JPS5896982A - Device for dissolving dust pellet - Google Patents
Device for dissolving dust pelletInfo
- Publication number
- JPS5896982A JPS5896982A JP19660181A JP19660181A JPS5896982A JP S5896982 A JPS5896982 A JP S5896982A JP 19660181 A JP19660181 A JP 19660181A JP 19660181 A JP19660181 A JP 19660181A JP S5896982 A JPS5896982 A JP S5896982A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- melting
- pellets
- dust
- combustion
- 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
Landscapes
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は製鋼炉等の金属溶解炉の操業過程において発生
する高価な金属元素を含有するダストの処理装置の49
にこの一ダストv造粒して得られたダストペレットの溶
解装置<関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for treating dust containing expensive metal elements generated during the operation process of a metal melting furnace such as a steelmaking furnace.
This invention relates to a dissolving device for dust pellets obtained by granulating this dust.
金属溶解炉から発生するダストにはW、Ni、No。Dust generated from metal melting furnaces includes W, Ni, and No.
C’o等の高価な金属元素が酸化物として含まれている
ことが多く、従来これ等のダストは集塵装置により吸引
捕集されている。そし【、このダストはペレタイザによ
り造粒してペレットとし、炭素材料と共に金属溶融物が
存在する電気炉中に装入し、還元雰囲気下で還元溶融し
合金化する方法が提案されている。しかし、この方法は
抵抗発熱炉。Expensive metal elements such as C'o are often contained in the form of oxides, and conventionally these dusts have been collected by suction using a dust collector. [Then, a method has been proposed in which this dust is granulated into pellets using a pelletizer, charged together with a carbon material into an electric furnace in which a molten metal is present, and reduced and melted in a reducing atmosphere to form an alloy. However, this method uses a resistance heating furnace.
アーク炉等を便用するため多量の電力Y$1とし。In order to conveniently use an arc furnace, etc., a large amount of electricity will be required for Y$1.
また炉内を還元雰囲気にするという複雑な工程を含む大
規模な設備を必要とするものである。したがって、工業
的実用化には大きな難点があった。Furthermore, it requires large-scale equipment that includes a complicated process of creating a reducing atmosphere inside the furnace. Therefore, there have been major difficulties in industrially putting it into practical use.
本発明はこのような欠点を解消し、比較的小規模でも高
い金属回収率で、ダスト中の金属元素を還元して、金属
化し、再利用が可能な合金を再生産することかできる省
資源温金属溶解炉V提供することt目的とするものであ
る。The present invention eliminates these drawbacks and reduces the metal elements in dust with a high metal recovery rate even on a relatively small scale, thereby saving resources by metallizing and reproducing a reusable alloy. It is an object of the present invention to provide a hot metal melting furnace.
高炉法は鉱石Y還元溶解するのに優れた方法である。ダ
ストヘレッ)V自家処理する場合ダストの発生量が少い
ためその処理装置は小規模であり。The blast furnace method is an excellent method for reducing and dissolving ore Y. (Dust Hell) V When in-house processing is performed, the amount of dust generated is small, so the processing equipment is small-scale.
ペレット化も高度処理が経済的に困難でその品質は悪い
。このようなダストペレッ)Y高炉で溶解する場合、こ
の高炉は/J1!ifでそれ自身温度及びその分布が不
安定で、そのうえダストペレットは金属品位が低く多量
のスラグを発生し、このスラグはその下層の溶融金属へ
の熱補給V阻害して凝固させ易い。一般に高炉で安定操
業を維持するためKは鉱石の品位は50%以上必要であ
るとされている。更にダストペレットは強度が低く崩壊
し易く、一部は再びダスト化する一方造粒において大粒
径化が困難で、このため溶解炉内の流速分布に悪影響を
与え、炉内の設定流速を低位にする必要がある。これ等
の理由のため特に炉底部の温度が低下し易く、安定操業
を困難にする。また低温溶融物から金属の分離も不完全
となる。Pelletization is economically difficult to perform advanced processing and its quality is poor. When melting such dust pellets in a Y blast furnace, this blast furnace is /J1! If the temperature and its distribution are unstable, the dust pellets have low metal quality and generate a large amount of slag, which inhibits heat supply to the molten metal below and tends to solidify. Generally, in order to maintain stable operation in a blast furnace, K is required to have a grade of 50% or more in the ore. Furthermore, dust pellets have low strength and are easy to disintegrate, and while some of them turn into dust again, it is difficult to increase the particle size during granulation, which has a negative impact on the flow velocity distribution in the melting furnace, and the set flow velocity in the furnace must be set to a low value. It is necessary to For these reasons, the temperature at the bottom of the furnace tends to drop, making stable operation difficult. Furthermore, separation of metal from the low-temperature melt becomes incomplete.
本発明は、高炉型の溶解炉で滴下した溶融物ケ炉底部に
貯留することなく隣接して設けられた加熱室に溶解炉圧
力で吹山型可燃ガスと共に導入することKより高粘性の
溶融物Yも容易に流動させまた溶解炉炉底温度低下を防
止し、また加熱i1tこの可燃ガスと別の供給源から圧
送された支燃ガスで燃焼して高温に維持しスラグと金属
の完全分離を行なわせるものである。The present invention is characterized in that the molten material dripped in a blast furnace type melting furnace is not stored at the bottom of the furnace, but is introduced into an adjacent heating chamber together with a blowing mountain-type combustible gas at melting furnace pressure. It also allows Y to flow easily and prevents a drop in temperature at the bottom of the melting furnace, and also maintains the temperature at a high temperature by burning this combustible gas with combustion-supporting gas pumped from another source to completely separate slag and metal. It is something you can do.
次に実施例で本発明を説明する。図は本発明の実施例の
溶解装置の断面図である。ダストベレット溶解装置は溶
解炉ユ及び加熱室2からなり、鋼板製気密殻に耐火物l
内張りされている。溶解炉1は炉頂部に二重ベルにより
気密!保持しつつダストペレット及びコークスを主とす
る炭素材を装入可能な装入装置3及び炉頂ガス排出口4
Y:、炉底よりやや上部に支燃ガス送入口である複数の
羽口5χ並びに傾斜した炉底部の最下部に加熱室ヱに溶
融物と炉底ガスを導く流入口6ンそれぞれ有している。Next, the present invention will be explained with examples. The figure is a sectional view of a melting device according to an embodiment of the present invention. The dust pellet melting equipment consists of a melting furnace unit and a heating chamber 2. The dust pellet melting equipment consists of a melting furnace unit and a heating chamber 2.
It is lined. Melting furnace 1 is airtight with double bells at the top of the furnace! A charging device 3 capable of charging carbon materials mainly consisting of dust pellets and coke while holding them, and a top gas discharge port 4
Y: A plurality of tuyeres 5χ serving as combustion-supporting gas inlets slightly above the furnace bottom, and 6 inlets each for guiding the melt and furnace bottom gas into the heating chamber 1 at the lowest part of the inclined furnace bottom. There is.
加熱室ヱは流入口6で溶解炉ユと連通され、支燃ガス吹
込ロア、燃焼廃ガス排出口8及び溶融物排出口9を有し
ている。The heating chamber 1 is communicated with the melting furnace 1 through an inlet 6, and has a combustion-supporting gas blowing lower, a combustion waste gas outlet 8, and a molten material outlet 9.
ダストペレット及びコークス等の炭素材は装入装[5で
交互に装入されることにより層状になって炉内に充填さ
れている。図示しない予熱装置で予熱された空気等の支
燃ガスは羽口5により炉内に吹込まれ、炭素材馨燃焼さ
せ、燃焼生成ガスとなってその大部分は充填物層中を違
して上昇し炉頂ガス排出口4から出て行く。この過程で
炉底部分では既に還元されたダストペレットY溶解して
滴下させ、上昇しつつ未還元ダストペレットの還元及び
充填物との熱交換ン行い、炉頂ガス排出口4から排出さ
れ、図示しない予熱装置等でその潜熱を利用される。Carbon materials such as dust pellets and coke are charged alternately in the charging charge [5] to form layers and fill the furnace. Combustion-supporting gas such as air preheated by a preheating device (not shown) is blown into the furnace through the tuyere 5, where the carbon material is combusted and becomes combustion gas, most of which rises through the packed bed. The gas exits from the furnace top gas outlet 4. In this process, the dust pellets Y that have already been reduced are melted and dropped at the bottom of the furnace, and as they rise, the unreduced dust pellets are reduced and heat exchanged with the filling, and then they are discharged from the top gas outlet 4, as shown in the figure. The latent heat is used in preheating devices, etc.
炉底部分で溶融滴下したダストペレットと炭素材からの
アッシュは炉底に達し、その傾斜により流下し、炉底の
燃焼ガスが噴流して富に高温に保持されている流入口6
Y通って加熱室ヱに流れることKより、溶解炉炉底は溶
融物が滞留することなく高温の燃焼ガスの衝風にさらさ
れ、温度低下を防止される。The dust pellets and ash from the carbon material that melted and dripped at the bottom of the furnace reach the bottom of the furnace and flow down due to the slope, and the combustion gas at the bottom of the furnace flows into the inlet 6 where it is kept at a high temperature.
Because K flows through Y and into the heating chamber E, the bottom of the melting furnace is exposed to a blast of high-temperature combustion gas without stagnation of molten material, and a drop in temperature is prevented.
溶解炉炉底より力0熱室ヱ内に噴出するガスは流入口6
内でその内p面及び低温で高粘性である場合もある溶融
物もその顕熱で加熱し、流下を促進して加熱室2に噴出
する。加熱室ヱには支燃ガス吹込ロアから図示しない圧
送装置により加圧された支燃ガスが吹込まれ、溶解炉1
から噴出する高発熱量のガスと共に燃焼し、加熱室ヱ内
を溶解炉炉底より高温に保持して流入した低温の溶融物
t−加熱してスラグと溶融金属の比重差による分離を完
全にする。燃焼!完了したガスは燃焼廃ガス排出口8を
通り廃棄又は他の適当な用途に顕熱を利用してもよいが
、溶解炉炉底から加熱室ヱに流入するガス量を制御する
ため、その経路内に適当な絞り弁Y設けるとよい。加熱
室ヱの燃焼は溶融金属の再酸化を防止するための弱還元
性とするのがよい。加熱室ヱ内で加熱されてスラグと溶
融金属に分離した溶融物は常時は粘土等で塞がれたそれ
ぞれ専用の溶融物排出口9及び9′から排出されとりべ
又は鋳造場で鋳造処理されるが、溶融物排出口は共用で
あってもよい。The gas ejected from the bottom of the melting furnace into the zero heat chamber is inlet 6.
Inside, the internal p-plane and the melt, which may be highly viscous at low temperatures, are also heated by their sensible heat, promoting flow and ejecting into the heating chamber 2. Pressurized combustion-supporting gas is blown into the heating chamber 1 from the combustion-supporting gas blowing lower by a pressure feeding device (not shown), and the melting furnace 1
The inside of the heating chamber is kept at a higher temperature than the bottom of the melting furnace, and the incoming low-temperature molten material is heated to completely eliminate separation due to the difference in specific gravity between slag and molten metal. do. combustion! The completed gas may be disposed of through the combustion waste gas outlet 8, or the sensible heat may be used for other appropriate purposes, but in order to control the amount of gas flowing from the bottom of the melting furnace into the heating chamber, the route is It is advisable to provide a suitable throttle valve Y inside. It is preferable that the combustion in the heating chamber E be of a weak reducing nature to prevent re-oxidation of the molten metal. The molten material that is heated in the heating chamber and separated into slag and molten metal is discharged from dedicated molten material discharge ports 9 and 9', which are normally blocked with clay, etc., and is cast in a ladle or at a foundry. However, the melt outlet may be shared.
次に以上に述べた実施例のデータ例を示す。ダストペレ
ットは弧元電気炉の炉体系じんダストより造粒したもの
である。溶解炉の能力2.5(ペレット)/daff、
コークス比t2t(コークス>/l <ペレット)、金
属回収率250−2yoKg/l (ペレット)この回
収率はほぼ理論値に近い。回収金属分析例(重量比)C
s5%、S=S<%# lMn52.5S 、 P S
CL4% 、 Siα04%* Ni54.5% m
Cr55.5% *W 115%MO112%e V
S O,S%、(:oHo、4fbであり、操業は終始
順調であった。Next, data examples of the embodiments described above will be shown. The dust pellets are granulated from the furnace system dust of the electric arc furnace. Melting furnace capacity 2.5 (pellets)/daff,
Coke ratio t2t (coke>/l <pellets), metal recovery rate 250-2yo Kg/l (pellets) This recovery rate is almost close to the theoretical value. Recovered metal analysis example (weight ratio) C
s5%, S=S<%# lMn52.5S, P S
CL4%, Siα04%* Ni54.5% m
Cr55.5% *W 115%MO112%e V
SO, S%, (:oHo, 4fb), and the operation was smooth from beginning to end.
以上述べたよった本発明は小型の高炉型溶解炉で炉底K
l!l融愉ヲ滞留させないで遂次排出することにより操
業の安定ンはかるもので、高収率、低コストで金属を回
収するものである。The present invention as described above is a small blast furnace type melting furnace.
l! By sequentially discharging metals without allowing them to stagnate, operations can be stabilized, and metals can be recovered with high yield and low cost.
第1図は本発明のダストペレット溶解装置の断面図であ
る。
1%溶解炉、ヱ加熱室、3寡装入装置、4蓚炉頂ガス排
出口、5s羽ロ、61流入ロ、7寥支燃ガス吹込口、8
s燃焼廃ガス排出口、9蓼溶融物排出口。
才 1 図FIG. 1 is a sectional view of the dust pellet melting device of the present invention. 1% melting furnace, heating chamber, 3 small charging device, 4 furnace top gas outlet, 5s impeller, 61 inlet, 7 combustion supporting gas inlet, 8
s Combustion waste gas outlet, 9 molten material outlet. 1 figure
Claims (1)
し、これを溶解する溶解装@において、コークスを主と
する炭素剤と該ペレットを炉頂より装入し羽口から支燃
ガスを吹込み、該ペレットを還元溶解する溶解炉並びK
[!解炉炉底を流入口で連通し、溶融物排出口、支燃ガ
ス吹込口及び燃焼廃ガス排出口を有する耐大物で内張す
されてなる加熱室からなることw%徴とするダストペレ
ット溶解装置。The dust generated from a metal melting furnace, etc. is granulated into pellets, which are then melted into a melting equipment@, where a carbon agent mainly consisting of coke and the pellets are charged from the top of the furnace, and combustion-supporting gas is introduced from the tuyeres. Melting furnace row K for blowing and reducing and melting the pellets
[! Dust pellets consisting of a heating chamber that communicates with the bottom of the melting furnace through an inlet and is lined with a large material having a melt outlet, a combustion support gas inlet, and a combustion waste gas outlet. Melting equipment.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19660181A JPS5896982A (en) | 1981-12-07 | 1981-12-07 | Device for dissolving dust pellet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19660181A JPS5896982A (en) | 1981-12-07 | 1981-12-07 | Device for dissolving dust pellet |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5896982A true JPS5896982A (en) | 1983-06-09 |
Family
ID=16360453
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19660181A Pending JPS5896982A (en) | 1981-12-07 | 1981-12-07 | Device for dissolving dust pellet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5896982A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6011211A (en) * | 1983-06-30 | 1985-01-21 | Nagao Soda Kk | Method for treating or recovering alkali hydrosulfide solution with organic solvent |
-
1981
- 1981-12-07 JP JP19660181A patent/JPS5896982A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6011211A (en) * | 1983-06-30 | 1985-01-21 | Nagao Soda Kk | Method for treating or recovering alkali hydrosulfide solution with organic solvent |
JPH0372565B2 (en) * | 1983-06-30 | 1991-11-19 | Nagao Kk |
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