JPS62290833A - Carbonaceous material-containing non-calcined briquette - Google Patents
Carbonaceous material-containing non-calcined briquetteInfo
- Publication number
- JPS62290833A JPS62290833A JP13220286A JP13220286A JPS62290833A JP S62290833 A JPS62290833 A JP S62290833A JP 13220286 A JP13220286 A JP 13220286A JP 13220286 A JP13220286 A JP 13220286A JP S62290833 A JPS62290833 A JP S62290833A
- Authority
- JP
- Japan
- Prior art keywords
- briquette
- carbonaceous material
- strength
- porosity
- compd
- 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
- 239000004484 Briquette Substances 0.000 title claims abstract description 23
- 239000003575 carbonaceous material Substances 0.000 title claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 28
- 229910052742 iron Inorganic materials 0.000 abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052799 carbon Inorganic materials 0.000 abstract description 8
- 239000011230 binding agent Substances 0.000 abstract description 7
- 238000000465 moulding Methods 0.000 abstract description 7
- 239000004568 cement Substances 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract description 4
- 235000011941 Tilia x europaea Nutrition 0.000 abstract description 4
- 229910052595 hematite Inorganic materials 0.000 abstract description 4
- 239000011019 hematite Substances 0.000 abstract description 4
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 abstract description 4
- 239000004571 lime Substances 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 4
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 abstract description 3
- 238000004898 kneading Methods 0.000 abstract description 3
- 239000000843 powder Substances 0.000 abstract description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 2
- 239000003245 coal Substances 0.000 abstract description 2
- 229910052717 sulfur Inorganic materials 0.000 abstract description 2
- 239000011593 sulfur Substances 0.000 abstract description 2
- 235000011437 Amygdalus communis Nutrition 0.000 abstract 1
- 241000220304 Prunus dulcis Species 0.000 abstract 1
- 235000020224 almond Nutrition 0.000 abstract 1
- 239000000571 coke Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 17
- 239000008188 pellet Substances 0.000 description 17
- 239000002245 particle Substances 0.000 description 6
- 238000003723 Smelting Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 238000001723 curing Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 3
- 239000003830 anthracite Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
「産業上の利用分野］
本発明は炭材内装非焼成ブリケットに関し、さらに詳し
くは、鉄、クロム、マンガン等の金属鉱石から鉄、クロ
ム、マンガン等の金属を還元製錬する場合に使用する炭
材内装非焼成ブリケットに関する。Detailed Description of the Invention 3. Detailed Description of the Invention "Field of Industrial Application" The present invention relates to a carbonaceous interior non-fired briquette, and more specifically, it relates to a non-fired briquette with a carbonaceous interior, and more specifically, it is made from metal ores such as iron, chromium, manganese, etc. This invention relates to a non-fired briquette with a carbonaceous interior used in the reduction smelting of metals such as manganese.
５従来技術］
一般的に、鉄鉱石の還元ブＣ：セスと１−で現在実５［
）１化されているしのとして、旨炉法、Ｄｆｌ法（直接
ノス元法また：よ、４１元鉄製浩ｌ去）があり、開発中
の主なものとして、溶融還元製鉄法がある。5 Prior Art] In general, iron ore reduction process C: Seth and 1- are currently used to reduce iron ore to 5[
) Examples of methods that have been unified include the iron furnace method and the Dfl method (also known as the direct nosing method), and the main method currently under development is the smelting reduction method.
このような方法において使［［］５れる原料鉱石：よ、
高炉の場合は焼結鉱、ベレット、塊鉱石が使用され、直
接還元法の場合はベレット、塊鉱石が主として使用され
、溶融還元法の場合は粉鉱石をそのまま使用するか、あ
るいは、ベレットまたは塊鉱石が使用される場合がある
。The raw material ore used in this method:
In the case of a blast furnace, sintered ore, pellets, and lump ore are used; in the case of the direct reduction method, pellets and lump ore are mainly used; in the case of the smelting reduction method, fine ore is used as is, or pellets or lumps are used. Ore may be used.
これらの他に、高炉、直接還元用として非焼成ベレット
、炭材内装非焼成ベレットが一部で使用されているが、
これは製鉄所内で発生するダスト類の処理を幻象として
いる場合が多く、非焼成ベレット、炭材内装非焼成ベレ
ットが全鉄鉱石に占めろ割合は極めて少ない。In addition to these, unfired pellets and carbonaceous interior unfired pellets are used in some parts for blast furnaces and direct reduction.
This is often an illusion due to the processing of dust generated within steel mills, and unfired pellets and unfired pellets with carbonaceous material make up an extremely small proportion of total iron ore.
炭＋４内装ベレットまたはブリケットの開発Ｊ５ろいは
実用化の状況は次の通りである。The status of the development of charcoal + 4 interior pellets or briquettes and the practical application of J5 Roi is as follows.
印し、高炉用の炭材内装ベレットか開発５れて一部実用
化されているが、全鉄鉱石に占めろ割合は弾めて小さい
（鉄と鋼Ｖｏｌ ６７、Ｓ ｌ ０４、同Ｖｏｌ ６
９．５７８０、同Ｖｏｌ ７０ ５１０２およびＳ ８
２５）。また、直接ａ元法を対象として炭材内装非焼成
ベレットに関する病礎研究か実飄中て、５ろことか、鉄
とｆｆ、４Ｖｏｌ ６８ 、 Ｓ ２８、同Ｖｏｌ ６
９．５７６８、同Ｖｏｌ ７０．５８２４、同Ｖｏｌ
７２．Ｓ９７に記載されている。Although carbon-filled pellets for blast furnaces have been developed and partially put into practical use, their proportion in the total iron ore is extremely small (Tetsu to Hagane Vol. 67, Sl 04, Vol. 6).
9.5780, Vol 70 5102 and S 8
25). In addition, we have conducted fundamental research on unfired pellets with carbonaceous interior for the direct a method, 5th grade, iron and ff, Vol. 68, S. 28, Vol. 6.
9.5768, same Vol 70.5824, same Vol
72. It is described in S97.
また、海外では、ＭＴＵ−ＰＴＣ法等があり、このＭＴ
Ｕ−ＰＴＣ法はＭｉｃｈｉｇａｎ Ｔｅｃｈｎｏｌｏｇ
ｙＵｎｉＶｅｒＳｉｔｙとＰｅ１ｌｅｔ Ｔｅｃｈｎｏ
ｌｏｇｙ Ｃｏｒｐ、が開発中のものであり、炭材内装
非焼成ベレットを高炉、キュポラ、直接３元用として供
給するものである。In addition, overseas, there are MTU-PTC laws, etc., and this MT
The U-PTC method is developed by Michigan Technology
yUniVerSity and Pe1let Techno
This project is being developed by Logy Corp. and will supply unfired pellets with carbonaceous interior for use in blast furnaces, cupolas, and direct ternary applications.
本発明者は先に重質油の熱分解プロセスと組合わせた方
法による炭材内装非焼成ベレット、炭材内装非焼成ブリ
ケットを開発し、また、炭材内装非焼成ブリケットを５
００℃以下の低温で硬化させる方法および炭材内装非焼
成ブリケットの製造方法について既に出願を完了してい
る。The present inventor has previously developed a carbon-based non-fired pellet and a carbon-based non-fired briquette by combining a heavy oil pyrolysis process, and also developed a carbon-based non-fired briquette.
Applications have already been filed for a method for curing at a low temperature of 00° C. or lower and a method for producing non-fired briquettes with carbon material interior.
炭材内装非焼成ベレットおよび炭材内装非焼成ブリケッ
トは、これ以外の鉄鉱石類に比較して還元速度が著しく
速いという利点があるが、問題も多く未だ本格的な実用
化がなされていない。この問題点の一つとして炭材内装
非焼成ベレットまたはブリケットは還元時の気孔率（空
隙率）が著しく高く、従って、還元時の強度が昔しく低
下することが挙げられる。そして、従来においては気孔
率を調整するという技術は開発されていない。Unfired pellets with carbonaceous material and unfired briquettes with carbonaceous material have the advantage of a significantly faster reduction rate than other iron ores, but they have many problems and have not yet been put into practical use. One of the problems is that unfired pellets or briquettes containing carbonaceous material have a significantly high porosity (porosity) during reduction, and therefore, their strength during reduction deteriorates over time. Conventionally, no technology for adjusting porosity has been developed.
なお、クロム、マンガンとうの製錬方法は、高炉等シャ
フト炉やロータリーキルンを使用する場合には、鉄鉱石
の技術の応用が可能であり、炭材内装非焼成ベレットお
よびブリケットを使用することができる。In addition, when using a shaft furnace such as a blast furnace or a rotary kiln, the smelting method for chromium and manganese can be applied to iron ore technology, and unfired pellets and briquettes with carbonaceous material can be used. .
［発明が解決しようとする問題点コ
本発明は上記に説明したような炭材内装非焼成ベレット
およびブリケットの多くの研究、または、従来使用され
ていた炭材内装非焼成ベレットおよびブリケットの問題
点に鑑み、本発明者が鋭き研究を行い、検討を重ねた結
果、事前処理鉱の一つである炭材内装非焼成ブリケット
の還元時の強度低下を軽減し、高炉等で要求される品質
の向上を図ることができる炭材内装非焼成ブリケットを
開発したのである。[Problems to be Solved by the Invention] The present invention is based on many studies on carbon-incorporated non-fired pellets and briquettes as explained above, or the problems of conventionally used carbon-incorporated non-fired pellets and briquettes. In view of this, the present inventor has conducted in-depth research and as a result of repeated consideration, it has been possible to reduce the strength loss during reduction of unfired briquettes with a carbonaceous interior, which is one of the pre-treated ores, and to achieve the quality required for blast furnaces, etc. We have developed a non-fired briquette with a carbonaceous interior that can improve the performance.
［問題点を解決するための手段］
本発明に係る炭材内装非焼成ブリケットの特徴とすると
ころは、金属鉱石に炭材が内装されている非焼成ブリケ
ットの成形、乾燥後の空隙率が１５〜２５％であること
にある。[Means for Solving the Problems] The feature of the non-fired briquette with carbonaceous material according to the present invention is that the porosity after forming and drying the non-fired briquette in which carbonaceous material is embedded in metal ore is 15. ~25%.
本発明に係る炭材内装非焼成ブリケットについて以下詳
細に説明する。The carbonaceous interior unfired briquette according to the present invention will be described in detail below.
金属鉱石としての鉄鉱石は、赤鉄鉱、磁鉄鉱、磁鉄鉱が
使用され、また、炭材は通常使用されている粉コークス
、石炭等で極力炭素量が多く、かつ、硫黄等の有害成分
の少ないしのが好ましい。The iron ore used as a metal ore is hematite, magnetite, and magnetite, and the carbonaceous material is commonly used coke powder, coal, etc., which has as much carbon as possible and has little harmful components such as sulfur. is preferable.
鉄鉱石および炭材は粉状のものを使用するが、一部粒度
の粗いしのが含まれる場合は適当な粉砕機により粉砕し
て使用するか、目標粒度は京料性状や製造工程によって
異なり、例えば、３２５メソンユ（４・１μｍ）より細
かいらのの割合が２０〜７０％、最大粒度が１〜２ｍｍ
とする。Iron ore and carbonaceous materials are used in powder form, but if they contain coarse particles, they must be crushed using an appropriate crusher, or the target particle size will vary depending on the properties of the material and the manufacturing process. For example, the proportion of particles finer than 325 mesonyu (4.1 μm) is 20 to 70%, and the maximum particle size is 1 to 2 mm.
shall be.
このように、粒塵調整された鉄鉱石および炭材を所定の
割合に配合し、さらに、バインダーおよび水分を添加し
て充分に混合・混練を行う。この時の炭材の配合割合は
炭素量換算で５〜１５％と＋Ａ−
ま１こ、バインダーとしては石灰系のセメント（ポルト
ランドセメント）が最ら一般的であるが、その他、各種
の樹脂等有機化合物を使用することも可能であり、いず
れの場合ら還元工程における有害成分の少ないことが好
ましく、石灰系セメントの場合、石膏含有量の少ないこ
とが望ましい。そして、バインダーおよび水分の添加量
は使用するバインダーや製造条件によって異なるが、石
灰系セメントの場合５％前後、水分添加量は４〜６％が
適正範囲である。In this way, the iron ore and the carbonaceous material whose particle dust has been adjusted are blended in a predetermined ratio, and then a binder and water are added and thoroughly mixed and kneaded. The blending ratio of carbonaceous material at this time is 5 to 15% in terms of carbon content.The most common binder is lime-based cement (Portland cement), but there are also various resins, etc. It is also possible to use organic compounds; in each case it is preferred that there be a low content of harmful components in the reduction step, and in the case of lime-based cements, a low gypsum content is desirable. The amount of binder and water added varies depending on the binder used and manufacturing conditions, but in the case of lime-based cement, the appropriate range is around 5%, and the amount of water added is 4 to 6%.
混合・混練装置は、ロール型、ダブルスパイラル型、回
転羽根型環一般的な装置でよい。The mixing/kneading device may be a roll type, double spiral type, or rotating vane type device.
次いて、混合・混練された原料は、成形工程に送られ、
ダブルロール型ブリケット製造機によりブリケットを製
造する。製造されたブリケットの形状は枕形またはアー
モンド型が最も好ましく、容積は３〜ｌ０ｃｃＩ）＜適
当である。Next, the mixed and kneaded raw materials are sent to the molding process,
Briquettes are manufactured using a double roll briquette making machine. The shape of the produced briquettes is most preferably pillow-shaped or almond-shaped, and the volume is suitably 3 to 10 ccI).
成形されたブリケットの性状は落下強度、下漬強度等の
必要な強度を保持させろと共に乾燥状態における空隙率
を１５〜２５％に調整する。The properties of the formed briquettes are adjusted to maintain necessary strengths such as drop strength and submerged strength, and to adjust the porosity in the dry state to 15 to 25%.
空隙率を１５〜２５％とするのは、ブリケットの還元さ
れた状態におけろ強、度低下を極力抑えるのに空隙率を
小さくすることが有効であり、一方、被還元性を確保す
るためにはある程度高くする必要があり、この両者を満
足ずろ範囲として空隙率は１５〜２５％の範囲が適正で
ある。The reason for setting the porosity to 15 to 25% is that it is effective to reduce the porosity in order to minimize the decrease in strength and strength of the briquettes in the reduced state, and on the other hand, to ensure reducibility. It is necessary to increase the porosity to some extent, and assuming that both of these conditions are satisfied, the appropriate porosity is in the range of 15 to 25%.
しかして、一般的に鉄鉱石は還元されると酸素が除去さ
れて空隙率が増大ずろが、炭材内装非焼成ブリケットの
場合はバインダーや一部の炭材が揮発、反応によって除
かれるため還元による空隙率の増大が特に著しく、その
ために強度か大幅に低下するという問題がある。そして
、還元された状態での空隙率増大を最小限に抑えるため
、成形後の空隙率を低くすることが有効である。Generally, when iron ore is reduced, oxygen is removed and the porosity increases, but in the case of unfired briquettes with carbonaceous material, the binder and some of the carbonaceous material are volatilized and removed by reaction, so the porosity increases. There is a problem in that the increase in porosity due to porosity is particularly significant, resulting in a significant decrease in strength. In order to minimize the increase in porosity in the reduced state, it is effective to lower the porosity after molding.
この空隙率は原料鉱石や炭材の性状、粒度および水分添
加量によって変化するが、ブリケット製造機の運転条件
によって調節することが可能であり、運転条件としては
ロール圧、ロール間隙、ロール回転速度と原料供給速度
の比等が影響し、特に、ロール圧の影響が大きい。This porosity varies depending on the properties of the raw material ore and carbon material, particle size, and amount of water added, but it can be adjusted by the operating conditions of the briquette making machine, and the operating conditions include roll pressure, roll gap, and roll rotation speed. The ratio of the raw material supply speed and the raw material supply rate, etc. have an influence, and the influence of the roll pressure is particularly large.
このようにして製造された炭材内装非焼成ブリケットは
、適当な養生により硬化させた後、高炉、直接還元炉等
の還元装置で使用する。養生方法としては大気中に放置
するか、また、急速便化が必要な場合は温度（約１００
°Ｃ）、湿度を調節して行う。The thus produced unfired briquettes containing carbonaceous material are hardened by appropriate curing and then used in a reduction device such as a blast furnace or a direct reduction furnace. The curing method is to leave it in the air, or if rapid faecalization is required, at a temperature (approximately 100℃).
°C) and humidity.
［実 施 例］
本発明に係る炭材内装非焼成ブリケットの実施例を説明
する。[Example] An example of the carbon-based non-fired briquette according to the present invention will be described.
実施例
第１表に示す赤鉄鉱と磁選精鉱を６：４の割合で配合し
、炭材として無煙炭を１０％、バインダーとして早強セ
メントを５％添加し、水分を５５％に調節して、ロール
ミキサーで充分に混合・混練してからダブルロール型の
ブリケット製造機によりブリケットを製造した。Example: The hematite and magnetic concentrate shown in Table 1 were mixed in a ratio of 6:4, 10% anthracite was added as a carbon material, 5% early strength cement was added as a binder, and the moisture content was adjusted to 55%. After thorough mixing and kneading using a roll mixer, briquettes were produced using a double roll type briquette making machine.
無煙炭はＣ＝８１％、揮発分−６％（ｄｂ）であり、粒
度は赤鉄鉱、−＝１４μｍ−６０％、磁選精鉱；−４・
１μｍ−８０％、無煙炭； ］ ｍｍ以下である。Anthracite has C=81%, volatile content -6% (db), particle size is hematite, -=14 μm -60%, magnetic concentrate; -4.
1 μm-80%, anthracite; ] mm or less.
ブリケット形状は枕形、サイズ（容積）は５５ＣＣ，ブ
リケット製造時のロール圧は１００〜２００ Ｋｇ／ｃ
ｍ”である。The briquette shape is pillow-shaped, the size (volume) is 55CC, and the roll pressure during briquette production is 100-200 Kg/c
m”.
成形直後に１０５±５℃の温度で約１０時間乾燥後、ブ
リケットの見掛比重を水銀法により測定し、微粉砕した
ちのをピクノメーター法により真比重を測定し、この両
者から次式により空隙率を求めた。Immediately after molding, after drying at a temperature of 105±5°C for about 10 hours, the apparent specific gravity of the briquettes was measured by the mercury method, and the true specific gravity of the finely ground briquettes was measured by the pycnometer method. The porosity was determined.
空隙率（％）
−（真比重−見掛比重）ｘｌ、００／真比重また、製造
されたブリケットを大気中で２０日間の養生後１．Ｊ
Ｉ Ｓ還元試験および高温還元試験をおこない高温Ｃ元
試験後ブリケットの空隙率および圧潰強度を測定し１こ
。Porosity (%) - (true specific gravity - apparent specific gravity) xl, 00/true specific gravity Also, after curing the manufactured briquettes in the atmosphere for 20 days, J
An IS reduction test and a high temperature reduction test were conducted, and the porosity and crushing strength of the briquettes were measured after the high temperature C original test.
高温還元試験は００３０％、Ｎ７０％のガス雰囲気中で
１０℃／ｍｉｎの加熱速度て昇温し、１１００°Ｃの温
度て３０分間保持ずろことにより行っｆこ。The high-temperature reduction test was carried out by raising the temperature at a heating rate of 10°C/min in a gas atmosphere of 0030% and 70% N, and holding the temperature at 1100°C for 30 minutes.
以」−のｆスリ定結果について、成形後乾燥状態の空隙
率と高温還元後の空隙率、王ｈｉ強度およびＪＩＱ ：
’５−ｒｃ：ｖｑｌ’Ａ（Ｅ、／、、’９１ Ｍ＋、
−壬−ｉ−この第１図から成形後乾燥状態の空隙率が増
大するのに伴って、高温還元後の空隙率が増大して圧潰
強度が低下し、一方、ＪＩＳ還元率は」二昇することか
わかる。Regarding the results of f-sliding, the porosity in the dry state after molding, the porosity after high-temperature reduction, hi strength and JIQ:
'5-rc:vql'A(E, /,,'91 M+,
-壬-i- This figure 1 shows that as the porosity in the dry state after molding increases, the porosity after high-temperature reduction increases and the crushing strength decreases, while the JIS reduction rate increases I know what to do.
第１表
［発明の効果］
以上説明したように、本発明に係る炭材内装非焼成ブリ
ケットは上記の構成であるから、還元時の強度低下を抑
制することができ、そして、高炉における還元製錬に炭
材内装非焼成ブリケットの使用が可能となり、従って、
高炉の還元製錬における生産性を向上させることができ
、さらに、燃料費の低減を図ることができろという効果
がある。Table 1 [Effects of the Invention] As explained above, since the carbonaceous interior non-fired briquette according to the present invention has the above structure, it is possible to suppress a decrease in strength during reduction, and it is possible to suppress reduction in strength during reduction. It is now possible to use unfired briquettes with a charcoal interior for refining, and therefore,
This has the effect of improving productivity in blast furnace reduction smelting and further reducing fuel costs.
第１図は成形後乾燥状態の空隙率と還元後空隙率、還元
後圧潰強度およびＪＩＳ還元率との関係を示す図である
。FIG. 1 is a diagram showing the relationship between the porosity in a dry state after molding, the porosity after reduction, the crushing strength after reduction, and the JIS reduction rate.
Claims (1)
形、乾燥後の空隙率が１５〜２５％であることを特徴と
する炭材内装非焼成ブリケット。A non-fired briquette with carbon material embedded in a metal ore, which has a porosity of 15 to 25% after being molded and dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13220286A JPS62290833A (en) | 1986-06-07 | 1986-06-07 | Carbonaceous material-containing non-calcined briquette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13220286A JPS62290833A (en) | 1986-06-07 | 1986-06-07 | Carbonaceous material-containing non-calcined briquette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62290833A true JPS62290833A (en) | 1987-12-17 |
Family
ID=15075781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13220286A Pending JPS62290833A (en) | 1986-06-07 | 1986-06-07 | Carbonaceous material-containing non-calcined briquette |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62290833A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1423545A1 (en) * | 2001-08-02 | 2004-06-02 | Commonwealth Scientific And Industrial Research Organisation | Iron ore briquetting |
| JP2008260982A (en) * | 2007-04-10 | 2008-10-30 | Kobe Steel Ltd | Method for manufacturing carbonaceous-material-containing metal oxide briquette |
| WO2009037943A1 (en) * | 2007-09-18 | 2009-03-26 | Kabushiki Kaisha Kobe Seiko Sho | Method for producing briquette with carbonaceous material incorporated therein by use of oil-containing iron-making plant dust |
| JP2014055788A (en) * | 2012-09-11 | 2014-03-27 | Nippon Steel & Sumitomo Metal | Evaluation method for briquette moldability, and briquette manufacturing method based thereon |
-
1986
- 1986-06-07 JP JP13220286A patent/JPS62290833A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1423545A1 (en) * | 2001-08-02 | 2004-06-02 | Commonwealth Scientific And Industrial Research Organisation | Iron ore briquetting |
| EP1425427A1 (en) * | 2001-08-02 | 2004-06-09 | Commonwealth Scientific And Industrial Research Organisation | Iron ore briquetting |
| EP1425427A4 (en) * | 2001-08-02 | 2004-08-18 | Commw Scient Andindustrial Res | Iron ore briquetting |
| EP1423545A4 (en) * | 2001-08-02 | 2004-08-18 | Commw Scient Andindustrial Res | Iron ore briquetting |
| AU2002322154B2 (en) * | 2001-08-02 | 2008-01-31 | Commonwealth Scientific And Industrial Research Organisation | Iron ore briquetting |
| JP2008260982A (en) * | 2007-04-10 | 2008-10-30 | Kobe Steel Ltd | Method for manufacturing carbonaceous-material-containing metal oxide briquette |
| WO2009037943A1 (en) * | 2007-09-18 | 2009-03-26 | Kabushiki Kaisha Kobe Seiko Sho | Method for producing briquette with carbonaceous material incorporated therein by use of oil-containing iron-making plant dust |
| JP2009074105A (en) * | 2007-09-18 | 2009-04-09 | Kobe Steel Ltd | Method for manufacturing carbonaceous-material-containing briquette by using oil-containing dust in ironworks |
| AU2008301824B2 (en) * | 2007-09-18 | 2011-03-03 | Kabushiki Kaisha Kobe Seiko Sho | Method for producing briquette with carbonaceous material incorporated therein by use of oil-containing iron-making plant dust |
| US8439987B2 (en) | 2007-09-18 | 2013-05-14 | Kobe Steel, Ltd. | Method of producing carbonaceous material-containing briquettes using steel mill dust containing oil |
| JP2014055788A (en) * | 2012-09-11 | 2014-03-27 | Nippon Steel & Sumitomo Metal | Evaluation method for briquette moldability, and briquette manufacturing method based thereon |
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