JPH02270922A - Method for making briquette of carbon powder - Google Patents
Method for making briquette of carbon powderInfo
- Publication number
- JPH02270922A JPH02270922A JP1093390A JP9339089A JPH02270922A JP H02270922 A JPH02270922 A JP H02270922A JP 1093390 A JP1093390 A JP 1093390A JP 9339089 A JP9339089 A JP 9339089A JP H02270922 A JPH02270922 A JP H02270922A
- Authority
- JP
- Japan
- Prior art keywords
- carbon powder
- powder
- briquette
- charged
- binder
- 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims description 18
- 239000004484 Briquette Substances 0.000 title abstract description 9
- 229920002472 Starch Polymers 0.000 claims abstract description 12
- 239000008107 starch Substances 0.000 claims abstract description 12
- 235000019698 starch Nutrition 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000004898 kneading Methods 0.000 claims abstract 2
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 9
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 9
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 6
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 5
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 5
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 abstract description 16
- 239000000203 mixture Substances 0.000 abstract description 8
- 239000011230 binding agent Substances 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 5
- 238000009628 steelmaking Methods 0.000 abstract description 5
- 238000004880 explosion Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000003245 coal Substances 0.000 description 10
- 238000002474 experimental method Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 101150104619 FRE7 gene Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 235000014366 other mixer Nutrition 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、製鋼用に使用する炭素粉の製団方法に関する
。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for agglomerating carbon powder used for steel manufacturing.
製鋼過程においては、例えば、石炭粉、コークス粉、黒
鉛、電極粉等からなる炭素粉を所定の大きさの塊状に成
形して、昇温材、還元材、製鋼用加炭材として使用され
ている。In the steelmaking process, for example, carbon powder made of coal powder, coke powder, graphite, electrode powder, etc. is formed into a lump of a predetermined size and used as a heating agent, reducing agent, and carburizer for steelmaking. There is.
このような炭素粉を製団する場合、従来、粘結材として
澱粉を使用し、炭素粉に２重量％以上の澱粉を適当量の
水と共に加えて撹拌混練し、例えば、所定の孔が多数形
成されたローラーを対向させてなる成形装置（ブリケッ
トマシン）によって製団していた。When preparing such carbon powder, conventionally, starch is used as a caking agent, and 2% by weight or more of starch is added to the carbon powder together with an appropriate amount of water, and the mixture is stirred and kneaded to form a powder with a large number of predetermined pores. The briquettes were made using a forming device (briquetting machine) that had formed rollers facing each other.
〔発明が解決しようとする問題点］
ところが、従来の製団方法は上記ロールの成形圧力がロ
ール幅に対して約１． ｔ ／ｃ＋ｗと低く、比較的多
量の粘結材を必要とするので、本来の目的成分である炭
素の含有率が低下し、成形費用が高価となり、更には成
形強度も十分でなく、中には製鋼炉等に投入する過程で
、崩壊し歩留りや効率の低下が発生する。また、その微
粉物が集塵装置に溜り火事、あるいは引火して爆発の危
険があるという問題点があった。[Problems to be Solved by the Invention] However, in the conventional dough forming method, the forming pressure of the roll is approximately 1.0 mm with respect to the roll width. Since the t/c+w is low and a relatively large amount of caking agent is required, the content of carbon, which is the original target component, decreases, resulting in high molding costs.Furthermore, the molding strength is not sufficient, and the inside During the process of feeding it into a steelmaking furnace, etc., it disintegrates, resulting in a decrease in yield and efficiency. Further, there is a problem in that the fine powder may accumulate in the dust collector and cause a risk of fire or explosion due to ignition.
本発明はこのような事情に鑑みてなされたもので、少量
の粘結材を使用し、十分な強度を有する炭素粉の製団方
法を提供することを目的とする。The present invention was made in view of the above circumstances, and an object of the present invention is to provide a method for agglomerating carbon powder having sufficient strength using a small amount of caking agent.
上記目的に沿う請求の範囲第１項記載の炭素粉の製団方
法は、ｌｖｗ以下の粒度のものを３０％以上含む炭素粉
に、該炭素粉の０．５〜１．０重量％の範囲でポリビニ
ルアルコール、カルボキシルメチルセルロース、α澱粉
の一種または二種以上からなる粘結材を加え、含有水分
が１０％以下となるようにＵＲ湿して混練した後に高圧
成形し、乾燥するようにして構成されている。The method for making carbon powder according to claim 1, which meets the above object, includes carbon powder containing 30% or more of particles with a particle size of LVW or less, in a range of 0.5 to 1.0% by weight of the carbon powder. A binder consisting of one or more of polyvinyl alcohol, carboxymethyl cellulose, and alpha starch is added to the product, and the mixture is kneaded with UR so that the water content is 10% or less, then high-pressure molded and dried. has been done.
そして、請求の範囲第２項記載の炭素粉の製団方法は、
請求の範囲第１項記載の炭素粉の製団方法において、成
形圧力が、ロール幅に対して３ｔ／ｃｍ以上であるよう
に構成されている。The method for preparing carbon powder according to claim 2 is as follows:
In the method for making carbon powder according to claim 1, the compacting pressure is set to be 3 t/cm or more with respect to the width of the roll.
また、請求の範囲第３項記載の炭素粉の製団方法は、請
求の範囲第１項記載の炭素粉の製団方法において、乾燥
装置がバンドドライヤーであって、製団された炭素粉を
残留水分が３％以下まで乾燥するようにして構成されて
いる。Further, the method for agglomerating carbon powder according to claim 3 is the method for agglomerating carbon powder according to claim 1, wherein the drying device is a band dryer, and the agglomerated carbon powder is It is configured to dry to a residual moisture content of 3% or less.
請求の範囲第１項〜第３項記載の炭素粉の製団方法の作
用を６１認する為、以下の実験を行った。In order to confirm the effects of the carbon powder preparation method described in claims 1 to 3, the following experiment was conducted.
実験１
比較の為、］、ｍｓアンダーの粒度が大部分を占める石
炭粉を原料とし、該石炭粉の１重量％の澱粉を使用し、
適当に水を加えて全体の倉荷水量を調整し、該混合物を
混練機によって十分に混練し、しかる後ブリケントマシ
ンによって造粒したが、この場合加圧力はロール幅に対
してｉｔ／ｃｍ程度として、粒径約５Ｏｎ＋ｍ程度の粒
体を成形した。そして、この粒体を含有水分が３％以内
になるように乾燥してブリケントＩを製造した。Experiment 1 For comparison, coal powder with a particle size of below ms was used as the raw material, and 1% by weight of starch was used in the coal powder.
The total amount of water in the warehouse was adjusted by adding appropriate water, and the mixture was thoroughly kneaded using a kneader, and then granulated using a Brikent machine. As a result, granules having a particle size of approximately 5 On+m were molded. The granules were then dried to a moisture content of 3% or less to produce Briquent I.
実験２
次に、本発明方法によって上記実験１と同一の粒径のブ
リケット■を製造した。この場合に、粘結材には、石炭
粉の０．５重量％のα澱粉と、０．３重量％のポリビニ
ルアルコールとを使用し、含有水分が１０％以内になる
ように水分調整を行って混練し、この後ブリケントマシ
ンで成形したが、該ブリケットマシンの加圧力はロール
幅に対して４ｔ／ｃｍ程度であり、この後含有水分が３
％以内となるように乾燥した。Experiment 2 Next, briquettes (2) having the same particle size as in Experiment 1 were produced by the method of the present invention. In this case, 0.5% by weight of alpha starch from coal powder and 0.3% by weight of polyvinyl alcohol are used as the caking agent, and the moisture content is adjusted so that the moisture content is within 10%. The briquette machine was used to knead the briquettes and then form the briquettes using a briquette machine.
% or less.
実験３
ここで、上記ポリビニルアルコールの代わりにカルボキ
シルメチルセルロースを粘結材として使用し、上記実験
２と同様な条件で高圧成形し、乾燥してブリケット■を
製造した。Experiment 3 Here, instead of the above-mentioned polyvinyl alcohol, carboxymethyl cellulose was used as a caking agent, and the briquettes were molded under high pressure under the same conditions as in the above-mentioned Experiment 2, and dried to produce briquettes (2).
実験４
また、粘結材として０．３重量％のα澱粉と、０゜３重
世％のポリビニルアルコールと、０．１重量％のカルボ
キシルメチルセルロースとを使用して、上記実験２と同
様な条件でブリケット■を製造した。Experiment 4 In addition, the same conditions as in Experiment 2 were conducted using 0.3% by weight of α-starch, 0.3% by weight of polyvinyl alcohol, and 0.1% by weight of carboxymethylcellulose as the binding agent. Briquettes ■ were produced.
上記ブリケット１〜■の強度を比較する為、圧縮強度試
験及び落下強度試験を行った。この結果を第１表に示す
。In order to compare the strengths of the briquettes 1 to 1 above, a compressive strength test and a drop strength test were conducted. The results are shown in Table 1.
第 １ 表
ここで、圧縮破壊強度とは、ブリケット１ケの圧縮破壊
に要する力をいい、落下強度とは２０ｋｇのサンプルを
３１１の高さから３０ｎｕｗＨの鉄板上に４回全量落下
させた後の１５＋ｕｉオーバーサイズの残存率をいう。Table 1 Here, compressive breaking strength refers to the force required to compressively break one briquette, and drop strength refers to the force required to break a briquette by compression, and drop strength refers to the force required to break a 20 kg sample four times from a height of 311 onto a 30 nuwH iron plate. It refers to the survival rate of 15+ui oversize.
上記試験の結果から、本発明方法による石炭粉の製団方
法によって製造されたブリケット■、■、■の方が、従
来法によって製造されたブリケット１より十分な強度を
有することが分かる。From the results of the above test, it can be seen that briquettes (1), (2), and (3) produced by the coal powder agglomeration method according to the present invention have sufficient strength than briquettes (1) produced by the conventional method.
なお、α澱粉、ポリビニルアルコール、カルボキシルメ
チルセルロースまたはこれらの混合物からなる粘結材は
、全体の量が炭素粉の０．５〜１．０重量％程度であれ
ば成形圧力はロール幅に対し３ｔ／ａｍ近傍の圧力で使
用に耐える十分な強度を有するが、粘結材の量がこれよ
り減少すれば、これより十分高い成形圧力を必要とする
。In addition, if the total amount of the binder made of α-starch, polyvinyl alcohol, carboxymethylcellulose, or a mixture thereof is about 0.5 to 1.0% by weight of the carbon powder, the molding pressure should be 3 t/w relative to the roll width. It has sufficient strength to withstand use at pressures around am, but if the amount of caking agent is reduced below this, a sufficiently higher molding pressure is required.
また、本発明においては、最後の工程で乾燥処理を行い
、好ましくは水分を３％以下としているので、これによ
って−旦成形されたブリゲットの強度を向上させている
。Furthermore, in the present invention, a drying process is performed in the final step, preferably to reduce the moisture content to 3% or less, thereby improving the strength of the brigette once formed.
上記実験例は石炭粉について実験したが、コークス粉、
黒鉛粉、電極粉についても略同等な実験結果が得られる
。The above experiment example was conducted on coal powder, but coke powder,
Approximately similar experimental results can be obtained for graphite powder and electrode powder.
続いて、本発明方法を具体化した実施例について説明し
、本発明の理解に供する。Next, examples embodying the method of the present invention will be described to provide an understanding of the present invention.
まず、原料として石炭粉は１■−以下の粒度のものを３
０〜７０％程度含み、他は骨材となる１ｓ＋ｍ〜８−−
程度の石炭粉を２０００ｋｇと、粘結材となるポリビニ
ルアルコール６ｋｇとα澱粉１０ｋｇとをフレ７トミル
（その他のミキサーであっても良い）に投入し、適当に
攪拌しながら徐々に水を混入し、全体の水分が１０％以
内になるようにして十分混練した。First, as a raw material, coal powder with a particle size of 1 - 3
Contains about 0 to 70%, the rest is aggregate 1s+m to 8--
2,000 kg of coal powder, 6 kg of polyvinyl alcohol as a caking agent, and 10 kg of α-starch are put into a FRE7 mill (other mixers may be used), and water is gradually mixed in while stirring appropriately. The mixture was thoroughly kneaded so that the total moisture content was within 10%.
次に、この混合物を成形圧力をロール幅に対して約３．
５ｔ／Ｃ−程度に調整され、ロール径約５００ａ＋ｓ＋
のブリケットマシンに投入して成形し粒径５０ｍ−のブ
リケットを製造した。Next, this mixture is molded at a pressure of approximately 3.5 mm with respect to the roll width.
Adjusted to about 5t/C-, roll diameter about 500a+s+
The mixture was put into a briquette machine and molded to produce briquettes with a particle size of 50 m.
そして、このブリケットを乾燥装置の一例であるバンド
ドライヤーに入れて１５０℃程度の熱風を送って徐々に
乾燥し、全体の含有水分が３％以下になるまで十分乾燥
した。Then, this briquette was placed in a band dryer, which is an example of a drying device, and was gradually dried by blowing hot air at about 150° C. until the total moisture content was reduced to 3% or less.
ここで、上記実施例においては、ポリビニルアルコール
の量を石炭粉の０．３重量％、α澱粉の量を０．５重量
％とじたが、必ずしもこれに限定されるものではなく
、Ｏ，Ｓ以上１゛、０重量％以内の範囲で変化させるこ
とは可能であり、更にはその比率を変えることも可能で
ある。Here, in the above example, the amount of polyvinyl alcohol was 0.3% by weight of the coal powder, and the amount of α-starch was 0.5% by weight, but it is not necessarily limited to this.
, O, S or more and 1% by weight or less, and it is also possible to change the ratio thereof.
また、上記ポリビニルアルコールの代わりにカルボキシ
ルメチルセルロースを使用することも可能であり、更に
は、上記実施例においては原料として石炭粉を使用した
が、コークス粉、黒鉛、電極粉であっても本発明は適用
可能である。Further, it is also possible to use carboxyl methyl cellulose instead of the polyvinyl alcohol, and furthermore, although coal powder was used as the raw material in the above examples, the present invention can also be applied to coke powder, graphite, or electrode powder. Applicable.
（発明の効果〕
請求の範囲第１項〜第３項記載の炭素粉の製団方法によ
って、従来より強度の大きい、しかも粘結材の量が少な
いので不純物がより少ない全体として廉価な炭素粉の製
団方法を提供できることとなった。(Effects of the Invention) The carbon powder agglomeration method described in claims 1 to 3 provides a carbon powder that has greater strength than conventional ones, and also contains less impurities because the amount of caking agent is smaller and is less expensive overall. We are now able to provide a method for making dough.
従って、製鋼用の原料として使用しても確実に炉に投入
できる他、破砕して粉塵となることが極めて少ないので
、利用効率が高く、集塵装置等に溜まって爆発、火災等
の原因となることが極めて少なくなった。Therefore, even when used as a raw material for steelmaking, it can be reliably fed into the furnace, and it is extremely unlikely to be crushed into dust, so it has high utilization efficiency and does not accumulate in dust collectors and cause explosions, fires, etc. There are very few things happening.
代理人 弁理士 中前富士男Agent: Patent attorney: Fujio Nakamae
Claims (3)
に、該炭素粉の０．５〜１．０重量％の範囲でポリビニ
ルアルコール、カルボキシルメチルセルロース、α澱粉
の一種または二種以上からなる粘結材を加え、含有水分
が１０％以下となるように調湿して混練した後に高圧成
形し、乾燥することを特徴とする炭素粉の製団方法。(1) Carbon powder containing 30% or more of particles with a particle size of 1 mm or less, and one or more of polyvinyl alcohol, carboxymethylcellulose, and alpha starch in the range of 0.5 to 1.0% by weight of the carbon powder. A method for making carbon powder, which comprises adding a caking agent, adjusting the humidity so that the water content is 10% or less, kneading, molding under high pressure, and drying.
ある請求の範囲第１項記載の炭素粉の製団方法。(2) The method for making carbon powder according to claim 1, wherein the compacting pressure is 3 t/cm or more relative to the roll width.
た炭素粉を残留水分が３％以下まで乾燥する請求の範囲
第１項記載の炭素粉の製団方法。(3) The method for making carbon powder according to claim 1, wherein the drying device is a band dryer, and the made carbon powder is dried to a residual moisture content of 3% or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1093390A JPH0635623B2 (en) | 1989-04-12 | 1989-04-12 | How to make carbon powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1093390A JPH0635623B2 (en) | 1989-04-12 | 1989-04-12 | How to make carbon powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02270922A true JPH02270922A (en) | 1990-11-06 |
| JPH0635623B2 JPH0635623B2 (en) | 1994-05-11 |
Family
ID=14080985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1093390A Expired - Lifetime JPH0635623B2 (en) | 1989-04-12 | 1989-04-12 | How to make carbon powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0635623B2 (en) |
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| CN108570554B (en) * | 2018-06-15 | 2020-03-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Adhesive, preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57140634A (en) * | 1981-01-13 | 1982-08-31 | Fueakaufusu G Fuyua Teerueatsu | Manufacture of carburizing agent |
| JPS62135594A (en) * | 1985-12-07 | 1987-06-18 | Norio Ohashi | Molded coal |
-
1989
- 1989-04-12 JP JP1093390A patent/JPH0635623B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57140634A (en) * | 1981-01-13 | 1982-08-31 | Fueakaufusu G Fuyua Teerueatsu | Manufacture of carburizing agent |
| JPS62135594A (en) * | 1985-12-07 | 1987-06-18 | Norio Ohashi | Molded coal |
Cited By (16)
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|---|---|---|---|---|
| CN1074047C (en) * | 1997-07-04 | 2001-10-31 | 奥地利钢铁联合企业阿尔帕工业设备制造公司 | Method for using coal fines in a melt-down gasifier |
| WO1999001583A1 (en) * | 1997-07-04 | 1999-01-14 | Voest-Alpine Industrieanlagenbau Gmbh | Method for using coal fines in a melt-down gasifier |
| JP2006057082A (en) * | 2004-07-20 | 2006-03-02 | Nippon Steel Corp | Method for producing carbon-containing molded product and method for melting treatment of waste using the carbon-containing molded product |
| JP2007191561A (en) * | 2006-01-18 | 2007-08-02 | Nippon Steel Corp | Method for producing carbonaceous material pellet |
| US9090844B2 (en) | 2007-05-09 | 2015-07-28 | Siemens Vai Metals Technologies Gmbh | Method for producing moldings |
| WO2013128786A1 (en) * | 2012-02-29 | 2013-09-06 | Ｊｆｅスチール株式会社 | Rising heat material for converter |
| CN104160042A (en) * | 2012-02-29 | 2014-11-19 | 杰富意钢铁株式会社 | Rising heat material for converter |
| JPWO2013128786A1 (en) * | 2012-02-29 | 2015-07-30 | Ｊｆｅスチール株式会社 | Heat converter for converter |
| EP3266855A4 (en) * | 2015-03-04 | 2018-05-23 | Posco | Coal briquettes, method and apparatus for manufacturing the same, and method and apparatus for manufacturing molten iron |
| EP3348627A4 (en) * | 2015-09-08 | 2018-07-18 | Posco | Coal briquette, method for producing same, and method for producing molten iron |
| EP3354712A4 (en) * | 2015-09-25 | 2018-08-01 | Posco | Coal briquettes, method for manufacturing same, apparatus for manufacturing same, and method for manufacturing molten iron |
| CN105820855A (en) * | 2016-03-30 | 2016-08-03 | 天津北方宇良科技有限公司 | Dry powder composite type coal caking agent and preparation method thereof |
| JP6408073B1 (en) * | 2017-06-12 | 2018-10-17 | 新日鉄住金エンジニアリング株式会社 | Manufacturing method of coal |
| CN111630140A (en) * | 2018-09-27 | 2020-09-04 | 日铁工程技术株式会社 | Shaped fuel and method for producing same |
| WO2020070838A1 (en) * | 2018-10-03 | 2020-04-09 | 新日鉄住金エンジニアリング株式会社 | Production method for briquette |
| CN112805356A (en) * | 2018-10-03 | 2021-05-14 | 日铁工程技术株式会社 | Method for producing shaped coal |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0635623B2 (en) | 1994-05-11 |
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