JPS6082623A - Blending process for raw material for sintering - Google Patents
Blending process for raw material for sinteringInfo
- Publication number
- JPS6082623A JPS6082623A JP18861283A JP18861283A JPS6082623A JP S6082623 A JPS6082623 A JP S6082623A JP 18861283 A JP18861283 A JP 18861283A JP 18861283 A JP18861283 A JP 18861283A JP S6082623 A JPS6082623 A JP S6082623A
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- brand
- sintering
- density
- raw materials
- 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
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- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
OJh明の技術分野〕
木光り1は、焼結鉱の成分安定を図るための焼結原料の
配合方法に関する。DETAILED DESCRIPTION OF THE INVENTION OJh Akira's Technical Field] Kimitsu 1 relates to a method of blending sintering raw materials for stabilizing the components of sintered ore.
焼結鉱の成分安定は、焼結鉱の品質(T、1.R,IC
I等)の安定に不可欠であることは周知である。従来、
かかる成分安定法としては、焼結鉱の成分分析値を基に
してフィードバック制御を行っている。しかし、これで
は成分安定のためのアクションが遅れるとともに、分析
試料の配合原料成分と現在の配合原料の成分が同一であ
るとの仮定に立脚したアクションであるため、次述する
原因によって生じる各鉱石の粒度変化による配合原料の
成分変化を把握できず、アクションとして不正確になら
ざるを得ない。The component stability of sintered ore is determined by the quality of sintered ore (T, 1.R, IC
It is well known that it is essential for the stability of Conventionally,
As such a component stabilization method, feedback control is performed based on component analysis values of sintered ore. However, this will delay the action to stabilize the ingredients, and since the action is based on the assumption that the ingredients of the blended raw materials of the analysis sample and the current blended raw materials are the same, each ore that occurs due to the following reasons It is not possible to understand changes in the composition of the blended raw materials due to changes in particle size, and the actions are inevitably inaccurate.
ところで、焼結原料は、各種銘柄の粉鉄鉱石を主成分に
して、N1スラグ、砕砂、ドロマイト、石灰石等の副原
料と、燃料としての粉コークスを程合したものである。Incidentally, the sintering raw material is a mixture of powdered iron ore of various brands as a main component, auxiliary materials such as N1 slag, crushed sand, dolomite, limestone, and coke powder as a fuel.
この焼結原料の各銘柄ごとの配合は、各銘柄こと貯留さ
、れた原料槽から切出し、これらをドラムミキサーによ
り混合するものであるが、原#1槽からの切出しに際し
、所定の割合の切出しであっても、各銘柄の原料槽内の
偏析に左右されて、必らずしも一定成分の焼結原料とな
らないことが多い。The formulation for each brand of this sintering raw material is that each brand is cut out from the stored raw material tank and mixed with a drum mixer. Even if it is cut out, it often does not necessarily result in a sintered raw material with a constant composition, depending on the segregation within the raw material tank of each brand.
すなわぢ、各銘柄ごとに貯留された原j11槽内の原料
は、原料槽の中心部に供給されるため、そこが山形とな
り、細粒を中心にして貯留され、原料槽の側壁部には装
入原料が中央部から側壁部に向って転動するために、相
Rを中心にして貯留される。したがって、原料槽からの
原料切出し過程において、初期は細粒のものが多く切出
され、後期は粗粒のものが多く切出されることとなる。In other words, the raw materials stored in the raw material tank J11 for each brand are supplied to the center of the raw material tank, so it forms a mountain shape, and the fine particles are stored mainly, and the raw materials are stored on the side wall of the raw material tank. is stored around phase R because the charged raw material rolls from the center toward the sidewalls. Therefore, in the raw material cutting process from the raw material tank, many fine grains are cut out in the early stage, and many coarse grains are cut out in the latter stage.
このような粒度変化が生じる事情の下では、たとえ各銘
柄原料の成分に応して、それらの配合割合を、全焼結原
料において所定の成分量となるよう決定しても、目的の
成分量に調整することは無理である。Under circumstances where such changes in particle size occur, even if the blending ratio is determined according to the ingredients of each brand of raw material so that the amount of ingredients in all sintered raw materials is the specified amount, it will not be possible to reach the desired amount of ingredients. It is impossible to adjust.
本発明は、前記従来の問題点を解決し、焼結原料の成分
含有量の変動に迅速に対処でき、しかも成分含有量を正
確に制御でき、もって焼結鉱の品質安定に寄与するとこ
ろが大な焼結原料の配合方法を提供することにある。The present invention solves the above-mentioned conventional problems, can quickly cope with fluctuations in the component content of sintered raw materials, and can accurately control the component content, thereby greatly contributing to stabilizing the quality of sintered ore. The object of the present invention is to provide a method for blending raw materials for sintering.
本発明者は、前記問題点に鑑み、全〈従来と別の方向か
ら、焼結原料の配合を決めることができないかとの考え
の下に種々検8ζ1したところ、次の知見を得た6■
原料槽から切出される各銘柄ことの原#1の粒度変化は
、その原料の密度の変化としてあられれること。In view of the above-mentioned problems, the present inventor conducted various tests with the idea that it would be possible to determine the composition of sintering raw materials from a direction different from the conventional one, and obtained the following knowledge6.
The change in particle size of each brand of Kotonohara #1 cut out from the raw material tank can be seen as a change in the density of the raw material.
■ 原料槽から切出される各銘柄ごとの原料の粒度変化
は、その原料の成分量の変化としてあられれること。■ Changes in the particle size of each brand of raw material cut out from the raw material tank can be seen as changes in the amount of ingredients in that raw material.
(諭 したがって、原料槽から切出される原料の密度と
その成分量との間には、ある一定の相関関係があること
。(Satoru: Therefore, there is a certain correlation between the density of the raw material cut out from the raw material tank and the amount of its components.
■ よって、各銘柄原料ごとに、その密度と成分量どの
関係を事前にめておけば、当該銘柄原料の密度を実測す
ることによって、簡単にその時の成分量を予測できるこ
と。■ Therefore, by determining the relationship between the density and the amount of ingredients for each brand of raw material in advance, it is possible to easily predict the amount of ingredients at that time by actually measuring the density of that brand of raw material.
Φン 各銘柄原料ごとに予測した成分量を、それらの混
合割合を基にして焼結原料全体としてまとめると、焼結
原料全体としての成分量を推定できること。Φn By summarizing the component amounts predicted for each brand of raw material as a whole sintering raw material based on their mixing ratio, it is possible to estimate the component amount for the entire sintering raw material.
かかる知見を基礎とし、前記[]的を達成するための本
発明は、焼結原料の各銘柄について、これを貯留した各
原料槽からの単位時間当りのυJ出重重量すJ出体積と
から刻々の密度を算出し、前記各銘柄における密度と成
分含有量との予め既知の関係から、各銘柄ごとに前記q
出した密度に対応する成分含有量をめ、次いでこの各銘
柄ごとの成分含有量と焼結原料として配合される各銘柄
の配合割合とから焼結原料全体での成分<”iイ、、
j、、i、をめ、この焼結原料全体での成分含有量が目
標値になるよう各銘柄の配合割合を調整することを特徴
とするものである。Based on this knowledge, the present invention to achieve the above-mentioned object is based on the calculation of the weight of υJ output per unit time and the volume of υJ output per unit time for each brand of sintering raw material from each raw material tank in which it is stored. Calculate the density at each moment, and calculate the above q for each brand from the pre-known relationship between the density and component content for each brand.
Determine the component content corresponding to the obtained density, and then calculate the component of the entire sintering raw material from the component content for each brand and the blending ratio of each brand blended as a sintering raw material.
This method is characterized by adjusting the blending ratio of each brand so that the component content of the entire sintered raw material, including j, i, and the like, becomes a target value.
以下木発明を具体的に説明する。 The wood invention will be specifically explained below.
第1図は焼結原料の切出設備例の概略図で、焼結原料の
各銘柄についての原料槽IA〜IMがたとえば13基配
設され、それぞれモータ7駆動によるベルトフィーダ3
によって各原料が切出されるようになっている。FIG. 1 is a schematic diagram of an example of cutting equipment for sintering raw materials, in which, for example, 13 raw material tanks IA to IM are arranged for each brand of sintering raw materials, and each belt feeder 3 is driven by a motor 7.
Each raw material is cut out by
ジノ出された原料は、Jg原料槽貯鉱されている原料重
量および切出しゲート2高さの状態によって圧縮度が異
なるため、ベルトフィーダ3,4間で原料に加えられた
圧縮を開放させるために再び、ベルトフィーダ4に送ら
れる。The degree of compression of the discharged raw material differs depending on the weight of the raw material stored in the Jg raw material tank and the height of the cutting gate 2, so in order to release the compression applied to the raw material between the belt feeders 3 and 4. It is sent to the belt feeder 4 again.
モータ8駆動によるベルトフィーダ4では、送られてき
た原料が一定の重量を有する高さ調整装置5により、原
料量に対応した高さに調整される。この高さ調整装置の
角度と秤量機6の切出重量およびモータ7゜8の回転数
は切出制御器9に送られ、ここで高さ調整装置の角度は
原料高さに、モータ回転数は切出ベルトスピードに、切
出型H−は、秤量機6の切出重量から原料に加えられる
高さiA整装置の重量を引いた値に各々変換される。In the belt feeder 4 driven by a motor 8, the fed raw material is adjusted to a height corresponding to the amount of raw material by a height adjusting device 5 having a constant weight. The angle of the height adjustment device, the cutting weight of the weighing machine 6, and the rotation speed of the motor 7°8 are sent to the cutting controller 9, where the angle of the height adjustment device is adjusted to the raw material height and the rotation speed of the motor 7. is converted to the cutting belt speed, and the cutting type H- is converted to the value obtained by subtracting the weight of the height iA adjusting device added to the raw material from the cutting weight of the weighing machine 6.
この各原料槽に対応した切出制御器9は上位の主演算処
理装置lOと接続されている。11はCR7表示装置等
からなる外部入力装置である。The cutting controller 9 corresponding to each raw material tank is connected to the upper main processing unit IO. Reference numeral 11 denotes an external input device such as a CR7 display device.
かかる切出設備の下で、次のような焼結原料の配合方法
が採られる。(第3図演算処理フロー参照)■ すなわ
ち、まず、主演算処理装置10は、たとえば5分ピッチ
で各原料槽に対応するすJ小制御器9より、切出重量(
T/分)、切出しペルトスピー1”(m/分)、原料高
さくm)を人力する。一方、外部入力装置より必要詩人
力される各原料槽に対応するヘルトフィータ4上の原料
@(m)と上記入力値を元に、各銘柄の配合率(X)を
(1)式に、各銘柄の密度を(2)式に基づいて計算し
、現状配合率、現状密度を更新記憶する。Under such cutting equipment, the following method of blending sintering raw materials is adopted. (Refer to the calculation processing flow in Fig. 3.) In other words, first, the main processing unit 10 calculates the cutting weight (
T/min), cutting pelt speed 1'' (m/min), raw material height m) is manually performed.Meanwhile, the raw material on the Healto Feeder 4 corresponding to each raw material tank input by the external input device is input @(m). Based on the above input values, the blending ratio (X) of each brand is calculated based on equation (1), the density of each brand is calculated based on equation (2), and the current blending ratio and current density are updated and stored.
i銘柄の配合率(2)=
・・・・C1)
i銘柄の密1!!J (T/ rn’ )−i銘柄の切
出量÷(i銘柄の切出ヘルドスピード
幅)・・・・(2)
(ス) 各銘柄の前回アクション詩の密度が全てゼロの
場合(外部入力装置より配合変更指示のあった場合)、
各銘柄の現状密度を前回アクション時の音度に書きこん
で(最に移る。Mixing ratio of i brand (2) = ... C1) Secret 1 of i brand! ! J (T/rn') - Cutting amount of stock i ÷ (cutting held speed width of stock i)... (2) (S) If the density of the previous action poem of each stock is all zero (external When there is a recipe change instruction from the input device),
Write the current density of each stock in the tone of the previous action (move to the end).
(’3; 上記e)の条件以外の場合、(3)式を用い
て純原料中のJ成分(たとえばsro2, At2o3
等)の変化量を計算する。('3; For conditions other than e) above, use equation (3) to determine the J component (e.g. sro2, At2o3) in the pure raw material.
etc.) to calculate the amount of change.
純原料中のJ成分変化.ftL($)=’E” 〔i銘
柄の現状配合$/100 X( i銘柄の現状密度−皿
銘柄の前回アクショア時の密度〕×(i銘柄密度の変化
¥に対するJ成分変化量の割合)〕・・・・(3)
J成分変化量の割合は、ニューマンη、イjの例では、
第2図のような関係を予め知ることができる。そしてか
かる関係を各銘柄について予め知っておくことによって
、全ての銘柄の密度の変化量に対するJ成分の変化量を
知ることができる。Changes in J component in pure raw materials. ftL ($) = 'E'' [Current mix of i brand $/100 X (Current density of i brand - Density at the time of last acquisition of stock brand) x (Ratio of J component change amount to change in density of i brand ¥) ]...(3) In the example of Newman η, Ij, the rate of change in J component is
The relationship shown in FIG. 2 can be known in advance. By knowing this relationship in advance for each brand, it is possible to know the amount of change in the J component with respect to the amount of change in density of all brands.
I少 次いで(3)式に基づいて算出した純原料中のJ
成分変化量が予め設定しいる値、たとえばS + 0
2 の場合±0.10, A1203の場合±0.02
を超えているか否かを判定し、■成分でも超えているも
のがある場合は、予め設定しである配合率変更rjf能
銘柄を用いて各成分の変化量を極力最小にする配合率を
たとえばL/P手状を用いて計算し、これを現状配合率
とするとともに、各銘柄の現状密度を前回アクション時
の密度に書き込む。ここで、配合率変更nf能銘柄とし
ては、たとえば、S102の場合、Niスラグや砕砂等
が、A12o3の場合低AI203錆、石等がある。I small Next, J in the pure raw material calculated based on formula (3)
The amount of component change is a preset value, for example S + 0
2 ±0.10, A1203 ±0.02
Determine whether the amount of change in each component is exceeded, and if there is a component that exceeds the above, use a preset RJF performance brand to change the blending ratio to minimize the amount of change in each component, for example. Calculate using the L/P note, use this as the current blending ratio, and write the current density of each brand into the density at the time of the previous action. Here, as the nf performance grade for changing the blending ratio, for example, in the case of S102, there are Ni slag, crushed sand, etc., and in the case of A12o3, there are low AI203 rust, stone, etc.
(5) 各銘柄の現状配合率と外部入力装置より必要時
設:(I!されるbr!原ネ:1の給鉱f.la?(T
/H)(Wet)を用t,1 テ(4) 、(5)式に
ノ.(づいて各原料槽の切出量(T/H) (We t
ベース)を111算し、この値を各原料槽の切出量目標
値として対応する切出制御器に与え、切出重量が切出量
目標値になるように、モータ7、8の回転数を制御する
。(5) Current blending ratio of each brand and necessary setting from external input device: (I! br! Raw energy: 1 feed f.la? (T
/H) (Wet) using t,1 Te(4) and Equation (5). (Then, the cutout amount (T/H) of each raw material tank) (We t
Base) is calculated as 111, and this value is given to the corresponding cutting controller as the cutting amount target value of each raw material tank.The rotation speed of motors 7 and 8 is control.
口ry純原料給鉱目標(T/H) =
XWet純原料の飴原料標(T/H) ÷too −
− ・(4)各原料槽の切出量(T/i+) (We
t) =(Φ 外部入力装置より配合変更指示(各原料
槽の使用銘柄の変更又は配合率の変更)があった場合、
人力した各銘柄の配合率を現状配合率に書き込むととも
に、各銘柄の現状密度および前回アクション時の密度を
ゼロにして■に移る。Pure raw material supply target (T/H) = XWet pure raw material candy raw material target (T/H) ÷too −
- (4) Cutting amount of each raw material tank (T/i+) (We
t) = (Φ If there is a recipe change instruction from an external input device (change the brand used in each raw material tank or change the blending ratio),
Write the manually calculated blending ratio of each brand into the current blending ratio, set the current density of each brand and the density at the time of the previous action to zero, and move on to ■.
以上のような配合方法によると第1表に7にすように、
従来法と比較して、成分安定用アクション実施回数は増
加し、かつ成品成分および品質のバラツキが減少するこ
とが明らかとなった。According to the above blending method, as shown in 7 in Table 1,
Compared to the conventional method, it was revealed that the number of times the action for stabilizing the ingredients was performed was increased, and the variation in product ingredients and quality was reduced.
第1表
〔発明の効果〕
以上の通り、本発明によれば、焼結原料の成分含有量の
変動に迅速に対処でき、しかも成分含有量を正確に制御
でき、もって焼結原料の品質安定を確実に達成できる。Table 1 [Effects of the Invention] As described above, according to the present invention, it is possible to quickly deal with fluctuations in the component content of the sintering raw material, and moreover, it is possible to accurately control the component content, thereby stabilizing the quality of the sintering raw material. can be achieved with certainty.
第1図は本発明法を実施するだめの切出設備例を示す概
略図、第2図はニューマン鉱石の場合における密度−成
分関係図、第3図は演算処理フローシートである。
IA、IM ・・原ネ31槽 2・・切出しゲート3.
4・・ペルー・フィーダ 5争・高さ調整装置6・・秤
量機 7,8・・モータ 9・・切出制御器 lO・・
主演算処理装置 +1・・外部人力装置
特許出願人 住友金属丁業株式会社
代理人弁理士 永 井 義 久′ 。FIG. 1 is a schematic diagram showing an example of cutting equipment for carrying out the method of the present invention, FIG. 2 is a density-component relationship diagram in the case of Newman ore, and FIG. 3 is a calculation processing flow sheet. IA, IM... 31 tanks of raw energy 2... Cutting gate 3.
4. Peru feeder 5. Height adjustment device 6.. Weighing machine 7, 8.. Motor 9.. Cutting controller 1O..
Main processing unit +1...External human power device Patent applicant Yoshihisa Nagai, patent attorney for Sumitomo Metal Industry Co., Ltd.
Claims (1)
!i!: $14(’l+からのC1i位時間当りの切
出型、+41と切出体積とから、i(+1々の′に度を
算出し、前記各銘柄における密度と成分含有量との予め
既知の関係から゛、各銘柄ごとに前記算出した密度に対
応する成分含有量をめ、次いでこの名銘柄ごとの成分含
有量と焼結原料として配合される各銘柄の配合割合とか
ら焼結原料全体での成分含有6>をめ、この焼結原料全
体での成分含有量が目標値になるよう各銘柄の配合割合
を調整することを特徴とする焼結原料の配合方法。(1) For each brand of sintering raw material, each stored 1
! i! : $14 (C1i cutting type per hour from 'l+, +41 and cutting volume, i(+1' of each ') is calculated, and the density and component content of each brand are known in advance. From the relationship, ゛, calculate the component content corresponding to the density calculated above for each brand, and then calculate the entire sintering raw material from the component content of each famous brand and the blending ratio of each brand to be mixed as the sintering raw material. A method for blending sintered raw materials, characterized in that the blending ratio of each brand is adjusted so that the component content of the entire sintered raw material becomes a target value.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18861283A JPS6082623A (en) | 1983-10-07 | 1983-10-07 | Blending process for raw material for sintering |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18861283A JPS6082623A (en) | 1983-10-07 | 1983-10-07 | Blending process for raw material for sintering |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6082623A true JPS6082623A (en) | 1985-05-10 |
Family
ID=16226720
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18861283A Pending JPS6082623A (en) | 1983-10-07 | 1983-10-07 | Blending process for raw material for sintering |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6082623A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102517440A (en) * | 2011-12-31 | 2012-06-27 | 中冶长天国际工程有限责任公司 | Method and device for adjusting proportions of sintering raw materials |
-
1983
- 1983-10-07 JP JP18861283A patent/JPS6082623A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102517440A (en) * | 2011-12-31 | 2012-06-27 | 中冶长天国际工程有限责任公司 | Method and device for adjusting proportions of sintering raw materials |
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