JP3349525B2 - Method for producing rock wool by converting blast furnace slag from blast furnace into cotton - Google Patents
Method for producing rock wool by converting blast furnace slag from blast furnace into cottonInfo
- Publication number
- JP3349525B2 JP3349525B2 JP19330192A JP19330192A JP3349525B2 JP 3349525 B2 JP3349525 B2 JP 3349525B2 JP 19330192 A JP19330192 A JP 19330192A JP 19330192 A JP19330192 A JP 19330192A JP 3349525 B2 JP3349525 B2 JP 3349525B2
- Authority
- JP
- Japan
- Prior art keywords
- blast furnace
- cotton
- rock wool
- slag
- furnace 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.)
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Description
【０００１】[0001]
【産業上の利用分野】 本発明は高炉からの高炉溶融ス
ラグを製綿化してロックウ−ルを製造する方法に係り、
詳しくは、溶融高炉スラグの成分調整材として添加され
るケイ砂などの副原料に溶融高炉スラグの製綿化のとき
に発生する未製綿化物を加えて粉砕し、これらを一体と
して電気炉中の溶融高炉スラグに添加して、溶解、成分
調整してから製綿化してロックウ−ルを製造する方法で
あって、なかでも、この製綿化のときに発生する未製綿
化物が有効に利用できるほか、成分調整用として加えら
れるケイ砂などの副原料の溶解が促進されて、ロックウ
−ル製造時に用いられる電気炉の電力原単位を大巾に低
減できる高炉からの高炉溶融スラグを製綿化してロック
ウ−ルを製造する方法に係る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing rock wool by converting blast furnace slag from a blast furnace into cotton.
Specifically, un-cottonized materials generated during the production of molten blast-furnace slag are added to auxiliary materials such as silica sand added as a component adjusting material for molten blast-furnace slag, and crushed. Is added to the molten blast furnace slag, melted, adjusted for ingredients, and then made into cotton to produce rock wool. Among them, uncottonized material generated at the time of making cotton is effectively used. It can be used to produce blast furnace melting slag from blast furnaces, which can promote the dissolution of auxiliary materials such as silica sand added for component adjustment and greatly reduce the electric power consumption of electric furnaces used in rock wool production. The present invention relates to a method for producing rock wool by converting cotton.
【０００２】[0002]
【従来の技術】最近、石綿などの公害問題に端を発して
その代替品としてロックウ−ルおよびその加工品が注目
を集めている。このロックウ−ルは、玄武岩、安山岩等
の天然のケイ酸塩鉱石を原料としてキュ−ポラ、電気炉
などで溶解し、これを遠心力を利用して製綿化して製造
されている。2. Description of the Related Art Recently, rock wool and its processed products have attracted attention as substitutes for the pollution problems such as asbestos. This rock wool is produced by using a natural silicate ore such as basalt or andesite as a raw material, melting it in a cupola, an electric furnace, or the like, and then producing the cotton using centrifugal force.
【０００３】また、近頃は、高炉から排出される高炉ス
ラグが組成的に自然のケイ酸塩鉱石に近似しているとこ
ろから、高炉スラグがロックウ−ルの原料として用いら
れるようになっている。高炉スラグは、一般的に、溶融
状態のままで入手することが困難であるため、製鉄所内
で一旦徐冷された高炉スラグを天然のケイ酸塩鉱石と同
様に再び、キュ−ポラなどで溶融して、製綿化して製造
されている。Recently, blast furnace slag discharged from a blast furnace has been used as a raw material for rock wool because blast furnace slag is compositionally similar to natural silicate ore. In general, it is difficult to obtain blast furnace slag in a molten state, so blast furnace slag that has been gradually cooled in an ironworks is melted again with cupolas and the like, like natural silicate ore. It is manufactured by cotton production.
【０００４】しかし、最近、省エネルギ−の観点から、
製鉄所内でロックウ−ルの製造設備を高炉に関連させて
配置し、高炉から排出される高炉スラグを冷却すること
なくロックウ−ル製造設備で溶融したままで利用し、こ
れを製綿化することが行なわれ、この方法として種々の
方法が提案されている。However, recently, from the viewpoint of energy saving,
Arranging rock wool production equipment in a steelworks in relation to a blast furnace, and utilizing the blast furnace slag discharged from the blast furnace as it is melted without cooling in the rock wool production equipment to produce cotton. And various methods have been proposed as this method.
【０００５】例えば、特開平１−８３５３５号公報に
は、溶融状態の高炉スラグを、溶解、成分調整ならびに
温度調整する電気炉を２基設け、２基の電気炉を交互に
繰返して使い分け、溶融高炉スラグが連続的に製綿機に
供給できるようにする方法が記載されている。For example, Japanese Patent Application Laid-Open No. 1-83535 discloses that two electric furnaces for melting, adjusting components and adjusting the temperature of a molten blast furnace slag are provided, and the two electric furnaces are alternately used alternately. A method is described that enables blast furnace slag to be continuously fed to a cotton mill.
【０００６】 また、特開昭６２−６５９５０号公報に
は、２つの電気炉を連結して使用し、１つの電気炉で溶
融高炉スラグの溶解、成分調整してから、他の電気炉で
温度調整し、その後、この溶融された高炉スラグを成分
調整された状態で製綿機によって製綿化する方法が記載
されている。Japanese Patent Application Laid-Open No. Sho 62-65950 discloses that two electric furnaces are connected and used, and the melting and the composition of the molten blast furnace slag are adjusted in one electric furnace, and then the temperature is adjusted in another electric furnace. A method is described in which the blast furnace slag is adjusted and then the molten blast furnace slag is made into cotton by a cotton mill in a state where the components are adjusted.
【０００７】しかしながら、これら方法には高炉溶融ス
ラグの利用によってロックウ−ルを製造できることが示
されているが、この方法によっての本質的欠点を改善し
たものでない。However, although it has been shown that these methods can produce rock wool by using blast furnace molten slag, they do not improve the essential disadvantages of this method.
【０００８】 すなわち、製綿機としては通常遠心力を
利用する型式のものが用いられている。この型式の製綿
機は、回転するホイルを具え、このホイルの円周面上に
電気炉から溶融高炉スラグを滴下し、ホイル回転の遠心
力によって、溶融高炉スラグを製綿、繊維化するもので
ある。しかしながら、この製綿プロセスにおいて、ホイ
ル上でロックウ−ルの繊維フィラメントが生成するとき
に、フィラメントの生長が不十分に終り、製品となり得
ないもの、つまり、所謂ウェストと呼ばれているもの
や、各繊維フィラメントの先端が球状のままで残ったも
の、つまり所謂ショットと呼ばれているものがどうして
も発生する。[0008] That is, as the cotton mill, a type using a centrifugal force is generally used. This type of cotton mill is equipped with a rotating foil, and the molten blast furnace slag is dropped from an electric furnace on the circumferential surface of the foil, and the molten blast furnace slag is made into cotton and fiberized by the centrifugal force of the foil rotation. It is. However, in this cotton-making process, when rockwool fiber filaments are formed on the foil, the filaments grow insufficiently and cannot be a product, that is, what is called a waist, Whatever remains at the tip of each fiber filament while being spherical, that is, what is called a shot, is inevitably generated.
【０００９】 これらショットやウェストなどは未製綿
化物であって、この未製綿化物は、例えば高圧気体によ
って飛ばした際の比重差が製品となる繊維フィラメント
との間であることを利用して、製品の繊維フィラメント
から分離して廃棄されている。しかしながら、この未製
綿化物は繊維フィラメントとして十分に製綿化されてい
ないために製品とはなり得ないが、組成は製品の繊維フ
ィラメントの組成と同じであり、廃棄するのはきわめて
不経済である。[0009] These shots and waists are unformed cotton materials, and the unmade cotton materials are used, for example, by utilizing a difference in specific gravity when blown by a high-pressure gas with a fiber filament as a product. , Which are separated from the product fiber filaments and discarded. However, this uncottonized cotton cannot be a product because it is not sufficiently made into cotton as a fiber filament.However, the composition is the same as that of the fiber filament of the product, and it is extremely uneconomical to dispose. is there.
【００１０】[0010]
【発明が解決しようとする課題】 本発明は上記要請に
もとずいて成立したものであって、具体的には、高炉か
らの溶融高炉スラグを製綿化してロックウ−ルを製造す
る間に発生するショットやウェストの未製綿化物を再利
用するために、これをケイ砂などの副原料とともに電気
炉に送給し、この電気炉において溶融高炉スラグととも
に溶融、成分調整をはかり、これに併せて、この電気炉
操業における電力原単位の低減化を達成する方法を提案
する。DISCLOSURE OF THE INVENTION The present invention has been accomplished based on the above-mentioned demands, and more specifically, a method for producing rock wool by producing cotton from molten blast furnace slag from a blast furnace. In order to reuse the unformed cotton material of the generated shots and waist, it is sent to an electric furnace together with auxiliary materials such as silica sand, where it is melted together with the molten blast furnace slag and the components are adjusted. At the same time, we propose a method to reduce the unit power consumption in the electric furnace operation.
【００１１】[0011]
【課題を解決するための手段】 すなわち、本発明方法
は、高炉からの高炉溶融スラグを製綿化してロックウ−
ルを製造する際に発生する未製綿化物をロックウ−ル製
造用副原料に加えて粉砕して微粒子化し、この微粒子を
電気炉に供給して、この電気炉内に供給されている溶融
高炉スラグとともに溶解、成分調整して製綿化すること
を特徴とする。Means for Solving the Problems In the method of the present invention, a blast furnace molten slag from a blast furnace is made into cotton,
The raw cotton material generated during the production of steel is added to the auxiliary material for rock wool production and pulverized into fine particles. The fine particles are supplied to an electric furnace, and the molten blast furnace supplied to the electric furnace is supplied to the electric furnace. It is characterized by dissolving with slag and adjusting the ingredients to produce cotton.
【００１２】以下、これら手段たる構成ならびにその作
用を図面により、更に詳しく説明すると、次の通りであ
る。Hereinafter, the structure and operation of these means will be described in more detail with reference to the drawings.
【００１３】なお、図１は本発明方法を実施する際に用
いられる未製綿化物の再利用装置の一例の説明図であ
り、図２は溶融高炉スラグを主原料としてのロックウ−
ル製造装置のフロ−シ−トである。FIG. 1 is an explanatory view of an example of an apparatus for recycling unformed cotton material used in carrying out the method of the present invention, and FIG. 2 is a block diagram of a rock crusher using molten blast furnace slag as a main raw material.
3 is a flow chart of a device manufacturing apparatus.
【００１４】まず、図２において、符号１は高炉、１ａ
は高炉１から供給される溶融高炉スラグ、２はケイ砂な
どの副原料、３は１次電気炉、４は２次電気炉、５は製
綿機、６は集綿室、７は集綿コンベヤを示す。First, in FIG. 2, reference numeral 1 denotes a blast furnace, 1a
Is a molten blast furnace slag supplied from the blast furnace 1, 2 is an auxiliary material such as silica sand, 3 is a primary electric furnace, 4 is a secondary electric furnace, 5 is a cotton mill, 6 is a cotton collection room, 7 is a cotton collection. Shows a conveyor.
【００１５】 図２に示すように、高炉１においては、
従来例の通り、鉄鉱石が製錬され、製錬の結果得られる
高炉銑は溶融状態で出銑される一方、高炉溶融スラグ１
ａは溶融状態のままで出滓され、例えば、台車（図示せ
ず）にうけて取鍋（図示せず）を介して１次電気炉３の
ところに供給される。１次電気炉３においては、ケイ砂
などの副原料２が供給され、溶解されて溶融高炉スラグ
１ａの組成や性質が製綿に適するように調整される。そ
の後、溶融高炉スラグ１ａは２次電気炉４で保温され、
脱気、熟成されて製綿機５で製綿される。製綿された繊
維フィラメントは集綿室６内の集綿コンベヤ７上にのせ
られて排出されるが、ショット、ウェストなどの未製綿
化物は製綿機５と集綿室６との間で回収される。As shown in FIG. 2, in the blast furnace 1,
As in the conventional example, iron ore is smelted and the blast furnace iron obtained as a result of smelting is tapped in a molten state.
a is discharged in a molten state, and is supplied to the primary electric furnace 3 via a ladle (not shown), for example, by receiving a trolley (not shown). In the primary electric furnace 3, the auxiliary material 2 such as silica sand is supplied and melted, and the composition and properties of the molten blast furnace slag 1a are adjusted to be suitable for cotton production. Thereafter, the molten blast furnace slag 1a is kept warm in the secondary electric furnace 4,
After being degassed and aged, the cotton is produced by the cotton producing machine 5. The produced fiber filaments are put on the cotton collecting conveyor 7 in the cotton collecting chamber 6 and are discharged. However, unformed cotton such as shots and waists are transferred between the cotton mill 5 and the cotton collecting chamber 6. Collected.
【００１６】 以上の通り溶融高炉スラグから製綿して
ロックウ−ルを製造する際に、図１で示すように、ケイ
砂などの副原料２には、製綿機５と集綿室６との間で回
収された未製綿化物を配合し、粉砕処理を経て１次電気
炉３に供給して、高炉１からの溶融高炉スラグ１ａ（図
２参照）の成分を調整する。As described above, when producing rock wool by making cotton from the molten blast furnace slag, as shown in FIG. 1, the auxiliary material 2 such as silica sand is provided with a cotton mill 5 and a cotton collection chamber 6. The unprocessed cotton recovered during the mixing is mixed and supplied to the primary electric furnace 3 through a pulverizing process to adjust the components of the molten blast furnace slag 1a (see FIG. 2) from the blast furnace 1.
【００１７】 図１は本発明方法を実施する装置の一例
の配置図であり、図２で製綿機５と集綿室６との間で回
収された未製綿化物１３はケイ砂などの副原料２ととも
に１次電気炉３に供給される。すなわち、ホッパ８には
副原料２とともに製綿時に発生する未製綿化物１３を投
入し、ホッパ８を経てモ−タ９１で駆動する粉砕機９に
送られ、これらは一体として例えば径５００μ以下程度
まで微粉砕される。粉砕後は、空気その他の気体をキャ
リヤとしてバッグフィルタなどの濾過装置１０に輸送さ
れ（なお、キャリヤ気体は煙突１４から排気される）、
集められた微粉状材料はタンク１１に集められ、その
後、流動化装置１２で例えば窒素ガスで流動化処理され
たのち、微粉状材料は窒素ガスなどをキャリヤガスとし
て１次電気炉３内の溶融高炉スラグ１ａ中に吹込まれ、
そこで溶融され、溶融高炉スラグ１ａの成分が調整され
る。FIG. 1 is a layout view of an example of an apparatus for carrying out the method of the present invention. In FIG. 2, the uncottonized material 13 collected between the cotton mill 5 and the cotton collection chamber 6 is made of silica sand or the like. It is supplied to the primary electric furnace 3 together with the auxiliary raw material 2. That is, the raw cotton material 13 generated during cotton production is put into the hopper 8 together with the auxiliary raw material 2 and sent to the pulverizer 9 driven by the motor 91 through the hopper 8, and these are integrally formed, for example, with a diameter of 500 μm or less. Finely ground to a degree. After pulverization, the air or other gas is transported as a carrier to a filtration device 10 such as a bag filter (the carrier gas is exhausted from a chimney 14),
The collected fine powder material is collected in a tank 11 and then fluidized by a fluidizer 12 with, for example, nitrogen gas. The fine powder material is then melted in the primary electric furnace 3 using nitrogen gas or the like as a carrier gas. Blown into the blast furnace slag 1a,
There, it is melted and the components of the molten blast furnace slag 1a are adjusted.
【００１８】 このように副原料２と製綿時に発生する
未製綿化物１３とを粉砕機９で例えば径５００μ以下程
度まで粉砕し、これらを一体として溶融高炉スラグ１ａ
中に供給すると、未製綿化物１３が有効利用によって副
原料の原単位が大巾に低減できるほか、未製綿化物１３
によって副原料２の溶解が促進され、大巾に電力原単位
が低減する。As described above, the auxiliary raw material 2 and the non-cottonized material 13 generated during cotton production are crushed by the crusher 9 to a diameter of, for example, about 500 μm or less, and the blast furnace slag 1 a
When the raw material is supplied to the inside, the basic unit of the auxiliary material can be significantly reduced by the effective use of the raw cotton material 13, and the raw cotton material 13
This promotes the dissolution of the auxiliary material 2 and greatly reduces the power consumption.
【００１９】 すなわち、ケイ砂などの副原料の融点
は、約１６００℃内外であって、きわめて高い。このた
め、溶融高炉スラグ中に副原料のみを投入すると、その
溶解のために相当の電気エネルギ−が消費される。これ
に対し、ケイ砂などの副原料と共に未製綿化物を吹込
み、なかでも、これらは一体に径５００μ以下まで粉砕
し混合されていると、吹込み時に、ケイ砂などの副原料
の微粒子の周囲に未製綿化物の微粒子が存在するかまた
は一体に凝近粒子に近い状態を形成して存在する状態に
なっている。更に、未製綿化物は予め製品としてのロッ
クウ−ルに適合するよう成分調整されているものである
ため、その融点もケイ砂などの副原料に較べると、２０
０℃程度低く、１４００℃内外である。That is, the melting point of auxiliary materials such as silica sand is very high at around 1600 ° C. For this reason, if only the auxiliary material is introduced into the molten blast furnace slag, considerable electric energy is consumed for its melting. On the other hand, unformed cotton materials are blown together with auxiliary materials such as silica sand, and, especially, if these are crushed and mixed together to a diameter of 500 μm or less, fine particles of auxiliary materials such as silica sand are injected at the time of blowing. Are present or exist in a state close to coagulated particles. Furthermore, since the uncottonized cotton has been previously adjusted in composition so as to be compatible with rock wool as a product, its melting point is lower than that of auxiliary materials such as silica sand by 20%.
It is about 0 ° C lower and about 1400 ° C.
【００２０】このため、１次電気炉３中に入ると、一体
化または周囲の未製綿化物の微粒子が２００℃程度低い
温度で溶解する。この未製綿化物の溶融物はケイ砂など
の副原料の微粒子に作用し、その組成も変化しながら、
溶解が促進され、とくに、微粒子状であるところから、
このような反応が促進され、少ない電気エネルギ−でケ
イ砂などの副原料は速やかに全て溶解し、併せて、副原
料の未溶解にもとずくトラブルも解消できる。For this reason, when entering the primary electric furnace 3, the fine particles of unified or unformed cotton are melted at a temperature lower by about 200 ° C. The melt of this unmanufactured cotton acts on the fine particles of auxiliary raw materials such as silica sand, and while its composition changes,
Dissolution is promoted, especially in the form of fine particles,
Such a reaction is promoted, and all the auxiliary materials such as silica sand are rapidly dissolved with little electric energy, and at the same time, troubles due to the undissolved auxiliary materials can be solved.
【００２１】なお、このトラブルとは、１次電気炉中に
おいて、ケイ砂などの副原料への熱の伝達が不十分であ
ったり、投入場所によって、ケイ砂などの副原料の溶解
がばらつき、局部的に不溶解部分が残ることである。未
溶解のケイ砂などの副原料が存在すると、出滓の際に、
１次や２次の電気炉の出滓口を閉塞し、定常的に均一な
溶融高炉スラグを製綿機に供給できない。また、未溶解
のケイ砂などの副原料が溶融高炉スラグ上に残ると、所
謂棚吊りと云われる現象が発生し、棚吊りが発生する
と、その上に、高炉から新しく溶融高炉スラグが供給さ
れたときには、棚吊りを起こしたケイ砂などの副原料は
未溶解のままで残り、溶融高炉スラグに反応し混合もし
ない。[0021] The trouble is that, in the primary electric furnace, the heat transfer to the auxiliary material such as silica sand is insufficient, or the dissolution of the auxiliary material such as silica sand varies depending on the charging place. The insoluble portion remains locally. If undissolved auxiliary materials such as silica sand are present,
The slag outlet of the primary or secondary electric furnace is closed, and it is not possible to constantly supply a uniform molten blast furnace slag to the cotton mill. In addition, if auxiliary materials such as undissolved silica sand remain on the molten blast furnace slag, a phenomenon referred to as so-called shelf hanging occurs. At this time, auxiliary materials such as silica sand suspended on the shelf remain undissolved, react with the molten blast furnace slag, and do not mix.
【００２２】また、上記の如く、未製綿化物１３を処理
するとき、粉砕機９中では粉砕に併せて乾燥し、水分を
除去するのが好ましい。このために、１次電気炉３の排
ガスをライン１６によって粉砕機９に導入し、乾燥状態
で粉砕する。すなわち、製綿機５で製綿するときに、シ
ョットやウェストなどには水分が１０〜２０％程度含ま
れ、そのまま副原料として用いることは不可能である。
更に、この乾燥において、１次電気炉３からの排ガスの
みでは不十分であるときには、例えば、コ−クス炉など
のガス源１５からの高温ガスを導入することもできる。Further, as described above, when the unprocessed cotton material 13 is treated, it is preferable to dry it in the crusher 9 together with the crushing to remove water. For this purpose, the exhaust gas of the primary electric furnace 3 is introduced into the crusher 9 via a line 16 and crushed in a dry state. That is, when the cotton is produced by the cotton producing machine 5, the shot, the waist, and the like contain about 10 to 20% of water, and cannot be used as an auxiliary material as it is.
Further, in this drying, when the exhaust gas from the primary electric furnace 3 alone is not sufficient, for example, a high-temperature gas from a gas source 15 such as a coke oven can be introduced.
【００２３】[0023]
【実施例】 図２に示すように、ホッパ８から、副原料
としてケイ砂８００ｋｇ／時、未製綿化物として水分１
５％を含むショットやウェスト２５０ｋｇ／時を粉砕機
９に供給し、１次電気炉３からの排ガスを導入して、全
てを径５００μ以下の微粉末に粉砕した。EXAMPLE As shown in FIG. 2, silica sand 800 kg / h as an auxiliary material and water 1
250 kg / hour of a shot or waist containing 5% was supplied to the pulverizer 9, and the exhaust gas from the primary electric furnace 3 was introduced to pulverize the whole into fine powder having a diameter of 500 μm or less.
【００２４】これを窒素ガスで流動化し、１次電気炉３
中に吹込んで成分調整し、２次電気炉６で温度調整した
のちに、製綿機５で製綿し、ロックウ−ル繊維を得た。This is fluidized with nitrogen gas and the primary electric furnace 3
After the components were adjusted by blowing into them, the temperature was adjusted in the secondary electric furnace 6, and then the cotton was produced by the cotton mill 5 to obtain rock wool fibers.
【００２５】比較のために、副原料としてケイ砂のみを
９００ｋｇ／時の割合でホッパ８に入れ、他の条件は同
じにして製綿した。For comparison, only silica sand as an auxiliary material was put into the hopper 8 at a rate of 900 kg / hour, and cotton was produced under the same other conditions.
【００２６】この結果、ケイ砂の使用量は約１０％程度
軽減でき、１次電気炉３の電力原単位は１００ｋｗｈ／
時ほど軽減できた。また、製綿されたロックウ−ルもほ
とんど同等であって区別すらつかなかった。As a result, the amount of silica sand used can be reduced by about 10%, and the power consumption of the primary electric furnace 3 is 100 kWh /
I was able to reduce it sometimes. The cotton wool was almost the same and could not be distinguished.
【００２７】[0027]
【発明の効果】以上詳しく説明した通り、本発明は、ロ
ックウ−ル用副原料のケイ砂などとともに未製綿化物を
粉砕し、これを溶融高炉スラグ中に投入して成分調整す
るものである。As described in detail above, the present invention is to pulverize un-cottonized material together with silica sand or the like as an auxiliary material for rock wool, and to pulverize it into molten blast furnace slag to adjust the components. .
【００２８】したがって、未製綿化物は予め成分調整さ
れているため、ケイ砂などに較べて融点が低く、この溶
解が先行してケイ砂などの溶解を促進し、単にケイ砂な
どの原単位が低減できる以外に、電気炉の電力原単位が
大巾に低減できる。[0028] Therefore, since the unmanufactured cotton has a pre-adjusted component, its melting point is lower than that of silica sand or the like. In addition to the above, the electric power consumption of the electric furnace can be greatly reduced.
【図１】本発明方法を実施する際に用いられる未製綿化
物の再利用装置の一例の説明図である。FIG. 1 is an explanatory diagram of an example of an apparatus for reusing unmanufactured cotton used in carrying out the method of the present invention.
【図２】溶融高炉スラグを主原料としてのロックウ−ル
製造装置のフロ−シ−トである。FIG. 2 is a flow chart of a rock wool manufacturing apparatus using molten blast furnace slag as a main raw material.
２ 副原料 ３ １次電気炉 ９ 粉砕機 １３ 未製綿化物 2 Auxiliary raw materials 3 Primary electric furnace 9 Crusher 13 Untreated cotton
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−115138（ＪＰ，Ａ) 特開 昭55−23061（ＪＰ，Ａ) 米国特許5100453（ＵＳ，Ａ) 米国特許4145202（ＵＳ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C03B 37/00 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-3-115138 (JP, A) JP-A-55-23061 (JP, A) US Patent 5,100,453 (US, A) US Patent 4,140,202 (US, A) (58) Field surveyed (Int. Cl. 7 , DB name) C03B 37/00
Claims (3)
ロックウ−ルを製造する際に発生する未製綿化物をロッ
クウ−ル製造用副原料に加えて粉砕して微粒子化し、こ
の微粒子を電気炉に供給して、この電気炉内に供給され
ている溶融高炉スラグとともに溶解、成分調整して製綿
化することを特徴とする高炉からの高炉溶融スラグを製
綿化してロックウ−ルを製造する方法。A blast furnace molten slag from a blast furnace is made into cotton to produce rock wool, and non-cottonized material generated when the rock slag is produced is added to a rock wool producing auxiliary material and pulverized into fine particles. The blast furnace melt slag from the blast furnace is fed to an electric furnace, and melted and adjusted with the molten blast furnace slag supplied in the electric furnace to produce cotton. How to make.
用副原料の粉砕時に、前記電気炉からの排ガスを導入し
て粉砕することを特徴とする請求項１記載の高炉からの
高炉溶融スラグを製綿化してロックウ−ルを製造する方
法。2. The blast furnace melting from a blast furnace according to claim 1, wherein the pulverization is performed by introducing exhaust gas from the electric furnace during the pulverization of the unmanufactured cotton and the auxiliary material for rock wool production. A method for producing rock wool by converting slag into cotton.
料ならびに前記未製綿化物の微粒子を不活性気体のキャ
リヤガスとともに前記電気炉に供給することを特徴とす
る請求項１記載の高炉からの高炉溶融スラグを製綿化し
てロックウ−ルを製造する方法。3. The blast furnace according to claim 1, wherein the pulverized auxiliary material for producing rock wool and the fine particles of the unmanufactured cotton are supplied to the electric furnace together with an inert gas carrier gas. A method for producing rock wool by converting blast furnace molten slag into cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19330192A JP3349525B2 (en) | 1992-06-26 | 1992-06-26 | Method for producing rock wool by converting blast furnace slag from blast furnace into cotton |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19330192A JP3349525B2 (en) | 1992-06-26 | 1992-06-26 | Method for producing rock wool by converting blast furnace slag from blast furnace into cotton |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0616443A JPH0616443A (en) | 1994-01-25 |
| JP3349525B2 true JP3349525B2 (en) | 2002-11-25 |
Family
ID=16305639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19330192A Expired - Fee Related JP3349525B2 (en) | 1992-06-26 | 1992-06-26 | Method for producing rock wool by converting blast furnace slag from blast furnace into cotton |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3349525B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015003842A (en) * | 2013-06-20 | 2015-01-08 | Ｊｆｅロックファイバ−株式会社 | Manufacturing method and manufacturing facility for rock wool |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201200653A (en) * | 2010-06-24 | 2012-01-01 | Hong-Tai Cai | Method of reproducing discarded rock wool |
| CN108585468A (en) * | 2018-04-04 | 2018-09-28 | 沈阳化工大学 | A method of preparing rock wool by raw material of silicon tailings |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4145202A (en) | 1977-03-31 | 1979-03-20 | Ppg Industries, Inc. | Method for reprocessing glass fibers |
| US5100453A (en) | 1991-03-07 | 1992-03-31 | Glasstech, Inc. | Method for recycling scrap mineral fibers |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2980545A (en) * | 1957-10-29 | 1961-04-18 | Dick Co Ab | Water base stencil duplicating ink |
-
1992
- 1992-06-26 JP JP19330192A patent/JP3349525B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4145202A (en) | 1977-03-31 | 1979-03-20 | Ppg Industries, Inc. | Method for reprocessing glass fibers |
| US5100453A (en) | 1991-03-07 | 1992-03-31 | Glasstech, Inc. | Method for recycling scrap mineral fibers |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015003842A (en) * | 2013-06-20 | 2015-01-08 | Ｊｆｅロックファイバ−株式会社 | Manufacturing method and manufacturing facility for rock wool |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0616443A (en) | 1994-01-25 |
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