JPS5817803B2 - Method and device for monitoring the inside of an enclosure - Google Patents
Method and device for monitoring the inside of an enclosureInfo
- Publication number
- JPS5817803B2 JPS5817803B2 JP51078460A JP7846076A JPS5817803B2 JP S5817803 B2 JPS5817803 B2 JP S5817803B2 JP 51078460 A JP51078460 A JP 51078460A JP 7846076 A JP7846076 A JP 7846076A JP S5817803 B2 JPS5817803 B2 JP S5817803B2
- Authority
- JP
- Japan
- Prior art keywords
- screen
- opening
- observation device
- observation
- enclosure
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/24—Test rods or other checking devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
- F27D21/02—Observation or illuminating devices
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2476—Non-optical details, e.g. housings, mountings, supports
- G02B23/2492—Arrangements for use in a hostile environment, e.g. a very hot, cold or radioactive environment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
- F27D25/001—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag comprising breaking tools, e.g. hammers, drills, scrapers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Astronomy & Astrophysics (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Blast Furnaces (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Description
【発明の詳細な説明】
本発明は、囲障の内部、特にこの囲障の内部に存在する
内容物の上面を監視する装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for monitoring the inside of an enclosure, in particular the top surface of the contents present inside this enclosure.
以下の説明は、こめ装置を高炉内の装入物の観測に応用
する場合を中心に行なわれるが、これはもっばら一例と
してのものであって、本発明はこの例に限るものではな
い。The following description will be made mainly of the case where the rice cracking device is applied to observation of charges in a blast furnace, but this is merely an example, and the present invention is not limited to this example.
事実、本発明による装置は、いかなる囲障の内部の観測
にも適用することができる。In fact, the device according to the invention can be applied to observations inside any enclosure.
高炉内部の装入物の上部において生起する現象、たとえ
ば装入物上面の形状の変化、中心部から周囲への表面温
度の分布、高温点または低温帯の形成等々を観察すると
有利であることは知られている。It is advantageous to observe phenomena occurring in the upper part of the charge inside the blast furnace, such as changes in the shape of the top surface of the charge, distribution of surface temperature from the center to the periphery, formation of hot spots or cold zones, etc. Are known.
すなわち、これらがわかれば、コークス、鉱石および溶
剤の割合が適正であること、ならびにこれらの材料が装
入物上面の全体に正しく分布することを条件とする高炉
の適正運転を実現することができる。In other words, if these are known, it is possible to realize proper operation of the blast furnace, provided that the proportions of coke, ore, and solvent are appropriate, and that these materials are distributed correctly throughout the top surface of the charge. .
これらすべてのデータの価値は、充分に信頼し得る装置
によって装入物を正しく観測できるか否かにかかつてい
ることはいうまでもない。It goes without saying that the value of all this data depends on the correct observation of the charge by sufficiently reliable equipment.
もちろん、装入物上方の高炉の内部は、過圧状態（たと
えば２ ｋｇ）の気体が発生することがあり、また実際
には常に多量のダストが存在するので、特別な工夫を講
じない限り、前記の条件を満足させるのは容易でない。Of course, gases under overpressure (e.g. 2 kg) may occur inside the blast furnace above the charge, and in practice there is always a large amount of dust, so unless special measures are taken, It is not easy to satisfy the above conditions.
この高炉内部の装入物の観測に関しては、事実上固定し
た装置の内部で掃引を行なう方式や、あるいは遠隔測定
方式などを中心に、すでに多種の装置が考案されている
。A variety of devices have already been devised for observing the charge inside the blast furnace, mainly using a method that sweeps inside a virtually fixed device, or a remote measurement method.
これらの装置は、大部分、内側が常時清掃されている透
明な材料製の丸窓を通して炉内装入物を観測するもので
ある。These devices mostly view the furnace contents through a round window made of transparent material, the inside of which is constantly cleaned.
これらの丸窓の利用は、高炉内部の背圧が増大してきた
ため、危険なものとなった。The use of these portholes became dangerous as the back pressure inside the blast furnace increased.
さらに、これらの丸窓は、スクレーピング（拭き取り）
によって清掃するのがむずかしい。Additionally, these round windows can be scraped (wiped).
Difficult to clean due to
さらにまた、清掃の終りに丸窓の内面に気体を吹付ける
のも容易でない。Furthermore, it is not easy to blow gas onto the inner surface of the round window at the end of cleaning.
こうして、これらの装置は、対物レンズと、観測ができ
るように高炉壁部に設ける丸窓用開口部の両方を常に清
浄に保つという面で若干の難点がある。Thus, these devices have some difficulty in keeping both the objective lens and the porthole opening in the blast furnace wall clean at all times to allow observation.
本発明は、これらの欠点を特に有効に取除くことを可能
にする装置を対象とする。The present invention is directed to a device that makes it possible to obviate these drawbacks particularly effectively.
本発明の対象である装置は、下記のものを具備している
ことを特徴とする。The device that is the subject of the present invention is characterized by having the following:
ａ）観測側の端部においてきわめて小さな（できれば１
０ｒｒｔｍ以下）、かつ開角の大きな４０°以上（でき
れば６０°以上）開口部で終っている観測装置。a) Very small (preferably 1
0rrtm or less) and ends in an aperture with a large opening angle of 40° or more (preferably 60° or more).
ｂ）上記ａ）の装置の前にかつそれに近接して配置され
ており、かつ、観測装置の端部開口と向かい合うきわめ
て小さな（できれば１０闘以下）開口部を有するスクリ
ーン。b) A screen arranged in front of and close to the device of a) above and having a very small opening (preferably less than 10 mm) facing the end opening of the observation device.
Ｃ）圧縮ガスを観測装置とスクリーンの間に保たれた間
隙に通し、次にスクリーンの開口部に通すための装置。C) A device for passing compressed gas through the gap maintained between the observation device and the screen and then through the openings in the screen.
ｄ）観測装置と反対側のスクリーンの面の、少なくとも
開口部を含む部分を周期的または連続的に清掃するため
の装置。d) A device for periodically or continuously cleaning at least the part of the surface of the screen opposite to the observation device that includes the opening.
このような構造を有する本発明の装置は、たとえば囲障
内部で生起する現象の観測、またはこの囲障の内容物の
温度の測定に用いることができる。The device of the present invention having such a structure can be used, for example, to observe phenomena occurring inside the enclosure or to measure the temperature of the contents of this enclosure.
その場合、この装置を、囲障壁部に設けた適当な寸法の
オリフィスに密閉式に取付けるだけでよい３この囲障は
、高炉あるいは任意の種類の炉であってよい。In that case, it is only necessary to mount the device in a closed manner in a suitably dimensioned orifice in the enclosure.3 This enclosure may be a blast furnace or any type of furnace.
観測装置については可視スペクトルまたは赤外線に適し
たテレビカメラに組合わせた１個の対物レンズ、もしく
は掃引式または非掃引式の他の適当な装置（テレメータ
、高温計など）のような簡単な規準装置でよい。For observation equipment, a simple reference device such as an objective lens combined with a television camera suitable for the visible spectrum or infrared, or other suitable swept or non-swept equipment (telemeter, pyrometer, etc.) That's fine.
本発明の有利な一実施態様によれば、この装置はさらに
、それを観測装置の出口オリフィスの近くに位置する１
つの点を中心に回転させるための装置を具備している。According to an advantageous embodiment of the invention, the device further comprises:
It is equipped with a device for rotation around two points.
この実施態様においては、観測装置の規準軸をいかなる
方向にも随意に回転させることができるが、この場合本
発明による装置は、密閉した箱の中に収納する。In this embodiment, the reference axis of the observation device can be rotated in any direction at will, but the device according to the invention is then housed in a closed box.
添付の図は、実尺によるものでなく、また本発明を限定
するものでもないが、この図を見れば、本発明の装置を
いかに設計できるかを理解することができる。The accompanying drawing is not to scale and is not intended to limit the invention, but it provides an understanding of how the device of the invention may be designed.
この図は、高炉装入物の上面を検査するための観測装置
の端部の縦断面図を示す。This figure shows a longitudinal section through the end of an observation device for inspecting the top surface of the blast furnace charge.
この図において、対物レンズの円筒状端部を１で示す。In this figure, the cylindrical end of the objective is indicated at 1.
高炉の壁部は２、高炉の内部は３で表わす。The wall of the blast furnace is represented by 2, and the inside of the blast furnace is represented by 3.
対物レンズ１は、内部レンズを配装した望遠鏡型の光学
装置よりなるもので、図面は単にレンズを収蔵する筒体
の外郭形状のみを側面図的に示しである。The objective lens 1 is comprised of a telescope-type optical device equipped with an internal lens, and the drawing only shows the outer shape of a cylindrical body housing the lens in a side view.
筒体は、もちろん金属製であるのがよいが、セラミック
その他の強固な耐火性の材料であることも可能である。The cylinder is preferably made of metal, but it can also be made of ceramic or other strong, refractory materials.
それらの総称である対物レンズ１は、耐火物よりなる、
たとえば金属もしくはセラミックからなる円筒状の２個
のジャケット４および５によって囲まれており、これら
のジャケットの出口側端部は、６および７において環体
８に溶接されている。The objective lens 1, which is a general term for them, is made of refractory material.
It is surrounded by two cylindrical jackets 4 and 5, made of metal or ceramic, for example, whose outlet ends are welded at 6 and 7 to the annulus 8.
対物レンズの端部は、この環体８と（ねじ締め）によっ
て一体に形成されたスクリーンに設けである小開口と向
かい合う位置に瞳孔部９を有する。The end of the objective lens has a pupil portion 9 at a position facing a small aperture provided in a screen integrally formed with this ring 8 (by screwing).
この瞳孔部９は、対物レンズ１が外形図として示されて
いるために図面には現われないが、先端の小さな平坦部
の真中に、軸線方向に小さく穿たれている。Although this pupil portion 9 does not appear in the drawing because the objective lens 1 is shown as an outline drawing, it is formed in a small hole in the axial direction in the center of a small flat portion at the tip.
つまり、開口部１０と相対応しているものである。That is, it corresponds to the opening 10.
この瞳孔部９は、少なくとも４０°の規準を可能にする
が、このこと自体は開口部１０によって可能になってい
る。This pupil 9 allows a reference of at least 40°, which is itself made possible by the aperture 10.
図示してない供給装置によって、乾燥したかつ油分を除
いた圧縮空気を、矢印１２の方向において対物レンズ１
とジャケット４の間に通し、次いで矢印１３の方向にお
いて対物レンズとスクリーンの対物レンズの反対側の面
との間に確保された狭い間隙に通すことができる。A supply device (not shown) supplies dry and oil-free compressed air to the objective lens 12 in the direction of arrow 12.
and jacket 4 and then through a narrow gap maintained between the objective and the surface of the screen opposite the objective in the direction of arrow 13.
この圧縮空気は、開口部１０を通って、それを掃引しな
がら炉内に入る。This compressed air enters the furnace through the opening 10 and sweeps it.
なお、スクリーン１１は、セラミックとか耐火煉瓦のよ
うなもので造るのがいちばんよいが、不鋼鋼を耐火物質
の層で被ったものでもよい。The screen 11 is best made of ceramic or refractory bricks, but it may also be made of non-steel covered with a layer of refractory material.
環体８とスクリーン１１との内面は、同一半面１４内に
ある。The inner surfaces of the ring 8 and the screen 11 lie within the same half plane 14.
ロッド１６によりこのロッドの軸１７に后って往復運動
で行なうように駆動されるスクレーパ１５によって、孔
部１０の周りにおけるスクリーンの適当な清掃が行なわ
れる。Adequate cleaning of the screen around the holes 10 is effected by a scraper 15 which is driven in a reciprocating motion by a rod 16 behind the axis 17 of this rod.
ロッド１６自体は、従来公知の方法によって駆動するこ
とができる。The rod 16 itself can be driven by conventionally known methods.
装置の全体は、クランプ１８、ボルト１９等々を用いる
従来公知の方法によって、炉壁２に設けた孔部２０の周
囲に密閉式に取付ける。The entire apparatus is mounted in a sealed manner around a hole 20 in the furnace wall 2 by conventional methods using clamps 18, bolts 19, etc.
本発明では、上に述べたような光学的観測または測定装
置を用いるが、乾燥した圧縮気体の流れを前記観測装置
とスクリーンとの間に通し、この気体を観測装置の反対
側に位置する前記開口部より逃がし、規準ずべき帯域と
向かい合うスクリーンの側面をたとえばスクレーピング
（拭き取り）によって清掃し、一方この間に、前記開口
部とその付近から前記側面に付着する異物を定期的に除
去することを主な特徴とする。The present invention uses an optical observation or measurement device as described above, but passes a stream of dry, compressed gas between the observation device and a screen, and directs this gas to the optical observation or measurement device located on the opposite side of the observation device. The main purpose is to clean, for example by scraping, the side surface of the screen that escapes from the opening and faces the zone to be referenced, and during this period, foreign matter adhering to the side surface is periodically removed from the opening and its vicinity. The characteristics are as follows.
これら２つの清掃作用の組合せによって、観測装置の端
部を常に正常に保ち、開口部全体を自由に保守すること
ができ、その結果、観測装置からの観測角度の全体を連
続的に利用することができることが確認された。The combination of these two cleaning actions makes it possible to keep the end of the observation device always in good order and to maintain the entire opening freely, so that the entire observation angle from the observation device can be continuously utilized. It has been confirmed that this is possible.
本発明によらない場合、観測装置と反対側のスクリーン
の面には、前記開口部付近にあらゆる種類の異物が付着
することにより、観測装置の端部がかなり遮蔽されてし
まうのが実情である。Without the present invention, the actual situation is that all kinds of foreign matter adheres to the surface of the screen opposite to the observation device in the vicinity of the opening, so that the end of the observation device is considerably blocked. .
本発明によれば、圧力気体の供給と前記の清掃作業を連
続的にも断続的にも行なうことができるが、できれば、
気体の供給は連続的に、一方情掃は断続的に行なう方が
よい。According to the present invention, the supply of pressurized gas and the cleaning operation described above can be performed either continuously or intermittently, but if possible,
It is better to supply the gas continuously, while sweeping the gas intermittently.
このようにすれば、清掃装置によって対物レンズが遮蔽
される時間が最小限に抑えられ、きわめて良好な結果が
得られる。In this way, the time during which the objective lens is obscured by the cleaning device is minimized and very good results are obtained.
また本発明においては、圧縮気体の流量を高炉の運転速
度に応じて調整する、たとえば、低速運転のときは低流
量（約１ＯＮｍ”／ｈ）、定常運転のときは高流量（３
０〜４０ Ｎ ｍ／ ｈ ）というように調整すると有
利である。Furthermore, in the present invention, the flow rate of the compressed gas is adjusted according to the operating speed of the blast furnace.
0-40 N m/h).
図面は本発明を実施するのに適当な装置の１例を示した
模式的断面図である。
この図において、１・・・・・・対物レンズ、２・・・
・・・高炉の壁部、３・・・・・・高炉の内部、４，５
・・・・・・ジャケット、６，７・・・・・・ジャケッ
トの出口側端部、８・・・・・・環体、９・・・・・・
瞳孔部、１０・・・・・・開口部、１１・・・・・・ス
クリーン、１２，１３・・・・・・ガス通路、１４・・
・・・・平面、１５・・・・・・スクレーパ、１６・・
・・・・ロッド、１８・・・・・・クランプ。The drawing is a schematic cross-sectional view showing an example of an apparatus suitable for carrying out the present invention. In this figure, 1...objective lens, 2...
...Wall of blast furnace, 3...Inside of blast furnace, 4,5
... Jacket, 6, 7 ... Outlet end of jacket, 8 ... Ring body, 9 ...
Pupil section, 10...Aperture, 11...Screen, 12, 13...Gas passage, 14...
...Flat surface, 15...Scraper, 16...
...Rod, 18...Clamp.
Claims (1)
間に通し、この気体流を観測装置と反対側の前記開口部
から逃がし、かつ、観測すべき帯域の方を向いたスクリ
ーンの側面をスクレーピングによって清掃するため、 ａ）観測側の端部においてきわめて小さな、かつ開角の
大きな（４０°以上できれば′６０°以上）開口部で終
っている観測装置と、 ｂ）上記ａ）の観測装置の前にかつそれに近接して配置
されており、かつ、観測装置の端部開口と向かい合った
きわめて小さな開口部を有するスクリーンと、 Ｃ）圧縮ガスを観測装置とスクリーンとの間に保たれた
間隙に通し、次にスクリーンの開口部に通すための通路
と、 ｄ）観測装置と反対側のスクリーンの面の、少なくとも
前記開口部を含む部分を周期的または連続的に清掃する
ための装置と、を備えてなる囲障の内部を監視する装置
。[Claims] 1. A flow of dry compressed gas is passed between the observation device and the screen, and the gas flow escapes through the opening on the opposite side of the observation device and is directed toward the zone to be observed. In order to clean the side surface of the screen by scraping, a) an observation device that ends in an extremely small aperture with a large opening angle (40° or more, preferably 60° or more) at the end on the observation side, and b) a. C) a screen placed in front of and in close proximity to the observation device of C) and having a very small opening opposite the end opening of the observation device; a passage for passage through the maintained gap and then through an opening in the screen; d) for periodically or continuously cleaning at least the part of the face of the screen opposite the observation device containing said opening; A device for monitoring the inside of an enclosure comprising:
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE830896 | 1975-07-01 | ||
| BE830895 | 1975-07-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS527307A JPS527307A (en) | 1977-01-20 |
| JPS5817803B2 true JPS5817803B2 (en) | 1983-04-09 |
Family
ID=25657599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP51078460A Expired JPS5817803B2 (en) | 1975-07-01 | 1976-07-01 | Method and device for monitoring the inside of an enclosure |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS5817803B2 (en) |
| GB (1) | GB1495229A (en) |
| IT (1) | IT1071206B (en) |
| LU (1) | LU75258A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59182214U (en) * | 1983-05-23 | 1984-12-05 | 千田 晃久 | accessories |
| JPH0349003U (en) * | 1989-09-06 | 1991-05-13 |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE8002773L (en) * | 1980-04-11 | 1981-10-12 | Erik Allan Lindkvist | SAFETY DEVICE |
| DE3321028A1 (en) * | 1982-06-17 | 1983-12-22 | Smiths Industries Public Ltd. Co., London | OPTICAL COMPONENT |
| DD219059A3 (en) * | 1982-09-14 | 1985-02-20 | Freiberg Brennstoffinst | PERISKOP FOR HIGH-TEMPERATURE REACTORS |
| GB8829695D0 (en) * | 1988-12-20 | 1989-02-15 | British Steel Plc | Observation of furnace interiors |
| FR2771031A1 (en) * | 1997-11-17 | 1999-05-21 | Claude Philippe | Cleaning procedure for transparent plate exposed to smoke and infrared rays |
| DE102007058446A1 (en) * | 2007-12-05 | 2009-06-10 | Siemens Ag | Oven and cleaning device for a stove |
| CN102914158B (en) * | 2011-08-01 | 2014-10-15 | 中国石油化工集团公司 | Observation hole lining of ceramic fiber modules |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4916325U (en) * | 1972-05-13 | 1974-02-12 | ||
| JPS5178459A (en) * | 1974-12-27 | 1976-07-08 | Ikuo Tajima | Shishumishinniokeru shishuwakunohojisochi |
-
1976
- 1976-06-22 IT IT6852176A patent/IT1071206B/en active
- 1976-06-28 LU LU75258A patent/LU75258A1/xx unknown
- 1976-07-01 GB GB2742776A patent/GB1495229A/en not_active Expired
- 1976-07-01 JP JP51078460A patent/JPS5817803B2/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4916325U (en) * | 1972-05-13 | 1974-02-12 | ||
| JPS5178459A (en) * | 1974-12-27 | 1976-07-08 | Ikuo Tajima | Shishumishinniokeru shishuwakunohojisochi |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59182214U (en) * | 1983-05-23 | 1984-12-05 | 千田 晃久 | accessories |
| JPH0349003U (en) * | 1989-09-06 | 1991-05-13 |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1495229A (en) | 1977-12-14 |
| JPS527307A (en) | 1977-01-20 |
| IT1071206B (en) | 1985-04-02 |
| LU75258A1 (en) | 1977-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5817803B2 (en) | Method and device for monitoring the inside of an enclosure | |
| US7719564B2 (en) | Plug-in kiln video camera and image processing system | |
| DE102005041004A1 (en) | Monitoring procedure for formation of deposits in combustion chamber, involves comparing predetermined surface temperature and thickness of combustion chamber walls with wall surface temperature and thickness measured using infrared cameras | |
| US10747091B2 (en) | Method and apparatus for the inspection or operational observation of dangerous, harsh spaces or spaces with hostile environmental conditions | |
| US4560591A (en) | Apparatus for and method of spraying for forming refractories | |
| US4112763A (en) | Inspecting the interior of an enclosure | |
| US3475859A (en) | Device for observing the contents of an enclosure | |
| KR930007861A (en) | Ceramic welding method and apparatus | |
| CA1066535A (en) | Radiation viewer for inspecting an enclosure | |
| JPH10103934A (en) | Profile measuring method and apparatus for charge | |
| JPH07216422A (en) | Device for monitoring furnace hole of blast furnace | |
| US3074705A (en) | Rotary kiln and method of burning material therein | |
| JPS648276B2 (en) | ||
| US3276442A (en) | Furnace observation port | |
| SU536009A2 (en) | Plant for the production of metal powders | |
| FR2316564A1 (en) | Cleaning of inspection tube on blast furnace - using gas blown across orifice, and scraper for dust removal | |
| SU987346A1 (en) | Device for remote control of furnace internal surface | |
| GB1586674A (en) | Device for inspecting the interior of an enclosure | |
| JP2551601Y2 (en) | Dust hood for detector | |
| CA1092851A (en) | Apparatus for measuring the surface temperature of the body | |
| SU87684A1 (en) | A method for determining the resistance of surface coatings of a metallic and oxide nature to erosion and an installation for implementing this method | |
| SU499481A1 (en) | Sealing device for rotary kiln | |
| SU783556A1 (en) | Apparatus for vibration cleaning of tubular surfaces from outer deposits | |
| JPH0643156Y2 (en) | Measuring vehicle for furnace temperature measurement of coke oven | |
| SU685935A1 (en) | Pyrometer |