JPS59170224A - Method for adding ultrafine powder dust to raw material for sintering - Google Patents
Method for adding ultrafine powder dust to raw material for sinteringInfo
- Publication number
- JPS59170224A JPS59170224A JP58045677A JP4567783A JPS59170224A JP S59170224 A JPS59170224 A JP S59170224A JP 58045677 A JP58045677 A JP 58045677A JP 4567783 A JP4567783 A JP 4567783A JP S59170224 A JPS59170224 A JP S59170224A
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- dust
- sintering raw
- sintering
- powder dust
- 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.)
- Granted
Links
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
- Glanulating (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、鉄粉や石灰石を含む集塵ダストなどの超微粉
ダストを焼結用原料へ添加する方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for adding ultrafine dust, such as dust containing iron powder or limestone, to a raw material for sintering.
鉄分や石灰分を含む集塵機ダストも有効活用するため、
焼結原料として使用されるが、このダスト中には通常１
ｇｍ以下の超微粒子を含んでおり、二次飛散による大気
汚染、焼結原料の目詰まりによる通気性の悪化等の問題
があり、あまり好んで使用されていないのが現状である
。In order to effectively utilize dust collector dust containing iron and lime,
It is used as a sintering raw material, but this dust usually contains 1
It contains ultrafine particles of less than gm, and there are problems such as air pollution due to secondary scattering and deterioration of air permeability due to clogging of the sintering raw material, so it is currently not used very favorably.
集塵ダストのようなｌｐｍ以下の超微粉は、水分を添加
しても濡れ性が極めて悪いため、取扱い上に問題があり
、二次飛散の防止を図ることが必要であり、更に焼結用
原料としては均一な混合を図って原料の通気性を悪化さ
せないことがダスト利用に際し、不可欠の条件である。Ultrafine powder of lpm or less, such as collected dust, has extremely poor wettability even when water is added, so there are problems in handling, and it is necessary to prevent secondary scattering. When using dust, it is essential to mix the raw material uniformly so that the permeability of the raw material is not deteriorated.
第１図は従来の一般的な焼結系統図を示すものである。FIG. 1 shows a conventional general sintering system diagram.
配合槽１からフィーダー２によって切り出された焼結原
料はベルトコンベア３によりドラムミキサー４，６で造
粒され、ベルトコンベア７を経て給鉱ホツパ−８に貯え
られ、フィーダー９、シュー）１０により焼結機１２に
供給され、点火炉１１で点火されて焼結機１２上で焼結
し、クラッシャー１３で破砕され焼結鉱クーラー１５で
冷却されベルトコンベア１６により高炉原料槽へ送出さ
れる。この工程中で発生する粉塵ダストは集塵フード２
１，２２、集塵ダクト２３などにより回収される。従来
、集塵ダストは、配合４６１のいずれかに取込まれ、他
の銘柄と共に切出しフィーダー２によりすＪ出され、ベ
ルトコンベア３により、ドラムミキサー４へ運ばれて、
給水配管２７により、水分を５〜６％添加されながら混
合・造粒されていたが、微粒子による発塵の発生並ひに
焼結用原料の通気性の悪化という問題があった。The sintered raw material cut out from the blending tank 1 by the feeder 2 is granulated by the drum mixers 4 and 6 by the belt conveyor 3, then stored in the feed hopper 8 via the belt conveyor 7, and sintered by the feeder 9 and shoe 10. It is supplied to the sintering machine 12, ignited in the ignition furnace 11, sintered on the sintering machine 12, crushed by the crusher 13, cooled by the sinter cooler 15, and sent to the blast furnace raw material tank by the belt conveyor 16. The dust generated during this process is removed from the dust collection hood 2.
1, 22, collected by the dust collection duct 23, etc. Conventionally, collected dust is taken into one of the formulations 461, taken out along with other brands by a cutting feeder 2, conveyed to a drum mixer 4 by a belt conveyor 3,
Mixing and granulation were carried out while adding 5 to 6% water through the water supply pipe 27, but there were problems such as generation of dust due to fine particles and deterioration of air permeability of the raw material for sintering.
本発明はこれらの問題点を解消する為、ドラムミキサー
からυト出された混合・造粒済みの焼結用原料の一部を
トラムミキサー人口側ヘリサイクルさせ、そのリサイク
ル経路の途中に予め各所集塵機等より集められた超微粉
ダストを貯留するダスト添加ホンパーを設けて、このダ
スト添加ホッパーからダストを一定量ずつ排出して上記
リサイクル原料上に散布し、この混合・造粒済みのリサ
イクル原料を核にしてダストをその表面に付着させ添加
ダストを発塵することなしに混合・造粒することを目的
とするものである。In order to solve these problems, the present invention recycles a part of the mixed and granulated raw materials for sintering discharged from the drum mixer to the tram mixer side, and places them in advance at various locations along the recycling route. A dust addition hopper is installed to store the ultra-fine dust collected from a dust collector, etc., and a fixed amount of dust is discharged from this dust addition hopper and sprinkled on the recycled raw materials, and the recycled raw materials that have been mixed and granulated are The purpose is to make the dust adhere to the surface of the core and mix and granulate the added dust without generating dust.
本発明の実施例の系統図を第２図、第３図に示す。第２
図は第１図のドラムミキサー４，６廻りのみを抜き出し
たものであり、第３図はリサイクル原料上に超微粉を散
布した状態を示す説明図で、第３図（ａ）は第２図のＡ
断面、第３図（ｂ）はその縦断面図を示す。以下、第２
図、第３図に従い説明する。ドラムミキサー４または６
の排出口からのリサイクル経路１７（または１８．１９
）の途中にダスト添加水・ンパー２６を設置し１例えば
ダストホッパー２４からタンクローリ−車２５などでダ
スト添加ホッパー２６にダストを幅送し、このダスト添
加ホッパー２６からリサイクル原料３１の上にロータリ
ーフィーダー２９ま、たは振動フィーダー３３を介して
超微粉ダスト３２を一定量ずつ切り出す。リサイクル原
料３１は、既に水分５〜６％を有し、混合・造粒も完了
しているため、このリサイクル原料上に散布された超微
粉ダスト３２はリサイクル原料表面に付着して容易に濡
れ、リサイクル原料に同伴され、リサイクル原料が他の
原料とともに再びドラムミキサーの中に入れば、超微粉
ダストは発塵することなく造粒され、また、このような
状態での混合・造粒では、造粒済みのリサイクル原料３
１を核としてタストがその回りに付着することになるこ
とから、焼結用原料の通気性が阻害ｙれることはない。System diagrams of embodiments of the present invention are shown in FIGS. 2 and 3. Second
The figure shows only the parts around the drum mixer 4 and 6 in Figure 1, and Figure 3 is an explanatory diagram showing the state in which ultrafine powder is sprinkled on recycled raw materials. A of
FIG. 3(b) shows a longitudinal sectional view thereof. Below, the second
This will be explained with reference to FIGS. drum mixer 4 or 6
recycling route 17 (or 18.19) from the outlet of
), a dust-added water pump 26 is installed in the middle of the process, and the dust is conveyed from the dust hopper 24 to the dust-adding hopper 26 using a tank truck 25, for example, and from this dust-adding hopper 26 onto the recycled raw material 31, a rotary feeder is installed. 29 or a vibrating feeder 33 to cut out the ultrafine powder dust 32 in fixed amounts. Since the recycled raw material 31 already has a moisture content of 5 to 6% and has been mixed and granulated, the ultrafine dust 32 sprinkled on the recycled raw material adheres to the surface of the recycled raw material and easily wets it. If the recycled raw materials are entrained in the recycled raw materials and put into the drum mixer again together with other raw materials, the ultrafine powder dust will be granulated without generating dust. Granulated recycled raw materials 3
Since the tast adheres around 1 as a core, the air permeability of the sintering raw material is not hindered.
本発明方法によるリサイクル原料を全焼結原−月の１０
％とした場合、Ｂ微粉ダストを焼結原料中に１％程合し
ても通気性は悪化せず、通常の焼結操業による焼結鉱の
生産が可能であった。Total sintering of recycled raw materials by the method of the present invention - 10 months
%, even if about 1% of B fine powder dust was added to the sintering raw material, the air permeability did not deteriorate, and it was possible to produce sintered ore through normal sintering operations.
また、本発明、方法により焼結工場で発生するダスト全
量を焼結用原料として再使用することが可能となった。Furthermore, the present invention and method make it possible to reuse the entire amount of dust generated in a sintering factory as a raw material for sintering.
第１図は従来の焼結系統図、第２図は本発明方・ 法
を説明する超微粉ダストの処理系統図、第３図（ａ）は
第２図のＡ断面図、（ｂ）はその縦断面図である。
■・・・配合槽、２・・・切出しフィーダー、３・・・
ベルトコンベア、４・・・ドラムミキサー、５・・・ベ
ルトコンベア、６・・・ドラムミキサー、７・・・ベル
トコンベア、８・・・給鉱ホツパ−，９・・・ドラムフ
ィーダー、１０・・・ベルトシュート、１１・・・点火
炉、１２・・・焼結機、１３・・・クラッシャー、１４
・・・シュート、１５・・・焼結鉱クーラー、１６・・
・ベルトコンベア、１７，１８．１９・・・リサイクル
経路、２１．２２・・・集塵フード、２３・・・集塵ダ
クト、２４・・・ダストホッパー、２５・・・タンクロ
ーリ−車、２６・・・ダスト添加ホッパー、２７，２８
１．・給水配管、２９・・・ロータリーフィーター、３
０・・・ベルトカバー、３１・・・リサイクル焼結原料
、３２・・・超微粒子ダスト、３３・・・振動フィーダ
ー
出願人 川崎製鉄株式会社
代理人 弁理士 小杉佳男Fig. 1 is a conventional sintering system diagram, Fig. 2 is a processing system diagram of ultrafine powder dust explaining the method of the present invention, Fig. 3 (a) is a sectional view of A in Fig. 2, and (b) is a sectional view of A in Fig. 2. FIG. ■...Blending tank, 2...Cutting feeder, 3...
Belt conveyor, 4... Drum mixer, 5... Belt conveyor, 6... Drum mixer, 7... Belt conveyor, 8... Ore feeding hopper, 9... Drum feeder, 10...・Belt chute, 11... Ignition furnace, 12... Sintering machine, 13... Crusher, 14
...Chute, 15...Sintered ore cooler, 16...
・Belt conveyor, 17, 18. 19... Recycle route, 21. 22... Dust collection hood, 23... Dust collection duct, 24... Dust hopper, 25... Tank truck, 26. ...Dust addition hopper, 27, 28
1.・Water supply piping, 29...Rotary feeder, 3
0...Belt cover, 31...Recycled sintered raw material, 32...Ultrafine particle dust, 33...Vibration feeder Applicant: Kawasaki Steel Co., Ltd. Agent Patent attorney Yoshio Kosugi
Claims (1)
ムミキサーから排出された原料の一部を分岐して上記ド
ラムミキサーの入口側にリサイクルし、そのリサイクル
経路途中のリサイクル原料上に超微粉ダストを散布して
これに同伴せしめ、他の焼結用原料とともに前記ドラム
ミキサーに供給し混合・造粒することを特徴とするｔＰ
４微粉ダストの焼結用原料への添加方法。1 When adding ultrafine powder dust to the raw material for sintering, a part of the raw material discharged from the drum mixer is branched and recycled to the inlet side of the drum mixer, and the ultrafine powder dust is added onto the recycled raw material in the middle of the recycling route. The tP is characterized in that the tP is dispersed and entrained therein, and then supplied to the drum mixer together with other sintering raw materials for mixing and granulation.
4. Method of adding fine powder dust to raw material for sintering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58045677A JPS59170224A (en) | 1983-03-18 | 1983-03-18 | Method for adding ultrafine powder dust to raw material for sintering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58045677A JPS59170224A (en) | 1983-03-18 | 1983-03-18 | Method for adding ultrafine powder dust to raw material for sintering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59170224A true JPS59170224A (en) | 1984-09-26 |
| JPS6219491B2 JPS6219491B2 (en) | 1987-04-28 |
Family
ID=12726016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58045677A Granted JPS59170224A (en) | 1983-03-18 | 1983-03-18 | Method for adding ultrafine powder dust to raw material for sintering |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59170224A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009144240A (en) * | 2007-11-22 | 2009-07-02 | Jfe Steel Corp | Method of manufacturing molding material for producing sintered ore |
-
1983
- 1983-03-18 JP JP58045677A patent/JPS59170224A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009144240A (en) * | 2007-11-22 | 2009-07-02 | Jfe Steel Corp | Method of manufacturing molding material for producing sintered ore |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6219491B2 (en) | 1987-04-28 |
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