JPH01152212A - Killing agent for foaming in converter - Google Patents
Killing agent for foaming in converterInfo
- Publication number
- JPH01152212A JPH01152212A JP31270087A JP31270087A JPH01152212A JP H01152212 A JPH01152212 A JP H01152212A JP 31270087 A JP31270087 A JP 31270087A JP 31270087 A JP31270087 A JP 31270087A JP H01152212 A JPH01152212 A JP H01152212A
- Authority
- JP
- Japan
- Prior art keywords
- sawdust
- sedative
- foaming
- iron powder
- converter slag
- 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
- 238000005187 foaming Methods 0.000 title claims abstract description 18
- 239000003139 biocide Substances 0.000 title abstract 2
- 239000002994 raw material Substances 0.000 claims abstract description 30
- 239000002893 slag Substances 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 21
- 230000001624 sedative effect Effects 0.000 claims description 44
- 239000000932 sedative agent Substances 0.000 claims description 38
- 239000004927 clay Substances 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 16
- 239000002023 wood Substances 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000011347 resin Substances 0.000 abstract description 6
- 229920005989 resin Polymers 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000002147 killing effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 10
- 238000000465 moulding Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000001914 calming effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229940125723 sedative agent Drugs 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は転炉操業における鋼滓のフォーミングを鎮静さ
せるための鎮静剤に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sedative for sedating the forming of steel slag during converter operation.
転炉操業においては鋼浴中より発生するガスのために鋼
滓のフォーミングが発生する。該フォーミングが発生す
ると、炉傾動は勿論、サンプリング、測温もできなくな
るので、作業能率上、該フォーミングを速やかに鎮静さ
せる必要がある。During converter operation, forming of steel slag occurs due to gas generated from the steel bath. When this forming occurs, not only the furnace tilting but also sampling and temperature measurement become impossible. Therefore, in terms of work efficiency, it is necessary to quickly stop the forming.
かかるフォーミングを鎮静させるための鎮静剤としては
従来、次に述べるような理由からオガ屑の成型品が一般
的に使用されている。即ち、オガ屑は水分が５％程度に
なるまで乾燥されると非常に燃焼し易く、またそれ自体
結合剤となる樹脂分を含んでいるために成型し易いこと
等の理由から、オガ屑の成型品が広く使用されている。As a sedative for sedating such foaming, molded sawdust has conventionally been commonly used for the following reasons. In other words, sawdust is highly combustible when dried to a moisture content of about 5%, and it is easy to mold as it contains resin that acts as a binder. Molded products are widely used.
また、軽量物質であるオガ屑を振巾に沈下させること等
を目的として、オガ屑に転炉滓等のオガ屑よりも比重の
大きい物質を添加して混合し、その混合物をオガ屑の樹
脂分によってそのまま成型したもの、或いは該混合物を
紙等のケースに収納したもの、或は該混合物を水ガラス
等の結合剤を用いて成型したもの等も広く使用されてい
る（例えば特開昭５２−１１５７１６号）
〔発明が解決しようとする問題点〕
然るに、鎮静剤がフォーミング鎮静効果を長時間にわた
って安定的に発揮し得る性能（以下鎮静剤の持続性とい
う）について上述した如き従来の鎮静剤をみた場合、該
鎮静剤に含まれるオガ屑が非常に燃焼し易いことがかえ
って前記持続性を低下させることとなり、またオガ屑と
転炉滓等の添加物との間の大きな比重差に基づいてその
両者が分離し易いために均一な混合物が得られない結果
、前記持続性を低下させることになるという問題があっ
た。In addition, for the purpose of making sawdust, which is a lightweight material, sink in a sweeping motion, a substance with a higher specific gravity than sawdust, such as converter slag, is added to the sawdust and mixed, and the mixture is mixed with the resin of the sawdust. Products that are molded as they are, those that are made by storing the mixture in a paper case, or those that are molded using a binder such as water glass are also widely used. -115716) [Problems to be Solved by the Invention] However, the ability of the sedative to stably exhibit a foaming sedative effect over a long period of time (hereinafter referred to as sedative sustainability) is limited by conventional sedatives as described above. In this case, the fact that the sawdust contained in the sedative is extremely combustible actually reduces the sustainability, and also because of the large specific gravity difference between sawdust and additives such as converter slag. There is a problem in that a homogeneous mixture cannot be obtained because the two are likely to separate, resulting in a decrease in the sustainability.
本発明はかかる事情に鑑みてなされたものであり、その
目的とするところは、フォーミング鎮静効果も十分に備
える上、その持続性も優れた転炉用フォーミング鎮静剤
を提供する点にある。The present invention has been made in view of the above circumstances, and its purpose is to provide a foaming sedative for converters that not only has a sufficient foaming sedative effect but also has excellent durability.
本発明に係る転炉用フォーミング鎮静剤は、オガ屑又は
木皮屑４０〜６０％、転炉滓４０〜５０％、鉄粉５〜１
０％及び粘土質物質３〜１０％からなり均一混合が可能
なように粒度調整された原料が混合された上で成型され
てなることを特徴とする。The foaming sedative for converter according to the present invention contains 40 to 60% sawdust or wood bark waste, 40 to 50% converter slag, and 5 to 1% iron powder.
It is characterized by being formed by mixing raw materials consisting of 0% clay material and 3 to 10% clay material whose particle size has been adjusted so that uniform mixing is possible, and then molding.
かかる本発明の鎮静剤は、オガ屑又は木皮屑を適度に含
有するため、これが燃焼して発生するガスが鋼滓のフォ
ーミングを破泡し、それによってフォーミング鎮静効果
が生じる。またオガ屑の軽量物質に比して比重が十分に
大きい転炉滓及び鉄粉を適度に含有するため、本発明の
鎮静剤は、オガ屑等の軽量物質を多量に含みつつも環中
に有効に沈下し前記フォーミング鎮静効果を確実なもの
となすことができる。また転炉滓、鉄粉及び粘土質物質
がオガ屑又は木皮屑の燃焼を適度に抑えることとなり、
オガ屑又は木皮屑が適度に燃焼することによって鎮静剤
の持続性が低下するという従来の問題が解消される。ま
た本発明の鎮静剤は、オガ屑に含まれる樹脂分及び粘土
質物質の作用によって成形されたままの状態が十分に保
持されることになり、これによっても前記持続性が向上
する。しかも本発明の鎮静剤は均一混合可能なように粒
度調整された原料が混合された上で成型されたものであ
るため、原料各成分が鎮静剤内で均一に分布することと
なって上述の原料各成分がいずれも有効に作用すること
となる。Since the sedative of the present invention contains a moderate amount of sawdust or wood bark shavings, the gas generated when this is combusted breaks the foaming of the steel slag, thereby producing a sedating effect on the forming. In addition, since the sedative of the present invention contains a suitable amount of converter slag and iron powder, which have a sufficiently large specific gravity compared to the light material of sawdust, the sedative of the present invention contains a large amount of light material such as sawdust, but still It can be effectively submerged and the foaming calming effect can be ensured. In addition, converter slag, iron powder, and clay materials moderately suppress the combustion of sawdust or wood bark waste,
The conventional problem of reduced durability of the sedative due to moderate combustion of sawdust or wood bark dust is solved. Further, the sedative of the present invention is sufficiently maintained in its molded state due to the action of the resin and clay material contained in the sawdust, and this also improves the durability. Moreover, since the sedative of the present invention is formed by mixing raw materials whose particle sizes have been adjusted so that they can be mixed uniformly, each component of the raw material is uniformly distributed within the sedative, resulting in the above-mentioned effect. Each component of the raw materials will work effectively.
以下本発明をその実施例を示す図面に基づいて説明する
。The present invention will be described below based on drawings showing embodiments thereof.
第１図は本発明に係る鎮静剤を製造するための装置を示
す模式的説明図である。図中２はオガ屑又は木皮屑（以
下オガ屑に代表させて単にオガ屑という）を装入した第
１原料槽を示しており、その底部からは前記オガ屑が第
１スクリユーコンベア３へ送出されるようになっている
。そして該オガ屑は、第１スクリユーコンベア３によっ
て下流側へ移送され、熱風発生炉１にて発生せしめられ
バタフライバルブ４を経て供給される熱風と共にケージ
ミル５内へ送給されるようになっている。FIG. 1 is a schematic explanatory diagram showing an apparatus for producing a sedative according to the present invention. Reference numeral 2 in the figure indicates a first raw material tank in which sawdust or wood bark scraps (hereinafter simply referred to as sawdust) are charged, and the sawdust is transferred from the bottom to the first screw conveyor 3. It is now sent out. The sawdust is then transferred to the downstream side by the first screw conveyor 3, and is fed into the cage mill 5 together with the hot air generated in the hot air generating furnace 1 and supplied through the butterfly valve 4. There is.
ケージミル５上には乾燥機６が連設されており、前記オ
ガ屑は熱風と共にケージミル５を経て乾燥機６内へ送り
込まれ、該乾燥機６内にてオガ屑は熱風によって適度に
乾燥させるようになっている。A dryer 6 is connected to the cage mill 5, and the sawdust is fed together with hot air into the dryer 6 through the cage mill 5. In the dryer 6, the sawdust is properly dried by the hot air. It has become.
そして乾燥されたオガ屑（以下乾燥オガ屑という）は乾
燥機６の下流側に配されたサイクロンセパレータ７によ
ってエアと分離され、該セパレータ７の下部に設けられ
たバルブエ１を経て乾燥原料貯槽１２内へ送り込まれる
ようになっている。なお上述の如く分離されたエアは、
中途に高圧ターボファン９が介装され該ファン９によっ
て吸引排出力が付与されるエアダクト８によって煙突１
０へ送出され、該煙突１０から系外へ排出されるように
なっている。The dried sawdust (hereinafter referred to as dried sawdust) is separated from the air by a cyclone separator 7 placed on the downstream side of the dryer 6, and passes through a valve 1 installed below the separator 7 to a dry raw material storage tank 12. It is meant to be sent inside. The air separated as described above is
The chimney 1 is connected to the chimney 1 by the air duct 8, which has a high-pressure turbo fan 9 interposed in the middle, and the fan 9 provides a suction and exhaust force.
0 and is discharged from the chimney 10 to the outside of the system.
前記乾燥原料貯槽１２の下方には、第２スクリユーコン
ベア１３が配されており乾燥原料貯槽１２の底部からは
前記乾燥オガ屑が第２スクリユーコンベア１３へ送出さ
れ、該オガ屑は第２スクリユーコンベア１３によって下
流側へ移送され、その下流端に配された混合機２０内へ
供給されるようになっている。A second screw conveyor 13 is disposed below the dry raw material storage tank 12, and the dried sawdust is delivered from the bottom of the dry raw material storage tank 12 to the second screw conveyor 13. It is transported downstream by the screw conveyor 13 and supplied into a mixer 20 disposed at its downstream end.
該混合機２０は第２図に示す如く、周囲にスクリュー羽
＋ｌｌＩ２０ｂが巻回装着されると共に回転自在なスク
リュー軸２０ａが１対対称的に並設されて要部が構成さ
れており、該混合機２０には第２原料槽１５内に送入さ
れその底部から送出される転炉滓、鉄粉（銑鉄粉等）及
び粘土質物質（ベントナイト等）もベルトコンベア１４
によって下流側へ移送されて供給されるようになってい
る。As shown in FIG. 2, the main part of the mixer 20 is composed of a pair of rotatable screw shafts 20a arranged symmetrically in parallel with a screw blade +llI 20b wound around the periphery. Converter slag, iron powder (pig iron powder, etc.), and clay materials (bentonite, etc.) that are fed into the second raw material tank 15 and sent out from the bottom of the second raw material tank 15 are also transferred to the machine 20 via the belt conveyor 14.
It is designed to be transported and supplied to the downstream side.
そして該混合機２０においては、前記乾燥オガ屑と前記
転炉滓、鉄粉及び粘土質物質とがスクリュー軸２０ａの
回転によって混合され、その出口から送出されるように
なっているが、その混合物は、第３スクリユーコンベア
１６及び第４スクリユーコンベア１７によって複数の加
圧押出型の成型Ｊａ１８に夫々送給され、各成型機１８
にて成型されるようになっている。In the mixer 20, the dry sawdust, the converter slag, iron powder, and clay material are mixed by the rotation of the screw shaft 20a, and the mixture is sent out from the outlet. are respectively fed to a plurality of pressurized extrusion molds Ja 18 by the third screw conveyor 16 and the fourth screw conveyor 17, and are sent to each molding machine 18.
It is designed to be molded in.
かかる装置を用いて本発明に係る転炉用フォーミング鎮
静剤を製造する場合、第１原料槽２内には、１ｍｍ以下
の大きさとなるように粒度調整して第２原料槽１５内の
原料との均一混合を可能ならしめたオガ屑を装入する一
方、第２原料槽１５内には上述のオガ屑との均一混合を
可能ならしめるべく粒度調整した原料、即ち６０％以上
がｌ ｍｍ以下の大きさとなるようにしつつ全体として
３ｆｌ以下の大きさとなるように粒度調整した転炉滓と
１００メツシュ以下の大きさとなるように粒度調整した
鉄粉と１００メツシュ以下の大きさとなるように粒度調
整した粘土質物質とからなる原料を適宜比率で混合した
上で装入する。そして第１原料槽２内のオガ屑を乾燥機
６にて水分が５〜１５％となるように乾燥した後、その
乾燥オガ屑中のエアをサイクロンセパレータ７にて分離
し、そのエアが分離された乾燥オガ屑を混合機２０内へ
適量供給する。また該混合機２０内には、転炉滓、鉄粉
及び粘土質物質が適宜比率で混合されたものも適量供給
される。When producing the foaming sedative for a converter according to the present invention using such an apparatus, the first raw material tank 2 contains raw materials in the second raw material tank 15 whose particle size is adjusted to have a particle size of 1 mm or less. In the second raw material tank 15, sawdust whose particle size has been adjusted to enable uniform mixing with the above-mentioned sawdust is charged, that is, 60% or more of the sawdust is 1 mm or less Converter slag whose particle size is adjusted so that the overall size is 3fl or less, iron powder whose particle size is adjusted to be 100 mesh or less, and particle size adjusted so that the particle size is 100 mesh or less. The raw materials consisting of clayey materials and clay materials are mixed in an appropriate ratio and then charged. After the sawdust in the first raw material tank 2 is dried in a dryer 6 to a moisture content of 5 to 15%, the air in the dried sawdust is separated by a cyclone separator 7, and the air is separated. An appropriate amount of dried sawdust is fed into the mixer 20. Further, an appropriate amount of converter slag, iron powder, and clay material mixed in an appropriate ratio is also supplied into the mixer 20.
燃して、オガ屑、転炉滓、鉄粉及び粘土質物質からなる
原料が供給される混合機２０内においては、これらの原
料が所定の比率、具体的にはオガ屑４０〜６０％（好ま
しくは５０％）、転炉滓４０〜５０％（好ましくは４２
％）、鉄粉５〜１０％（好ましくは５％）、粘土質物質
３〜１０％（好ましくは３％）、の比率に混合されるこ
ととなるが、各原料は夫々、上述の如く均一混合が可能
なように粒度調整されているため、混合機２０内での原
料の混合は十分均一に行われていることとなる。In the mixer 20 to which raw materials consisting of sawdust, converter slag, iron powder, and clay materials are supplied after being burned, these raw materials are mixed in a predetermined ratio, specifically 40 to 60% sawdust ( Preferably 50%), converter slag 40 to 50% (preferably 42%)
%), iron powder 5 to 10% (preferably 5%), and clay material 3 to 10% (preferably 3%), but each raw material is uniformly mixed as described above. Since the particle size is adjusted to enable mixing, the raw materials are mixed sufficiently uniformly in the mixer 20.
然して、所定比率に且つ十分均一に混合された原料はス
クリューコンベア１６．１７によって複数の成型機１８
に夫々送給されて成型され、本発明に係る転炉用フォー
ミング鎮静剤が得られる。The raw materials mixed sufficiently uniformly in a predetermined ratio are transferred to a plurality of molding machines 18 by screw conveyors 16 and 17.
The foaming sedative for a converter according to the present invention is obtained by feeding and molding them respectively.
かくして得られる本発明の鎮静剤は、オガ屑を４０〜６
０％と適度に含有するため、これが燃焼して発生するガ
スが鋼滓のフォーミングを破泡し、それによってフォー
ミング鎮静効果が生じる。なお、該オガ屑の含有量が４
０％よりも少ない場合は上述の効果が殆ど生じず、また
６０％よりも多い場合は鎮静剤の重量が軽くなって鎮静
剤が振巾に沈下し難しくなるので上述の範囲にオガ屑の
含有量を限定した。またオガ屑の乾燥機６による乾燥を
水分が５〜１５％となるように行うのは、乾燥が不足し
て水分が１５％よりも多く含まれる場合は成型時に水蒸
気が発生してこれが突出し、成型機１８による成型がで
きなくなるからであり、水分が５％よりも少なくなる程
度まで過度乾燥する場合は経済性が悪い上、乾燥原料貯
槽１２内での発火のおそれが生じるからである。The sedative of the present invention thus obtained contains sawdust in a concentration of 40 to 6
Since it is contained in an appropriate amount of 0%, the gas generated when it burns breaks the foaming of the steel slag, thereby producing a forming-suppressing effect. In addition, the content of the sawdust is 4
If it is less than 0%, the above-mentioned effect will hardly occur, and if it is more than 60%, the weight of the sedative will be light and it will be difficult for the sedative to sink in the shaking cloth, so the content of sawdust should be within the range mentioned above. Limited quantity. Also, the reason why the sawdust is dried in the dryer 6 so that the moisture content is 5 to 15% is because if the moisture content is more than 15% due to insufficient drying, water vapor will be generated during molding and this will protrude. This is because molding by the molding machine 18 becomes impossible, and excessive drying to the extent that the moisture content is less than 5% is not only economically uneconomical, but also because there is a risk of ignition within the dry raw material storage tank 12.
また前記本発明の鎮静剤は、転炉滓を４０〜５０％と適
度に含有するため、該転炉滓が鎮静剤に適当な重量を付
加して鎮静剤を振巾に沈下させることができるようにな
る上、オガ屑中に分散してその燃焼を適度に抑えること
となる。しかも転炉滓中に混合してもその成分変動が生
じないという利点がある。なお、該転炉滓の含有量を上
述の如く限定したのは、それが４０％よりも少ない場合
は鎮静剤に重量を付加するのが不十分となって鎮静剤を
振巾に沈下させる効果が不十分となり、またオガ屑の燃
焼を適度に抑える効果も不十分となるからである。また
前記含有量が５０％よりも多い場合はオガ屑の燃焼が過
度に抑えられてその燃焼によるガス発生が少なくなって
それによるフォーミング鎮静効果が不十分となるからで
ある。なお、該転炉滓は原料の段階でその水分含有量を
１％以下にしておくのが好ましい。Furthermore, since the sedative of the present invention contains converter slag at an appropriate level of 40 to 50%, the sedative can add an appropriate weight to the sedative and cause the sedative to sink. Not only that, but it also disperses in the sawdust and suppresses its combustion to an appropriate degree. Moreover, it has the advantage that even if it is mixed into the converter slag, the composition does not change. The reason for limiting the content of the converter slag as described above is that if the content is less than 40%, it will not add enough weight to the sedative, causing the sedative to sink. This is because the effect of properly suppressing the combustion of sawdust becomes insufficient. Further, if the content is more than 50%, the combustion of sawdust is excessively suppressed, gas generation due to the combustion is reduced, and the foaming suppression effect thereby becomes insufficient. In addition, it is preferable that the water content of the converter slag is kept at 1% or less when it is used as a raw material.
また前記本発明の鎮静剤は、鉄粉を５〜１０％と適度に
含有するため、該鉄粉が鎮静剤に適当な重量を付加して
鎮静剤を振巾に沈下させることができるようになる。ま
た該鉄粉は原料の段階で上述の如＜１００メツシュ以下
の大きさの微粉とされているため、嵩比重が低くなり、
また混合時にオガ屑内に分散し易くオガ屑の燃焼を効率
よく抑制する。また鉄粉は振巾の酸素（該酸素は鋼滓の
フォーミングの原因となる）を消費するためにフォーミ
ング鎮静効果が生じる。In addition, since the sedative of the present invention contains iron powder at a moderate level of 5 to 10%, the iron powder adds an appropriate weight to the sedative and allows the sedative to sink into the sedative. Become. In addition, since the iron powder is made into a fine powder with a size of <100 mesh or less as described above at the raw material stage, the bulk specific gravity is low,
In addition, it is easily dispersed in the sawdust during mixing and efficiently suppresses the combustion of the sawdust. In addition, since the iron powder consumes oxygen (the oxygen causes forming of the steel slag), a forming-suppressing effect occurs.
なお、該鉄粉の含有量を上述の如く限定したのは、それ
が５％よりも少ない場合は前記持続性を向上させる効果
が認められなくなるからであり、またそれが１０％より
も多い場合は鎮静剤の重量が過大となるからである。な
お、該鉄粉も原料の段階でその水分含有量を１％以下に
しておくのが好ましい。The reason why the content of the iron powder is limited as mentioned above is that if it is less than 5%, the effect of improving the sustainability will not be recognized, and if it is more than 10%, This is because the weight of the sedative becomes excessive. In addition, it is preferable that the water content of the iron powder is kept at 1% or less at the raw material stage.
また前記本発明の鎮静剤は、粘土質物質を３〜１０％と
適度に含有するため、該粘土質物質は、不燃物として作
用しオガ屑の燃焼を適度に抑制する上、結合剤としてオ
ガ屑中の樹脂分の不足を補い、成型後の鎮静剤を強固な
ものとする。また該粘土質物質は原料の段階で上述の如
＜１００メツシュ以下の微粉にされているため、混合時
にオガ屑内に分散し易（なる。なお、該粘土質物質も原
料の段階でその水分含有量を１％以下にしておくのが好
ましい。Furthermore, since the sedative of the present invention contains a clayey substance at an appropriate level of 3 to 10%, the clayey substance acts as a noncombustible substance and moderately suppresses the combustion of sawdust, and also acts as a binder with sawdust. It makes up for the lack of resin in the scraps and makes the sedative stronger after molding. In addition, since the clay material is made into a fine powder of <100 mesh or less as described above, it is easily dispersed in the sawdust during mixing. It is preferable to keep the content below 1%.
以上詳述した如く、本発明に係る転炉用フォーミング鎮
静剤は、オガ屑又は木皮屑を適度に含有するためにその
燃焼によるフォーミング鎮静効果を十分に発揮すること
ができる上、転炉滓、鉄粉及び粘土質物質を適度に含有
するために前記燃焼を適度に抑制してその持続性が向上
する。また粘土質物質がオガ屑等の樹脂分を補って鎮静
剤の成型性を向上させ、その持続性を向上させる。しか
も原料が粒度調整された上で混合されているため、十分
均一に混合された上で成型されることとなり、上述の効
果をより確実に発揮することができる。As detailed above, the foaming sedative for converter according to the present invention contains a suitable amount of sawdust or wood bark shavings, so that it can sufficiently exhibit the sedative effect of sedating foaming due to its combustion. Since the iron powder and clay material are appropriately contained, the combustion is appropriately suppressed and its sustainability is improved. In addition, the clay material supplements the resin content such as sawdust, improves the moldability of the sedative, and improves its sustainability. In addition, since the raw materials are mixed after adjusting the particle size, the molding is performed after being mixed sufficiently uniformly, and the above-mentioned effects can be more reliably exerted.
第１図は本発明に係る転炉用フォーミング鎮静剤を製造
するための装置を示す模式的説明図、第２図は該装置に
含まれる混合機の要部を示す平面図である。
２・・・第１原料槽 ３．１３．１６．１７・・・スク
リューコンベア ６・・・乾燥機 １５・・・第２原料
槽 ２０・・・混合ａ １８・・・成型機
特 許 出願人 リケン化成株式会社代理人 弁理士
河 野 登 夫FIG. 1 is a schematic explanatory view showing an apparatus for producing a foaming sedative for a converter according to the present invention, and FIG. 2 is a plan view showing the main parts of a mixer included in the apparatus. 2... First raw material tank 3.13.16.17... Screw conveyor 6... Dryer 15... Second raw material tank 20... Mixing a 18... Molding machine patent applicant Noboru Kono, Patent Attorney, Riken Kasei Co., Ltd.
Claims (1)
％、鉄粉５〜１０％及び粘土質物質３〜１０％からなり
均一混合が可能なように粒度調整された原料が混合され
た上で成型されてなることを特徴とする転炉用フォーミ
ング鎮静剤。 ２、前記原料は、オガ屑又は木皮屑を１ｍｍ以下の大き
さとなるように粒度調整し、転炉滓をその６０％以上が
１ｍｍ以下の大きさとなるようにしつつ全体として３ｍ
ｍ以下の大きさとなるように粒度調整し、鉄粉を１００
メッシュ以下の大きさとなるように粒度調整し、且つ、
粘土質物質を１００メッシュ以下の大きさとなるように
粒度調整することにより、その均一混合を可能ならしめ
てある特許請求の範囲第１項記載の転炉用フォーミング
鎮静剤。[Claims] 1. 40-60% sawdust or wood bark scraps, 40-50% converter slag
%, 5-10% iron powder, and 3-10% clay material, the particle size of which has been adjusted to enable uniform mixing, is mixed and then molded. agent. 2. The raw material is made by adjusting the particle size of sawdust or wood bark scraps to a size of 1 mm or less, and making the converter slag so that 60% or more of it has a size of 1 mm or less, making it 3 m as a whole.
Adjust the particle size so that it has a size of 100 m or less, and
Adjust the particle size so that it is smaller than the mesh size, and
The foaming sedative for a converter according to claim 1, wherein uniform mixing of the clay material is made possible by adjusting the particle size of the clay material to a size of 100 mesh or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31270087A JPH01152212A (en) | 1987-12-09 | 1987-12-09 | Killing agent for foaming in converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31270087A JPH01152212A (en) | 1987-12-09 | 1987-12-09 | Killing agent for foaming in converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01152212A true JPH01152212A (en) | 1989-06-14 |
Family
ID=18032378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31270087A Pending JPH01152212A (en) | 1987-12-09 | 1987-12-09 | Killing agent for foaming in converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01152212A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10015186B4 (en) * | 1999-03-29 | 2005-01-20 | Fuji Photo Optical Co., Ltd., Omiya | lens Mounting |
| JP2016056409A (en) * | 2014-09-09 | 2016-04-21 | 山本商事株式会社 | Foaming suppressing material, producing method of foaming suppressing material and product plant of foaming suppressing material |
-
1987
- 1987-12-09 JP JP31270087A patent/JPH01152212A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10015186B4 (en) * | 1999-03-29 | 2005-01-20 | Fuji Photo Optical Co., Ltd., Omiya | lens Mounting |
| JP2016056409A (en) * | 2014-09-09 | 2016-04-21 | 山本商事株式会社 | Foaming suppressing material, producing method of foaming suppressing material and product plant of foaming suppressing material |
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