JP2010084183A - Method for controlling layer thickness level of sintering raw material in sintering machine - Google Patents

Method for controlling layer thickness level of sintering raw material in sintering machine Download PDF

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JP2010084183A
JP2010084183A JP2008253807A JP2008253807A JP2010084183A JP 2010084183 A JP2010084183 A JP 2010084183A JP 2008253807 A JP2008253807 A JP 2008253807A JP 2008253807 A JP2008253807 A JP 2008253807A JP 2010084183 A JP2010084183 A JP 2010084183A
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raw material
sintering
ignition
material layer
sintering raw
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JP5597918B2 (en
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Takanori Hirota
孝紀 弘田
Masaya Kato
真哉 加藤
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JFE Steel Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for controlling a layer thickness level of sintering raw material in a sintering machine by which the layer thickness of the sintering raw material at the inlet side of the sintering machine can be controlled. <P>SOLUTION: The amount of loss-in-volume of the sintering raw material when the ignition-suction is started, is obtained from the sintering raw material layer thickness level Lv1 detected at an ignition furnace inlet side and the sintering raw material layer thickness level Lv2 detected at the ignition furnace outlet side, and the gate-opening degree of dividing gates 3 is adjusted according to the amount of loss-in-volume, thereby the layer thickness of the sintering raw material at the sintering machine inlet side is suitably controlled by suitably feeding back the amount of reduction in the sintering raw material layer measured when the ignition-suction is started. In another embodiment, for the amount of loss-in-volume of the sintering raw materials when the ignition-suction is started, the adjustment amount of the gate-opening degree of the dividing gates 3 is corrected by using the ratio between the density of the sintering raw material layer before staring the ignition-suction and the density of the sintering raw material when the ignition-suction is started and thereby, the amount of reduction in the sintering raw material when the ignition-suction is started, can suitably be fed back as mass. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、焼結機の焼結原料層厚レベル制御方法に関し、例えば鉄鉱石・コークス・石炭から焼結鉱を生成するのに好適なものである。   The present invention relates to a sintering raw material layer thickness level control method for a sintering machine, and is suitable for producing sintered ore from, for example, iron ore, coke, and coal.

焼結工場では、鉄鉱石・粉コークス・石炭を焼結機のパレットにドラムフィーダを用いて装入し、この原料に点火炉で点火し、パレット下方の風箱から主排風機によって吸引を行って焼結鉱を生成する。ドラムフィーダへの焼結原料を貯留するホッパーの排出部には、焼結機幅方向に分割され且つ個々にゲート開度を調整可能な分割ゲートが設けられており、この分割ゲートのゲート開度を調整することで、生成される焼結鉱の強度・粒度が均質になるように、装入原料層厚のレベル制御を行っている。このような焼結原料層厚レベル制御としては、例えば下記特許文献１に記載されるように、焼結機の給鉱側と排鉱側の夫々に、複数のレベル計を幅方向に並べて配置し、これらのレベル計で給鉱部の層厚と排鉱部の層厚を測定して収縮率を算出し、その収縮率から求めた焼結鉱の冷間強度と気孔率の幅方向偏差が最小となる給鉱部の原料装入密度を算出し、その装入密度となるように分割ゲートのゲート開度を制御するようにしている。
特開平５−５５８９号公報 At the sintering plant, iron ore, powdered coke, and coal are charged into the pallet of the sintering machine using a drum feeder, the raw material is ignited in an ignition furnace, and suctioned from the wind box below the pallet by the main exhaust fan. To produce sintered ore. The discharge part of the hopper that stores the sintering raw material to the drum feeder is provided with a divided gate that is divided in the width direction of the sintering machine and whose gate opening can be individually adjusted. By adjusting the level, the level of the charged raw material layer is controlled so that the strength and particle size of the sintered ore produced are uniform. As such a sintering raw material layer thickness level control, for example, as described in Patent Document 1 below, a plurality of level meters are arranged in the width direction on each of the supply side and the discharge side of the sintering machine. The shrinkage rate is calculated by measuring the layer thickness of the supply section and the discharge section with these level gauges, and the deviation in the width direction of the cold strength and porosity of the sintered ore obtained from the shrinkage rate The raw material charging density of the mining section that minimizes is calculated, and the gate opening of the split gate is controlled so as to be the charging density.
JP-A-5-5589

しかしながら、前記特許文献１に記載される焼結機の焼結原料層厚レベル制御方法では、給鉱部の層厚と排鉱部の層厚から収縮率を求めて分割ゲートのゲート開度を制御するようにしているが、焼結機の排鉱部では、焼結鉱は焼き終わった後であり、その厚さ変動が大きすぎて最入側での層厚レベル制御には不向きである。
本発明は、上記のような問題点に着目してなされたものであり、焼結機入側の焼結原料の層厚を適正に制御することができる焼結機の焼結原料層厚レベル制御方法を提供することを目的とするものである。 However, in the sintering raw material layer thickness level control method of the sintering machine described in Patent Document 1, the contraction rate is obtained from the layer thickness of the supply portion and the layer thickness of the discharge portion, and the gate opening of the divided gate is determined. Although it is controlled, in the exhaust section of the sintering machine, the sintered ore is after it has been baked, and its thickness variation is too large to be suitable for controlling the layer thickness level on the closest side. .
The present invention has been made paying attention to the above problems, and the sintering material layer thickness level of the sintering machine capable of appropriately controlling the layer thickness of the sintering material on the sintering machine entrance side. The object is to provide a control method.

上記課題を解決するために、本発明の焼結機の焼結原料層厚レベル制御方法は、焼結原料を貯留するホッパーの排出部に、焼結機幅方向に分割され且つ個々にゲート開度を調整可能な分割ゲートを備えた焼結機の焼結原料層厚レベル制御方法において、点火炉入側で検出された焼結原料層厚レベルと点火炉出側で検出された焼結原料層厚レベルから点火・吸引開始時の焼結原料層の嵩目減り量を求め、この点火・吸引開始時の焼結原料層の嵩目減り量に応じて前記分割ゲートのゲート開度を調整することを特徴とするものである。   In order to solve the above problems, the sintering raw material layer thickness level control method of the sintering machine of the present invention is divided into the discharge part of the hopper storing the sintering raw material in the width direction of the sintering machine and individually gate-opened. In the sintering raw material layer thickness level control method of a sintering machine having a split gate capable of adjusting the degree, the sintering raw material layer thickness level detected on the ignition furnace entrance side and the sintering raw material detected on the ignition furnace exit side Obtain the bulk reduction amount of the sintering raw material layer at the start of ignition / suction from the layer thickness level, and adjust the gate opening of the divided gate according to the bulk reduction amount of the sintering raw material layer at the start of ignition / suction It is characterized by.

また、前記点火・吸引開始時の焼結原料層の嵩目減り量に対し、点火・吸引開始前の焼結原料層の密度と点火・吸引開始時の焼結原料層の密度の比を用いて前記分割ゲートのゲート開度調整量を補正することを特徴とするものである。
また、前記点火炉入側で検出された焼結原料層厚レベルから当該点火炉入側の焼結原料層質量誤差を求め、この点火炉入側の焼結原料層質量誤差から前記分割ゲートのゲート開度調整量の基準値を設定することを特徴とするものである。 Further, for the bulk reduction amount of the sintering material layer at the start of ignition / suction, the ratio of the density of the sintering material layer before starting ignition / suction and the density of the sintering material layer at the start of ignition / suction is used. The gate opening adjustment amount of the divided gate is corrected.
Further, a sintering raw material layer mass error on the ignition furnace inlet side is obtained from the sintering raw material layer thickness level detected on the ignition furnace inlet side, and the divided gate of the split gate is calculated from the sintering raw material layer mass error on the ignition furnace inlet side. A reference value for the gate opening adjustment amount is set.

而して、本発明の焼結機の焼結原料層厚レベル制御方法によれば、点火炉入側で検出された焼結原料層厚レベルと点火炉出側で検出された焼結原料層厚レベルから点火・吸引開始時の焼結原料層の嵩目減り量を求め、この点火・吸引開始時の焼結原料層の嵩目減り量に応じて分割ゲートのゲート開度を調整する構成としたため、点火・吸引開始時の焼結原料層の減少分を適正にフィードバックすることができ、これにより焼結機入側の焼結原料の層厚を適正に制御することができる。
また、点火・吸引開始時の焼結原料層の嵩目減り量に対し、点火・吸引開始前の焼結原料層の密度と点火・吸引開始時の焼結原料層の密度の比を用いて分割ゲートのゲート開度調整量を補正する構成としたため、点火・吸引開始時の焼結原料層の減少分を質量として適正にフィードバックすることが可能となる。 Thus, according to the sintering material layer thickness level control method of the sintering machine of the present invention, the sintering material layer thickness level detected on the ignition furnace entrance side and the sintering material layer thickness detected on the ignition furnace exit side Since the bulk reduction amount of the sintering raw material layer at the start of ignition / suction is obtained from the thickness level, and the gate opening of the split gate is adjusted according to the bulk reduction amount of the sintering raw material layer at the start of ignition / suction The amount of decrease in the sintering material layer at the start of ignition / suction can be appropriately fed back, and the layer thickness of the sintering material on the sintering machine input side can be appropriately controlled.
Also, for the bulk reduction amount of the sintering raw material layer at the start of ignition / suction, it is divided using the ratio of the density of the sintering raw material layer before the start of ignition / suction and the density of the sintering raw material layer at the start of ignition / suction Since the gate opening adjustment amount of the gate is corrected, it is possible to appropriately feed back the amount of decrease in the sintering raw material layer at the start of ignition / suction as the mass.

また、点火炉入側で検出された焼結原料層厚レベルから当該点火炉入側の焼結原料層質量誤差を求め、この点火炉入側の焼結原料層質量誤差から分割ゲートのゲート開度調整量の基準値を設定する構成としたため、点火・吸引開始前の焼結原料層の密度と点火・吸引開始時の焼結原料層の密度の比を用いた点火・吸引開始時の焼結原料層の質量の減少分と合わせて、焼結機入側の焼結原料の層厚をより一層適正に制御することができる。   In addition, the sintering raw material layer mass error at the ignition furnace inlet side is obtained from the sintering raw material layer thickness level detected at the ignition furnace inlet side, and the gate opening of the split gate is calculated from the sintering raw material layer mass error at the ignition furnace inlet side. Since the reference value for the degree of adjustment is set, the firing ratio at the start of ignition / suction using the ratio of the density of the sintering raw material layer before ignition / suction start and the density of the sintering raw material layer at the start of ignition / suction is used. Together with the decrease in the mass of the binder layer, the layer thickness of the sintering raw material on the sintering machine entrance side can be controlled more appropriately.

次に、本発明の焼結機の焼結原料層厚レベル制御方法の一実施形態について図面を参照しながら説明する。
図１は、焼結機入側における焼結原料装入部を示したものであり、焼結原料は図示しないパレット上を、同図の矢印方向に搬送される。この矢印方向と交差する方向を焼結機の幅方向と定義する。図柱の符号１は、焼結原料を貯留するホッパー、符号２は、ホッパー１から切出された焼結原料をパレット上に拡散して装入するドラムフィーダである。ホッパーの排出部、ドラムフィーダ２の装入部には、焼結機の幅方向に計７個の分割ゲート３（符号が示しているのは、厳密には、分割ゲートを駆動するアクチュエータである）が等間隔に配設されており、図示しない制御装置（演算装置）からの指令によって、夫々のゲート開度を調整することで、該当する部位の焼結原料の切出し量を増減制御することができる。なお、ドラムフィーダ２の排出部には、図示しないカットオフプレートが配設されている。このカットオフプレートは、所謂均し板であり、焼結原料の層厚方向に余剰な部分を不足の部分に補って、層厚を一様にするものである。 Next, an embodiment of a sintering raw material layer thickness level control method for a sintering machine of the present invention will be described with reference to the drawings.
FIG. 1 shows a sintering raw material charging portion on the inlet side of the sintering machine, and the sintering raw material is conveyed on a pallet (not shown) in the direction of the arrow in the figure. The direction crossing this arrow direction is defined as the width direction of the sintering machine. Reference numeral 1 in the figure column denotes a hopper that stores the sintered raw material, and reference numeral 2 denotes a drum feeder that diffuses and charges the sintered raw material cut out from the hopper 1 onto the pallet. The discharge portion of the hopper and the insertion portion of the drum feeder 2 are divided into a total of seven divided gates 3 in the width direction of the sintering machine (symbols indicate actuators that drive the divided gates). ) Are arranged at equal intervals, and by adjusting the gate opening degree according to a command from a control device (arithmetic device) (not shown), the amount of cut out of the sintering raw material at the corresponding part is controlled to increase or decrease. Can do. Note that a cut-off plate (not shown) is disposed at the discharge portion of the drum feeder 2. This cut-off plate is a so-called leveling plate, and makes the layer thickness uniform by making up an excess portion in the layer thickness direction of the sintering raw material with an insufficient portion.

ドラムフィーダ２の焼結原料搬送方向先方、所謂出側には、焼結原料を点火する点火炉４が設けられている。この点火炉４で焼結原料を点火し、パレット下の風箱から図示しない主排風機で吸引することで焼結工程が開始される。本実施形態では、この点火炉４の入側に、計６個の入側層厚レベルセンサ５を等間隔に配設し、出側にも、計６個の出側層厚レベルセンサ６を等間隔に配設した。各層厚レベルセンサ５，６は、共にパレット上の焼結原料層の高さを検出し、その高さを焼結原料層厚のレベルとして検出するものである。従って、入側層厚レベルセンサ５は、点火・吸引開始前の焼結原料の層厚レベルＬｖ１を検出し、出側層厚レベルセンサ６は、点火・吸引開始時の焼結原料の層厚レベルＬｖ２を検出する。   An ignition furnace 4 for igniting the sintered material is provided at the so-called outlet side of the drum feeder 2 in the direction of conveying the sintered material. The sintering process is started by igniting the sintering raw material in the ignition furnace 4 and sucking it from a wind box below the pallet by a main exhaust fan (not shown). In the present embodiment, a total of six entrance layer thickness level sensors 5 are arranged at equal intervals on the entrance side of the ignition furnace 4, and a total of 6 exit layer thickness levels sensors 6 are disposed on the exit side. Arranged at equal intervals. Each of the layer thickness level sensors 5 and 6 detects the height of the sintering material layer on the pallet and detects the height as the level of the sintering material layer thickness. Accordingly, the entry side layer thickness level sensor 5 detects the layer thickness level Lv1 of the sintering material before starting ignition / suction, and the exit side layer thickness level sensor 6 is the layer thickness of the sintering material at the start of ignition / suction. The level Lv2 is detected.

前記制御装置（演算装置）では、前記入側層厚レベルセンサ５で検出された点火・吸引開始前の焼結原料の層厚レベルＬｖ１及び出側層厚レベルセンサ６で検出された点火・吸引開始時の焼結原料温層厚レベルＬｖ２を用い、下記１式に従って、各分割ゲート３のｔ秒後のゲート開度（正確にはゲート開度補正量）Ｇ（ｔ）を算出し、そのゲート開度が達成されるようにアクチュエータを駆動する。
Ｇ（ｔ）＝α・（（Ｓ−Ｌｖ１（ｔ））・Ｌ１・Ｌ２・Ｄｓ
＋β（Ｌｖ１（ｔ）−Ｌｖ２（ｔ＋Ｔ））・Ｌ３・Ｌ４・Ｄｓ）… (1) In the control device (arithmetic unit), the layer thickness level Lv1 of the sintering raw material detected by the entry side layer thickness level sensor 5 and the ignition / suction detected by the exit side layer thickness level sensor 6 before the start of ignition / suction. Using the sintering raw material warm layer thickness level Lv2 at the start, according to the following equation (1), the gate opening (correctly, gate opening correction amount) G (t) after t seconds of each divided gate 3 is calculated, The actuator is driven so that the gate opening is achieved.
G (t) = α · ((S−Lv1 (t)) · L1 · L2 · Ds
+ Β (Lv1 (t) −Lv2 (t + T)) · L3 · L4 · Ds) (1)

α：質量−ゲート開度変換係数（％／ｋｇ）
Ｓ：点火・吸引開始前焼結原料層厚レベル目標値（ｍ）
Ｌ１：入側層厚レベルセンサの間隔（ｍ）
Ｌ２：パレットへの焼結原料装入部から入側層厚レベルセンサまでの距離（ｍ）
Ｄｓ：点火・吸引開始前焼結原料嵩密度（ｋｇ／ｍ３）
β：点火・吸引開始前後焼結原料嵩密度補正係数（−）
Ｔ：入側層厚レベルセンサから出側層厚レベルセンサまでの原料到達時間（ｓ）
Ｔ＝Ｌ４／Ｖｓ
Ｖｓ：焼結機速度（ｍ／ｓ）
Ｌ３：出側層厚レベルセンサの間隔（ｍ）
Ｌ４：入側層厚レベルセンサから出側層厚レベルセンサまでの距離（ｍ） α: Mass-gate opening conversion coefficient (% / kg)
S: Sintering raw material layer thickness level target value (m) before ignition / suction start
L1: Distance between entrance layer thickness level sensors (m)
L2: Distance (m) from the sintering raw material charging part to the pallet thickness level sensor on the pallet
Ds: Bulk density of sintered raw material before starting ignition / suction (kg / m 3 )
β: Sintered raw material bulk density correction coefficient before and after ignition / suction start (−)
T: Raw material arrival time from entry side layer thickness level sensor to exit side layer thickness level sensor (s)
T = L4 / Vs
Vs: Sintering machine speed (m / s)
L3: Distance between outlet layer thickness level sensors (m)
L4: Distance (m) from the inlet side layer thickness level sensor to the outlet side layer thickness level sensor

１式（ ）内の第１項は、入側層厚レベルセンサ５で検出された点火炉入側、つまり点火・吸引開始前の焼結原料層厚レベルＬｖ１と目標比との差から求められる焼結原料層質量誤差であり、この点火炉入側の焼結原料層質量誤差から分割ゲート３のゲート開度調整量の基準値が設定されることになる。一方、１式（ ）内の第２項は、入側層厚レベルセンサ５で検出された点火炉入側、つまり点火・吸引開始前の焼結原料層厚レベルＬｖ１と出側層厚レベルセンサ６で検出された点火炉出側、つまり点火・吸引開始時の焼結原料層厚レベルＬｖ２の差に、点火・吸引開始前焼結原料嵩密度Ｄｓ及び点火・吸引開始前後焼結原料嵩密度補正係数βの積値、即ち点火・吸引開始時原料嵩密度Ｄｓ’を乗じた点火炉出側焼結原料層質量誤差であり、この点火炉出側焼結原料層質量誤差から分割ゲート３のゲート開度調整量の補正値が設定されることになる。つまり、焼結原料の点火／吸引開始により焼結原料の密度が増大し、それに伴って嵩が目減りするので、この嵩目減り量を求め、その分だけ、ゲート開度調整量を補正する。この点火・吸引開始前後焼結原料嵩密度補正係数βは、点火・吸引開始前の焼結原料層の密度と点火・吸引開始時の焼結原料層の密度の比であり、点火・吸引開始時の焼結原料層の嵩目減り量に対し、点火・吸引開始前の焼結原料層の密度と点火・吸引開始時の焼結原料層の密度の比を用いて分割ゲートのゲート開度を補正することにより、点火・吸引開始時の焼結原料層の減少分を質量として適正にフィードバックすることができる。   The first term in the formula (1) is obtained from the difference between the target ratio and the ignition furnace entry side detected by the entry side layer thickness level sensor 5, that is, the sintering raw material layer thickness level Lv1 before the start of ignition / suction. It is a sintering raw material layer mass error, and the reference value of the gate opening adjustment amount of the divided gate 3 is set from the sintering raw material layer mass error on the ignition furnace entrance side. On the other hand, the second term in the formula (1) is the ignition furnace entry side detected by the entry side layer thickness level sensor 5, that is, the sintering raw material layer thickness level Lv1 and the exit side layer thickness level sensor before starting ignition / suction. 6, the sintering raw material bulk density Ds before ignition / suction start, and the sintering raw material bulk density before and after ignition / suction start. The product value of the correction coefficient β, that is, the ignition furnace exit side sintered material layer mass error multiplied by the ignition / suction start material bulk density Ds ′. A correction value for the gate opening adjustment amount is set. That is, since the density of the sintered raw material is increased by the ignition / suction start of the sintered raw material, and the bulk is reduced accordingly, the bulk reduction amount is obtained, and the gate opening adjustment amount is corrected accordingly. The sintering raw material bulk density correction coefficient β before and after the start of ignition / suction is the ratio of the density of the sintered raw material layer before the start of ignition / suction and the density of the sintered raw material layer at the start of ignition / suction. The gate opening of the split gate is determined by using the ratio of the density of the sintering raw material layer before the start of ignition / suction and the density of the sintering raw material layer at the start of ignition / suction to the bulk reduction amount of the sintering raw material layer at the time. By correcting, the decrease of the sintering raw material layer at the start of ignition / suction can be appropriately fed back as the mass.

このように本実施形態の焼結機の焼結原料層厚レベル制御方法によれば、点火炉入側で検出された焼結原料層厚レベルＬｖ１と点火炉出側で検出された焼結原料層厚レベルＬｖ２から点火・吸引開始時の焼結原料層の嵩目減り量を求め、この点火・吸引開始時の焼結原料層の嵩目減り量に応じて分割ゲート３のゲート開度を調整することとしたため、点火・吸引開始時の焼結原料層の減少分を適正にフィードバックすることができ、これにより焼結機入側の焼結原料の層厚を適正に制御することができる。   Thus, according to the sintering raw material layer thickness level control method of the sintering machine of this embodiment, the sintering raw material layer thickness level Lv1 detected on the ignition furnace entrance side and the sintering raw material detected on the ignition furnace exit side The bulk reduction amount of the sintering raw material layer at the start of ignition / suction is obtained from the layer thickness level Lv2, and the gate opening of the divided gate 3 is adjusted according to the bulk reduction amount of the sintering raw material layer at the start of ignition / suction. Therefore, the amount of decrease in the sintering material layer at the start of ignition / suction can be properly fed back, and the layer thickness of the sintering material on the sintering machine input side can be controlled appropriately.

また、点火・吸引開始時の焼結原料層の嵩目減り量に対し、点火・吸引開始前の焼結原料層の密度と点火・吸引開始時の焼結原料層の密度の比、即ち点火・吸引開始前後焼結原料嵩密度補正係数βを用いて分割ゲート３のゲート開度調整量を補正することとしたため、点火・吸引開始時の焼結原料層の減少分を質量として適正にフィードバックすることが可能となる。   In addition, the ratio of the density of the sintered raw material layer before the start of ignition / suction and the density of the sintered raw material layer at the start of ignition / suction, i.e. Since the gate opening adjustment amount of the divided gate 3 is corrected using the sintered raw material bulk density correction coefficient β before and after the start of suction, the amount of decrease in the sintered raw material layer at the start of ignition and suction is appropriately fed back as a mass. It becomes possible.

また、点火炉入側で検出された焼結原料層厚レベルＬｖ１から当該点火炉入側の焼結原料層質量誤差を求め、この点火炉入側の焼結原料層質量誤差から分割ゲート３のゲート開度調整量の基準値を設定することとしたため、点火・吸引開始前の焼結原料層の密度と点火・吸引開始時の焼結原料層の密度の比を用いた点火・吸引開始時の焼結原料層の質量の減少分と合わせて、焼結機入側の焼結原料の層厚をより一層適正に制御することができる。   Moreover, the sintering raw material layer mass error on the ignition furnace inlet side is obtained from the sintering raw material layer thickness level Lv1 detected on the ignition furnace inlet side, and the division gate 3 is calculated from the sintering raw material layer mass error on the ignition furnace inlet side. Since the reference value of the gate opening adjustment amount was set, ignition / suction start using the ratio of the density of the sintering raw material layer before the start of ignition / suction and the density of the sintering raw material layer at the start of ignition / suction Together with the decrease in the mass of the sintering raw material layer, the layer thickness of the sintering raw material on the inlet side of the sintering machine can be more appropriately controlled.

本発明の焼結機の焼結原料層厚レベル制御方法の一実施形態を示す焼結機入側の斜視図である。It is a perspective view of the sintering machine entrance side which shows one Embodiment of the sintering raw material layer thickness level control method of the sintering machine of this invention.

符号の説明Explanation of symbols

１はホッパー、２はドラムフィーダ、３は分割ゲート、４は点火炉、５は入側層厚レベルセンサ、６は出側層厚レベルセンサ   1 is a hopper, 2 is a drum feeder, 3 is a split gate, 4 is an ignition furnace, 5 is an entrance layer thickness level sensor, and 6 is an exit layer thickness level sensor

Claims (3)

焼結原料を貯留するホッパーの排出部に、焼結機幅方向に分割され且つ個々にゲート開度を調整可能な分割ゲートを備えた焼結機の焼結原料層厚レベル制御方法において、点火炉入側で検出された焼結原料層厚レベルと点火炉出側で検出された焼結原料層厚レベルから点火・吸引開始時の焼結原料層の嵩目減り量を求め、この点火・吸引開始時の焼結原料層の嵩目減り量に応じて前記分割ゲートのゲート開度を調整することを特徴とする焼結機の焼結原料層厚レベル制御方法。   In the sintering raw material layer thickness level control method of a sintering machine provided with a dividing gate which is divided in the width direction of the sintering machine and can individually adjust the gate opening at the discharge part of the hopper for storing the sintering raw material, From the sintering raw material layer thickness level detected on the furnace entrance side and the sintering raw material layer thickness level detected on the ignition furnace exit side, the amount of bulk reduction of the sintering raw material layer at the start of ignition / suction is obtained, and this ignition / suction A sintering raw material layer thickness level control method for a sintering machine, wherein the gate opening of the divided gate is adjusted according to the bulk reduction amount of the sintering raw material layer at the start. 前記点火・吸引開始時の焼結原料層の嵩目減り量に対し、点火・吸引開始前の焼結原料層の密度と点火・吸引開始時の焼結原料層の密度の比を用いて前記分割ゲートのゲート開度調整量を補正することを特徴とする請求項１に記載の焼結機の焼結原料層厚レベル制御方法。   Using the ratio of the density of the sintered raw material layer before the start of ignition / suction and the density of the sintered raw material layer at the start of ignition / suction to the bulk reduction amount of the sintered raw material layer at the start of ignition / suction The method for controlling a sintering raw material layer thickness level of a sintering machine according to claim 1, wherein the gate opening adjustment amount of the gate is corrected. 前記点火炉入側で検出された焼結原料層厚レベルから当該点火炉入側の焼結原料層質量誤差を求め、この点火炉入側の焼結原料層質量誤差から前記分割ゲートのゲート開度調整量の基準値を設定することを特徴とする請求項２に記載の焼結機の焼結原料層厚レベル制御方法。   The sintering raw material layer mass error at the ignition furnace inlet side is obtained from the sintering raw material layer thickness level detected at the ignition furnace inlet side, and the gate opening of the split gate is determined from the sintering raw material layer mass error at the ignition furnace inlet side. The method for controlling a sintering raw material layer thickness level of a sintering machine according to claim 2, wherein a reference value of the degree adjustment amount is set.
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CN102072658A (en) * 2010-12-30 2011-05-25 中南大学 Sintering segregation distribution controlling method for stabilizing material layer thickness
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CN103033048A (en) * 2012-09-05 2013-04-10 宝钢集团新疆八一钢铁有限公司 Automatic control method for machine speed of material distributing system of sintering machine
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102042810A (en) * 2010-11-26 2011-05-04 长沙有色冶金设计研究院 Laser thickness measuring device of down-draft sintering material layer
CN102072658A (en) * 2010-12-30 2011-05-25 中南大学 Sintering segregation distribution controlling method for stabilizing material layer thickness
CN102706153A (en) * 2011-03-28 2012-10-03 宝山钢铁股份有限公司 Thick material layer sintering ore sintering distribution control method and distribution device thereof
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CN103033048B (en) * 2012-09-05 2014-09-10 宝钢集团新疆八一钢铁有限公司 Automatic control method for machine speed of material distributing system of sintering machine
CN112577318A (en) * 2020-12-02 2021-03-30 湖南中冶长天重工科技有限公司 Sintering machine material layer thickness control method and device and sintering machine

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