JPH0624873A - Method for impregnating refractory with pitch - Google Patents
Method for impregnating refractory with pitchInfo
- Publication number
- JPH0624873A JPH0624873A JP17998492A JP17998492A JPH0624873A JP H0624873 A JPH0624873 A JP H0624873A JP 17998492 A JP17998492 A JP 17998492A JP 17998492 A JP17998492 A JP 17998492A JP H0624873 A JPH0624873 A JP H0624873A
- Authority
- JP
- Japan
- Prior art keywords
- pitch
- impregnation
- impregnation tank
- tank
- refractory
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/47—Oils, fats or waxes natural resins
- C04B41/478—Bitumen, asphalt, e.g. paraffin
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Ceramic Products (AREA)
Abstract
(57)【要約】
【目的】 耐火物のピッチ含浸時の工程を一つの含浸槽
内で全て行なうことができ、公害発生を最少限におさえ
られ、しかも作業性がよく経済的な耐火物のピッチ含浸
方法を提供する。
【構成】 被含浸物を常温で含浸槽１に挿入の後、所定
の温度まで加熱した含浸槽１内を真空状態として、加熱
状態のピッチＰで含浸槽１内を充満した後、不活性ガス
で槽内を所定圧力まで加圧し、所定時間保持の上、含浸
槽１内のピッチＰを排出した状態で槽内を冷却して、ピ
ッチ含有耐火物を取出す。
(57) [Summary] [Purpose] A refractory material that can perform pitch impregnation of refractory materials all in a single impregnation tank, minimizes pollution, and has good workability and is economical. A pitch impregnation method is provided. [Constitution] After the impregnating object is inserted into the impregnation tank 1 at room temperature, the inside of the impregnation tank 1 heated to a predetermined temperature is put into a vacuum state, and the impregnation tank 1 is filled with the heated pitch P, and then an inert gas Then, the inside of the tank is pressurized to a predetermined pressure and kept for a predetermined time, and then the inside of the impregnation tank 1 is cooled while the pitch P is discharged, and the pitch-containing refractory is taken out.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、各種耐火物の気孔にピ
ッチを含浸させて、耐火度と耐久力を増大させるピッチ
含有耐火物を形成する過程における耐火物のピッチ含浸
方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pitch impregnation method for a refractory material in the process of impregnating pores of various refractory materials with pitch to form a pitch-containing refractory material having increased fire resistance and durability. .
【０００２】[0002]
【従来の技術】ピッチを含浸させた耐火煉瓦や、ルツボ
などピッチ含有の耐火物を形成するため、耐火材などの
粉末を混和しプレスにより圧縮成形した耐火物の素地の
気孔中に、ピッチを含浸させ、その上で焼成炭化させて
耐火度と耐久力の高いピッチ含有の耐火物を形成する際
の、耐火物中にピッチを含浸させる従来の方法として
は、含浸させる耐火物を、例えば２００〜２３０℃迄加
熱する加熱炉を使用する工程と、加熱された耐火物を含
浸のため加熱状態のピッチを充満した含浸槽に入れる工
程と、そして含浸された耐火物を冷却装置内で冷却する
工程とを、各工程それぞれ別の装置で行なう方式が用い
られていた。2. Description of the Related Art In order to form refractory bricks impregnated with pitch and refractory materials containing pitch such as crucibles, powder is mixed with refractory materials and compression molded by pressing to form pores in the pores of the base material of the refractory material. As a conventional method of impregnating a pitch into a refractory when impregnating and firing and carbonizing the same to form a pitch-containing refractory having high fire resistance and durability, the refractory to be impregnated is, for example, 200 Using a heating furnace to heat up to ~ 230 ° C, placing the heated refractory in an impregnation tank filled with a heated pitch for impregnation, and cooling the impregnated refractory in a cooling device. A method in which the steps and the steps are performed by different devices has been used.
【０００３】しかしながら、上記の各工程の作業は、い
ずれも衛生状態が悪いため遠隔操作で行なう必要があ
り、排煙をフードで導出し、その排煙による公害の防止
対策のため大がかりな設備を要するので、設備費などが
嵩み、作業性も悪いという問題があった。However, since the work in each of the above-mentioned steps is poor in hygiene, it is necessary to carry out the operation remotely, so that the smoke exhaust is led out through the hood and a large-scale facility is installed to prevent pollution due to the smoke exhaust. Therefore, there is a problem that the facility cost is high and the workability is poor.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、前記従来の
問題点を解決するためになされたものであり、耐火物の
ピッチ含浸時の工程を一つの含浸槽内で全て行なうこと
ができ、公害発生が最少限におさえられ、しかも作業性
がよく、経済的な耐火物のピッチ含浸方法を提供するこ
とを目的としている。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and the steps of impregnating the pitch of a refractory can be performed in a single impregnation tank. It is an object of the present invention to provide an economical pitch impregnation method for refractory materials with minimum pollution, good workability, and economical efficiency.
【０００５】[0005]
【課題を解決するための手段】上記の目的を達成するた
め、本発明の耐火物のピッチ含浸方法は、含浸させる耐
火物を含浸槽に挿入の後、含浸槽内を所定温度まで加熱
の上で真空状態にして、加熱状態のピッチで含浸槽を充
満し、窒素などの不活性ガスで含浸槽内を所定圧力まで
加圧し、所定時間保持の上、含浸槽内のピッチを排出し
た状態で含浸槽内を徐々に冷却して、ピッチ含有耐火物
を取り出すことを特徴としたものである。In order to achieve the above object, the pitch impregnation method of the refractory material according to the present invention comprises inserting the refractory material to be impregnated into the impregnation tank and then heating the inside of the impregnation tank to a predetermined temperature. In a vacuum state, fill the impregnation tank with a heated pitch, pressurize the impregnation tank to a predetermined pressure with an inert gas such as nitrogen, hold for a predetermined time, and then discharge the pitch in the impregnation tank. It is characterized in that the pitch-containing refractory is taken out by gradually cooling the inside of the impregnation tank.
【０００６】[0006]
【作用】上記のピッチ含浸方法によれば、含浸槽内に常
温で挿入された耐火物はまず昇温され、加熱状態で槽内
を真空にし、加熱状態のピッチをその槽内に導入充満さ
せた後、所定の圧力迄加圧することにより、耐火物の気
孔内に真空状態でピッチを容易に含浸させることがで
き、またピッチを槽内から排出させ、冷却させること
で、一つの含浸槽内で一連の工程の全てを行なうことが
できる。According to the pitch impregnation method described above, the refractory inserted in the impregnation tank at room temperature is first heated, and the inside of the tank is evacuated in a heated state to introduce and fill the heated pitch into the tank. After that, the pitch can be easily impregnated into the pores of the refractory material in a vacuum state by pressurizing it to a predetermined pressure. Can perform all of the series of steps.
【０００７】[0007]
【実施例】以下図面を参照して本発明の含浸方法を適用
して耐火物のピッチ含浸作業を行なう装置の一実施例を
説明する。図面は、上記含浸装置のフローシートであ
り、含浸させる耐火物は常温で含浸槽１に挿入されるよ
うになっており、この含浸槽１内を加熱するため熱媒ボ
イラー２と、含浸槽１内を徐々に冷却するための水Ｗを
媒体とした熱交換器３が設けられている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an apparatus for performing pitch impregnation work of a refractory by applying the impregnation method of the present invention will be described below with reference to the drawings. The drawing shows a flow sheet of the above-mentioned impregnation apparatus, in which the refractory to be impregnated is inserted into the impregnation tank 1 at room temperature, and the heating medium boiler 2 and the impregnation tank 1 are used to heat the inside of the impregnation tank 1. A heat exchanger 3 using water W as a medium for gradually cooling the inside is provided.
【０００８】また、熱媒ボイラー２からの熱媒体Ｍとし
て、この実施例では油を使用し、含浸槽１の周囲にはこ
の加熱油が循環する加熱部５が設けられ、またその循環
経路には膨張タンク６を設けている。一方、含浸槽１内
を真空にするために、真空ポンプ７が設けられ、その管
路には、含浸槽１内に不活性ガス、例えば窒素Ｎ2 を充
満させるための窒素供給管８が接続されており、真空弁
９および窒素弁１０がそれぞれ配設されている。Also, oil is used as the heat medium M from the heat medium boiler 2 in this embodiment, and a heating section 5 for circulating this heating oil is provided around the impregnation tank 1, and its circulation path is also provided. Has an expansion tank 6. On the other hand, a vacuum pump 7 is provided to make the inside of the impregnation tank 1 a vacuum, and a nitrogen supply pipe 8 for filling the inside of the impregnation tank 1 with an inert gas, for example, nitrogen N 2 , is connected to the vacuum pump 7. The vacuum valve 9 and the nitrogen valve 10 are provided respectively.
【０００９】次に、貯溜槽１１の周囲にはピッチＰを加
熱するため、熱媒ボイラー１２から熱媒Ｎを循環させる
加熱部１３が設けられ、この貯溜槽１１にピッチＰを供
給する受入れ槽１４もこの熱媒ボイラー１２からの熱媒
体Ｎで熱交換により加熱されるようになっており、ま
た、加熱したピッチＰを含浸槽１内に充満する際には貯
溜槽１１内に不活性ガス、例えば窒素ガスＮ2 を供給す
るため窒素供給管８と窒素弁１０が設けられている。Next, in order to heat the pitch P around the storage tank 11, a heating section 13 for circulating the heat medium N from the heat medium boiler 12 is provided, and a receiving tank for supplying the pitch P to the storage tank 11. 14 is also designed to be heated by heat exchange with the heat medium N from this heat medium boiler 12, and when the impregnation tank 1 is filled with the heated pitch P, an inert gas is stored in the storage tank 11. For example, a nitrogen supply pipe 8 and a nitrogen valve 10 are provided to supply nitrogen gas N 2 .
【００１０】なお、図中の１５で示すのはそれぞれフィ
ルターであり、１６で示すのは開閉弁である。次に、上
記の構成からなるこの実施例の含浸装置により耐火物を
含浸する工程について説明すると、まず、含浸させる耐
火物をパレットなどに積んで常温で含浸槽１に挿入の
後、含浸槽１を熱媒ボイラー２からの約３４０℃の熱媒
体Ｍで加熱し、被含浸物である耐火物を約２００から２
３０℃まで昇温させる。In the figure, reference numeral 15 is a filter, and 16 is an on-off valve. Next, the step of impregnating the refractory material with the impregnating apparatus of this embodiment having the above-described structure will be described. First, the refractory material to be impregnated is loaded on a pallet or the like and inserted into the impregnation tank 1 at room temperature, and then the impregnation tank 1 Is heated with the heat medium M from the heat medium boiler 2 at about 340 ° C., and the refractory to be impregnated is heated to about 200 to 2
Raise the temperature to 30 ° C.
【００１１】上記の加熱を約１０時間行なった後、含浸
槽１内の空気を排除するため、真空弁９を開けて真空ポ
ンプ７により真空として、貯溜槽１１内の約２００から
２３０℃まで加熱されたピッチＰを約２kg／cm2 圧の窒
素Ｎ2 で加圧し、窒素弁１０を開けることで含浸槽１内
に充満させる。ピッチＰが充満した含浸槽１内に窒素弁
１０を開けることで窒素供給管８からの不活性ガスであ
る窒素Ｎ2 により１６kg／cm2 まで加圧するが、この加
圧する圧は、被含浸物や加圧時間により適宜決定される
ものであり、この状態で所定時間保持することにより、
被含浸物である耐火物の気孔内にピッチを浸入させるこ
とができるが、この含浸時間にはこの実施例では約４時
間を要している。After performing the above heating for about 10 hours, in order to remove the air in the impregnation tank 1, the vacuum valve 9 is opened and a vacuum is applied by the vacuum pump 7 to heat from about 200 to 230 ° C. in the storage tank 11. The pitch P thus formed is pressurized with nitrogen N 2 having a pressure of about 2 kg / cm 2 , and the impregnation tank 1 is filled with the nitrogen valve 10 by opening it. By opening the nitrogen valve 10 in the impregnation tank 1 filled with the pitch P, the pressure is increased to 16 kg / cm 2 by nitrogen N 2 which is an inert gas from the nitrogen supply pipe 8, and this pressure is applied. It is appropriately determined by the pressurizing time and the pressurizing time.
The pitch can be infiltrated into the pores of the refractory that is the object to be impregnated, but this impregnation time requires about 4 hours in this embodiment.
【００１２】その後、含浸槽１内に窒素Ｎ2 を供給する
ことにより充満したピッチＰを貯溜槽１１側に戻した
後、水Ｗを媒体とした熱交換器３により熱媒体Ｍを介し
て徐々に含浸槽１を冷却させるが、この場合の冷却に、
この実施例では約８時間を要しており、冷却後は含浸槽
１からピッチ含有耐火物を取り出し、その後ベーキング
炉などによりさらにそれを炭化させて耐火物の耐火度と
耐久力を増大させる工程に入る。Then, after the pitch P filled with nitrogen N 2 is returned to the storage tank 11 side in the impregnation tank 1, the heat exchanger 3 using water W as a medium gradually passes through the heat medium M. To cool the impregnation tank 1. For cooling in this case,
In this example, about 8 hours are required, and after cooling, the pitch-containing refractory material is taken out from the impregnation tank 1 and then it is further carbonized by a baking furnace or the like to increase the refractory material's fire resistance and durability. to go into.
【００１３】なお、上記の含浸装置には、含浸槽１、貯
溜槽１１、熱交換器３、熱媒ボイラー２および受入れ槽
１４をそれぞれ複数基分設けて、それぞれ配管により接
続して効率よく含浸作業を行なうことが望ましく、例え
ばこの実施例では３基分の各機器を組合せて設けてい
る。The above-mentioned impregnation apparatus is provided with a plurality of impregnation tanks 1, storage tanks 11, heat exchangers 3, heat medium boilers 2 and receiving tanks 14, each of which is connected by a pipe for efficient impregnation. It is desirable to perform the work, and for example, in this embodiment, the devices for three units are provided in combination.
【００１４】[0014]
【発明の効果】以上に説明した本発明の耐火物のピッチ
含浸方法によれば、従来、加熱、含浸および冷却の三つ
の工程を別々の装置で行なっていた全工程を、本発明で
は一つの含浸槽で全て行なうことになり、公害発生を最
少限におさえることができ、しかも作業性が向上して経
済的な含浸作業ができるという効果がある。According to the pitch impregnation method for a refractory material of the present invention described above, all the steps which were conventionally performed by heating the three steps of heating, impregnating and cooling are separated into one step in the present invention. Since all is done in the impregnation tank, there is an effect that the occurrence of pollution can be suppressed to a minimum, workability is improved, and economical impregnation work can be performed.
【図１】本発明の耐火物の含浸方法を適用した含浸装置
の一実施例のフローシートである。FIG. 1 is a flow sheet of an embodiment of an impregnation apparatus to which the refractory impregnation method of the present invention is applied.
１ 含浸槽 ２ 熱媒ボイラ
ー ３ 熱交換器 ７ 真空ポンプ ８ 窒素供給管 １１ 貯溜槽 Ｎ2 窒素 Ｐ ピッチ1 Impregnation tank 2 Heat medium boiler 3 Heat exchanger 7 Vacuum pump 8 Nitrogen supply pipe 11 Storage tank N 2 Nitrogen P pitch
Claims (1)
含浸槽内を所定温度まで加熱し、真空状態にして、加熱
状態のピッチで含浸槽を充満し、不活性ガスで含浸槽内
を所定圧力まで加圧し、所定時間保持の上、含浸槽内の
ピッチを排出した状態で含浸槽内を冷却する耐火物のピ
ッチ含浸方法。1. Inserting a refractory to be impregnated into an impregnation tank,
The inside of the impregnation tank is heated to a predetermined temperature, put in a vacuum state, the impregnation tank is filled with the heated pitch, the inside of the impregnation tank is pressurized to a predetermined pressure with an inert gas, and the inside of the impregnation tank is maintained for a predetermined time. A method for impregnating a pitch of a refractory material in which the inside of an impregnation tank is cooled while the pitch is discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17998492A JP3213383B2 (en) | 1992-07-07 | 1992-07-07 | Pitch impregnation method for refractories |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17998492A JP3213383B2 (en) | 1992-07-07 | 1992-07-07 | Pitch impregnation method for refractories |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0624873A true JPH0624873A (en) | 1994-02-01 |
| JP3213383B2 JP3213383B2 (en) | 2001-10-02 |
Family
ID=16075425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17998492A Expired - Lifetime JP3213383B2 (en) | 1992-07-07 | 1992-07-07 | Pitch impregnation method for refractories |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3213383B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008056531A (en) * | 2006-08-31 | 2008-03-13 | Nippon Steel Corp | Insulating brick, method for producing insulating brick, and fireproof structure |
| US20210047244A1 (en) * | 2019-08-16 | 2021-02-18 | Purdue Research Foundation | Methods, materials systems, and devices for inhibiting infiltration and penetration of molten salts into solid materials |
| CN119879087A (en) * | 2025-01-21 | 2025-04-25 | 中冶焦耐(大连)工程技术有限公司 | Asphalt venting system |
-
1992
- 1992-07-07 JP JP17998492A patent/JP3213383B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008056531A (en) * | 2006-08-31 | 2008-03-13 | Nippon Steel Corp | Insulating brick, method for producing insulating brick, and fireproof structure |
| US20210047244A1 (en) * | 2019-08-16 | 2021-02-18 | Purdue Research Foundation | Methods, materials systems, and devices for inhibiting infiltration and penetration of molten salts into solid materials |
| US11891343B2 (en) * | 2019-08-16 | 2024-02-06 | Purdue Research Foundation | Methods, materials systems, and devices for inhibiting infiltration and penetration of molten salts into solid materials |
| CN119879087A (en) * | 2025-01-21 | 2025-04-25 | 中冶焦耐(大连)工程技术有限公司 | Asphalt venting system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3213383B2 (en) | 2001-10-02 |
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| Date | Code | Title | Description |
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