JPS63259037A - Method for using material containing by-product zn as raw plating material - Google Patents
Method for using material containing by-product zn as raw plating materialInfo
- Publication number
- JPS63259037A JPS63259037A JP62093564A JP9356487A JPS63259037A JP S63259037 A JPS63259037 A JP S63259037A JP 62093564 A JP62093564 A JP 62093564A JP 9356487 A JP9356487 A JP 9356487A JP S63259037 A JPS63259037 A JP S63259037A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- purification
- soln
- supplied
- dissolution
- 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
- 238000007747 plating Methods 0.000 title claims abstract description 26
- 239000000463 material Substances 0.000 title claims abstract description 14
- 239000006227 byproduct Substances 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims description 11
- 238000000746 purification Methods 0.000 claims abstract description 21
- 238000004090 dissolution Methods 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 239000002002 slurry Substances 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 238000002844 melting Methods 0.000 claims description 11
- 230000008018 melting Effects 0.000 claims description 11
- 238000007670 refining Methods 0.000 claims description 8
- 230000002829 reductive effect Effects 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 20
- 229910052742 iron Inorganic materials 0.000 abstract description 13
- 239000000843 powder Substances 0.000 abstract description 13
- 239000000872 buffer Substances 0.000 abstract description 4
- 238000005342 ion exchange Methods 0.000 abstract description 4
- 239000011701 zinc Substances 0.000 description 58
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 28
- 239000000428 dust Substances 0.000 description 16
- 239000011787 zinc oxide Substances 0.000 description 14
- 229910052725 zinc Inorganic materials 0.000 description 11
- 239000007788 liquid Substances 0.000 description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 6
- 239000008188 pellet Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000009713 electroplating Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000002826 coolant Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- -1 and PB) Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000013014 purified material Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000126 substance Substances 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
キドロス粉等の副生Ｚｎ含有物をメッキ原料化する処理
方法に関する。Detailed Description of the Invention [Industrial Field of Application] The present invention uses Zn-containing substances produced as by-products in steel mills, such as electric furnace dust, dust pellet dust, kiln dust, and plating dross powder, as a plating raw material. related to processing methods for
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％などかなりＺｎを含有しているにもかかわ
らず、有効なＺ’ｎ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。Although this type of by-product Zn-containing material contains a considerable amount of Zn, for example, about 25% in the case of electric furnace dust and about 50% in the case of dust pellet dust, it is not effective for Z' Since no method has been found to recover and process the metal, steel mills sell it 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含有物をメッキ原料として
有効利用を図ることを目的としている。Therefore, an object of the present invention is to effectively utilize the by-product Zn-containing material as a plating raw material.
前記問題点を解決するための本発明は、製鉄所で副生ず
るＺｎ含有物を、還元雰囲気および９００〜１１００℃
の温度に保持した揮化炉に投入し、還元揮化し、そのＺ
ｎ蒸気からそれぞれ純度９０％以上の金属ＺｎおよびＺ
ｎＯを得る一方で；第１の溶解槽から最終の溶解槽まで
順次溶解液が移行する複数の溶解槽と、最終溶解液を受
ける少くとも一つの精製槽とを備え、未溶解のＺｎ含有
スラリーは前方の槽へ移行させる向流式溶解精製設備を
設け；前記最終溶解槽にＺｎＯを投入し、精製槽の少く
とも一つに金属Ｚｎを投入し、Ｚｎ溶解精製を行い、得
られた溶解精製液をＺｎ系メッキ原料とすることを特徴
とするものである。The present invention aims to solve the above-mentioned problems by removing Zn-containing materials produced as by-products in steel works in a reducing atmosphere and at a temperature of 900 to 1100°C.
The Z
Metallic Zn and Z with a purity of 90% or higher, respectively, from n vapor
While obtaining nO; comprising a plurality of dissolution tanks in which the solution is sequentially transferred from a first dissolution tank to a final dissolution tank, and at least one purification tank that receives the final solution, an undissolved Zn-containing slurry; A counter-current melting and refining equipment is installed to transfer ZnO to the front tank; ZnO is charged into the final melting tank, metallic Zn is charged into at least one of the refining tanks, Zn melting and refining is carried out, and the resulting melt is This method is characterized in that the purified liquid is used as a Zn-based plating raw material.
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蒸気となり、これを酸化冷却させればＺｎ
Ｏとなり、Ｎ２ガス等の還元ガスにて冷却させれば金属
Ｚｎとなる。しかし、これらＺｎＯおよび金属Ｚｎの純
度は高いもののメッキ原料とするには未だ不十分な純度
であるので、メッキ性状を悪化させる主にＦｅ分および
ｐｂ分を除去するために溶解精製を行う。この場合、向
流式溶解精製設備にて、溶解液と未溶解Ｚｎ含有スラリ
ーとを向流接触させると、精製効果が高く、メッキ原料
として十分に使用可能なものとなる。According to the present invention, when reductive and volatilized at a temperature of 900 to 1100°C, Zn vapor of considerably high purity with a small amount of PB and Fe is produced in the volatilized gas, and when this is oxidized and cooled, Zn
When it is cooled with a reducing gas such as N2 gas, it becomes metal Zn. However, although the purity of these ZnO and metal Zn is high, it is still insufficient in purity to be used as a plating raw material, so melting and refining is performed to mainly remove Fe and PB components that deteriorate the plating properties. In this case, if the solution and the undissolved Zn-containing slurry are brought into countercurrent contact with each other in a countercurrent dissolution and purification facility, the purification effect is high and the product can be sufficiently used as a plating raw material.
ところで、Ｚｎ系メッキ、たとえば純Ｚｎ、 Ｚｎ−Ｎ
ｉ。By the way, Zn-based plating, such as pure Zn, Zn-N
i.
Ｚｎ −Ｆｅ等のメッキに当り、Ｚｎ原料としてＺｎＣ
０，やＺｎＯを用いることができるが、この場合の純度
はきわめて高＜、Ｆｅおよびｐｂ分が低いものでなくて
はならないため、予め精製された高価なものを使用しな
くてはならなかった。これに対して、本発明では、揮化
により回収したＺｎＯおよび金属Ｚｎ中にＦｅおよびｐ
ｂ分が少し含まれるものの、ＺｎＯについてはＺｎイオ
ンの供給源とするが、金属Ｚｎにてイオン交換精製する
ので、向流接触溶解精製過程で、Ｆｅおよびｐｂ分をメ
ッキ原料とするに十分な含有率まで確実に除去できるの
で、揮化処理によって回収したＺｎＯおよび金属Ｚｎを
そのまま使用でき、高価なＺｎ原料を使用しなくて足り
、プロセスとしてきわめて経済的なものとなる。When plating Zn-Fe, etc., ZnC is used as a Zn raw material.
0, or ZnO can be used, but in this case the purity must be extremely high and the Fe and PB content must be low, so expensive pre-purified materials had to be used. . In contrast, in the present invention, Fe and p are present in ZnO and metal Zn recovered by volatilization.
ZnO is used as a source of Zn ions, although it contains a small amount of b content, but since it is purified by ion exchange using metallic Zn, in the countercurrent catalytic melting and refining process, enough Fe and pb content can be used as a plating raw material. Since the content can be reliably removed, the ZnO and metal Zn recovered by the volatilization treatment can be used as they are, and there is no need to use expensive Zn raw materials, making the process extremely economical.
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、ダストベ
レット（ダスペレ）ダストおよび皮材として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などのペレット化機によりペレット化
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ンキドロス塊が投入され、
それぞれ９００〜１１００″Ｃに炉内が外部がらの熱に
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. , a mixture of dust pellets (Daspere) dust and thin particles such as CDQ coke powder as skin material in a mixing tank 2 is pelletized by a pelletizing machine such as a pelletizer 3, and the resulting mixture is fed into the tank. In addition, to the second volatilization furnace IB, the Menchidros lump from the zinc-based plating equipment is charged,
The inside of the furnace is maintained at 900-1100''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
。出口部分には、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４Ｂ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 portion 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 4B, 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、冷却剤吹込ロアがら空気またはＮ２
等の還元ガスが吹込まれる。空気が吹込まれると、Ｚｎ
蒸気は、酸化され、乾式ハゲフィルター等の集塵機８Ａ
、８ＢによりＺｎＯとして捕捉され、それぞれ亜鉛粉体
として回収される。If damper 6B is now closed and damper 6A is open, then
The first conduit 5A has air or N2 from the lower coolant blower.
A reducing gas such as When air is blown in, Zn
The steam is oxidized and passed through a dust collector such as a dry bald filter.
, 8B as ZnO and 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を通って凝縮ピット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、ここから液体貯蔵槽１０からポンプ１１により循
環路１２を通った約１８００℃の液体鉛が散布され、こ
れによってＺｎ蒸気が凝縮し、液体となって凝縮ピット
１３内に滴下される。このピット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 condensation pit 13. On the way, a liquid lead showering means 9 is provided, from which liquid lead at about 1800° C. which has passed through a circulation path 12 is sprayed from a liquid storage tank 10 by a pump 11, thereby condensing the Zn vapor. It becomes a liquid and drips into the condensation pit 13. A skimmer 14 is provided at the bottom of this pit 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ペレッ
トとするか、あるいは造塊し、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 metallic zinc particles or pellets, or it is made into agglomerates, undergoes a redistillation process, and is used as a raw material for plating.
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製鉄原
料として供給される。On the other hand, iron and carbon-rich residues from the bottoms of the volatilization furnaces IA and IB are supplied as raw materials for iron manufacturing to a blast furnace and a sintering machine.
一方、前述の空気またはＮ２ガスを冷却剤吹込ロアから
吹き込む場合、空気吹込にあっては、ダンパー１６Ａが
開、ダンパー１６Ｂが閉とされることにより集塵機８Ａ
にはＺｎＯ粉が捕集され、逆のダンパー１６Δ、１６Ｂ
の開閉操作後、今度はＮ２ガスを吹込むと、金属Ｚｎ粉
が集塵機８Ｂに捕集される。これらのＺｎＯ粉および金
属Ｚｎ粉は、次述する溶解精製設備に供給される。On the other hand, when the above-mentioned air or N2 gas is blown from the coolant blowing lower, the damper 16A is opened and the damper 16B is closed, so that the dust collector 8A
The ZnO powder is collected, and the opposite dampers 16Δ and 16B
After the opening/closing operation, when N2 gas is blown in, metal Zn powder is collected in the dust collector 8B. These ZnO powder and metal Zn powder are supplied to the melting and refining equipment described below.
同設備は、第１〜第３溶解槽１７Ａ、１７Ｂ。The equipment includes first to third dissolution tanks 17A and 17B.
１７Ｃおよびイオン交換精製槽１８、シックナー１９、
濾過機２０．２１を備えている。また、２２はパフファ
タンク、２３は電気メツキ設備である。17C and ion exchange purification tank 18, thickener 19,
It is equipped with a filter 20.21. Further, 22 is a puffer tank, and 23 is electroplating equipment.
かかる設備の下では、Ｚｎ溶解液が供給路２２Ａ〜２２
Ｃを介して第１溶解槽１７Ａから精製槽１８へと順に移
行するとともに、未溶解のＺｎ含有スラリーは、返送路
２３Ａ〜２３Ｃを介して、逆に精製槽１８から第１溶解
槽１７Ａへと返送され、これによってＺｎ溶解液と未溶
解のＺｎ含有スラーとが向流接触するようになっている
。Under such equipment, the Zn solution is supplied to the supply channels 22A to 22.
C, the undissolved Zn-containing slurry sequentially moves from the first dissolution tank 17A to the purification tank 18 via the return channels 23A to 23C, and conversely from the purification tank 18 to the first dissolution tank 17A. The Zn solution and the undissolved Zn-containing slurry come into countercurrent contact with each other.
前記最終の溶解槽、実施例では第３溶解槽１７ＣにＺｎ
Ｏ粉が供給され、供給路２２Ｂから供給されるＺｎ溶解
液によって溶解が図られた後、供給路２２Ｃを経て精製
槽１８に導かれ、ここで前述の金属Ｚｎ粉が供給され、
イオン交換精製（ＺｎとＦｅおよびｐｂとのイオン化傾
向の差を利用した精製）が図られた後、シックナー１９
および濾過機２０に導かれ不純物や残渣との分離が図ら
れた後、電気メツキ設備２３との間で、メッキ使用量と
溶解精製量とのバランスをバッファするバッファタンク
２２に一旦貯留された後、メッキ設備、たとえば電気メ
ツキ設備２３に供給され、鋼板からメッキ鋼板を得る場
合のメッキ原料とされる。ここで消費されなかったＺｎ
を含むたとえば硫酸浴メッキ液は、第１溶解槽１７Ａに
新溶解液として専かれ、Ｚｎの溶解液として使用される
。Zn was added to the final dissolving tank, in the example, the third dissolving tank 17C.
After the O powder is supplied and dissolved by the Zn solution supplied from the supply path 22B, it is led to the purification tank 18 via the supply path 22C, where the above-mentioned metal Zn powder is supplied,
After ion exchange purification (purification using the difference in ionization tendency between Zn, Fe, and PB), thickener 19
After being led to a filter 20 and separated from impurities and residues, it is once stored in a buffer tank 22 that buffers the balance between the amount of plating used and the amount of melting and purification between it and the electroplating equipment 23. , is supplied to plating equipment, for example, electroplating equipment 23, and is used as a plating raw material when obtaining a plated steel plate from a steel plate. Zn not consumed here
For example, a sulfuric acid bath plating solution containing Zn is exclusively used as a new solution in the first dissolution tank 17A, and is used as a solution for Zn.
上記向流接触溶解精製によって、Ｆｅまたはｐｂ等の不
純物は順次前槽へ導かれ、最終的に第１溶解槽１７Ａ底
から導出され、濾過機２１によって残渣として系外へ排
出される。また、この不純物への順次前槽への移行によ
って、不純物含量が少くなった溶解液が順次後槽へ移行
されることによって精製が図られ純化が達成される。By the countercurrent catalytic melting and refining described above, impurities such as Fe or PB are sequentially introduced into the front tank, finally drawn out from the bottom of the first dissolving tank 17A, and discharged as a residue by the filter 21 to the outside of the system. Moreover, by sequentially transferring the impurities to the front tank, the dissolved solution having a reduced impurity content is sequentially transferred to the rear tank, thereby achieving purification.
なお、上記溶解精製設備において、精製槽を複数設けて
もよい。また、検量に沈降分離槽を設けてもよい。ただ
し、向流接触方式を採る必要はある。In addition, in the above-mentioned melting and purification equipment, a plurality of purification tanks may be provided. Further, a sedimentation separation tank may be provided for calibration. However, it is necessary to use a countercurrent contact method.
次いで実験例を示しながら、本発明法の揮化操作条件に
ついて説明する。Next, the volatilization operation 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３０にて揮化実験を行った。炉
２０内にはグラファイトルツボ３１を収納し、この中に
Ｚｎ含有物を投入し、ヒータ３２により加熱するととも
に、炉内にＮ２ガスを吹込んだ。A volatilization experiment was conducted in a Tammann furnace 30 shown in FIG. A graphite crucible 31 was housed in the furnace 20, and a Zn-containing material was charged into the crucible and heated by the heater 32, while N2 gas was blown into the furnace.
４５０龍角に開口した炉頂上部には、５００龍角のフー
ド２３を設け、揮化ガスをバグフィルタ−３４により捕
集するようにした。また、炉頂開口部には、１５０鰭φ
の開口の排出板３５を取付けた。炉高は７００■ｌであ
る。A hood 23 with a diameter of 500 degrees was provided at the top of the furnace having an opening of 450 degrees, and the volatilized gas was collected by a bag filter 34. In addition, there is a 150 fin diameter at the top opening.
A discharge plate 35 was attached to the opening. The furnace height is 700μl.
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、温度の上
昇とともに、Ｆｅおよびｐｂ分が多（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 material and varied the reduction volatilization temperature. As shown in Figure 3, as the temperature rose, Fe was added to the recovered ZnO. It was found that the volatilization temperature is 1100°C or less, more preferably 980°C, especially 950°C or less. It was also found that this does not occur.
第１図の設備にて、Ｚｎ ： ５６．９８％、 Ｆｅ
： １６．４３％、Ｐｂ：４．８０％のダストベレット
ダストを揮化炉にてＺｎの揮化を行い、９９．１％のＺ
ｎＯ粉および金属Ｚｎ粉を得た。このとき、ＺｎＯ粉に
はＦｅが０．３１％、ｐｂが０．７３％、金属Ｚｎ粉に
はＦｅが０．１４％、ｐｂが０．６８％含まれており、
これらを用い向流接触溶解精製したところ、最終のメッ
キ原料液中には、Ｆｅが０．３６ＰＰＭ 、Ｐｂが０．
１１ ＰＰＭ含まれているのみで、きわめて高いＺｎ純
度のメッキ原料液が得られた。In the equipment shown in Figure 1, Zn: 56.98%, Fe
: 16.43%, Pb: 4.80% dust pellet dust was subjected to Zn volatilization in a volatilization furnace, resulting in 99.1% Zn.
nO powder and metal Zn powder were obtained. At this time, the ZnO powder contains 0.31% Fe and 0.73% PB, and the metal Zn powder contains 0.14% Fe and 0.68% PB.
When these were subjected to countercurrent contact melting and purification, the final plating raw material solution contained 0.36 PPM of Fe and 0.36 PPM of Pb.
A plating raw material solution containing only 11 PPM and having extremely high Zn purity was obtained.
以上の通り、本発明によれば、製鉄所での副生Ｚｎ含有
物からきわめて純度の高いメッキ原料液を得ることがで
きる。As described above, according to the present invention, a plating raw material solution with extremely high purity can be obtained from Zn-containing by-products produced in steel works.
第１図は本発明性実施のための設備の全体概要図、第２
図は揮化実験炉の概要図、第３図は気（揮）化温度の相
異による得られるＺｎＯ中のＦｅ。
ｐｂ含有率の変化図である。
ＩＡ、ＩＢ・・・揮化炉、７・・・冷却剤吹込口、８Ａ
。
８Ｂ・・・集塵機、１７Ａ〜１７Ｃ・・・溶解槽、１８
・・・精製槽、２３・・・電気メツキ設備。
第２図
第３図
１五短７’ｌＪ、 （℃）Figure 1 is an overall schematic diagram of the equipment for carrying out the invention;
The figure is a schematic diagram of an experimental volatilization furnace, and Figure 3 shows Fe in ZnO obtained by different volatilization temperatures. It is a change diagram of pb content rate. IA, IB...Volatilization furnace, 7...Coolant inlet, 8A
. 8B...Dust collector, 17A-17C...Dissolution tank, 18
...Purification tank, 23...Electroplating equipment. Figure 2 Figure 3 15 short 7'lJ, (℃)
Claims (1)
び９００〜１１００℃の温度に保持した揮化炉に投入し
、還元揮化し、そのＺｎ蒸気からそれぞれ純度９０％以
上の金属ＺｎおよびＺｎＯを得る一方で；第１の溶解槽
から最終の溶解槽まで順次溶解液が移行する複数の溶解
槽と、最終溶解液を受ける少くとも一つの精製槽とを備
え、未溶解のＺｎ含有スラリーは前方の槽へ移行させる
向流式溶解精製設備を設け；前記最終溶解槽にＺｎＯを
投入し、精製槽の少くとも一つに金属Ｚｎを投入し、Ｚ
ｎ溶解精製を行い、得られた溶解精製液をＺｎ系メッキ
液とすることを特徴とする副生Ｚｎ含有物のメッキ原料
化処理方法。(1) Zn-containing materials produced as by-products in steel mills are put into a reducing atmosphere and a volatilization furnace maintained at a temperature of 900 to 1100°C, where they are reduced and volatilized, and from the Zn vapor, metal Zn and While obtaining ZnO; comprising a plurality of dissolution tanks in which the solution is sequentially transferred from a first dissolution tank to a final dissolution tank, and at least one purification tank that receives the final solution, an undissolved Zn-containing slurry is produced; A counter-current melting and refining equipment is provided to transfer the ZnO to the front tank;
1. A method for processing a by-product Zn-containing material into a plating raw material, which comprises performing n-dissolution and purification and using the obtained dissolution and purification solution as a Zn-based plating solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62093564A JPS63259037A (en) | 1987-04-16 | 1987-04-16 | Method for using material containing by-product zn as raw plating material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62093564A JPS63259037A (en) | 1987-04-16 | 1987-04-16 | Method for using material containing by-product zn as raw plating material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63259037A true JPS63259037A (en) | 1988-10-26 |
Family
ID=14085745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62093564A Pending JPS63259037A (en) | 1987-04-16 | 1987-04-16 | Method for using material containing by-product zn as raw plating material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63259037A (en) |
-
1987
- 1987-04-16 JP JP62093564A patent/JPS63259037A/en active Pending
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