JPS62293128A - Method and device for continuous measurement of temperature of molten metal - Google Patents
Method and device for continuous measurement of temperature of molten metalInfo
- Publication number
- JPS62293128A JPS62293128A JP61137097A JP13709786A JPS62293128A JP S62293128 A JPS62293128 A JP S62293128A JP 61137097 A JP61137097 A JP 61137097A JP 13709786 A JP13709786 A JP 13709786A JP S62293128 A JPS62293128 A JP S62293128A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- molten metal
- molten steel
- lance
- optical fiber
- 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
- 239000002184 metal Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims description 15
- 238000005259 measurement Methods 0.000 title 1
- 239000013307 optical fiber Substances 0.000 claims abstract description 24
- 230000005855 radiation Effects 0.000 claims abstract description 23
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 20
- 238000002347 injection Methods 0.000 claims abstract description 11
- 239000007924 injection Substances 0.000 claims abstract description 11
- 238000012937 correction Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 abstract description 24
- 239000010959 steel Substances 0.000 abstract description 24
- 238000007664 blowing Methods 0.000 abstract description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 7
- 239000001301 oxygen Substances 0.000 abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 2
- 241000121220 Tricholoma matsutake Species 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000004611 spectroscopical analysis Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/05—Means for preventing contamination of the components of the optical system; Means for preventing obstruction of the radiation path
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0037—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the heat emitted by liquids
- G01J5/004—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the heat emitted by liquids by molten metals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/05—Means for preventing contamination of the components of the optical system; Means for preventing obstruction of the radiation path
- G01J5/051—Means for preventing contamination of the components of the optical system; Means for preventing obstruction of the radiation path using a gas purge
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
- G01J5/0818—Waveguides
- G01J5/0821—Optical fibres
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Radiation Pyrometers (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
〔産業上の利用分野〕
本発明は、ランスから噴出させるガスにより容器内で各
種化学反応を誘起させ、選択的に不純物元素を除去して
昇温する転炉のガス吹錬に供され、溶湯の温度を連続的
に測定する溶湯の連続測温方法及びその装置に関するも
のである。[Detailed description of the invention] 3. Detailed description of the invention [Industrial application field] The present invention induces various chemical reactions in a container with gas ejected from a lance to selectively remove impurity elements. The present invention relates to a continuous temperature measurement method and apparatus for continuously measuring the temperature of molten metal that is subjected to gas blowing in a converter whose temperature increases.
従来、精錬炉等の容器内に収容された溶湯の測温は、操
業者の手作業による測温、或いはサブランス内に設けら
れた熱電対を溶湯に浸漬することによる測温等が行われ
ている。しかし、このような溶湯の測温方法は、間欠的
な測温方法であり、連続的に溶湯温度を知ることができ
ないばかりか、前者の方法にあっては、作業性にも問題
を有することになる。Conventionally, the temperature of molten metal stored in a container such as a smelting furnace has been measured manually by the operator, or by immersing a thermocouple installed in a sublance into the molten metal. There is. However, this method of measuring the temperature of molten metal is an intermittent temperature measurement method, and not only is it not possible to continuously determine the temperature of the molten metal, but the former method also has problems with workability. become.
そこで、このような不都合を解消するために、特開昭６
０−１６５５２６公報に開示された「精錬炉の溶融物測
温装置」、或いは特開昭６０−１０５９２９公報に開示
された「溶融金属の測温方法ｊ等が先に提案されている
。前者は、精錬炉の炉壁適所に貫通口を穿設してこの貫
通口にガス吹込用導管を挿入して固定し、この導管に光
フアイバーケーブルの端面を臨ませて配備し、光フアイ
バーケーブルを介して光学式温度測定器により炉内の溶
融物の温度を測定するようにしたものである。一方、後
者は、第４図に示すように、タンディツシュ２０内の溶
湯２１に消耗型熱電対２２を浸漬して測温すると共に、
中空状の耐熱管２３を介して放射温度計２４にて溶湯を
測温し、これら各測温値を補正演算して溶湯の温度を連
続的に測定するものである。Therefore, in order to eliminate such inconvenience,
``Method for measuring temperature of molten metal in a smelting furnace'' disclosed in Japanese Patent Application Laid-open No. 0-165526 and ``Method for measuring temperature of molten metal J'' disclosed in Japanese Patent Application Laid-open No. 60-105929 were previously proposed. A through-hole is drilled in the furnace wall of the refining furnace at an appropriate location, a gas injection conduit is inserted and fixed into this through-hole, and the end face of the optical fiber cable is placed facing this conduit, and the optical fiber cable is inserted through the refining furnace. The temperature of the molten material in the furnace is measured using an optical temperature measuring device.On the other hand, in the latter method, as shown in FIG. In addition to soaking and measuring temperature,
The temperature of the molten metal is measured by a radiation thermometer 24 through a hollow heat-resistant tube 23, and each of these measured temperature values is corrected and calculated to continuously measure the temperature of the molten metal.
ところが、上記従来の構造では、一定の条件下において
連続的に溶湯の測温を行い得るものの、前者は、第５図
に示すようにパージ用ガスに酸素（０２）以外のガスを
用いたときには、炉壁２５に設けられたガス吹込用の貫
通口２６にマツシュルーム２７と称される生成物が生じ
、このマツシュルーム２７に妨害されて溶湯２８の温度
が測定不可能となる。また、後者は、耐熱管２３に溶損
による消耗が生じ、吹錬中における溶湯の測温が不可能
となる等の欠点を有していた。However, although the conventional structure described above allows the temperature of the molten metal to be measured continuously under certain conditions, as shown in FIG. A product called a pine mushroom 27 is generated in the gas injection through-hole 26 provided in the furnace wall 25, and the molten metal 28 is obstructed by the pine mushroom 27, making it impossible to measure the temperature of the molten metal 28. Furthermore, the latter has the disadvantage that the heat-resistant tube 23 is consumed due to melting damage, making it impossible to measure the temperature of the molten metal during blowing.
本発明は、上記従来の問題点を考慮してなされたもので
あって、確実に連続的な測温を行うことができる溶湯の
連続測温方法及びその装置の提供を目的とするものであ
る。The present invention has been made in consideration of the above-mentioned conventional problems, and aims to provide a method and device for continuous temperature measurement of molten metal that can reliably and continuously measure temperature. .
本第１発明に係る溶湯の連続測温方法は、上記の目的を
達成するために、ランスから噴出されるガスにより精錬
される溶湯の温度を連続的に測定する溶湯の連続測温方
法において、溶湯に消耗型の熱電対を浸漬して測温する
と共に、ランス内に設けた光ファイバーを通じて放射温
度計にて溶湯を測温し、この測温値を上記熱電対の測温
値により補正演算して溶湯の温度を測定するように構成
したことを特徴とするものである。In order to achieve the above object, the continuous temperature measurement method for molten metal according to the first aspect of the present invention is a continuous temperature measurement method for molten metal that continuously measures the temperature of molten metal refined by gas ejected from a lance. A consumable thermocouple is immersed in the molten metal to measure the temperature, and a radiation thermometer is used to measure the temperature of the molten metal through an optical fiber installed in the lance, and this temperature value is corrected and calculated using the temperature value measured by the thermocouple. The device is characterized in that it is configured to measure the temperature of the molten metal.
また本第２発明に係る溶湯の連続測温装置は、上記の目
的を達成するために、ランスから噴出されるガスにより
精錬される溶湯の温度を連続的に測定する溶湯の連続測
温装置において、溶湯に浸漬して測温を行う消耗型の熱
電対と、ランスのガス噴射口に先端部を固定してランス
内に配設され、後端部が放射温度計と接続された光ファ
イバーと、この光ファイバーを通じて得た溶湯の放射光
によって溶湯の測温を行う放射温度計と、上記熱電対の
測温値により放射温度計の測温値を補正演算して溶湯の
温度を測定する補正演算器とを備え、溶湯の連続的な測
温を行うことができるように構成したことを特徴とする
ものである。Further, in order to achieve the above object, there is provided a continuous temperature measuring device for molten metal according to the second invention, which continuously measures the temperature of the molten metal refined by the gas ejected from the lance. , a consumable thermocouple that measures temperature by immersing it in molten metal, and an optical fiber whose tip is fixed to the gas injection port of the lance and placed inside the lance, and whose rear end is connected to a radiation thermometer. A radiation thermometer that measures the temperature of the molten metal using the radiant light of the molten metal obtained through the optical fiber, and a correction calculator that measures the temperature of the molten metal by correcting the temperature value of the radiation thermometer using the temperature value measured by the thermocouple. The device is characterized in that it is configured to be able to continuously measure the temperature of the molten metal.
〔実施例１〕
本発明の一実施例を第１図及び第２図に基づいて説明す
れば、以下の通りである。[Example 1] An example of the present invention will be described below based on FIGS. 1 and 2.
溶湯の連続測温装置は、第１図に示すように、溶鋼２が
収容された転炉１内に、下端部にガス噴射口４ａを有す
る吹錬用ランス４が挿入されている。この吹錬用ランス
４には高圧の酸素（０□）を供給するための図示しない
酸素供給手段が接続されている。上記の溶鋼２上には溶
融スラグ３が生じている。上記吹錬用ランス４内には計
装エアー配管５が配設され、さらにこの計装エアー配管
５内部には光ファイバー６が配設されている。光ファイ
バー６の先端部は、上記吹錬用ランス４のガス噴射口４
ａにおける中心部付近に固定されており、後端部は放射
温度計７に接続されている。As shown in FIG. 1, the continuous temperature measurement device for molten metal includes a blowing lance 4 having a gas injection port 4a at its lower end inserted into a converter 1 containing molten steel 2. This blowing lance 4 is connected to an oxygen supply means (not shown) for supplying high pressure oxygen (0□). Molten slag 3 is generated on the molten steel 2 described above. An instrumentation air pipe 5 is disposed within the blowing lance 4, and an optical fiber 6 is disposed within the instrumentation air pipe 5. The tip of the optical fiber 6 is connected to the gas injection port 4 of the blowing lance 4.
It is fixed near the center at point a, and the rear end is connected to the radiation thermometer 7.
また、転炉１には先端部に熱電対８が配設されたサブラ
ンス９が設けられており、熱電対８は変換器１０と接続
されている。上記放射温度計７及び変換器１０は、放射
温度計７の測温出力を変換器１０の測温出力により補正
演算する補正演算器１１と接続され、この補正演算器１
１は温度表示を行う表示器１２と接続されている。Further, the converter 1 is provided with a sub-lance 9 having a thermocouple 8 disposed at its tip, and the thermocouple 8 is connected to a converter 10 . The radiation thermometer 7 and the converter 10 are connected to a correction calculator 11 that corrects the temperature measurement output of the radiation thermometer 7 using the temperature measurement output of the converter 10.
1 is connected to a display 12 that displays temperature.
上記の構成において、吹錬中における転炉１内の溶鋼２
の温度を連続的に測定する場合には、吹錬用ランス４の
ガス噴射口４ａから酸素供給手段より送出される酸素を
噴出させると同時に、サブランス９の熱電対８を溶鋼２
中に浸漬する。上記ガス噴射口４ａから噴出される高圧
の酸素により、第２図に示すように、溶鋼２上の溶融ス
ラグ３は側方に排除され、溶鋼２の吹錬が行われる。こ
のときには、光ファイバー６の先端部は、その周囲を超
高速で通過する酸素によって溶湯２表面から発生するス
プラッシュ及びフエーム等から保護されると同時に、冷
却される。溶鋼２から放射された放射光は光ファイバー
６を通じて放射温度計７に伝達され、溶鋼２の温度が測
定される。そして、その測温出力が補正演算器１１に送
出される。一方、熱電対８に生じた溶鋼２の温度に相当
する熱起電力は変換器１０を介して補正演算器１１に送
出される。補正演算器１１では、変換器１０から送出さ
れる測温出力により、放射温度計７の測温出力における
放射率を補正して、真の溶！２の温度を表示器１２に表
示させる。以上の過程により、溶鋼２を吹錬しながら溶
ｍ２の測温が連続的に行われる。In the above configuration, the molten steel 2 in the converter 1 during blowing
When continuously measuring the temperature of the molten steel 2, the thermocouple 8 of the sub-lance 9 is connected to the molten steel 2.
immerse in it. As shown in FIG. 2, the molten slag 3 on the molten steel 2 is removed to the side by the high-pressure oxygen ejected from the gas injection port 4a, and the molten steel 2 is blown. At this time, the tip of the optical fiber 6 is protected from splashes, flames, etc. generated from the surface of the molten metal 2 by the oxygen passing around it at an extremely high speed, and at the same time is cooled. Radiant light emitted from the molten steel 2 is transmitted to the radiation thermometer 7 through the optical fiber 6, and the temperature of the molten steel 2 is measured. Then, the temperature measurement output is sent to the correction calculator 11. On the other hand, the thermoelectromotive force generated in the thermocouple 8 and corresponding to the temperature of the molten steel 2 is sent to the correction calculator 11 via the converter 10. The correction calculator 11 corrects the emissivity in the temperature measurement output of the radiation thermometer 7 using the temperature measurement output sent from the converter 10, and calculates the true temperature value! 2 on the display 12. Through the above process, the temperature of the molten steel m2 is continuously measured while blowing the molten steel 2.
〔実施例２〕
本発明の他の実施例を第３図に基づいて以下に説明する
。尚、前記実施例１と同一の機能を有する部材には同じ
符号を付記してその説明を省略する。[Embodiment 2] Another embodiment of the present invention will be described below based on FIG. Incidentally, members having the same functions as those in the first embodiment are given the same reference numerals, and their explanations will be omitted.
本実施例は、本出願人が先に提案した「ガス精練容器内
溶湯の連続分光分析法」を実施するための構成と、本発
明に係る前記第１図に示した構成とを組み合わせたもの
である。即ち、第１図に示した構成に加えて、光フアイ
バー６内に導かれた光を分割して取り出すハーフミラ−
１３、このハーフミラ−１３と分光分析Ｈ１４及びレー
ザー発振器１５とを接続する光ファイバー６ａ、光ファ
イバー６ａを通じて得た光により溶鋼２の成分を分析す
る分光分析器１４、レーザー発振器１５、分光分析器１
４の出力を受け、この出力に適当な補正を加えて溶鋼２
の成分を表示する計算機１６、及びこの計算機１６と補
正演算器１１との出力を受けて吹錬動作の制御を行う吹
錬制御部１７を設けた構成である。吹錬用ランス４のガ
ス噴射口４ａからは高圧の酸素が噴出されると同時に、
レーザー発振器１５にて発生され、光ファイバー６ａ・
６を通じて伝達されたレーザー光が放射される。This example is a combination of the configuration for implementing the "continuous spectroscopic analysis method of molten metal in a gas scouring vessel" previously proposed by the applicant and the configuration shown in FIG. 1 according to the present invention. It is. That is, in addition to the configuration shown in FIG. 1, a half mirror that splits and takes out the light guided into the optical fiber 6
13. Optical fiber 6a connecting this half mirror 13 with spectroscopic analysis H14 and laser oscillator 15, spectroscopic analyzer 14 that analyzes the components of molten steel 2 using light obtained through optical fiber 6a, laser oscillator 15, spectroscopic analyzer 1
Receive the output of 4, make appropriate corrections to this output, and make molten steel 2.
This configuration includes a computer 16 that displays the components of the air, and a blowing control section 17 that receives outputs from the computer 16 and the correction calculator 11 and controls the blowing operation. At the same time, high-pressure oxygen is ejected from the gas injection port 4a of the blowing lance 4.
It is generated by the laser oscillator 15, and is connected to the optical fiber 6a.
The laser light transmitted through 6 is emitted.
このレーザー光に照射された溶鋼２は蒸気化され、励起
されて発光する。この光が光ファイバー６ａ・６を通じ
て分光分析器１４に入力され処理される。このような構
成により、溶鋼２の測温と成分分析とを同時にかつ連続
的に行うことができ、自動吹錬を行うことが可能となる
。The molten steel 2 irradiated with this laser light is vaporized and excited to emit light. This light is input to the spectroscopic analyzer 14 through the optical fibers 6a and 6 and is processed. With such a configuration, temperature measurement and component analysis of the molten steel 2 can be performed simultaneously and continuously, and automatic blowing can be performed.
〔発明の効果〕
本第１発明の溶湯の連続測温方法は、以上のように、ラ
ンスから噴出されるガスにより精錬される溶湯の温度を
連続的に測定する溶湯の連続測温方法において、溶湯に
消耗型の熱電対を浸漬して測温すると共に、ランス内に
設けた光ファイバーを通じて放射温度計にて溶湯を測温
し、この測温値を上記熱電対の測温値により補正演算し
て溶湯の温度を測定する構成である。これにより、ガス
吹錬時の溶湯温度を確実にかつ連続測定することが可能
となる。[Effects of the Invention] As described above, the continuous temperature measurement method for molten metal of the first invention includes the following steps: A consumable thermocouple is immersed in the molten metal to measure the temperature, and a radiation thermometer is used to measure the temperature of the molten metal through an optical fiber installed in the lance, and this temperature value is corrected and calculated using the temperature value measured by the thermocouple. This configuration measures the temperature of the molten metal. This makes it possible to reliably and continuously measure the temperature of the molten metal during gas blowing.
また、本第２発明の溶湯の連続測温装置は、以上のよう
に、ランスから噴出されるガスにより精錬される溶湯の
温度を連続的に測定する溶湯の連続測温装置において、
溶湯に浸漬して測温を行う消耗型の熱電対と、ランスの
ガス噴射口に先端部を固定してランス内に配設され、後
端部が放射温度計と接続された光ファイバーと、この光
ファイバーを通じて得た溶湯の放射光によって溶湯の測
温を行う放射温度計と、上記熱電対の測温値により放射
温度計の測温値を補正演算して溶湯の温度を測定する補
正演算器とを備えた構成である。これにより、ガス吹錬
時の溶湯温度を確実に連続測定することができる。従っ
て、吹錬における吹止のタイミングを的確に把握するこ
とができ、吹止の的中率が飛躍的に向上する。その結果
、吹錬時間が短縮され、さらには吹錬の自動化を図るこ
とができる等の効果を奏する。Further, as described above, the continuous temperature measurement device for molten metal of the second invention continuously measures the temperature of the molten metal refined by the gas ejected from the lance.
A consumable thermocouple that measures temperature by immersing it in molten metal, an optical fiber whose tip is fixed to the gas injection port of the lance and placed inside the lance, and whose rear end is connected to a radiation thermometer. A radiation thermometer that measures the temperature of the molten metal using radiation light from the molten metal obtained through an optical fiber, and a correction calculator that measures the temperature of the molten metal by correcting the temperature value of the radiation thermometer based on the temperature value measured by the thermocouple. It is a configuration with. Thereby, the temperature of the molten metal during gas blowing can be reliably and continuously measured. Therefore, the timing of the blow-off during blowing can be accurately grasped, and the accuracy rate of the blow-off is dramatically improved. As a result, the blowing time is shortened, and the blowing process can be automated.
第１図は本発明の一実施例を示す構成説明図、第２図は
第１図に示した転炉内の要部拡大図、第３図は本発明の
他の実施例を示す構成説明図、第４図は従来例を示す説
明図、第５図は他の従来例を示す要部説明図である。
１は転炉、２は溶鋼、４は吹錬用ランス、４ａはガス噴
射口、６は光ファイバー、７は放射温度計、８は熱電対
、９はサブランス、１０は変換器、１１は補正演算器、
１２表示器である。
特許出願人 株式会社 神戸製鋼所＄１図
１パ３
第２図
＄３図
第４図
＄５図
（０２ＬスダυFig. 1 is an explanatory diagram showing an embodiment of the present invention, Fig. 2 is an enlarged view of the main parts inside the converter shown in Fig. 1, and Fig. 3 is an explanatory diagram showing another embodiment of the invention. 4 are explanatory diagrams showing a conventional example, and FIG. 5 is an explanatory diagram of main parts showing another conventional example. 1 is a converter, 2 is molten steel, 4 is a blowing lance, 4a is a gas injection port, 6 is an optical fiber, 7 is a radiation thermometer, 8 is a thermocouple, 9 is a sublance, 10 is a converter, 11 is a correction calculation vessel,
12 display. Patent applicant: Kobe Steel, Ltd. $1 Figure 1 Part 3 Figure 2 Figure 3 Figure 4 Figure $5
Claims (1)
温度を連続的に測定する溶湯の連続測温方法において、
溶湯に消耗型の熱電対を浸漬して測温すると共に、ラン
ス内に設けた光ファイバーを通じて放射温度計にて溶湯
を測温し、この測温値を上記熱電対の測温値により補正
演算して溶湯の温度を測定することを特徴とする溶湯の
連続測温方法。 ２、ランスから噴出されるガスにより精錬される溶湯の
温度を連続的に測定する溶湯の連続測温装置において、
溶湯に浸漬して測温を行う消耗型の熱電対と、ランスの
ガス噴射口に先端部を固定してランス内に配設され、後
端部が放射温度計と接続された光ファイバーと、この光
ファイバーを通じて得た溶湯の放射光によって溶湯の測
温を行う放射温度計と、上記熱電対の測温値により放射
温度計の測温値を補正演算して溶湯の温度を測定する補
正演算器とを備えたことを特徴とする溶湯の連続測温装
置。[Claims] 1. A method for continuous temperature measurement of molten metal that continuously measures the temperature of molten metal refined by gas ejected from a lance,
A consumable thermocouple is immersed in the molten metal to measure the temperature, and a radiation thermometer is used to measure the temperature of the molten metal through an optical fiber installed in the lance, and this temperature value is corrected and calculated using the temperature value measured by the thermocouple. A method for continuous temperature measurement of molten metal characterized by measuring the temperature of molten metal. 2. In a continuous temperature measurement device for molten metal that continuously measures the temperature of molten metal refined by gas ejected from a lance,
A consumable thermocouple that measures temperature by immersing it in molten metal, an optical fiber whose tip is fixed to the gas injection port of the lance and placed inside the lance, and whose rear end is connected to a radiation thermometer. A radiation thermometer that measures the temperature of the molten metal using radiation light from the molten metal obtained through an optical fiber, and a correction calculator that measures the temperature of the molten metal by correcting the temperature value of the radiation thermometer based on the temperature value measured by the thermocouple. A continuous temperature measurement device for molten metal, characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61137097A JPS62293128A (en) | 1986-06-12 | 1986-06-12 | Method and device for continuous measurement of temperature of molten metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61137097A JPS62293128A (en) | 1986-06-12 | 1986-06-12 | Method and device for continuous measurement of temperature of molten metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62293128A true JPS62293128A (en) | 1987-12-19 |
Family
ID=15190793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61137097A Pending JPS62293128A (en) | 1986-06-12 | 1986-06-12 | Method and device for continuous measurement of temperature of molten metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62293128A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003044475A1 (en) * | 2001-10-30 | 2003-05-30 | Techint Compagnia Tecnica Internazionale S.P.A. | Device and method for discrete and continuous measurement of the temperature of molten metal in a furnace or recipient for its production or treatment |
| KR100775085B1 (en) | 2006-05-10 | 2007-11-08 | 주식회사 포스코 | Apparatus for measuring temperature profile of continous casting slab |
| US7690841B2 (en) * | 2005-06-09 | 2010-04-06 | Usinas Siderurgicas De Minas Gerais S.A. Usiminas | Device for continuous temperature measurement of molten steel in the tundish using optical fiber and infra-red pyrometer |
| WO2017169486A1 (en) * | 2016-03-31 | 2017-10-05 | 大陽日酸株式会社 | Melting and smelting furnace for cold iron source and operating method for melting and smelting furnace |
-
1986
- 1986-06-12 JP JP61137097A patent/JPS62293128A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003044475A1 (en) * | 2001-10-30 | 2003-05-30 | Techint Compagnia Tecnica Internazionale S.P.A. | Device and method for discrete and continuous measurement of the temperature of molten metal in a furnace or recipient for its production or treatment |
| US7140765B2 (en) | 2001-10-30 | 2006-11-28 | Techint Compagnia Tecnica Internazionale S.P.A. | Device and method for discrete and continuous measurement of the temperature of molten metal in a furnace or recepient for its production or treatment |
| CN100416242C (en) * | 2001-10-30 | 2008-09-03 | 国际技术公司及国际技术公开有限公司 | Device and method for discrete and continuous measurement of the temperature of molten metal in a furnace or recipient for its production or treatment |
| US7690841B2 (en) * | 2005-06-09 | 2010-04-06 | Usinas Siderurgicas De Minas Gerais S.A. Usiminas | Device for continuous temperature measurement of molten steel in the tundish using optical fiber and infra-red pyrometer |
| KR100775085B1 (en) | 2006-05-10 | 2007-11-08 | 주식회사 포스코 | Apparatus for measuring temperature profile of continous casting slab |
| WO2017169486A1 (en) * | 2016-03-31 | 2017-10-05 | 大陽日酸株式会社 | Melting and smelting furnace for cold iron source and operating method for melting and smelting furnace |
| US11053559B2 (en) | 2016-03-31 | 2021-07-06 | Taiyo Nippon Sanso Corporation | Melting and refining furnace for cold iron source and method of operating melting and refining furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9726545B2 (en) | Method and apparatus for measuring the temperature of a molten metal | |
| JP6122902B2 (en) | Equipment for measuring the temperature of molten metal | |
| US20050145071A1 (en) | System for optically analyzing a molten metal bath | |
| KR100934525B1 (en) | Apparatus and method for discrete and continuous measurement of the temperature of molten metal in a furnace or vessel for producing or processing molten metal | |
| KR100321670B1 (en) | Carbon content measuring method, optical measuring device and measuring device of steel in BOF container | |
| EP1604146A1 (en) | System for optically analyzing a molten bath | |
| JPS62293128A (en) | Method and device for continuous measurement of temperature of molten metal | |
| US5830407A (en) | Pressurized port for viewing and measuring properties of a molten metal bath | |
| US6071466A (en) | Submergible probe for viewing and analyzing properties of a molten metal bath | |
| JP3351120B2 (en) | Measuring method of hot metal temperature at taphole with optical fiber thermometer | |
| AU2014250666B2 (en) | Method and apparatus for measuring the temperature of a molten metal | |
| JPH0464419B2 (en) | ||
| JP2002146426A (en) | Method for measuring temperature of molten metal by radiation | |
| JP4788089B2 (en) | Molten metal component measuring device | |
| JPS6061633A (en) | Continuously measuring apparatus of temperature of melt in refining vessel | |
| JP2636260B2 (en) | Copper purification method in refinery furnace | |
| JP2002168851A (en) | Molten metal component measuring method and control method | |
| JP2002098685A (en) | Measuring probe for component of molten metal | |
| JPS6454319A (en) | Measuring method for temperature of molten metal | |
| JP2005315777A (en) | Spark radiation measurement method and apparatus therefor | |
| JPS6362812A (en) | Detector for slag foaming in converter | |
| JPH085464A (en) | Temperature measuring device using optical fiber for high temperature liquid | |
| Ren et al. | Experimental Research of Continuous Temperature Measurement for Molten Metal Bath through Bottom‐Blowing Component | |
| JPS62254042A (en) | Continuous spectral analysis of molten metal component in gas refining container | |
| JP2822875B2 (en) | Molten metal temperature measuring device |