JPS61200444A - Method and apparatus for measuring moisture of particulate - Google Patents
Method and apparatus for measuring moisture of particulateInfo
- Publication number
- JPS61200444A JPS61200444A JP60040315A JP4031585A JPS61200444A JP S61200444 A JPS61200444 A JP S61200444A JP 60040315 A JP60040315 A JP 60040315A JP 4031585 A JP4031585 A JP 4031585A JP S61200444 A JPS61200444 A JP S61200444A
- Authority
- JP
- Japan
- Prior art keywords
- infrared
- moisture
- measured
- detection head
- optical
- 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
- 238000000034 method Methods 0.000 title description 8
- 238000001514 detection method Methods 0.000 claims abstract description 34
- 239000013307 optical fiber Substances 0.000 claims abstract description 18
- 230000003287 optical effect Effects 0.000 claims abstract description 12
- 230000001678 irradiating effect Effects 0.000 claims abstract description 9
- 230000001681 protective effect Effects 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims description 25
- 239000008187 granular material Substances 0.000 claims description 20
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 238000000691 measurement method Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000004886 process control Methods 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3554—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for determining moisture content
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
【発明の詳細な説明】
発明の「ｌ的
産業上の利用分野
この発明は、粉粒体の水分センサー、特に鉄鉱石、微粉
炭、鋳物砂、石灰石、セメント、粉末状食品等の含有水
分を製造工程中で連続的に測定して、その工程管理を容
易かつ適切ならしめるための水分測定に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION [1] Industrial application field of the invention This invention is a moisture sensor for powder and granular materials, particularly for detecting moisture contained in iron ore, pulverized coal, foundry sand, limestone, cement, powdered foods, etc. This invention relates to moisture measurement that is carried out continuously during the manufacturing process to facilitate and appropriate process control.
【１二１Ｊ
粉粒体の水分測定で実用的な手法として、被測定物の水
分量によってその吸収特性が変化する測定赤外波長光と
、水分量にかかわらずその吸収特性が変化しない参照波
長光とを交互に被測定物に照射し、その各反射光から演
算によって被測定物の水分を測定する赤外線水分測定方
法がよく知られており、その測定精度を向トするだめの
技術として特開昭５８−７５４７号、特開昭５８−２０
４３３６号等が公知である。[121J As a practical method for measuring the moisture content of powder and granular materials, we use measurement infrared wavelength light whose absorption characteristics change depending on the moisture content of the object to be measured, and reference wavelength light whose absorption characteristics do not change regardless of the moisture content. The infrared moisture measurement method is well known, in which the moisture content of the measured object is measured by alternately irradiating the measured object with light and calculating the reflected light from each reflected light. Publication No. 58-7547, Japanese Patent Publication No. 58-20
No. 4336 and the like are publicly known.
こういった公知の赤外線水分測定装置は、赤外光源なら
びに反射光の検出素子を内蔵した検出ヘッド部を測定対
象の外部に設置して被測定物の表面に赤外光を照射して
その反射光から水分を測定する方式であるために、非測
定物の表面部分の水分を測定することしかできなかった
。These known infrared moisture measuring devices install a detection head containing an infrared light source and a detection element for reflected light outside the object to be measured, and irradiate the surface of the object with infrared light to detect the reflection. Because this method measures moisture using light, it was only possible to measure moisture on the surface of an object that was not being measured.
が解決しようとする問題点
しかしながら、製造工程中の粉粒体、例えばベルトコン
へ７−１．を搬送されている粉ね体の水分含イＩＪＩは
表面部と中心部とでは必ずしも同一・ではない、たとえ
ば乾燥炉Ｔでの乾燥り程後まだ温度が高い場合には、ベ
ルトｈの粉粒体の表面ではなお水分の蒸発が粛続して搬
送中に水分含有率が次第に低下するのに、中心部又はベ
ルトに接する部分の粉粒体は蒸発水分の拡散が妨げられ
て水分含有率は変化しないということがある。Problems to be Solved by However, 7-1. The moisture content IJI of the powder being conveyed is not necessarily the same between the surface and the center. For example, if the temperature is still high after drying in the drying oven T, the powder particles on the belt h On the surface of the body, moisture continues to evaporate and the moisture content gradually decreases during conveyance, but in the center of the powder or in the area in contact with the belt, the diffusion of evaporated moisture is prevented and the moisture content decreases. Sometimes things don't change.
そのため、表面部分の水分測定イＩｌ′１は全粉粒体の
モ均分析値とは−・致しない。Therefore, the moisture measurement value Il'1 of the surface portion does not match the average analysis value of the whole powder.
したがって前掲の公開特許等の公知技術等でいかに測定
精度を向トさせても、ｆ均水分イ１は求めることができ
ない。Therefore, no matter how much the measurement accuracy is improved using known techniques such as the above-mentioned published patents, it is impossible to determine f-equalized water i1.
しかしながら、製造装置の制御、１品の品質管理等に用
いるものは表面のみならず内部も含めたモ均的な水分値
である方が望ましい。However, for things used for controlling manufacturing equipment, quality control of a single product, etc., it is desirable to have a uniform moisture content not only on the surface but also on the inside.
本発明はこのような従来の赤外線水分計の欠点を解決し
、粉粒体の平均水分値の測定を可能ならしめることを目
的とするものであおる。It is an object of the present invention to solve these drawbacks of conventional infrared moisture meters and to make it possible to measure the average moisture value of granular materials.
魚几二亘遣
問題点を解決するための１塁
本発明の粉粒体水分測定装置は、赤外波長領域光を透過
する一対の光ファイバーのうちの一方の光ファイバーに
より外部光源から伝送されてきた赤外光を水分測定対象
試料に照射する機能を有する光学部品よりなる照射部と
水分測定対象試料から反射された赤外光を受光して他の
光ファイバーへ伝送する機能を有する光学部品よりなる
受光部を一組として一個の保護部材中に格納した検出ヘ
ッドを、−上記一対の光ファイバーにより、赤外光源と
赤外光吸収率検知系とよりなる赤外線式水分計に接続し
たものである。In order to solve this problem, the powder moisture measuring device of the present invention transmits light from an external light source through one of a pair of optical fibers that transmits light in the infrared wavelength region. An irradiation section consisting of an optical component that has the function of irradiating infrared light onto the sample to be measured for moisture content, and a light receiving section consisting of an optical component that has the function to receive the infrared light reflected from the sample to be measured for moisture content and transmit it to another optical fiber. The detection head, which is housed as a set in a single protective member, is connected to an infrared moisture meter comprising an infrared light source and an infrared light absorption rate detection system through the above-mentioned pair of optical fibers.
これを添付図面により説明すると、第１図において、赤
外波長領域光を透過する一対の光ファイバー１のうちの
一方の光ファイ／へ−により外部光１ｉｔ（赤外線式水
分計３０に内蔵されている）から伝送されてきた赤外光
を水分測定対象試料に照射する機能を有する光学部品よ
りなる照射部（その先端を記号２１で示す）と水分測定
対象試料から反射された赤外光を受光して他の光ファイ
バーへ伝送する機能を有する光学部品よりなる受光部（
その先端を記号２２で示す）を−組として一個の保護部
材中に格納した検出ヘッド２（保護部材の外部形状が示
されている）を、上記一対の光ファイバー１により、赤
外光源と赤外光吸収率検知系とよりなる赤外線式水分計
３０に接続しである。To explain this with reference to the accompanying drawings, in FIG. 1, external light 1it (built in an infrared moisture meter 30 ) and an irradiation section (the tip of which is indicated by symbol 21), which is an optical component that has the function of irradiating the infrared light transmitted from A light-receiving part (
The detection head 2 (the external shape of the protection member is shown), which is housed in a set of two (the tips of which are indicated by symbol 22) in one protection member, is connected to an infrared light source and an infrared It is connected to an infrared moisture meter 30 consisting of a light absorption rate detection system.
第１図の場合、水分測定対象試料としてベルトコンベヤ
ー４上の粉粒体５を例示しである。In the case of FIG. 1, a granular material 5 on a belt conveyor 4 is illustrated as a sample to be measured for moisture content.
ここで照射部２１、受光部２２の構成例を第２図から：
ｆ４４図で説明する。これらの図中で１０は他端を赤外
光源に接続された照射光州光ファイバー、工１は他端を
反射光から電気信号を得る受光素子（図では省略）に接
続された反射光用光ファイバー、２３はレンズ、２４は
赤外光を透過する材質の保護プレートである。Here, an example of the configuration of the irradiating section 21 and the light receiving section 22 is shown in Fig. 2:
This will be explained using the f44 diagram. In these figures, 10 is an irradiating Gwangju optical fiber whose other end is connected to an infrared light source, and 1 is an optical fiber for reflected light whose other end is connected to a light receiving element (not shown) that obtains an electrical signal from the reflected light. 23 is a lens, and 24 is a protective plate made of a material that transmits infrared light.
第２図は１Ｏ１１１共に中芯の光ファイバーを用いた例
である。FIG. 2 shows an example in which both 1O111 and 1O111 are made of optical fibers as the core.
第３図は１０．１１に多芯の光フアイバー束を用いた例
で、１０．１１とも半円形に成形固定したものである。FIG. 3 shows an example in which a multicore optical fiber bundle is used for 10.11, and both 10.11 and 10.11 are molded and fixed in a semicircular shape.
第４図は同軸円筒状に１０と１１を成形固定したもので
ある。FIG. 4 shows 10 and 11 molded and fixed in a coaxial cylindrical shape.
これら第２図から第４図までの構成をもって保護プレー
ト２４の真近にある被測定物へ赤外光を照射し、その反
射光を入光できる。With the configurations shown in FIGS. 2 to 4, it is possible to irradiate an object to be measured in the immediate vicinity of the protection plate 24 with infrared light and to input the reflected light.
このように検出ヘッド２の構成はさまざまな組み合わせ
が考えられ、被測定物の種類、粒径、および測定場所の
条件等で最適なものが選べる。As described above, various combinations of the configuration of the detection head 2 can be considered, and the optimal one can be selected depending on the type of object to be measured, the particle size, the conditions of the measurement location, etc.
これらの検出へラド２の構成の代表例を第２図の構成と
し、以下の説明図は第１図中のような簡略表現をとるが
、すべて第３図、第４図のような構成も採用することが
可能である。A typical example of the configuration of these detection radars 2 is shown in FIG. 2, and the following explanatory diagrams use simplified representations as shown in FIG. 1, but all also have the configurations shown in FIGS. It is possible to adopt.
１月
このように本発明における検出ヘッド２は、光フアイバ
イーとレンズ等の光学部品のみで構成されているので小
型かつ軽量である。As described above, the detection head 2 according to the present invention is small and lightweight since it is composed only of optical fibers and optical parts such as lenses.
この検出へラド２を第５図Ｂ−Ｄのように粉粒体の層内
に埋没させてその真近にある粉粒体に測定用赤外線を照
射し、かつその反射光を赤外線水分計３０に取り込む６
赤外線水分計３０は公知のものであり、赤外線反射光を
電気信−士に変換する方法、複数の赤外線波長を交互に
用いることによってより高い精度で水分値を演算する方
法等はそのまま流用できる。The detection radar 2 is buried in a layer of powder and granules as shown in FIG. 6. The infrared moisture meter 30 is a well-known one, and the method of converting infrared reflected light into electric signal, the method of calculating moisture values with higher accuracy by alternately using multiple infrared wavelengths, etc. are the same. Can be reused.
第２図から第４図の説明では省略したが、検出ヘッド内
の光ファイノー−１光学部品算は樹脂などで固定され、
ステンレスなどのｌ１ＩＦ＃食性金属からなる保、Ｊ部
材で保護される。Although omitted in the explanation of FIGS. 2 to 4, the optical fine-1 optical components inside the detection head are fixed with resin or the like.
Protected by J member made of l1IF# corrosive metal such as stainless steel.
保護部材の外部形状は測定対象の粉粒体の移動を妨げな
い形状に成型されているのが望ましい。It is desirable that the external shape of the protective member is formed into a shape that does not hinder the movement of the powder or granular material to be measured.
その形状例を示すと、第１図に示したようなベルトコン
ベヤーにより搬送されている粉粒体に対しては第６図に
示すようなレンズ状の断面を有するもの（矢印方向の粉
粒体の流れに対して巾の狭い径が直角に配置される）又
は第７図に示すような流線形のものが適当である。ここ
で先端部というのは、水分測定対象である粉粒体に没入
する部分のことをいうが、検出ヘッドの保護部材全体の
外部形状がここに示したような形状であっても差支えな
い。To give an example of the shape, for powder and granules being conveyed by a belt conveyor as shown in Fig. 1, those having a lens-shaped cross section as shown in Fig. 6 (powder and granules in (in which the narrow diameter is arranged at right angles to the flow) or a streamlined shape as shown in FIG. 7 is suitable. Here, the tip part refers to the part that is immersed in the powder or granular material that is the object of moisture measurement, but the overall external shape of the protection member of the detection head may have the shape shown here.
このような検出ヘッドを用いれば、バルク状の粉粒体の
表面でなく内部の異なる場所における水分測定が可能と
なり、それらの測定値の平均値を求めれば工業的に利用
できる粉粒体の平均水分値が得られる。By using such a detection head, it is possible to measure moisture at different locations inside a bulk powder material, rather than on the surface, and by calculating the average value of these measured values, it is possible to measure the moisture content of the powder material, which can be used industrially. Moisture value is obtained.
バルク状の粉粒体の異なる場所での水分含有率を測定す
るためには、Ｌ記の検出ヘッドを複数個複数の測定位置
に設置してもよいが、検出ヘッドを移動させて、水分測
定対象試料との相対位置を変化させる機構を備えれば、
−個の検出ヘッドで複数個所の水分含有率を測定できる
。第１図に示したように、検出へラド２の支持棒３をギ
ヤ３１で上下させる方法その他任意の機構を採用するこ
とができる。In order to measure the moisture content at different locations of bulk powder or granular material, multiple detection heads as described in L may be installed at multiple measurement positions, but the detection head can be moved to measure the moisture content. If equipped with a mechanism that changes the relative position to the target sample,
- Moisture content can be measured at multiple locations using multiple detection heads. As shown in FIG. 1, any mechanism other than the method of moving the support rod 3 of the detection rod 2 up and down using a gear 31 may be adopted.
第５図に検出へ一７ドを上下させた状態を示す。FIG. 5 shows the state in which the 17-d is moved up and down to detection.
ここでＡ、Ｂ、Ｃ，Ｄは時間的経過により検出ヘッドと
コンベヤーベルト４上の粉粒体５との相対位置が変化し
た状態を示す。Here, A, B, C, and D indicate states in which the relative position between the detection head and the powder or granular material 5 on the conveyor belt 4 has changed over time.
ざらに、搬送中の粉粒体の層内外で検出へラドを周期的
に移動させて、粉粒体の層の複数位置における水分含有
率を周期的に測定できるようにする機構を備えれば、そ
の測定値から平均値を算出する演算装置と組み合せるこ
とにより、自動的に粉粒体の乎均水分含有率を監視して
オンラインによる工程管理その他に利用することがでさ
る。Roughly speaking, it would be better to have a mechanism that periodically moves the detection radar inside and outside the layer of the powder or granule material being conveyed, thereby making it possible to periodically measure the moisture content at multiple positions in the layer of the powder or granule material. By combining this method with an arithmetic device that calculates an average value from the measured values, it is possible to automatically monitor the average moisture content of powder and granules and use it for online process control and other purposes.
検出ヘッドを周期的に移動させるには、サーボモーター
その他の機械的移動９置と簡単なプログラム指示手段と
により行うことができる。Periodic movement of the detection head can be achieved by a servomotor or other mechanical movement and by simple programming means.
発明の効果
粉粒体の水分の検出ヘッドが小型軽量化され、粉粒体の
表面のみならず層内での水分測定ができるようになり、
粉粒体全体のモ均水分が測定できる。Effects of the invention: The head for detecting moisture in powder and granules has been made smaller and lighter, making it possible to measure moisture not only on the surface of the powder but also within the layer.
The average moisture content of the entire powder or granule material can be measured.
第１図は本発明の構成及びその使用状態を示す説明図、
第２図、第３図及び第４図は検出ヘッドの構成例を示す
図である。第５図（Ａ 、 Ｂ 、 Ｃ。
Ｄ）は検出ヘッドを」二下させて粉粒体との相対位置を
変化させた状態を示す図である。第６図、第７図は検出
へ、・７ドの保護部材の形状を説明する断面図である。FIG. 1 is an explanatory diagram showing the configuration of the present invention and its usage state,
FIG. 2, FIG. 3, and FIG. 4 are diagrams showing configuration examples of the detection head. FIG. 5 (A, B, C, D) is a diagram showing a state in which the detection head is lowered two inches to change the relative position with respect to the granular material. FIGS. 6 and 7 are cross-sectional views illustrating the shape of the protection member for detection.
Claims (1)
ちの一方の光ファイバーにより外部光源から伝送されて
きた赤外光を水分測定対象試料に照射する機能を有する
光学部品よりなる照射部と水分測定対象試料から反射さ
れた赤外光を受光して他の光ファイバーへ伝送する機能
を有する光学部品よりなる受光部を一組として一個の保
護部材中に格納した検出ヘッドを、上記一対の光ファイ
バーにより、赤外光源と赤外光吸収率検知系とよりなる
赤外線式水分計に接続してなる粉粒体の水分測定装置。 ２ 検出ヘッドの保護部材の先端部の外部形状が、測定
対象の粉粒体の移動する流れを乱さない形状に成型され
ている特許請求の範囲第１項記載の水分測定装置。 ３ 検出ヘッドを移動させて、水分測定対象試料との相
対位置を変化させる機構を備えている特許請求の範囲第
１項又は第２項記載の水分測定装置。 ４ 搬送中の粉粒体の層内外で、赤外波長領域光を透過
する一対の光ファイバーのうちの一方の光ファイバーに
より外部光源から伝送されてきた赤外光を水分測定対象
試料に照射する機能を有する光学部品よりなる照射部と
水分測定対象試料から反射された赤外光を受光して他の
光ファイバーへ伝送する機能を有する光学部品よりなる
受光部を一組として一個の保護部材中に格納した検出ヘ
ッドを周期的に移動させて、粉粒体の層の複数位置にお
ける水分含有率を周期的に測定する水分測定方法。[Claims] 1. An optical component that has the function of irradiating a sample to be measured with infrared light transmitted from an external light source through one of a pair of optical fibers that transmit light in the infrared wavelength region. The detection head is housed in a single protective member as a set including an irradiating part and a light receiving part, which is an optical component that has the function of receiving infrared light reflected from the sample to be measured for moisture content and transmitting it to another optical fiber. A powder moisture measuring device that is connected to an infrared moisture meter consisting of an infrared light source and an infrared absorption rate detection system through a pair of optical fibers. 2. The moisture measuring device according to claim 1, wherein the external shape of the tip of the protective member of the detection head is formed into a shape that does not disturb the moving flow of the powder or granular material to be measured. 3. The moisture measuring device according to claim 1 or 2, comprising a mechanism for moving the detection head to change its relative position with respect to the sample to be measured. 4. A function to irradiate the sample to be measured with infrared light transmitted from an external light source through one of a pair of optical fibers that transmit light in the infrared wavelength region, inside and outside the layer of powder and granules being transported. A set of an irradiating part made of an optical component and a light receiving part made of an optical part having a function of receiving infrared light reflected from the sample to be measured for moisture content and transmitting it to another optical fiber are housed in one protective member. A moisture measurement method in which the detection head is moved periodically to periodically measure the moisture content at multiple positions in a layer of granular material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60040315A JPS61200444A (en) | 1985-03-02 | 1985-03-02 | Method and apparatus for measuring moisture of particulate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60040315A JPS61200444A (en) | 1985-03-02 | 1985-03-02 | Method and apparatus for measuring moisture of particulate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61200444A true JPS61200444A (en) | 1986-09-05 |
Family
ID=12577179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60040315A Pending JPS61200444A (en) | 1985-03-02 | 1985-03-02 | Method and apparatus for measuring moisture of particulate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61200444A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01142845U (en) * | 1988-03-25 | 1989-09-29 | ||
| JPH0266429A (en) * | 1988-09-01 | 1990-03-06 | Hamamatsu Photonics Kk | Measuring instrument for horizontal light transmission |
| JPH0299341U (en) * | 1989-01-25 | 1990-08-08 | ||
| US5326972A (en) * | 1993-03-25 | 1994-07-05 | General Electric Company | Diamond-based, self-sampling internal reflection element for on-line analysis of materials in a recycle stream |
| JP2010107223A (en) * | 2008-10-28 | 2010-05-13 | Nippon Steel Corp | Method and apparatus for measuring moisture content of sintering material |
| JP2014112053A (en) * | 2012-12-05 | 2014-06-19 | Nippon Steel & Sumitomo Metal | Measuring method of coal moisture on conveyor |
| KR20220086060A (en) * | 2020-12-16 | 2022-06-23 | 주식회사 포스코 | System and method for coal moisture measurement |
-
1985
- 1985-03-02 JP JP60040315A patent/JPS61200444A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01142845U (en) * | 1988-03-25 | 1989-09-29 | ||
| JPH0266429A (en) * | 1988-09-01 | 1990-03-06 | Hamamatsu Photonics Kk | Measuring instrument for horizontal light transmission |
| JPH0299341U (en) * | 1989-01-25 | 1990-08-08 | ||
| US5326972A (en) * | 1993-03-25 | 1994-07-05 | General Electric Company | Diamond-based, self-sampling internal reflection element for on-line analysis of materials in a recycle stream |
| JP2010107223A (en) * | 2008-10-28 | 2010-05-13 | Nippon Steel Corp | Method and apparatus for measuring moisture content of sintering material |
| JP2014112053A (en) * | 2012-12-05 | 2014-06-19 | Nippon Steel & Sumitomo Metal | Measuring method of coal moisture on conveyor |
| KR20220086060A (en) * | 2020-12-16 | 2022-06-23 | 주식회사 포스코 | System and method for coal moisture measurement |
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