JPS64558Y2 - - Google Patents
Info
- Publication number
- JPS64558Y2 JPS64558Y2 JP12057584U JP12057584U JPS64558Y2 JP S64558 Y2 JPS64558 Y2 JP S64558Y2 JP 12057584 U JP12057584 U JP 12057584U JP 12057584 U JP12057584 U JP 12057584U JP S64558 Y2 JPS64558 Y2 JP S64558Y2
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- lead
- furnace body
- steelmaking dust
- induction
- 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
- 230000006698 induction Effects 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 239000000428 dust Substances 0.000 claims description 9
- 238000009628 steelmaking Methods 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 230000007423 decrease Effects 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 238000003723 Smelting Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 239000002184 metal Substances 0.000 description 16
- 229910052751 metal Inorganic materials 0.000 description 16
- 239000002893 slag Substances 0.000 description 8
- 239000008188 pellet Substances 0.000 description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 5
- 239000003575 carbonaceous material Substances 0.000 description 5
- 238000006722 reduction reaction Methods 0.000 description 5
- 229910052725 zinc Inorganic materials 0.000 description 5
- 239000011701 zinc Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000034 method 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Description
【考案の詳細な説明】
（関連産業分野）
本考案は製鋼ダストから有価金属回収プロセス
における溶融還元炉として使用する誘導炉の改良
に関する。[Detailed Description of the Invention] (Related Industrial Field) The present invention relates to an improvement of an induction furnace used as a smelting reduction furnace in the process of recovering valuable metals from steelmaking dust.
（従来技術）
一般に知られているるつぼ形誘導炉は加熱効率
を高めるため、炉の内径をできるかぎり小さく
し、深さを深くした円筒形につくられている。製
鋼ダストを溶融還元するために炭材と共に誘導炉
に装入して溶解すると、ダスト中の金属酸化物と
炭材が溶湯中で還元反応を起こし、その還元反応
により多量のCOガスを発生し、溶湯の噴き上げ
現象を生じる恐れがある。またスラグが多量に発
生するため電磁撹拌力の弱い場合、スラグは溶湯
表面に浮遊し、追装する材料がスラグ層に捕ま
り、溶解しないいわゆる棚吊現象を生じる恐れが
ある。(Prior Art) Generally known crucible induction furnaces are made in a cylindrical shape with an inner diameter as small as possible and a deep depth in order to increase heating efficiency. When steelmaking dust is charged into an induction furnace together with carbonaceous materials and melted, the metal oxides in the dust and carbonaceous materials undergo a reduction reaction in the molten metal, and this reduction reaction generates a large amount of CO gas. , there is a risk of molten metal blowing up. In addition, if a large amount of slag is generated and the electromagnetic stirring force is weak, the slag will float on the surface of the molten metal, and there is a risk that the material to be added will be caught in the slag layer, causing a so-called hanging phenomenon in which the material is not dissolved.
（解決しようとする問題点）
本考案はこうした従来の問題点を除去し、加熱
効率の高い誘導炉を提供することを目的とする。(Problems to be Solved) The present invention aims to eliminate these conventional problems and provide an induction furnace with high heating efficiency.
（問題点の解決手段）
上記の目的を達成するための本考案の要旨とす
るところは、るつぼ形誘導炉の炉体内部形状を上
方より下方に断面積が順次漸減する有底で且つ、
炉底に鉛溜を有するるつぼ容器を形成したことを
特徴とする。(Means for solving the problem) The gist of the present invention for achieving the above object is that the internal shape of the furnace body of a crucible-type induction furnace is a bottomed one in which the cross-sectional area gradually decreases from the top to the bottom;
It is characterized by forming a crucible container with a lead reservoir at the bottom of the furnace.
（実施例）
以下、その実施例を図面によつて説明する。１
は装置全体を支持するフレームでその上端に取り
付けられた軸受２により炉体３を傾動自在に支持
する。炉体３はその内部に上方より下方に断面積
が順次漸減する有底の容器を形成しており、さら
に容器底部には鉛溜４が形成されている。５は炉
体３の外周に装備された誘導コイル、６は炉体３
の上部に設けた出湯樋、７は出湯孔栓、８は給電
線、９は冷却水管である。(Example) Hereinafter, the example will be described with reference to the drawings. 1
is a frame that supports the entire apparatus, and supports a furnace body 3 in a tiltable manner by means of a bearing 2 attached to the upper end of the frame. Inside the furnace body 3, a bottomed container is formed whose cross-sectional area gradually decreases from the top to the bottom, and a lead reservoir 4 is formed at the bottom of the container. 5 is an induction coil installed on the outer periphery of the furnace body 3; 6 is the furnace body 3;
7 is a hot water tap, 8 is a power supply line, and 9 is a cooling water pipe.
炉体３の上方は排ガス孔１１とペレツト・炭材
の投入孔１２を備えた炉蓋１０により覆われてい
る。排気ダクト１３は排ガス孔１１と図示されて
いない亜鉛コンデンサを結ぶ。 The upper part of the furnace body 3 is covered by a furnace lid 10 having an exhaust gas hole 11 and a pellet/charcoal material charging hole 12. The exhaust duct 13 connects the exhaust gas hole 11 to a zinc capacitor (not shown).
（作用）
以上の通り構成された誘導炉を使用して操業を
開始するには、まず炉蓋１０を開き、銑鉄のスタ
ーテイングブロツクを炉内へ装入した後、電流を
通電して誘導加熱し1400℃の溶銑を作る。(Function) To start operation using the induction furnace configured as described above, first open the furnace lid 10, charge the starting block of pig iron into the furnace, and then apply current to induction heating. and make hot metal at 1400℃.
次に製鋼ダストを予めペレツト化したものを
950℃に予熱して炭材とともにペレツト投入孔１
２から炉内へ連続的に投入する。炉内の溶湯は電
磁力により撹拌され、投入したペレツトＰは溶湯
に巻きこまれ、溶解する。 Next, the steelmaking dust is pelletized in advance.
Preheat to 950℃ and insert pellets into hole 1 along with carbon material.
From 2 onwards, it is continuously charged into the furnace. The molten metal in the furnace is stirred by electromagnetic force, and the pellets P introduced are rolled up into the molten metal and melted.
ペレツトＰ中の鉄、亜鉛および鉛等の酸化物が
炭素により還元される。その際、COガスを発生
する。鉄と鉛等は溶湯に取りこまれ、亜鉛は蒸気
になつてCOガスと共に排ガス孔１１、排気ダク
ト１３を経て図示されていない亜鉛コンデンサへ
導かれて凝縮され粗亜鉛として、またCOガスは
燃料として回収される。炭材は還元剤および溶鉄
の加炭剤として消費される。溶鉄は加炭され溶銑
になる。炉の撹拌力が弱い場合、スラグの一部は
溶湯表面の炉壁近くに滞留するが、本考案の誘導
炉では、そのスラグ層厚が薄くなり、連続的に追
装されるペレツトおよび炭材の溶解の妨げとなる
ようなことはない。 Oxides such as iron, zinc and lead in pellet P are reduced by carbon. At that time, CO gas is generated. Iron, lead, etc. are incorporated into the molten metal, and the zinc becomes steam, which is led together with CO gas to a zinc condenser (not shown) through the exhaust gas hole 11 and exhaust duct 13, where it is condensed as crude zinc, and the CO gas is used as fuel. will be collected as. Carbonaceous material is consumed as a reducing agent and a carburizing agent for molten iron. Molten iron is carburized and becomes hot metal. When the stirring power of the furnace is weak, some of the slag stays on the surface of the molten metal near the furnace wall, but in the induction furnace of this invention, the slag layer is thinner and the pellets and carbonaceous materials that are continuously added are It does not interfere with the dissolution of.
炉内の溶湯が一定量に達したとき、出湯孔栓７
を抜きとり、図示されていない油圧シリンダによ
り、軸受２を支点に炉体３を傾動して溶湯全量の
１／３が取鍋に出湯される。出湯完了後、炉体３を
水平に戻し出湯樋６に孔栓７を差し込み、前記操
作の繰返しにより、製鋼ダストの溶解が続行され
る。 When the molten metal in the furnace reaches a certain amount, tap tap 7
The furnace body 3 is tilted about the bearing 2 by a hydraulic cylinder (not shown), and 1/3 of the total amount of the molten metal is tapped into a ladle. After tapping is completed, the furnace body 3 is returned horizontally, the hole plug 7 is inserted into the tapping gutter 6, and the above operation is repeated to continue melting the steelmaking dust.
出湯された溶銑とスラグは比重により分離さ
れ、溶銑は製鋼炉へホツトチヤージされる。 The tapped hot metal and slag are separated based on specific gravity, and the hot metal is hot-charged to the steelmaking furnace.
前記操作の際、比重の重い鉛は鉛溜り４に溜ま
るので適当な時期に出湯する。 During the above operation, lead having a heavy specific gravity accumulates in the lead reservoir 4, so the hot water is tapped out at an appropriate time.
（効果）
本考案は以上の通り、製鋼ダストの溶融還元用
の誘導炉の炉体内部形状を上方より下方に断面積
が順次漸減する有底の容器に形成したため炉内の
上部断面積は大きくなり、製鋼ダストの溶融還元
の際、還元反応により発生するCOガス抜けが良
くまた、溶湯表面に浮かぶスラグ層厚が薄くなり
追装材料がスラグ層から抜けやすくなり、従来の
問題点を確実に除去できる。(Effects) As described above, in this invention, the internal shape of the furnace body of an induction furnace for smelting reduction of steelmaking dust is formed into a bottomed container whose cross-sectional area gradually decreases from the top to the bottom, so the upper cross-sectional area inside the furnace is large. Therefore, when steelmaking dust is melted and reduced, the CO gas generated by the reduction reaction is better released, and the thickness of the slag layer floating on the surface of the molten metal becomes thinner, making it easier for the additional material to escape from the slag layer, thus reliably solving the problems of the conventional method. Can be removed.
一方、炉体下部では径が小さくなつているため
誘導加熱効率に好結果が得られ、また炉体底部に
溜りを設けたため、比重の重い金属例えば鉛等が
この溜りに溜り、鉄と容易に分離することが出来
る。 On the other hand, since the diameter of the lower part of the furnace body is smaller, good results are obtained for induction heating efficiency, and because a reservoir is provided at the bottom of the furnace body, metals with heavy specific gravity, such as lead, accumulate in this reservoir and easily mix with iron. Can be separated.
図面は本考案に係る誘導炉の概略側断面図であ
る。
１……支持フレーム、２……軸受、３……炉
体、４……鉛溜、５……誘導コイル、６……出湯
樋、７……出湯孔栓、８……給電線、９……冷却
水管、１０……炉蓋、１１……排ガス孔、１２…
…ペレツト投入孔、１３……排気ダクト、Ｐ……
ペレツト。
The drawing is a schematic side sectional view of an induction furnace according to the present invention. DESCRIPTION OF SYMBOLS 1... Support frame, 2... Bearing, 3... Furnace body, 4... Lead reservoir, 5... Induction coil, 6... Tap tap, 7... Tap tap, 8... Power supply line, 9... ...Cooling water pipe, 10...Furnace lid, 11...Exhaust gas hole, 12...
...Pellet input hole, 13...Exhaust duct, P...
pellets.
Claims (1)
いて、その炉体内部形状を上方より下方に断面積
が漸減する有底で且つ、底部に溶鉄から溶鉛を比
重分離するための鉛溜を有するるつぼ容器を形成
したことを特徴とする製鋼ダスト溶融還元用誘導
炉。 In a crucible-type induction furnace for melting and reducing steelmaking dust, the internal shape of the furnace body has a bottom whose cross-sectional area gradually decreases from the top to the bottom, and the crucible vessel has a lead reservoir at the bottom for separating molten lead from molten iron by specific gravity. An induction furnace for smelting and reducing steelmaking dust, characterized in that it has the following characteristics:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984120575U JPS6136297U (en) | 1984-08-07 | 1984-08-07 | Induction furnace for steelmaking dust smelting reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984120575U JPS6136297U (en) | 1984-08-07 | 1984-08-07 | Induction furnace for steelmaking dust smelting reduction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6136297U JPS6136297U (en) | 1986-03-06 |
| JPS64558Y2 true JPS64558Y2 (en) | 1989-01-09 |
Family
ID=30679389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984120575U Granted JPS6136297U (en) | 1984-08-07 | 1984-08-07 | Induction furnace for steelmaking dust smelting reduction |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6136297U (en) |
-
1984
- 1984-08-07 JP JP1984120575U patent/JPS6136297U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6136297U (en) | 1986-03-06 |
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