JPS5828323B2 - Processing method for iron-containing sludge - Google Patents
Processing method for iron-containing sludgeInfo
- Publication number
- JPS5828323B2 JPS5828323B2 JP55165884A JP16588480A JPS5828323B2 JP S5828323 B2 JPS5828323 B2 JP S5828323B2 JP 55165884 A JP55165884 A JP 55165884A JP 16588480 A JP16588480 A JP 16588480A JP S5828323 B2 JPS5828323 B2 JP S5828323B2
- Authority
- JP
- Japan
- Prior art keywords
- slag
- ore
- iron
- gutter
- coarse
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 44
- 229910052742 iron Inorganic materials 0.000 title claims description 22
- 238000003672 processing method Methods 0.000 title claims 2
- 239000010802 sludge Substances 0.000 title 1
- 239000002893 slag Substances 0.000 claims description 42
- 238000000034 method Methods 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000004513 sizing Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 description 14
- 239000002994 raw material Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000000843 powder Substances 0.000 description 6
- 238000007873 sieving Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000005245 sintering Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
- C21B2400/022—Methods of cooling or quenching molten slag
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Iron (AREA)
- Treatment Of Sludge (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
【発明の詳細な説明】
本発明は、含鉄スラグの処理方法、特に製鉄所の製鉄地
区で発生する側溝スラグといわれる、含水物である含鉄
スラグを鉄鉱石（以下粗鉱という）ヤード床面に散布し
、次いで、その上に受は入れる粗鉱を積付し、粗鉱の荷
重により、含鉄スラグを圧縮し、脱水させ、これらを混
合処理する含鉄スラグの処理方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for treating iron-containing slag, and in particular, a method for treating iron-containing slag, which is a water-containing substance called gutter slag, generated in the iron-making area of a steel mill, on the floor surface of an iron ore (hereinafter referred to as coarse ore) yard. The present invention relates to a method for treating iron-containing slag, in which the iron-containing slag is spread, and then a receiving coarse ore is piled thereon, the iron-containing slag is compressed and dehydrated by the load of the coarse ore, and the two are mixed.
従来から製鉄所の製鉄地区においては、原料運搬工程な
ど各種の発塵源があり、これらから発生するダストは周
囲の環境を悪化させるので、発塵源に集塵装置を設けて
、そのダストを補集するとともにこれをペレット用原料
として使用している。Traditionally, in the steelmaking area of a steelworks, there are various sources of dust generation, such as the raw material transportation process, and the dust generated from these sources deteriorates the surrounding environment, so dust collectors are installed at the dust sources to remove the dust. The waste is collected and used as raw material for pellets.
しかし、路面に飛散されたダストは、そのまま放置する
と風などにより、再飛散し、環境を害するので、ダスト
の飛散した路面に散水しこれを発塵源廻りに設けた多数
の側溝に流し込み、そのダストをピットに沈澱させるよ
うにしている。However, if the dust scattered on the road surface is left undisturbed, it will be re-dispersed by the wind and harm the environment. Therefore, water is sprinkled on the road surface where the dust is scattered, and the water is poured into a number of ditches built around the dust source. The dust is allowed to settle in the pit.
しかし、この側溝ピットに沈澱したダストは種々異なる
物質が混合されているため、その成分のバラツキが大で
あり、しかも含水物であるので、その使用がきわめて制
限され、適当な処理方法の出現が要望されている。However, since the dust that settles in the gutter pits is a mixture of various different substances, its composition varies widely, and since it contains water, its use is extremely limited, and the emergence of an appropriate treatment method is difficult. It is requested.
さらに、これらについて説明すると、第１図は製鉄所に
おける、原・料の流れを示す工程図であって、図面に示
すように本船１から受入れした粗鉱は、アンローダ２、
受入ＢＣ３，粗鉱ヤードスタッカー４によって粗鉱ヤー
ドに貯蔵される。To further explain these matters, Fig. 1 is a process diagram showing the flow of raw materials in a steelworks.As shown in the drawing, the crude ore received from the ship 1 is transferred to
It is stored in the crude ore yard by the receiving BC 3 and the crude ore yard stacker 4.
このようにして貯蔵された粗鉱は予め決められた払出計
画により、粉状原料は粗鉱ヤードフレマー６、篩分装置
７、プレディングスタッカー８を経て粉ベッド９に積付
けられ、次いで、プレディングリクレーマ１０を経て焼
結工場に供給される。According to a predetermined delivery plan, the coarse ore stored in this way is loaded onto a powder bed 9 via a crude ore yard flamer 6, a sieving device 7, and a predding stacker 8. It is supplied to a sintering factory via a reclaimer 10.
また塊状原料１２は所定範囲の粒度として高炉工場に供
給されるが、粗鉱ヤードリクレマ−６、篩分装置１３、
ブレンディングスタッカー１４を経て塊状ベッド１５に
積付けられた後、ブレンデイングリクレマ−１６を経て
高炉工場１γに供給される。Further, the lumpy raw material 12 is supplied to the blast furnace factory as a particle size within a predetermined range.
After passing through the blending stacker 14 and being stacked on the block bed 15, it is supplied to the blast furnace factory 1γ via the blending lime cremer 16.
なお、篩分装置７の篩上は篩分装置１３に供給され、ま
た篩分装置１３の篩下粉は粉ベッド１５に送られ前記の
手段により処理される。The upper sieve of the sieving device 7 is supplied to the sieving device 13, and the under-sieve powder of the sieving device 13 is sent to the powder bed 15 and treated by the above-mentioned means.
以上原料運搬工程の概要を説明したが、焼結鉱製造工程
においても同様に、粉状物を取扱うので発塵しやすく、
これらの周囲には第２図、第３図に示すような側溝が設
けられており、路面に飛散したダストを水洗して側溝２
０に流し込み、これを各所に設けた側溝ピットに集めら
れその濾過装置２３によりダスト２１（以下側溝スラグ
という）を除去し、水２２だけが矢印方向に流れるよう
にして製鉄所外に側溝スラグ２１を排出しないようにし
ている。The outline of the raw material transportation process has been explained above, but the sintered ore manufacturing process also handles powdery materials, which easily generates dust.
Gutters as shown in Figures 2 and 3 are installed around these, and the dust scattered on the road surface is washed with water and placed in the side grooves 2.
The dust 21 (hereinafter referred to as gutter slag) is removed by the filtration device 23, and only the water 22 flows in the direction of the arrow, and the gutter slag 21 is collected outside the steelworks. We are trying not to emit.
この側溝スラグ２１は路面に飛散したダストだけでなく
、輸送工程での落鉱が含まれており、化学成分や粒度な
とバラツキが大きい。This gutter slag 21 contains not only dust scattered on the road surface but also fallen ore from the transportation process, and has large variations in chemical composition and particle size.
その具体例をあげると第１表および第２表に示す通りで
ある。Specific examples thereof are shown in Tables 1 and 2.
このように側溝スラグの性状はバラツキが大きく、しか
もスラグであることから、製鉄用原料として当然使用で
きる成分を具備しているにもかかわらず、その発生量が
少ないため（粗鉱の使用量に対し約０．２％）その処理
に問題があり、十分に利用されていなかった。As described above, the properties of gutter slag vary widely, and since it is slag, it has components that can naturally be used as a raw material for iron manufacturing, but because the amount generated is small (the amount of crude ore used is (approximately 0.2%) There were problems with its processing and it was not fully utilized.
これら側溝スラグを処理する方法としては、（１）脱水
してペレット用原料としたり、（２）希釈して焼結工場
のミキサー添加水として利用する。Methods for treating these gutter slags include (1) dehydration and use as a raw material for pellets, and (2) dilution and use as water added to a mixer in a sintering factory.
などが考えられる。etc. are possible.
しかし、これらは粗ね部分を篩分して除去するかまたは
粗粒部分を粉砕して粒径を揃えるなどの工程を必要とす
るものであり、さらにその成分のバラツキが大きく、希
望する量を希望する時に処理できない欠点があった。However, these require steps such as sieving and removing the coarse part or crushing the coarse part to make the particle size uniform, and furthermore, the components vary widely, so it is difficult to adjust the desired amount. There was a drawback that it could not be processed when desired.
本発明は、これらの欠点を解決することを目的とするも
のであって、側溝スラグのような含水含鉄スラグを粗鉱
ヤードに散布し、その上に粗鉱を積付することにより、
従来使用できず、処理に困っていた側溝スラグの処理方
法を提供しようとするものである。The purpose of the present invention is to solve these drawbacks, and by scattering water-containing iron-containing slag, such as gutter slag, in a rough ore yard, and piling coarse ore on top of it,
The present invention aims to provide a method for treating gutter slag, which has conventionally been unusable and difficult to treat.
すなわち、本発明は、含鉄スラグを粗鉱スラグを粗鉱ヤ
ードに散布し、次いでその上に受は入れる粗鉱を積付け
し、含鉄スラグを粗鉱とともに均鉱・整粒工程に供給す
ることを特徴とする。That is, the present invention involves scattering iron-containing slag and coarse ore slag in a rough ore yard, then stacking the receiving coarse ore on top of it, and supplying the iron-containing slag together with the coarse ore to the leveling and sizing process. It is characterized by
以下、本発明をさらに詳しく説明する。The present invention will be explained in more detail below.
本発明は、含水側溝スラグを粗鉱ヤードに散布し、その
上に受は入れる鉄鉱石を積付けることにより、側溝スラ
グ中の水分を除去するとともにこれらを均鉱・整粒工程
に供給し、側溝スラグのような性状の含鉄スラグを有効
に利用しようとするものである。The present invention removes moisture in the gutter slag by scattering water-containing gutter slag in a coarse ore yard and stacking iron ore to be received on top of it, and supplies it to the ore leveling and sizing process. This aims to effectively utilize iron-containing slag, which has properties similar to gutter slag.
まず、本発明に用いる側溝スラグを散布し、粗鉱を積付
ける粗鉱ヤードは第４図に示すように、粗鉱を貯蔵する
領域３０とその両側に通路３１その外側に粗鉱ヤードス
タッカー３２、粗鉱ヤードリクレマ−３３が配設されて
いる。First, the rough ore yard where the gutter slag used in the present invention is spread and the rough ore is stacked is as shown in FIG. , a crude ore yard reclaimer 33 is installed.
本発明においては通常側溝スラグは水分を２０〜３０％
含有しているため流動化しやすいので粗鉱ヤードの空地
内の床面全面に散布してもよいが、その上に粗鉱を積付
けると圧密され通路３１にはみ出すことがあるので側溝
スラグ３５を散布する場合は第５図に示すように粗鉱を
貯蔵する領域５の中央部に散布することが好ましい。In the present invention, gutter slag usually has a moisture content of 20 to 30%.
Because it contains slag, it is easy to fluidize, so it may be spread over the entire floor of the open space in the rough ore yard. However, if the rough ore is piled on top of it, it will be consolidated and may protrude into the passageway 31, so the gutter slag 35 is When spreading, it is preferable to spread the crude ore in the center of the area 5 where the crude ore is stored, as shown in FIG.
床面に散布された側溝スラグ３５の空隙内に保持されて
いる水分が粗鉱で圧密され、粗鉱の含有水分が側溝スラ
グより低いことや、粗鉱の粒径が側溝スラグより粗いこ
とから粗鉱の方に移動し、中和されるとともに主として
粗鉱間の間隙より抜は出し、数日後にはハンドリング上
問題のない８〜１２饅の水分値まで低下する。The moisture retained in the voids of the gutter slag 35 spread on the floor is consolidated by the coarse ore, and the moisture content of the coarse ore is lower than that of the gutter slag, and the grain size of the coarse ore is coarser than that of the gutter slag. It moves toward the coarse ore, is neutralized, and is mainly extracted from the gaps between the coarse ores, and after a few days, the moisture value decreases to 8 to 12 moss, which poses no problem in handling.
また、この側溝スラグは粗鉱ヤードリクレーマ３３によ
り粗鉱と混合され払出されるため輸送工程でのトラブル
は起らない。Moreover, since this gutter slag is mixed with coarse ore and discharged by the coarse ore yard reclaimer 33, no trouble occurs during the transportation process.
次いで払出された粗鉱と混合された側溝スラグは、粉ベ
ッドまたは塊ベッドに積付けられる。The gutter slag mixed with the discharged rough ore is then piled onto a powder bed or lump bed.
この粉ベッドまたは塊ベッドは多銘柄の原料を幾層にも
薄く積み上げて１つのベッドが作られるため、側溝スラ
グの成分や粒度変動の大きい性状が改善される。This powder bed or lump bed is made by stacking multiple brands of raw materials in many thin layers to form a single bed, which improves the characteristics of gutter slag, which has large variations in composition and particle size.
以上説明したように、本発明は、含鉄スラグである側溝
スラグを粗鉱ヤードに散布し、その上に鉄鉱石を積付け
、これを次工程である均鉱・整粒工程に供給することに
より、従来その使用が制限されていた側溝スラグを製鉄
工程に有効利用できるようにしたものであって資源の有
効利用に役立つものである。As explained above, the present invention spreads gutter slag, which is iron-containing slag, in a coarse ore yard, piles iron ore on top of it, and supplies this to the next process, which is the leveling and sizing process. This makes it possible to effectively utilize gutter slag, whose use has been restricted in the past, in the steel manufacturing process, thereby contributing to the effective use of resources.
なお、本発明法は、側溝スラグに限られるものではなく
、これと類似した性状をもつＺｎ含有量が０．５重量多
基下でしかも油分を含まない鉄源、カーボン源となるス
ラグであれば、同様に可能である。Note that the method of the present invention is not limited to gutter slag, but can be applied to any slag that has similar properties, has a Zn content of 0.5% by weight, and does not contain oil and is an iron source or carbon source. If so, it is also possible.
第１図は製鉄所における原料流れを示す工程図、第２図
および第３図はそれぞれ側溝ピット平面図およびそのＡ
−Ａ視断面図、第４図ａおよびｂは粗鉱ヤードの平面図
およびその断面図、第５図は本発明の実施例の斜視図で
ある。
符号、１・・・・・・本船、２・・・・・・アンロータ
ー ３・・・・・・受入ＢＣ１４・・・・・・粗鉱ヤー
ドスタッカー ５・・・・・・粗鉱ヤード、６・・・・
・・粗鉱ヤードリクレマー、７・・・・・・篩分装置、
８・・・・・・ブレンディングスタッカー９・・・・・
・粉ベッド、１０・・・・・・ブレンディンブリフレマ
−１１・・・・・・焼結工場、１２・・・・・・塊状原
料、１３・・・・・・篩分装置、１４・・・・・・ブレ
ンディングスタッカー、１５・・・・・・塊ベッド、１
６・・・・・・ブレンディンブリフレマー、１７・・・
・・・高炉工場、２０・・・・・・側溝、２１・・・・
・・側溝スラグ、２２・・・・・・水、２３・・・・・
・濾過装置、３０・・・・・・粗鉱貯蔵領域、３１・・
・・・・通路、３２・・・・・・粗鉱ヤードスタッカー
、３３・・・・・・粗鉱ヤードリクレマー、３４・・・
・・・粗鉱、３５・・・・・・細鉱スラグ、３６・・・
・・・水分。Figure 1 is a process diagram showing the flow of raw materials in a steelworks, Figures 2 and 3 are a plan view of a gutter pit and its A.
4A and 4B are a plan view and a sectional view thereof, and FIG. 5 is a perspective view of an embodiment of the present invention. Code, 1...Vessel, 2...Unrotor 3...Receiving BC14...Rough ore yard stacker 5...Rough ore yard, 6...
... Coarse ore yard reclaimer, 7... Screening device,
8...Blending stacker 9...
・Powder bed, 10...Blending flamer 11...Sintering factory, 12...Lump raw material, 13...Sieving device, 14... ...Blending stacker, 15...Lump bed, 1
6...Blendimbri Flamer, 17...
...Blast furnace factory, 20...Gutter, 21...
...Gutter slag, 22...Water, 23...
・Filtering device, 30... Crude ore storage area, 31...
...Aisle, 32...Rough ore yard stacker, 33...Rough ore yard reclaimer, 34...
... Coarse ore, 35 ... Fine ore slag, 36 ...
···moisture.
Claims (1)
上に受は入れる鉄鉱石を積付し、含鉄スラグを鉄鉱石と
ともに、均鉱・整粒工程に供給することを特徴とする含
鉄スラグの処理方法。1. A method for producing iron-containing slag, which is characterized in that iron-containing slag is spread in an iron ore yard, then iron ore is loaded onto it, and the iron-containing slag is supplied together with the iron ore to the leveling and sizing process. Processing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55165884A JPS5828323B2 (en) | 1980-11-27 | 1980-11-27 | Processing method for iron-containing sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55165884A JPS5828323B2 (en) | 1980-11-27 | 1980-11-27 | Processing method for iron-containing sludge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5792106A JPS5792106A (en) | 1982-06-08 |
| JPS5828323B2 true JPS5828323B2 (en) | 1983-06-15 |
Family
ID=15820802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55165884A Expired JPS5828323B2 (en) | 1980-11-27 | 1980-11-27 | Processing method for iron-containing sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5828323B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6091144A (en) * | 1983-10-25 | 1985-05-22 | Matsushita Electric Ind Co Ltd | High frequency heater |
| JPH02123033U (en) * | 1989-03-22 | 1990-10-09 |
-
1980
- 1980-11-27 JP JP55165884A patent/JPS5828323B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6091144A (en) * | 1983-10-25 | 1985-05-22 | Matsushita Electric Ind Co Ltd | High frequency heater |
| JPH02123033U (en) * | 1989-03-22 | 1990-10-09 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5792106A (en) | 1982-06-08 |
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