JP5277841B2 - Cement raw material continuous analyzer and analysis method thereof - Google Patents

Cement raw material continuous analyzer and analysis method thereof Download PDF

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JP5277841B2
JP5277841B2 JP2008251589A JP2008251589A JP5277841B2 JP 5277841 B2 JP5277841 B2 JP 5277841B2 JP 2008251589 A JP2008251589 A JP 2008251589A JP 2008251589 A JP2008251589 A JP 2008251589A JP 5277841 B2 JP5277841 B2 JP 5277841B2
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JP2010085118A (en
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一郎 江波戸
智晴 大場
建治 吉良山
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Mitsubishi Materials Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a continuous analyzer for a cement raw material capable of continuously analyzing the target component in the fine powder of a cement raw material without bearing the control responsibility of a radioactive isotope, and a method for continuously analyzing the cement raw material. <P>SOLUTION: The fine powder (a) of the cement raw material is transferred by a belt conveyor 11 and turned under pressure on the way of transfer by a turning pressure roller 12 to level the surface of the fine powder (a) of the cement raw material in predetermined thickness. Thereafter, the fine powder (a) of the cement raw material is irradiated with primary X rays 17 on the part of the belt conveyor 11 on the downstream side of the turning pressure roller 12 and the target component in the fine powder (a) of the cement raw material is continuously analyzed on the basis of the energy of the fluorescent X rays 24 released from the fine powder (a) of the cement raw material by an energy dispersion type fluorescent X-ray analyzer 13. As a result, the target component in the fine powder (a) of the cement raw material can be continuously analyzed without bearing the control responsibility of the radioactive isotope. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

この発明はセメント原料の連続分析装置およびその分析方法、詳しくはセメント原料精粉中の目標成分を連続的に分析するセメント原料の連続分析装置およびその分析方法に関する。   The present invention relates to a cement raw material continuous analysis apparatus and analysis method thereof, and more particularly to a cement raw material continuous analysis apparatus and analysis method for continuously analyzing target components in cement raw material fine powder.

一般に、セメント製造工程では、石灰石、粘土、珪石および鉄原料を原料ミル内で混合および粉砕して得られたセメント原料精粉を、エアースライドを用いて原料混合サイロへ移送し、貯蔵している。セメント原料精粉は、移送途中でその一部が試料として分取され、この試料からセメント原料精粉の目標成分が連続分析装置により連続的に分析されている。
従来の連続分析装置としては、例えば特許文献1が知られている。これは、セメント原料精粉を移送するベルトコンベアと、ベルトコンベアの上方に設けられ、セメント原料精粉の表面を転圧して均す転圧ローラと、転圧ローラの設置位置より下流となるベルトコンベアの部分上に設けられたライムメータとを備えた連続分析装置である。
Generally, in the cement manufacturing process, limestone, clay, silica and iron raw materials are mixed and pulverized in a raw material mill, and cement raw material fine powder is transferred to a raw material mixing silo using an air slide and stored. . A part of the cement raw material fine powder is collected as a sample during the transfer, and the target component of the cement raw material fine powder is continuously analyzed from the sample by a continuous analyzer.
For example, Patent Literature 1 is known as a conventional continuous analyzer. This is a belt conveyor for transferring cement raw material fine powder, a roller provided above the belt conveyor, for rolling and leveling the surface of the cement raw material fine powder, and a belt downstream from the installation position of the pressure roller. It is a continuous analysis apparatus provided with the lime meter provided on the part of the conveyor.

特許文献1によるセメント原料精粉の連続分析時には、まず、ベルトコンベアにより移送中のセメント原料精粉(分取試料)を転圧ローラにより転圧し、その表面を均す。次に、転圧ローラより下流のベルトコンベア上で、ライムメータによりセメント原料精粉中のカルシウムを連続的に分析する。すなわち、Fe−55線源から発せられた放射線をセメント原料精粉の表面に照射する。そして、セメント原料精粉から放出された2次X線をシンチレータが受けて光に変化させ、その光を光電子増幅管により電流に変換した後、それをプリアンプを通して計数回路部へ送ることで、セメント原料精粉中のカルシウムを連続的に分析する。
特開平10−142115号公報
At the time of continuous analysis of cement raw material fine powder according to Patent Document 1, first, the cement raw material fine powder (prepared sample) being transferred by a belt conveyor is rolled by a rolling roller and the surface thereof is leveled. Next, the calcium in the cement raw material fine powder is continuously analyzed by a lime meter on a belt conveyor downstream from the rolling roller. That is, the surface of the cement raw material fine powder is irradiated with radiation emitted from the Fe-55 radiation source. The secondary X-ray emitted from the cement raw material fine powder is received by the scintillator and converted into light. After the light is converted into current by the photoelectron amplifier tube, it is sent to the counting circuit section through the preamplifier. Continuously analyze calcium in raw material fines.
JP-A-10-142115

しかしながら、従来の連続分析装置では、このようにセメント原料精粉のカルシウムの分析器として、放射性同位元素のFe−55を利用するライムメータを採用していた。そのため、人体などに有害な放射性同位元素のFe−55を取り扱う管理義務が生じ、放射線の被爆および管理費が嵩むおそれがあった。
そこで、発明者は、鋭意研究の結果、ライムメータに代わるものとして、試料にX線を照射し、その試料から放出された蛍光X線のエネルギに基づき、試料中の目標成分を分析するエネルギ分散型の蛍光X線分析器に着目した。これを使用すれば、試料の分析能はライムメータと遜色なく、しかも放射線被曝の危険性および管理費が嵩む、Fe−55の管理義務を負わずにすむことを知見し、この発明を完成させた。
However, in the conventional continuous analyzer, a lime meter using the radioactive isotope Fe-55 is employed as the calcium analyzer of the cement raw material fine powder. Therefore, the management duty which handles radioactive isotope Fe-55 harmful | toxic to a human body etc. arose, and there existed a possibility that the exposure of radiation and the management expense might increase.
Therefore, as an alternative to the lime meter, the inventor has radiated X-rays on the sample and analyzed the target component in the sample based on the energy of fluorescent X-rays emitted from the sample as an alternative to the lime meter. Attention was paid to a type of fluorescent X-ray analyzer. By using this, it was found that the analytical ability of the sample is comparable to that of a lime meter, and the risk of radiation exposure and the management cost are increased, and it is possible to eliminate the obligation to manage Fe-55, and the present invention has been completed. It was.

この発明は、放射性同位元素の管理義務を負わず、セメント原料精粉中の目標成分を連続的に分析することができるセメント原料の連続分析装置およびその分析方法を提供することを目的としている。   SUMMARY OF THE INVENTION An object of the present invention is to provide a cement raw material continuous analysis apparatus and an analysis method thereof capable of continuously analyzing a target component in cement raw material fine powder without any obligation to manage radioisotopes.

請求項1に記載の発明は、セメント原料精粉を移送するベルトコンベアと、該ベルトコンベアの上方に設けられ、前記セメント原料精粉を転圧してその表面を均す転圧ローラと、前記ベルトコンベアのうち、前記転圧ローラの設置位置より下流位置で、前記ベルトコンベアの上方に設けられ、前記セメント原料精粉にX線を照射し、この照射されたセメント原料精粉から放出された蛍光X線のエネルギに基づき、このセメント原料精粉の成分を連続または間欠に分析するエネルギ分散型の蛍光X線分析器と、前記ベルトコンベアのうち、前記転圧ローラの設置位置より下流位置で、かつ前記蛍光X線分析器と前記ベルトコンベアの長さ方向に並ぶように、前記ベルトコンベアの上方に設けられるとともに、前記セメント原料精粉にX線を照射し、この照射されたセメント原料精粉から放出された蛍光X線のエネルギに基づき、このセメント原料精粉の成分を連続または間欠に分析するエネルギ分散型の別の蛍光X線分析器とを備え、前記蛍光X線分析器および前記別の蛍光X線分析器は、いずれもペルチェ素子によって冷却を行うシリコンドリフト検出器で、前記蛍光X線分析器は、原子番号50以下の軽い元素分析用のもので、前記別の蛍光X線分析器は、原子番号50を超える重い元素分析用のものであるセメント原料の連続分析装置である。 The invention according to claim 1 is a belt conveyor for transferring cement raw material fine powder, a rolling roller provided above the belt conveyor, for rolling the cement raw material fine powder and leveling the surface thereof, and the belt Fluorescence emitted from the irradiated cement raw material fine powder is provided above the belt conveyor at a position downstream from the installation position of the rolling roller, and irradiated with X-rays on the cement raw fine powder. Based on the energy of the X-ray, the energy dispersive fluorescent X-ray analyzer that analyzes the components of the cement raw material fine powder continuously or intermittently, and in the belt conveyor, at a position downstream from the installation position of the rolling roller, And it is provided above the belt conveyor so as to be aligned in the length direction of the fluorescent X-ray analyzer and the belt conveyor, and the cement material fine powder is irradiated with X-rays Based on the energy of the fluorescent X-rays emitted from the irradiated cement raw fine powder, and an energy dispersive another fluorescent X-ray analyzer for analyzing the components of the cement raw material fine powder in a continuous or intermittent, The X-ray fluorescence analyzer and the other X-ray fluorescence analyzer are both silicon drift detectors that are cooled by Peltier elements, and the X-ray fluorescence analyzer is for light elemental analysis with an atomic number of 50 or less. The another fluorescent X-ray analyzer is a continuous analysis apparatus for a cement raw material for heavy element analysis exceeding atomic number 50 .

請求項1に記載の発明によれば、ベルトコンベアによりセメント原料精粉を移送し、その途中で転圧ローラによりセメント原料精粉を転圧し、所定の厚さでその表面を均す。その後、転圧ローラより下流のベルトコンベア上で、ベルトコンベアの長さ方向に並設された、原子番号50以下の軽い元素分析用の蛍光X線分析器と、原子番号50を超える重い元素分析用の別の蛍光X線分析器とから、セメント原料精粉に対してそれぞれX線を照射し、セメント原料精粉から放出された蛍光X線のエネルギに基づき、セメント原料精粉中の目標成分を、エネルギ分散型の2つの蛍光X線分析器により連続または間欠に分析する。その結果、ライムメータを用いる従来装置の課題であった、放射性同位元素の管理義務を負うことなく、1台の連続分析装置によって、セメント原料精粉中のカルシウムを連続して分析することができる。その他、カルシウム以外の成分(セメント原料精粉中の軽い元素と重い元素)を連続して分析することができる。 According to the first aspect of the present invention, the cement raw material fine powder is transferred by the belt conveyor, and the cement raw material fine powder is rolled by the rolling roller in the middle thereof, and the surface thereof is leveled to a predetermined thickness. Thereafter, a fluorescent X-ray analyzer for light elemental analysis with an atomic number of 50 or less, and a heavy elemental analysis with an atomic number exceeding 50, which are arranged in parallel in the length direction of the belt conveyor on the belt conveyor downstream from the rolling roller. from another X-ray fluorescence analyzer use, X-ray irradiation, respectively for the cement raw fine powder, based on the energy of the fluorescent X-rays emitted from the cement raw fine powder, the target component in the cement raw material Seiko Are analyzed continuously or intermittently by two energy dispersive X-ray fluorescence analyzers. As a result, it is possible to continuously analyze calcium in the cement raw material fine powder with one continuous analysis device without any obligation to manage radioisotopes, which was a problem with conventional devices using lime meters. . In addition, components other than calcium (light and heavy elements in cement raw fine powder) can be analyzed continuously.

セメント原料精粉とは、石灰石、粘土、珪石および鉄原料を原料ミルの回転ドラムに連続的に投入することで、約90μm以下に粉砕したものである。セメント原料精粉中の目標成分(分析成分)としては、例えばSiO,Al,Fe,CaOなどが挙げられる。
転圧ローラは、ベルトコンベアの無端ベルトの上方に配置され、無端ベルト上で移送中のセメント原料精粉を上方から転圧し、セメント原料精粉の安定した分析を可能とするため、その表面を平坦に均すローラである。
The cement raw material fine powder is pulverized to about 90 μm or less by continuously feeding limestone, clay, silica stone and iron raw materials to the rotating drum of the raw material mill. Examples of the target component (analytical component) in the cement raw material fine powder include SiO 2 , Al 2 O 3 , Fe 2 O 3 , and CaO.
The rolling roller is arranged above the endless belt of the belt conveyor and rolls the cement raw material fine powder being transferred on the endless belt from above to enable stable analysis of the cement raw material fine powder. It is a roller that leveles out flat.

転圧ローラの使用本数は、1本でも複数本でもよい。
ベルトコンベアの長さ方向における転圧ローラの位置は、セメント原料精粉の投入位置より下流であれば任意である。
ベルトコンベアの長さ方向における蛍光X線分析器の位置は、転圧ローラの設置位置より下流であれば任意である。ベルトコンベアは、無端ベルトを連続回転(連続分析)させても、例えば所定時間ごとに無端ベルトを間欠回転(間欠分析)させてもよい。
The number of rolling roller used may be one or more.
The position of the rolling roller in the length direction of the belt conveyor is arbitrary as long as it is downstream from the input position of the cement raw material fine powder.
The position of the fluorescent X-ray analyzer in the length direction of the belt conveyor is arbitrary as long as it is downstream from the installation position of the rolling roller. The belt conveyor may continuously rotate the endless belt (continuous analysis) or may intermittently rotate the endless belt (intermittent analysis) at predetermined time intervals, for example.

蛍光X線分析器としては、エネルギ分散型のものであれば任意である。例えば、シリコンドリフト(SDD:Silicon Drift Detector)検出器を搭載した蛍光X線分析器のように、エネルギ分散能に優れ、液体窒素によらずペルチェ素子による冷却を行うものが好ましい。
セメント原料精粉に対するX線の照射は、常時照射しても、分析時だけ間欠的(例えば60〜100秒ごと)に照射してもよい。
The fluorescent X-ray analyzer is optional as long as it is an energy dispersive type. For example, a fluorescent X-ray analyzer equipped with a silicon drift detector (SDD) is excellent in energy dispersibility and cooled by a Peltier element regardless of liquid nitrogen.
X-ray irradiation with respect to the cement raw material fine powder may be performed constantly or intermittently (for example, every 60 to 100 seconds) only during analysis.

請求項2に記載の発明は、ベルトコンベアにより移送中のセメント原料精粉を転圧ローラにより転圧し、その表面を均す転圧工程と、前記ベルトコンベアのうち、前記転圧ローラの設置位置より下流位置で、前記セメント原料精粉にX線を照射し、この照射されたセメント原料精粉から放出された蛍光X線のエネルギに基づき、このセメント原料精粉の成分をエネルギ分散型の蛍光X線分析器により連続または間欠に分析する分析工程と、前記ベルトコンベアのうち、前記転圧ローラの設置位置より下流位置で、かつ前記蛍光X線分析器と前記ベルトコンベアの長さ方向に並ぶように設けられて、前記セメント原料精粉にX線を照射し、この照射されたセメント原料精粉から放出された蛍光X線のエネルギに基づき、このセメント原料精粉の成分をエネルギ分散型の別の蛍光X線分析器により連続または間欠に分析する別の分析工程とを備え、前記蛍光X線分析器および前記別の蛍光X線分析器は、いずれもペルチェ素子によって冷却を行うシリコンドリフト検出器で、前記蛍光X線分析器は、原子番号50以下の軽い元素分析用のもので、前記蛍光X線分析器は、原子番号50を超える重い元素分析用のものであるセメント原料の連続分析方法である。 The invention according to claim 2 is a rolling process in which cement raw material fine powder being transferred by a belt conveyor is pressed by a rolling roller and the surface thereof is leveled, and the installation position of the rolling roller in the belt conveyor. At a further downstream position, the cement raw material fine powder is irradiated with X-rays, and based on the energy of fluorescent X-rays emitted from the irradiated cement raw material fine powder, the components of the cement raw material fine powder are converted into energy-dispersed fluorescent materials. An analysis process in which analysis is performed continuously or intermittently by an X-ray analyzer, and the belt conveyor is arranged downstream from the installation position of the rolling roller and in the longitudinal direction of the fluorescent X-ray analyzer and the belt conveyor. The cement raw material fine powder is irradiated with X-rays, and based on the energy of fluorescent X-rays emitted from the irradiated cement raw material fine powder, Min and a separate analysis step of analyzing the continuous or intermittent by another fluorescent X-ray analyzer of the energy distributed to the fluorescent X-ray analyzer and the separate X-ray fluorescence analyzer, by both the Peltier element A silicon drift detector for cooling, wherein the X-ray fluorescence analyzer is for light elemental analysis with an atomic number of 50 or less, and the X-ray fluorescence analyzer is for heavy elemental analysis with an atomic number of 50 or more. This is a continuous analysis method for a certain cement raw material.

請求項1および請求項2に記載の発明によれば、ベルトコンベアによりセメント原料精粉を移送し、その途中で転圧ローラによりセメント原料精粉を転圧し、所定の厚さでその表面を均す。その後、転圧ローラより下流のベルトコンベア上で、ベルトコンベアの長さ方向に並設された、軽い元素分析用の蛍光X線分析器と、重い元素分析用の別の蛍光X線分析器とから、セメント原料精粉に対してそれぞれX線を照射し、セメント原料精粉から放出された蛍光X線のエネルギに基づき、セメント原料精粉中の目標成分を、エネルギ分散型の2つの蛍光X線分析器により連続または間欠に分析する。その結果、ライムメータを用いる従来装置の課題であった、放射性同位元素の管理義務を負うことなく、1台の連続分析装置によって、セメント原料精粉中のカルシウムを連続して分析することができる。その他、カルシウム以外の成分(セメント原料精粉中の軽い元素と重い元素)を連続して分析することができる。 According to the first and second aspects of the present invention, the cement raw material fine powder is transferred by the belt conveyor, and the cement raw material fine powder is rolled by the rolling roller in the middle thereof, and the surface thereof is leveled with a predetermined thickness. The Thereafter, a fluorescent X-ray analyzer for light elemental analysis and another fluorescent X-ray analyzer for heavy elemental analysis arranged in parallel in the length direction of the belt conveyor on the belt conveyor downstream from the rolling roller , from each for the cement raw material fine powder was irradiated with X-rays, based on the energy of the fluorescent X-rays emitted from the cement raw fine powder, the target component in the cement raw material Seiko, two fluorescent X energy dispersive Analyze continuously or intermittently with a line analyzer. As a result, it is possible to continuously analyze calcium in the cement raw material fine powder with one continuous analysis device without any obligation to manage radioisotopes, which was a problem with conventional devices using lime meters. . In addition, components other than calcium (light and heavy elements in cement raw fine powder) can be analyzed continuously.

以下、この発明の実施例を具体的に説明する。   Examples of the present invention will be specifically described below.

以下、この発明の実施例を図面を参照して説明する。
図1において、10はこの発明の実施例1に係るセメント原料の連続分析装置(以下、連続分析装置)で、この連続分析装置10は、セメント原料精粉aを移送するベルトコンベア11と、ベルトコンベア11の上方に設けられ、セメント原料精粉aを転圧してセメント原料精粉aの表面を均す転圧ローラ12と、ベルトコンベア11のうち、転圧ローラ12の設置位置より下流部分の上方に設けられ、セメント原料精粉aに1次X線(X線)を連続して照射し、セメント原料精粉aから放出された蛍光X線のエネルギに基づき、セメント原料精粉a中の目標成分を連続的に分析するエネルギ分散型の蛍光X線分析器13とを備えたものである。
Embodiments of the present invention will be described below with reference to the drawings.
In FIG. 1, reference numeral 10 denotes a cement raw material continuous analysis apparatus (hereinafter referred to as a continuous analysis apparatus) according to Embodiment 1 of the present invention. The continuous analysis apparatus 10 includes a belt conveyor 11 for transferring cement raw material fine powder a, and a belt. A rolling roller 12 provided above the conveyor 11 for rolling the cement raw material fine powder a and leveling the surface of the cement raw material fine powder a. Based on the energy of the fluorescent X-rays emitted from the cement raw material fine powder a and continuously irradiated with primary X-rays (X-rays) to the cement raw material fine powder a. An energy dispersive X-ray fluorescence analyzer 13 that continuously analyzes the target component is provided.

以下、これらの構成体を詳細に説明する。
セメント原料精粉aは、原料貯蔵庫に貯蔵された石灰石、粘土、珪石および鉄原料を原料とし、これらのセメント原料を、回転ドラムを回転させながら連続的に原料ミルに投入することで、セメント原料がおよそ90μm以下に粉砕される。得られたセメント原料精粉aは、その後、エアースライドにより貯蔵サイロに投入される。エアースライドの途中には分取管が連通され、分取されたセメント原料精粉aは連続分析装置10へ移送される。
Hereinafter, these components will be described in detail.
Cement raw material fine powder a is made from limestone, clay, silica and iron raw materials stored in a raw material storage, and these cement raw materials are continuously fed into a raw material mill while rotating a rotating drum. Is pulverized to about 90 μm or less. The obtained cement raw material fine powder a is then put into a storage silo by an air slide. In the middle of the air slide, a sorting pipe is communicated, and the sorted cement raw material fine powder a is transferred to the continuous analyzer 10.

次に、実施例1の連続分析装置10を具体的に説明する。
ベルトコンベア11は、ヘッドプーリ14とテールプーリ15との間に無端ベルト16が架け渡されたものである。分取管の排出口から投下されたセメント原料精粉aは、無端ベルト16のテールプーリ15側の端部に落下し、その後、無端ベルト16の回転に伴い、ヘッドプーリ14側へ連続して移送される。ベルトコンベア11のヘッドプーリ14側の端から落下したセメント原料精粉aは、移送管30の投入口30aに投入され、移送管30を通してプレヒータへ移送される。
転圧ローラ12は、その軸線方向をコンベア幅方向へ向けた鋼製のローラである。転圧ローラ12は、コンベア長さ方向の中間点から無端ベルト16のセメント原料精粉aの投下位置近くまでの領域に、互いに離間して3本配設されている。
Next, the continuous analysis apparatus 10 of Example 1 will be specifically described.
In the belt conveyor 11, an endless belt 16 is bridged between a head pulley 14 and a tail pulley 15. The cement material fine powder a dropped from the outlet of the sorting pipe falls to the end of the endless belt 16 on the tail pulley 15 side, and then continuously transfers to the head pulley 14 side as the endless belt 16 rotates. Is done. The cement raw material fine powder a dropped from the end of the belt conveyor 11 on the side of the head pulley 14 is charged into the charging port 30a of the transfer pipe 30 and transferred to the preheater through the transfer pipe 30.
The rolling roller 12 is a steel roller whose axis is directed in the conveyor width direction. Three rolling rollers 12 are arranged apart from each other in a region from the intermediate point in the conveyor length direction to the vicinity of the dropping position of the cement raw material fine powder a of the endless belt 16.

次に、図2を参照して、蛍光X線分析器13を詳細に説明する。
蛍光X線分析器13は、そのセメント原料精粉aに前記1次X線17を照射するX線管などのX線源18と、セメント原料精粉aから発生した前記蛍光X線19を検出するシリコンドリフト検出器(エネルギ分散型の蛍光X線分析器)23とを備えている。
X線源18のX線管ターゲットは、タングステンとする。蛍光X線分析器13としては、汎用のポータブル型の装置を使用する。
セメント原料精粉aとシリコンドリフト検出器23の受光窓とのクリアランスは、あらかじめ静止試料のX線強度を測定し、この測定値の近似値が得られる3mmに設定されている。これにより、セメント原料精粉aを高感度に測定することができる。
Next, the fluorescent X-ray analyzer 13 will be described in detail with reference to FIG.
The fluorescent X-ray analyzer 13 detects an X-ray source 18 such as an X-ray tube that irradiates the cement raw material fine powder a with the primary X-ray 17 and the fluorescent X-ray 19 generated from the cement raw fine powder a. And a silicon drift detector (energy dispersive X-ray fluorescence analyzer) 23.
The X-ray tube target of the X-ray source 18 is tungsten. As the fluorescent X-ray analyzer 13, a general-purpose portable apparatus is used.
The clearance between the cement raw fine powder a and the light receiving window of the silicon drift detector 23 is set to 3 mm so that an X-ray intensity of a stationary sample is measured in advance and an approximate value of this measured value is obtained. Thereby, the cement raw material refined powder a can be measured with high sensitivity.

次に、図1および図2を参照して、実施例1に係る連続分析装置10を用いたセメント原料の連続分析方法を説明する。
図1に示すように、貯蔵サイロへの移送中に分取されたセメント原料精粉aは、分取管から無端ベルト16のテールプーリ15側の端部に投下される。その後、無端ベルト16の回転に伴い、ヘッドプーリ14側へ連続して移送される。その途中、セメント原料精粉aは、3本の円柱状の転圧ローラ12により転圧される。転圧されたセメント原料精粉aは表面が平坦で、所定厚さに均される。
Next, with reference to FIG. 1 and FIG. 2, the continuous analysis method of the cement raw material using the continuous analysis apparatus 10 which concerns on Example 1 is demonstrated.
As shown in FIG. 1, the cement raw material fine powder a sorted during the transfer to the storage silo is dropped from the sorting pipe to the end of the endless belt 16 on the tail pulley 15 side. Thereafter, as the endless belt 16 rotates, it is continuously transferred to the head pulley 14 side. In the middle of the process, the cement raw material fine powder a is pressed by three cylindrical rolling rollers 12. The compacted cement raw material fine powder a has a flat surface and is leveled to a predetermined thickness.

次いで、セメント原料精粉aは、図2に示す蛍光X線分析器13の直下へ連続的に移送される。ここでは、セメント原料精粉a中の軽い元素(原子番号50以下の元素)であるカルシウムの分析を行う。
すなわち、ベルトコンベア11上のセメント原料精粉aに、X線源18から1次X線17を出力0.9W、管電圧6KVで常時照射し、セメント原料精粉aから発生した蛍光X線19をシリコンドリフト検出器23により測定する。測定信号は、マルチチャネルアナライザー(アワーズテック株式会社製)を用いて波高を分析し、デジタルシグナルプロセッサー(アワーズテック株式会社製)を用いてカウント数を測定する。これにより、セメント原料精粉aのカルシウム成分が分析される。測定時に、ベルトコンベア11の回転を停止すれば、セメント原料精粉aのカルシウム成分の分析精度が高まる。
Next, the cement raw material fine powder a is continuously transferred directly below the fluorescent X-ray analyzer 13 shown in FIG. Here, the analysis of calcium which is a light element (element having an atomic number of 50 or less) in the cement raw material fine powder a is performed.
That is, the primary X-ray 17 from the X-ray source 18 is always irradiated to the cement raw material fine powder a on the belt conveyor 11 at an output of 0.9 W and a tube voltage of 6 KV, and the fluorescent X-ray 19 generated from the cement raw material fine powder a. Is measured by the silicon drift detector 23. For the measurement signal, the wave height is analyzed using a multi-channel analyzer (available from Hours Tech Co., Ltd.), and the count number is measured using a digital signal processor (available from Hours Tech Co., Ltd.). Thereby, the calcium component of the cement raw material refined powder a is analyzed. If the rotation of the belt conveyor 11 is stopped during the measurement, the analysis accuracy of the calcium component of the cement raw material fine powder a is increased.

また、例えばX線源18におけるX線管ターゲットを鉛に変更し、セメント原料精粉a中の重い元素(原子番号50を超える元素)のクロムなどを分析することもできる。さらに、X線管ターゲットを軽い元素分析用のタングステンとした蛍光X線分析器13と、X線管ターゲットを重い元素分析用の鉛とした別の蛍光X線分析器13A(図1中の二点鎖線)とを、ベルトコンベア11の長さ方向に並設すれば、セメント原料精粉a中の軽い元素と重い元素とを、1台の連続分析装置10を使用して連続的に分析することができる。   Further, for example, the X-ray tube target in the X-ray source 18 can be changed to lead, and chromium or the like of heavy elements (elements exceeding atomic number 50) in the cement raw material fine powder a can be analyzed. Further, a fluorescent X-ray analyzer 13 using tungsten for light elemental analysis as an X-ray tube target, and another fluorescent X-ray analyzer 13A (two in FIG. 1) using lead for heavy elemental analysis as an X-ray tube target. (Dotted line) are arranged side by side in the length direction of the belt conveyor 11, the light element and the heavy element in the cement raw material fine powder a are continuously analyzed using one continuous analyzer 10. be able to.

このように、ベルトコンベア11による移送中、転圧ローラ12によりセメント原料精粉aを転圧し、その後、蛍光X線分析器13によりセメント原料精粉a中の目標成分をエネルギ分散型の蛍光X線分析器13により連続的に分析するようにしたので、セメント原料精粉a中の目標成分を連続して分析することができる。しかも、従来の連続分析装置が利用していたFe−55を使わないので、放射線被曝の危険性と高額な管理費とを負担しなければならない放射性同位元素の管理義務を負わなくてもよい。その他、セメントの原料精粉中のカルシウムをはじめその他の目標成分を分析することができる。   In this way, during the transfer by the belt conveyor 11, the cement raw material fine powder a is rolled by the rolling roller 12, and then the target component in the cement raw material fine powder a is converted to the energy dispersive fluorescent X by the fluorescent X-ray analyzer 13. Since the analysis is continuously performed by the line analyzer 13, the target component in the cement raw material fine powder a can be continuously analyzed. In addition, since Fe-55 used by the conventional continuous analyzer is not used, it is not necessary to bear the duty of managing radioisotopes that must bear the risk of radiation exposure and high management costs. In addition, other target components such as calcium in the raw material powder of cement can be analyzed.

この発明の実施例1に係るセメント原料の連続分析装置の正面図である。It is a front view of the continuous analysis apparatus of the cement raw material which concerns on Example 1 of this invention. この発明の実施例1に係るセメント原料の連続分析装置に内蔵された蛍光X線分析器の概略構成を示す側面図である。It is a side view which shows schematic structure of the fluorescent X ray analyzer incorporated in the continuous analysis apparatus of the cement raw material which concerns on Example 1 of this invention.

10 セメント原料の連続分析装置、
11 ベルトコンベア、
12 転圧ローラ、
13 蛍光X線分析器、
17 1次X線(X線)、
19 蛍光X線、
a セメント原料精粉。
10 Cement raw material continuous analysis equipment,
11 Belt conveyor,
12 Rolling roller,
13 X-ray fluorescence analyzer,
17 Primary X-ray (X-ray),
19 X-ray fluorescence,
a Cement raw fine powder.

Claims (2)

セメント原料精粉を移送するベルトコンベアと、
該ベルトコンベアの上方に設けられ、前記セメント原料精粉を転圧してその表面を均す転圧ローラと、
前記ベルトコンベアのうち、前記転圧ローラの設置位置より下流位置で、前記ベルトコンベアの上方に設けられ、前記セメント原料精粉にX線を照射し、この照射されたセメント原料精粉から放出された蛍光X線のエネルギに基づき、このセメント原料精粉の成分を連続または間欠に分析するエネルギ分散型の蛍光X線分析器と
前記ベルトコンベアのうち、前記転圧ローラの設置位置より下流位置で、かつ前記蛍光X線分析器と前記ベルトコンベアの長さ方向に並ぶように、前記ベルトコンベアの上方に設けられるとともに、前記セメント原料精粉にX線を照射し、この照射されたセメント原料精粉から放出された蛍光X線のエネルギに基づき、このセメント原料精粉の成分を連続または間欠に分析するエネルギ分散型の別の蛍光X線分析器とを備え、
前記蛍光X線分析器および前記別の蛍光X線分析器は、いずれもペルチェ素子によって冷却を行うシリコンドリフト検出器で、前記蛍光X線分析器は、原子番号50以下の軽い元素分析用のもので、前記別の蛍光X線分析器は、原子番号50を超える重い元素分析用のものであるセメント原料の連続分析装置。
A belt conveyor for transferring cement raw fine powder;
A rolling roller provided above the belt conveyor, for rolling the cement raw material fine powder and leveling the surface thereof;
Among the belt conveyors , it is provided above the belt conveyor at a position downstream from the installation position of the rolling roller, and the cement raw material fine powder is irradiated with X-rays and emitted from the irradiated cement raw material fine powder. An energy dispersive fluorescent X-ray analyzer that continuously or intermittently analyzes the components of the cement raw material fine powder based on the energy of the fluorescent X-ray ,
Among the belt conveyors, the belt conveyor is provided above the belt conveyor so as to be arranged downstream from the installation position of the rolling roller and in the longitudinal direction of the fluorescent X-ray analyzer and the belt conveyor, and the cement Another type of energy dispersion type that irradiates the raw material fine powder with X-rays and analyzes the components of the cement raw material fine powder continuously or intermittently based on the energy of the fluorescent X-rays emitted from the irradiated cement raw material fine powder. An X-ray fluorescence analyzer ,
The X-ray fluorescence analyzer and the other X-ray fluorescence analyzer are both silicon drift detectors that are cooled by Peltier elements, and the X-ray fluorescence analyzer is for light elemental analysis with an atomic number of 50 or less. The another fluorescent X-ray analyzer is a cement raw material continuous analysis apparatus for heavy elemental analysis exceeding atomic number 50 .
ベルトコンベアにより移送中のセメント原料精粉を転圧ローラにより転圧し、その表面を均す転圧工程と、
前記ベルトコンベアのうち、前記転圧ローラの設置位置より下流位置で、前記セメント原料精粉にX線を照射し、この照射されたセメント原料精粉から放出された蛍光X線のエネルギに基づき、このセメント原料精粉の成分をエネルギ分散型の蛍光X線分析器により連続または間欠に分析する分析工程と、
前記ベルトコンベアのうち、前記転圧ローラの設置位置より下流位置で、かつ前記蛍光X線分析器と前記ベルトコンベアの長さ方向に並ぶように設けられて、前記セメント原料精粉にX線を照射し、この照射されたセメント原料精粉から放出された蛍光X線のエネルギに基づき、このセメント原料精粉の成分をエネルギ分散型の別の蛍光X線分析器により連続または間欠に分析する別の分析工程とを備え
前記蛍光X線分析器および前記別の蛍光X線分析器は、いずれもペルチェ素子によって冷却を行うシリコンドリフト検出器で、
前記蛍光X線分析器は、原子番号50以下の軽い元素分析用のもので、
前記蛍光X線分析器は、原子番号50を超える重い元素分析用のものであるセメント原料の連続分析方法。
A rolling process in which the cement raw material fine powder being transferred by the belt conveyor is pressed by a rolling roller and the surface is leveled;
Of the belt conveyor, the cement raw material fine powder is irradiated with X-rays at a position downstream from the setting position of the rolling roller, and based on the energy of fluorescent X-rays emitted from the irradiated cement raw material fine powder, An analysis process for analyzing the components of the cement raw material fine powder continuously or intermittently by an energy dispersive fluorescent X-ray analyzer;
Among the belt conveyors, the belt conveyor is disposed downstream from the installation position of the rolling roller and is arranged in the longitudinal direction of the fluorescent X-ray analyzer and the belt conveyor. The component of the cement raw material fine powder is continuously or intermittently analyzed by another energy dispersive fluorescent X-ray analyzer based on the energy of the fluorescent X-ray emitted from the irradiated cement raw material fine powder. and an analysis step of,
Both the X-ray fluorescence analyzer and the other X-ray fluorescence analyzer are silicon drift detectors that are cooled by a Peltier element,
The X-ray fluorescence analyzer is for light elemental analysis with an atomic number of 50 or less,
The fluorescent X-ray analyzer is a continuous analysis method for a cement raw material for heavy elemental analysis exceeding atomic number 50 .
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