＯおよ
びＺｎともに９９．１％の純度のものが得られた。In an experimental furnace combining the above optimal conditions, ZnO and Zn with a purity of 99.1% were obtained.
以上の通り、本発明によれば、副生Ｚｎ含有物の有効利
用を図ることができるとともに、高純度亜鉛として回収
できる。As described above, according to the present invention, by-product Zn-containing materials can be effectively utilized and can be recovered as high-purity zinc.
第１図は本発明性実施のための処理設備の概要図、第２
図は実験設備の概要図、第３図は還元気化温度による純
度変化グラフ、第４図はＮ２ガス吹込流量の相異による
純度変化グラフ、第５図は他の形式の実験炉の概要図、
第６図は衝突板の有無による純度変化グラフ、第７図は
さらに他の形式の実験炉の概要図、第８図はフード開口
径の相異による純度変化グラフである。
ＩＡ、ＩＢ・・・揮化炉、３・・・ペレタイザー、４・
・・フィルター、７・・・冷却剤吹込口、８・・・集塵
機、１３・・・凝縮ビット、１５・・・液体亜鉛貯槽、
２０・・・タンマン炉。
第２図
第３図
１じυし１皮＋”Ｃ１
第４図
第５図 第６図
７図
Ｂ図Figure 1 is a schematic diagram of processing equipment for carrying out the invention;
The figure is a schematic diagram of the experimental equipment, Figure 3 is a graph of purity changes due to reduction vaporization temperature, Figure 4 is a graph of purity changes due to differences in N2 gas injection flow rate, Figure 5 is a schematic diagram of other types of experimental reactors,
FIG. 6 is a graph of purity changes depending on the presence or absence of a collision plate, FIG. 7 is a schematic diagram of another type of experimental reactor, and FIG. 8 is a graph of purity changes due to differences in hood opening diameter. IA, IB...Volatilization furnace, 3...Pelletizer, 4.
... filter, 7 ... coolant inlet, 8 ... dust collector, 13 ... condensation bit, 15 ... liquid zinc storage tank,
20... Tanman furnace. Fig. 2 Fig. 3 Fig. 1 + 1 skin + "C1 Fig. 4 Fig. 5 Fig. 6 Fig. 7 Fig. B
Claims (1)
等の副生Ｚｎ含有物をペレットまたは塊状の状態で揮化
炉内に投入し、炉内を還元雰囲気および９００〜１１０
０℃の温度に保持し、炉頂からＺｎ含有ガスを取り出し
、酸化または還元状態にし、それぞれ酸化亜鉛または金
属亜鉛の粉体として回収するか、凝縮させて液体亜鉛と
して回収するか、あるいはこれらの併行操作により回収
することを特徴とする副生含有物の処理方法。(1) By-product Zn-containing substances such as various dusts or plating dross produced in steel mills are put into a volatilization furnace in the form of pellets or lumps, and the inside of the furnace is heated to a reducing atmosphere and
The Zn-containing gas is taken out from the top of the furnace at a temperature of 0°C, brought into an oxidized or reduced state, and recovered as zinc oxide or metallic zinc powder, respectively, or condensed and recovered as liquid zinc, or 1. A method for treating by-products, characterized by recovering them through parallel operations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62093562A JPS63259035A (en) | 1987-04-16 | 1987-04-16 | Treatment of material containing by-product zn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62093562A JPS63259035A (en) | 1987-04-16 | 1987-04-16 | Treatment of material containing by-product zn |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63259035A true JPS63259035A (en) | 1988-10-26 |
Family
ID=14085688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62093562A Pending JPS63259035A (en) | 1987-04-16 | 1987-04-16 | Treatment of material containing by-product zn |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63259035A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0437606A (en) * | 1990-05-29 | 1992-02-07 | Nippon Steel Corp | Production of high-purity zinc oxide powder |
| JPH0452234A (en) * | 1990-06-20 | 1992-02-20 | Kansai Seiko Kk | Method for separating and recovering metallic component from collected dust |
| JP2003113432A (en) * | 2001-10-04 | 2003-04-18 | Sintokogio Ltd | Recovering method for collected shot-blast zinc dust |
| JP2007154312A (en) * | 2005-11-09 | 2007-06-21 | Sinto Brator Co Ltd | Method for producing zinc valuable, and zinc valuable |
| KR100947514B1 (en) | 2009-04-06 | 2010-03-12 | (주)풍전비철 | The method recovering high purity zinc-oxide from zinc dross |
-
1987
- 1987-04-16 JP JP62093562A patent/JPS63259035A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0437606A (en) * | 1990-05-29 | 1992-02-07 | Nippon Steel Corp | Production of high-purity zinc oxide powder |
| JPH0452234A (en) * | 1990-06-20 | 1992-02-20 | Kansai Seiko Kk | Method for separating and recovering metallic component from collected dust |
| JP2003113432A (en) * | 2001-10-04 | 2003-04-18 | Sintokogio Ltd | Recovering method for collected shot-blast zinc dust |
| JP2007154312A (en) * | 2005-11-09 | 2007-06-21 | Sinto Brator Co Ltd | Method for producing zinc valuable, and zinc valuable |
| KR100947514B1 (en) | 2009-04-06 | 2010-03-12 | (주)풍전비철 | The method recovering high purity zinc-oxide from zinc dross |
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