JPH0377258B2 - - Google Patents
Info
- Publication number
- JPH0377258B2 JPH0377258B2 JP29439285A JP29439285A JPH0377258B2 JP H0377258 B2 JPH0377258 B2 JP H0377258B2 JP 29439285 A JP29439285 A JP 29439285A JP 29439285 A JP29439285 A JP 29439285A JP H0377258 B2 JPH0377258 B2 JP H0377258B2
- Authority
- JP
- Japan
- Prior art keywords
- iron
- dust
- agglomerated
- converter
- mold
- 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 - Lifetime
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 64
- 239000000428 dust Substances 0.000 claims description 32
- 229910052742 iron Inorganic materials 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 13
- 239000011230 binding agent Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 229910001868 water Inorganic materials 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 9
- 238000005054 agglomeration Methods 0.000 claims description 5
- 230000002776 aggregation Effects 0.000 claims description 5
- 239000013535 sea water Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- 239000002994 raw material Substances 0.000 description 11
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 8
- 238000005805 hydroxylation reaction Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910000278 bentonite Inorganic materials 0.000 description 2
- 239000000440 bentonite Substances 0.000 description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910052595 hematite Inorganic materials 0.000 description 1
- 239000011019 hematite Substances 0.000 description 1
- 235000014413 iron hydroxide Nutrition 0.000 description 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000009628 steelmaking 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
- 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
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、転炉操業過程で発生する転炉集塵ダ
ストをバインダーとして使用する鉄原料等の塊成
化方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for agglomerating iron raw materials, etc., using converter dust collected during the converter operation process as a binder.
高炉においては、鉄の原料としては、適当の大
きさの赤鉄鉱、褐鉄鉱あるいは磁鉄鉱等の原料が
使用されているが、これらの鉄原料が一定の大き
さ以下（例えば、粉体）になつている場合は、適
当な大きさに塊成化して高炉に供給する必要があ
つた。
In blast furnaces, raw materials such as hematite, limonite, or magnetite of appropriate size are used as raw materials for iron, but when these iron raw materials become smaller than a certain size (for example, powder), If so, it was necessary to agglomerate it into an appropriate size and feed it to the blast furnace.
この塊成化する方法としては、従来、焼結によ
つていたり、あるいは主体がセメントからなるも
の、ベントナイトあるいは樹脂等のバインダーを
所定量鉄鉱原料等の被塊成化物に混合することに
よつて、被塊成化物を塊成化していた。 Conventionally, this agglomeration method has been based on sintering, or by mixing a predetermined amount of a binder such as cement, bentonite, or resin into the material to be agglomerated, such as iron ore raw material. Then, the material to be agglomerated was agglomerated.
〔発明が解決しようとする問題点〕
ところが、焼結によつて塊成化する場合、原料
を焼くので、NOxが発生したり、場合によつて
はSOx等の有害なガスが発生し、公害源となる場
合があるという問題点があつた。[Problems to be solved by the invention] However, when agglomerating through sintering, the raw materials are burned, which may generate NO x or, in some cases, harmful gases such as SO x . However, there was a problem that it could become a source of pollution.
また、主体がセメントからなるもの、ベントナ
イトあるいは樹脂等のバインダーを使用する場合
には、別にバインダーが必要であるので、コスト
高になつたり、あるいは鉄鉱原料中に不用な材料
が混入する場合があるという問題点があつた。 In addition, if the main component is cement, or if a binder such as bentonite or resin is used, a separate binder is required, which may increase costs or cause unnecessary materials to be mixed into the iron ore raw material. There was a problem.
一方、転炉操業過程で発生する転炉集塵ダスト
（粗粒ダストも含む）の成分は鉄及び酸化鉄が主
成分であるが、塊成化して製鋼原料として使用さ
れているのが殆どで、比較的利用価値が低いもの
となつていた。 On the other hand, the main components of converter dust (including coarse dust) generated during the converter operation process are iron and iron oxide, but most of it is agglomerated and used as raw material for steelmaking. , its utility value was relatively low.
本発明はこのような事情に鑑みてなされたもの
で、大気汚染の問題を生ぜず、しかもバインダー
原料として容易に入手できてコストが安く、更に
は鉄源としても利用できる転炉集塵ダストをバイ
ンダーとした塊成化方法を提供することを目的と
する。 The present invention has been made in view of these circumstances, and provides a method for converter dust that does not cause air pollution problems, is easily available as a binder raw material, is inexpensive, and can also be used as a source of iron. The object of the present invention is to provide a method for agglomerating the present invention into a binder.
上記目的に沿う本考案に係る転炉集塵ダストを
バインダーとした塊成化方法は、所定量の転炉集
塵ダストを鉄鉱石粉、スケール、微粉鉄あるいは
他のダストからなる被塊成化物に小量の水あるい
は海水を入れて混合し型内に入れて加圧成形した
後、養生させることによつて塊成化するようにし
て構成されている。
The agglomeration method using converter dust collected as a binder according to the present invention in accordance with the above-mentioned purpose is to convert a predetermined amount of converter dust collected into an agglomerated material consisting of iron ore powder, scale, fine iron, or other dust. It is constructed so that a small amount of water or seawater is added and mixed, put into a mold, pressure-molded, and then agglomerated by curing.
ここに、鉄鉱石粉及び微粉鉄には鉄鉱石粒及び
微粉鉄粒を含む概念であり、養生とは塊成化物を
放置し、空気中の水分あるいは酸素によつて鉄あ
るいは酸化鉄に水酸化反応あるいは酸化反応を起
こさせて固まらせることをいう。 Here, the concept of iron ore powder and fine iron includes iron ore grains and fine iron grains, and curing is a concept in which the agglomerated material is left to undergo a hydroxylation reaction into iron or iron oxide by moisture or oxygen in the air. Alternatively, it refers to causing an oxidation reaction to cause solidification.
また所定量の転炉操業集塵ダストには粗粒ダス
トも含まれ、該転炉集塵ダストをバインダーとし
て使用できる範囲であればその量は幾らでも良い
が、被塊成化物に対して１〜10％であるのが好ま
しい。 In addition, the predetermined amount of dust collected during converter operation also includes coarse grain dust, and the amount may be any amount as long as the collected dust of converter furnace can be used as a binder, but Preferably it is ~10%.
そして、型内にいれて成形加圧するとは、必ず
しも一定の雌型内に入れた後、上から雄型で押し
て加圧成形する場合のみをいうのではなく、例え
ば、対向する穴付ローラに原料を供給してローラ
圧にて押圧成形するもの（例えば、ブリケツトマ
シーン）も含むものである。 Putting it in a mold and pressurizing it does not necessarily mean putting it in a certain female mold and pressing it from above with a male mold to pressurize it. It also includes machines that supply raw materials and press-form them using roller pressure (for example, briquetting machines).
転炉集塵ダスト、鉄分及び酸化鉄を主成分と
し、これを鉄鉱石粉、スケール、微粉鉄あるいは
他のダストからなる被塊成化物に小量の水または
海水と共に加え混合することによつて鉄分及び水
分を被塊成化物中に略均等に介在させている。
Converter dust, iron and iron oxide are the main components, and by adding this to the agglomerated material consisting of iron ore powder, scale, fine iron or other dust with a small amount of water or seawater and mixing it, iron content can be obtained. and water are almost evenly distributed in the agglomerated material.
次に、該転炉集塵ダスト等の混合した塊成化物
を所定の型に入れて圧縮することによつて被塊成
化物と鉄分及び水分との接触を密にし、養生する
ことによつて、鉄分、水及び空気中の酸素が化合
して酸化鉄あるいは水酸化鉄となり、被塊成化物
と共に固まり強固な塊成化物となる。 Next, the mixed agglomerated material such as the converter dust is put into a predetermined mold and compressed to bring the agglomerated material into close contact with iron and moisture, and then cured. , iron, water, and oxygen in the air combine to form iron oxide or iron hydroxide, which solidifies with the material to be agglomerated to form a strong agglomerated product.
続いて、本発明を具体化した一実施例につき説
明し、本発明の理解に供する。
Next, an example embodying the present invention will be described to provide an understanding of the present invention.
まず、転炉操業過程で発生する転炉集塵ダスト
を、鉄鉱石粉、スケール、微粉鉄あるいは他のダ
ストからなる被塊成化物に加えてミキサー等で撹
拌混合する。 First, the converter dust collected during the converter operation process is added to the agglomerated material consisting of iron ore powder, scale, fine iron, or other dust, and is stirred and mixed with a mixer or the like.
この場合、上記転炉集塵ダストには粗粒ダスト
を含んでいても良く、また鉄鉱石粉、スケール、
微粉鉄あるいは他のダストからなる被塊成化物
（通常、粉体あるいは粒体からなる）に対し、上
記転炉集塵ダストを１〜10％の割合で混合してお
く。なお、ここでメタリツクFeを主成分とする
転炉集塵ダストは、多過ぎるとひび割れ等を生じ
ることになる。 In this case, the above-mentioned converter dust collected may contain coarse grain dust, and iron ore powder, scale,
The above-mentioned converter collected dust is mixed in a ratio of 1 to 10% with the material to be agglomerated (usually consisting of powder or granules) consisting of fine iron powder or other dust. It should be noted that if the converter dust containing metallic Fe as the main component is too large, it will cause cracks and the like.
これを、直径及び高さが10〜20mm程度の大きさ
の複数の円柱状のポケツトを有する金型（雌型）
の中に投入し、上部から該金型に合う雄型にて加
圧し圧縮成形を行う。この加圧力は大きい程被塊
成化物が良く締まるので好ましいが、実施例にお
いては300Kg／cm2程度で行つた。 This is made into a mold (female mold) that has multiple cylindrical pockets with a diameter and height of about 10 to 20 mm.
The material is put into a mold, and compression molding is performed by applying pressure from above using a male mold that fits the mold. The higher the pressure, the better the compaction of the material to be agglomerated, so it is preferable, but in the examples, it was applied at about 300 kg/cm 2 .
次に、塊成化物をこの型から抜き、所定の容器
に入れて放置する。この場合、塊成化物に適当に
散水し、湿らせておき水酸化反応を促進すること
も可能である。 Next, the agglomerated product is removed from the mold, placed in a predetermined container, and left to stand. In this case, it is also possible to promote the hydroxylation reaction by appropriately sprinkling water on the agglomerated product to keep it moist.
この塊成化物を放置しておくと、水酸化反応の
ため発熱し温度が上昇するが、これによつて余分
な水分が蒸発することになる。 If this agglomerate is left to stand, the hydroxylation reaction generates heat and increases the temperature, which causes excess water to evaporate.
このような放置の状態を数時間から十数時間程
度保持することによつて、塊成化物は完全に固化
することになる。 The agglomerated product will be completely solidified by keeping it in this state for several hours to more than ten hours.
このようにして固化した塊成化物は、非常に硬
く（初期においては100Kg／cm2程度以上となり、
その後時間と共に増加する）、しかも700〜800℃
程度に加熱しても多少の強度は落ちるが、原形を
保持しえるものである。 The agglomerated material solidified in this way is extremely hard (approximately 100 kg/cm 2 or more in the initial stage,
(then increases with time), and 700 to 800℃
Although it loses some strength even if heated to a certain degree, it retains its original shape.
上記実施例においては被塊成化物として鉄鉱石
粉、スケール、微粉鉄あるいは他のダスを使用し
てこれを塊成化し高炉原料としたが、例えば、他
の非鉄金属の鉱石にも本発明は適用できるもので
ある。 In the above embodiments, iron ore powder, scale, pulverized iron, or other dust was used as the material to be agglomerated, and this was agglomerated and used as the raw material for the blast furnace. However, the present invention is also applicable to other non-ferrous metal ores, for example. It is possible.
なお、上記実施例においては、非塊成化物の成
形は一定の雌型の中に転炉集塵ダスト及び水の混
合された被塊成化物を投入して、該雌型に嵌合す
る雄型によつて押圧して加圧成形したが、大量に
成形する場合は、対向する穴付ローラに挟み込ん
で加圧成形することも可能である。 In the above embodiment, the non-agglomerated material is formed by charging the agglomerated material mixed with converter dust and water into a certain female mold, and then molding the non-agglomerated material into a male mold that fits into the female mold. Although pressure molding was carried out by pressing with a mold, if a large quantity is to be molded, it is also possible to press and mold by sandwiching it between opposing perforated rollers.
また、上記実施例においては加圧成形した塊成
化物に必要によつて水を散布することとしたが、
水の代わりに加熱水蒸気を吹きつけることも可能
であり、これによつて水酸化反応が更に促進され
ることになる。 In addition, in the above example, water was sprinkled on the pressure-formed agglomerated product as necessary.
It is also possible to spray heated steam instead of water, which will further accelerate the hydroxylation reaction.
本発明に係る転炉集塵ダストをバインダーとし
た塊成化方法は、以上の説明からも明らかなよう
に、鉄分の酸化反応あるいは水酸化反応を起こさ
せることによつて養生させているので、大気汚染
の問題を生じることがない。
As is clear from the above explanation, the agglomeration method using the converter dust collected as a binder according to the present invention cures the iron by causing an oxidation reaction or a hydroxylation reaction. It does not cause air pollution problems.
しかも、転炉操業過程で発生する転炉集塵ダス
トを使用しているので、コストの安い転炉集塵ダ
ストの有効利用が図られることになる。 Furthermore, since the converter dust collected during the converter operation process is used, the low-cost collected converter dust can be effectively utilized.
更にはその転炉集塵ダストはその主成分が鉄で
あるので、本願方法によつて製造された塊成化物
に不用な不純物が混入することはなく、しかも転
炉集塵ダストに含まれている鉄及びこの酸化物は
例えば高炉において還元されて鉄源として利用す
ることも可能となる。 Furthermore, since the main component of the converter dust is iron, unnecessary impurities will not be mixed into the agglomerates produced by the method of the present application, and moreover, the converter dust will not contain any unnecessary impurities. Iron and its oxides can be reduced in a blast furnace, for example, and used as an iron source.
Claims (1)
ル、微粉鉄あるいは他のダストからなる被塊成化
物に小量の水あるいは海水を入れて混合し型内に
入れて加圧成形した後、養生させることによつて
塊成化することを特徴とする転炉集塵ダストをバ
インダーとした塊成化方法。 ２ 所定量の転炉集塵ダストは、被塊成化物に対
して１〜10％である特許請求の範囲第１項記載の
転炉集塵ダストをバインダーとした塊成化方法。[Claims] 1. A predetermined amount of collected dust from a converter is mixed with a small amount of water or seawater into a material to be agglomerated consisting of iron ore powder, scale, fine iron, or other dust, and the mixture is placed in a mold. An agglomeration method using converter dust collected as a binder, which is characterized by agglomerating by curing after pressure forming. 2. The agglomeration method using converter dust as a binder according to claim 1, wherein the predetermined amount of converter dust is 1 to 10% of the material to be agglomerated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60294392A JPS62153153A (en) | 1985-12-26 | 1985-12-26 | Coagulating method using converter collected dust as binder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60294392A JPS62153153A (en) | 1985-12-26 | 1985-12-26 | Coagulating method using converter collected dust as binder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62153153A JPS62153153A (en) | 1987-07-08 |
| JPH0377258B2 true JPH0377258B2 (en) | 1991-12-10 |
Family
ID=17807138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60294392A Granted JPS62153153A (en) | 1985-12-26 | 1985-12-26 | Coagulating method using converter collected dust as binder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62153153A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4846913B2 (en) * | 2001-03-06 | 2011-12-28 | 株式会社東海理化電機製作所 | Shift device |
| JP2005187870A (en) * | 2003-12-25 | 2005-07-14 | Ntn Corp | Solidified steel making dust, and method and apparatus for manufacturing the same |
| JP2006104528A (en) * | 2004-10-06 | 2006-04-20 | Ntn Corp | Solidified material of steelmaking dust, and manufacturing method therefor |
| JP4885784B2 (en) * | 2007-04-09 | 2012-02-29 | 株式会社東海理化電機製作所 | Shift device |
| CN110342845B (en) * | 2019-06-19 | 2022-02-18 | 张晓夫 | Method for manufacturing sand by using iron tailing slag |
-
1985
- 1985-12-26 JP JP60294392A patent/JPS62153153A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62153153A (en) | 1987-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4105457A (en) | Briquet and method of making same | |
| RU2093592C1 (en) | Method of manufacturing cold-pressed briquets from iron-containing metallurgy wastes | |
| AU2009291046B2 (en) | Process for producing agglomerates of finely particulate iron carriers | |
| US6921427B2 (en) | Process for cold briquetting and pelletization of ferrous or non-ferrous ores or mineral fines by iron bearing hydraulic mineral binder | |
| JP2006508251A (en) | Cold briquetting and cold pelletization of mineral fines using a hydraulic binder containing iron. | |
| JPH0377258B2 (en) | ||
| US3725032A (en) | Method for agglomerating ore concentrate and resultant product | |
| US3097945A (en) | Process of agglomerating fines of materials containing iron of which a portion has been completely reduced | |
| JPS55115930A (en) | Fine ore treating method for reduction shaft furnace | |
| US3825638A (en) | Method for producing cold bound agglomerates from particulate mineral concentrates | |
| JP2002241853A (en) | Non-burning agglomerate for blast furnace | |
| JPS55125240A (en) | Sintering method for finely powdered starting material for iron manufacture | |
| JPS5853054B2 (en) | Method for manufacturing non-fired agglomerate for iron manufacturing | |
| US4308055A (en) | Process of briquetting sponge iron-containing material | |
| JPS6256936B2 (en) | ||
| JPS5819729B2 (en) | Seikorohekiyoukiyuusuruni Textile Kiyoukakaijiyoutaino Seikomirhaikibutsudustkarano Seizouhou | |
| EP4001442A1 (en) | Method for bricketing dust captured in the desulphurisation and ladle furnace dust collection system | |
| JPS62290833A (en) | Carbonaceous material-containing non-calcined briquette | |
| CN116103492A (en) | Method for producing direct reduced iron by self-heating and airing of briquettes | |
| JPS60184642A (en) | Manufacture of unfired lump ore | |
| JP2627854B2 (en) | Method for producing unfired agglomerate | |
| JPH0213014B2 (en) | ||
| JPS629653B2 (en) | ||
| JPS60243235A (en) | Method for cold briquetting powdery starting material for iron manufacture | |
| JP3856943B2 (en) | Method for producing reduced iron |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |