JPH08333614A - Refining dust in converter using zinc-containing material and control method of zinc concentration in molten iron - Google Patents
Refining dust in converter using zinc-containing material and control method of zinc concentration in molten ironInfo
- Publication number
- JPH08333614A JPH08333614A JP16157295A JP16157295A JPH08333614A JP H08333614 A JPH08333614 A JP H08333614A JP 16157295 A JP16157295 A JP 16157295A JP 16157295 A JP16157295 A JP 16157295A JP H08333614 A JPH08333614 A JP H08333614A
- Authority
- JP
- Japan
- Prior art keywords
- converter
- concentration
- molten iron
- blowing
- concn
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、Ｚｎ含有物質を用いる
転炉での精錬ダストおよび溶鉄中のＺｎ濃度の制御方法
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling Zn concentration in refining dust and molten iron in a converter using a Zn-containing substance.
【０００２】[0002]
【従来の技術】従来、転炉でのＺｎ含有廃棄物からＺｎ
を回収する方法としては、例えば、特開昭６３−６２８
１３号に開示されているような、密閉容器状の転炉内に
スクラップと共にＺｎ含有廃棄物を投入し、そこに転炉
上端の開口部より取鍋などから溶鉄を投入して、溶鉄投
入によるスクラップの溶解および吹錬期間の初期の内少
なくともスクラップ溶解時において、発生して転炉口か
ら吹き上げられるＺｎ蒸気を捕捉用フードで捕捉し、フ
ィルター等を介してＺｎ分を確実に回収する方法があ
る。2. Description of the Related Art Conventionally, Zn-containing waste in a converter
As a method for recovering the above, for example, JP-A-63-628
As disclosed in No. 13, Zn-containing waste is put together with scrap into a converter in the form of a closed container, and molten iron is put into it from the opening at the upper end of the converter, and then molten iron is put in. There is a method of capturing Zn vapor generated and blown up from the converter port by a capturing hood at least during the initial stage of scrap melting and blowing and at the time of scrap melting, and surely recovering Zn content through a filter or the like. is there.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記の
ような従来のＺｎ回収方法は、ＺｎをＺｎ蒸気として捕
捉回収することのみを主眼とするもので、精錬ダストお
よび溶鉄中のＺｎ濃度を調整することは考慮されておら
ず、精錬ダストおよび溶鉄中のＺｎ濃度を目標濃度まで
達成させるのに必要なＺｎ含有スクラップおよびダスト
量を決定づけるという、定量的な制御についての考慮が
されていないという問題がある。However, the conventional Zn recovery method as described above is mainly aimed at capturing and recovering Zn as Zn vapor, and the Zn concentration in the refining dust and the molten iron is adjusted. However, there is no consideration for quantitative control, that is, determining the amount of Zn-containing scrap and dust necessary for achieving the Zn concentration in the smelting dust and molten iron up to the target concentration. is there.
【０００４】そのため、従来の工程で転炉内にＺｎ含有
スクラップを使用する際には、シュレッダー等の機械
的、熱的、化学的Ｚｎ除去方法を行う工程が必要であ
り、大きな設備投資とランニングコストを発生させてい
るという問題がある。Therefore, when the Zn-containing scrap is used in the converter in the conventional process, it is necessary to perform a mechanical, thermal, and chemical Zn removal method such as a shredder, which requires a large capital investment and running. There is a problem that it causes costs.
【０００５】そこで、本発明の目的は、Ｚｎ含有物質を
用いて転炉吹錬を行うにあたり、大きな設備投資および
ランニングコストを生じさせないように、転炉吹錬方法
を調節することによって発生する精錬ダストおよび溶鉄
中のＺｎ濃度を制御できるＺｎ含有物質を用いる転炉で
の精錬ダストおよび溶鉄中のＺｎ濃度の制御方法を提供
することにある。Therefore, an object of the present invention is to perform refining by adjusting the blowing method of the converter so as not to cause a large capital investment and running cost when performing the blowing of the converter using the Zn-containing substance. It is an object of the present invention to provide a method for controlling Zn concentration in refining dust and molten iron in a converter using a Zn-containing substance capable of controlling Zn concentration in dust and molten iron.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、請求項１に示した本発明は、転炉への装入量が全転
炉装入量の４０重量％以下となるようにＺｎ含有物質を
用いて行う転炉吹錬において、使用するＺｎ含有物質よ
り供給されるＺｎ濃度、上底吹き攪拌力および吹錬時間
による転炉吹錬方法を調節して転炉吹錬中に発生する精
錬ダスト中のＺｎ濃度を０．１〜７０重量％および溶鉄
中のＺｎ濃度を０．０００１〜０．０１重量％まで調整
することを特徴としている。In order to achieve the above object, the present invention as set forth in claim 1 is such that the amount of Zn charged in the converter is 40% by weight or less of the total amount of the converter. In the converter blowing that uses the contained substance, it is generated during the converter blowing by adjusting the converter blowing method according to the Zn concentration supplied from the Zn-containing substance used, the top and bottom blowing stirring force and the blowing time. The Zn concentration in the smelting dust is adjusted to 0.1 to 70% by weight and the Zn concentration in molten iron to 0.0001 to 0.01% by weight.
【０００７】更に、請求項２に示した本発明は、回収し
た精錬ダストを再利用することを特徴としている。Further, the present invention as set forth in claim 2 is characterized in that the recovered refined dust is reused.
【０００８】更に、請求項３に示した本発明は、溶鉄中
に残留するＺｎ濃度および発生する精錬ダスト中のＺｎ
濃度が所定値となるようにＺｎ含有物質の転炉への装入
量を調節することを特徴としている。Further, according to the present invention as set forth in claim 3, the concentration of Zn remaining in the molten iron and the Zn in the refining dust generated are
It is characterized in that the amount of the Zn-containing substance charged into the converter is adjusted so that the concentration becomes a predetermined value.
【０００９】[0009]
【作用】請求項１に示した本発明によれば、転炉吹錬で
Ｚｎ含有物質を全転炉装入量の４０重量％以下になるよ
うに用いて、Ｚｎ含有物質から供給するＺｎ濃度、上底
吹き攪拌力および吹錬時間による転炉吹錬方法を調節し
て、精錬ダスト中のＺｎ濃度を０．１〜７０重量％、溶
鉄中のＺｎ濃度を０．０００１〜０．０１重量％まで調
整するので、転炉での精錬ダストのＺｎ濃度を０．１〜
７０重量％まで、および溶鉄中のＺｎ濃度を０．０００
１〜０．０１重量％までの間で精度良く目標値に制御す
ることができる。According to the present invention as set forth in claim 1, the Zn concentration supplied from the Zn-containing substance is used by using the Zn-containing substance in the converter blowing so as to be 40% by weight or less of the total amount of the converter charged. Adjusting the converter blowing method by the upper and lower blowing stirring force and blowing time, the Zn concentration in the refining dust is 0.1 to 70% by weight, and the Zn concentration in the molten iron is 0.0001 to 0.01% by weight. %, So the Zn concentration in the smelting dust in the converter is 0.1 to 0.1%.
Zn concentration in molten iron up to 70% by weight and 0.000
It is possible to accurately control the target value in the range of 1 to 0.01% by weight.
【００１０】請求項２に示した本発明によれば、転炉吹
錬で発生した精錬ダストを回収し再利用するようにした
ので、回収したＺｎ含有量の明らかな精錬ダストをＺｎ
含有物質として再利用することにより、精錬ダストおよ
び溶鉄中のＺｎ濃度の制御が容易になり、更に高濃度に
精錬ダストの含有Ｚｎを濃縮回収することができる。According to the present invention as set forth in claim 2, since the refined dust generated in the converter blowing is collected and reused, the recovered refined dust having a clear Zn content is Zn.
By reusing as a contained substance, the Zn concentration in the smelting dust and the molten iron can be easily controlled, and the Zn contained in the smelting dust can be concentrated and recovered to a higher concentration.
【００１１】請求項３に示した本発明によれば、転炉で
の精錬ダストおよび溶鉄中のＺｎ濃度が所定値になるよ
うＺｎ含有物質の装入量によって調節するようにしたの
で、鋼材に要求されるＺｎ濃度レベル以下にするための
溶鋼中のＺｎ濃度をＺｎ含有物質の装入量調節によって
制御することができる。According to the present invention as set forth in claim 3, since the Zn concentration in the refining dust and molten iron in the converter is adjusted to a predetermined value by adjusting the amount of the Zn-containing substance charged, a steel material is obtained. It is possible to control the Zn concentration in the molten steel in order to make the Zn concentration level below the required level by adjusting the amount of the Zn-containing substance charged.
【００１２】[0012]
【実施例】Ｚｎ含有物質を転炉に装入すると、Ｚｎ含有
物質のＺｎ分が一旦溶鉄中に溶解し、転炉吹錬により１
６００℃以上にまで昇温されることによって、金属Ｚｎ
の沸点が９００℃であることから溶鉄中に溶解したＺｎ
分は連続的にＺｎ蒸気として蒸発し、転炉吹錬時間の経
過につれて溶鉄中のＺｎ濃度も連続的に減少し、転炉吹
錬の停止時の溶鉄中に残留するＺｎ量も変化する。[Example] When a Zn-containing substance was charged into a converter, the Zn content of the Zn-containing substance was once dissolved in molten iron, and 1
By raising the temperature to 600 ° C. or higher, Zn
Since the boiling point of Zn is 900 ° C, Zn dissolved in molten iron
The components continuously evaporate as Zn vapor, the Zn concentration in the molten iron continuously decreases with the passage of the converter blowing time, and the amount of Zn remaining in the molten iron when the converter blowing stops is also changed.
【００１３】また、溶鉄中のＺｎ分の蒸発速度は転炉内
の溶鉄中に溶解させたＺｎ濃度と、転炉吹錬時の攪拌強
度に依存する。更に、転炉口より蒸発するＺｎ分のほぼ
全量が捕捉回収される精錬ダスト中へ移行する。従っ
て、本実施例は、使用するＺｎ含有物質から供給される
Ｚｎ濃度、上底吹き攪拌力および吹錬時間による転炉吹
錬方法を調節することにより、転炉吹錬中に発生する精
錬ダスト中のＺｎ濃度および溶鉄中のＺｎ濃度を精度良
く調整するものである。The evaporation rate of Zn in the molten iron depends on the concentration of Zn dissolved in the molten iron in the converter and the stirring strength during the blowing of the converter. Furthermore, almost all of the Zn content evaporated from the converter port is transferred to the refining dust that is captured and recovered. Therefore, in this example, the refining dust generated during the converter blowing was adjusted by adjusting the Zn concentration supplied from the Zn-containing substance used, the top-bottom blowing stirring force, and the blowing time of the converter. The Zn concentration in the molten iron and the Zn concentration in the molten iron are accurately adjusted.
【００１４】つぎに実際に行った実施条件による実施例
について説明する。Next, a description will be given of an example according to the actual execution conditions.
【００１５】第１実施例として、ＣＯ2ガスの底吹き設
備を有する２５０トン上底吹き転炉において、Ｚｎ含有
物質として、下の表１に示すようなＺｎ濃度が既知で且
つそれぞれ異なるＺｎ含有スクラップ（試験Ｎｏ．１，
２，３，４相当）を全装入量の４０重量％以下の制限内
で装入し、転炉吹錬を実施した。また、その際に、従来
使用されるスクラップ比率が２０％となる。全装入スク
ラップ量が６０トンとなるようにＺｎを含有しないスク
ラップを加えることとし、溶鉄への攪拌については、上
吹き送酸速度、メインランス高さおよび底吹き攪拌力が
一定の条件で実施した。As a first embodiment, in a 250 ton top-bottom blowing converter having a CO 2 gas bottom-blowing facility, Zn-containing substances having different Zn concentrations as shown in Table 1 below are contained as Zn-containing substances. Scrap (Test No. 1,
2, 3, 4) was charged within the limit of 40% by weight or less of the total charging amount, and the converter was blown. In addition, at that time, the scrap ratio used conventionally becomes 20%. Scrap not containing Zn was added so that the total amount of charged scrap would be 60 tons. The stirring of molten iron was performed under the conditions that the top-blown acid flow rate, main lance height, and bottom-blown stirring force were constant. did.
【００１６】[0016]
【表１】 図１は本発明の第１実施例に係る吹錬時間に対する溶鉄
中のＺｎ濃度の変化を示す図である。[Table 1] FIG. 1 is a diagram showing a change in Zn concentration in molten iron with respect to a blowing time according to a first embodiment of the present invention.
【００１７】図１は表１に示した実施条件での吹錬時間
（横軸）と、溶鉄中のＺｎ濃度（縦軸）の変化の様子を
示したものであり、吹錬中に多数回溶鉄成分を採取した
結果をプロットし、傾向を実線および破線で示した。そ
の溶鉄中Ｚｎ濃度は吹錬の進行に伴って吹錬時間の経過
と共に減少するが、同一吹錬時間における溶鉄中のＺｎ
濃度は供給したＺｎ量、つまり転炉に装入したＺｎ含有
物質中のＺｎ量に依存することが分かる。従って、Ｚｎ
含有スクラップおよび精錬ダストから転炉へ供給される
Ｚｎ量および転炉吹錬時間を調節することにより、例え
ば、０．０００１〜０．０１重量％までは溶鉄中のＺｎ
濃度を精度良く調整することが可能となる。FIG. 1 shows changes in the blowing time (horizontal axis) and the Zn concentration in the molten iron (vertical axis) under the operating conditions shown in Table 1, which were repeated many times during blowing. The results of collecting the molten iron components were plotted, and the trends are shown by the solid line and the broken line. The Zn concentration in the molten iron decreases with the progress of the blowing time as the blowing progresses.
It can be seen that the concentration depends on the amount of Zn supplied, that is, the amount of Zn in the Zn-containing substance charged into the converter. Therefore, Zn
By adjusting the amount of Zn supplied from the contained scrap and the refining dust to the converter and the blowing time of the converter, for example, 0.0001 to 0.01% by weight of Zn in molten iron
It is possible to adjust the density with high accuracy.
【００１８】また、この際に蒸発して減少したＺｎ分は
ほぼ全量が精錬ダスト中に濃化することから、例えば、
０．１〜７０重量％までは精錬ダスト中のＺｎ濃度も同
時に精度良く調整することが可能になる。Further, since the Zn content evaporated and reduced at this time is concentrated in almost all the refining dust, for example,
From 0.1 to 70% by weight, the Zn concentration in the smelting dust can be adjusted at the same time with high precision.
【００１９】次に第２実施例について説明する。Next, a second embodiment will be described.
【００２０】第２実施例として、同じＣＯ2ガスの底吹
き設備を有する２５０トン上底吹き転炉において、Ｚｎ
含有物質として、下の表２に示すような既知で同じＺｎ
濃度（１．６％）のＺｎ含有スクラップをそれぞれ同量
（各々３０トン）転炉に装入し、吹錬中の底吹きＣＯ2
ガス流量を変化させることによって、溶鉄への攪拌力を
変えて転炉吹錬を実施した。As a second embodiment, in a 250 ton top-bottom blowing converter having the same CO 2 gas bottom-blowing equipment, Zn
As the contained substances, known and same Zn as shown in Table 2 below
The same amount (30 tons each) of Zn-containing scrap with a concentration (1.6%) was loaded into the converter, and bottom-blown CO 2 was blown during blowing.
By changing the gas flow rate, the stirring force for molten iron was changed and the converter blowing was carried out.
【００２１】図２は本発明の第２実施例に係る攪拌力に
対する溶鉄中のＺｎ濃度の変化を示す図である。FIG. 2 is a graph showing changes in Zn concentration in molten iron with stirring force according to the second embodiment of the present invention.
【００２２】図２は表２に示した実施条件により溶鉄へ
の攪拌力を変えた場合の、吹錬時間（横軸）に対する溶
鉄中のＺｎ濃度（縦軸）の変化の様子を示したものであ
り、溶鉄中Ｚｎ濃度の減少速度は、表２の試験Ｎｏ．
７，Ｎｏ．６，Ｎｏ．５の順に攪拌力が大きくなるにつ
れて速くなる。FIG. 2 shows changes in the Zn concentration (vertical axis) in molten iron with respect to the blowing time (horizontal axis) when the stirring force for molten iron was changed under the operating conditions shown in Table 2. The decrease rate of the Zn concentration in the molten iron is as shown in test No. 2 in Table 2.
7, No. 6, No. It becomes faster as the stirring force increases in the order of 5.
【００２３】このように、溶鉄に与える攪拌力を調節す
ることによっても前実施例と同様、溶鉄中のＺｎ濃度を
精度良く制御することが可能になる。また、この際に蒸
発して減少したＺｎ分はほぼ全量が精錬ダスト中に濃化
するため、精錬ダスト中のＺｎ濃度も同時に精度良く調
整することができる。As described above, by adjusting the stirring force applied to the molten iron, it becomes possible to control the Zn concentration in the molten iron with high precision as in the previous embodiment. Further, since the Zn content evaporated and reduced at this time is concentrated in the refining dust almost entirely, the Zn concentration in the refining dust can be adjusted at the same time with high accuracy.
【００２４】このように、本発明では、溶鉄中のＺｎ濃
度、精錬ダスト中のＺｎ濃度を精度良く制御することが
可能となったので、再利用するために目的とするＺｎ濃
度まで精錬ダストのＺｎ濃度を濃縮するのに要する、Ｚ
ｎ含有物質の装入量も正確に決定して制御することが可
能になった。As described above, according to the present invention, the Zn concentration in the molten iron and the Zn concentration in the smelting dust can be accurately controlled, so that the Zn concentration in the smelting dust can be reused up to the intended Zn concentration for reuse. Z required to concentrate Zn concentration
It has become possible to accurately determine and control the charging amount of the n-containing substance.
【００２５】[0025]
【表２】 [Table 2]
【００２６】[0026]
【発明の効果】以上、説明したように、請求項１に示し
た本発明によれば、Ｚｎ含有物質を用いて転炉吹錬を行
うにあたり、Ｚｎ含有物質より供給されるＺｎ濃度、上
底吹き攪拌力および吹錬時間の転炉吹錬方法を調節し
て、発生する精錬ダスト中のＺｎ濃度を０．１〜７０重
量％、溶鉄中のＺｎ濃度を０．０００１〜０．０１重量
％まで調整するので、転炉吹錬中に発生する精錬ダスト
中のＺｎ濃度および溶鉄中のＺｎ濃度を精度良く制御す
ることが可能になり、従来実施していたＺｎ含有スクラ
ップへのシュレッダー等の機械的、熱的あるいは化学的
なＺｎ除去工程を削減でき、精錬コストの大幅な低減を
図ることが可能となる。As described above, according to the present invention as set forth in claim 1, in performing the converter blowing using the Zn-containing substance, the Zn concentration supplied from the Zn-containing substance and the upper bottom By adjusting the blower stirring method of blowing stirring power and blowing time, the Zn concentration in the generated refining dust is 0.1 to 70% by weight, and the Zn concentration in the molten iron is 0.0001 to 0.01% by weight. It is possible to accurately control the Zn concentration in the smelting dust and the Zn concentration in the molten iron generated during the blowing of the converter. It is possible to reduce the physical, thermal or chemical Zn removal step, and to significantly reduce the refining cost.
【００２７】更に、請求項２に示した本発明によれば、
回収した精錬ダストを再利用できるようにしたので、Ｚ
ｎを再利用するＺｎ濃度まで濃縮回収するために必要な
Ｚｎ含有物質の装入量が決定でき、従来Ｚｎを再利用で
きる濃度まで濃縮できなかった時に行ってきた産業廃棄
物としての投棄量を削減することができる。Further, according to the present invention as set forth in claim 2,
Since the recovered smelting dust can be reused, Z
The amount of Zn-containing substance required to concentrate and recover the concentration of Zn to be reused can be determined, and the amount of industrial waste that was discarded when the concentration of Zn could not be concentrated to the level where it can be reused in the past was used. Can be reduced.
【００２８】更に、請求項３に示した本発明によれば、
溶鉄中のＺｎ濃度と精錬ダスト中のＺｎ濃度が所定値に
なるようにＺｎ含有物質の装入量を調節できるようにし
たので、鋼材の品質へ影響を与えないＺｎ濃度レベルを
確保するための溶鋼中のＺｎ濃度を制御することが可能
になり、精錬工程における設備投資およびランニングコ
ストの低減を図ることができる。Further, according to the present invention as set forth in claim 3,
Since the amount of the Zn-containing substance to be charged can be adjusted so that the Zn concentration in the molten iron and the Zn concentration in the refining dust have predetermined values, it is possible to secure a Zn concentration level that does not affect the quality of the steel material. It becomes possible to control the Zn concentration in the molten steel, and it is possible to reduce capital investment and running costs in the refining process.
【図１】本発明の第１実施例に係る吹錬時間に対する溶
鉄中のＺｎ濃度の変化を示す図である。FIG. 1 is a diagram showing a change in Zn concentration in molten iron with respect to a blowing time according to a first example of the present invention.
【図２】本発明の第２実施例に係る攪拌力に対する溶鉄
中のＺｎ濃度の変化を示す図である。FIG. 2 is a diagram showing changes in Zn concentration in molten iron with stirring force according to a second example of the present invention.
１〜７ 試験Ｎｏ． 1 to 7 Test No.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山本 誠司 君津市君津１番地 新日本製鐵株式会社君 津製鐵所内 (72)発明者 原島 和海 君津市君津１番地 新日本製鐵株式会社君 津製鐵所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Seiji Yamamoto 1 Kimitsu, Kimitsu-shi Kimitsu Nippon Steel Co., Ltd. Kimitsu Steel Works (72) Inventor, Harumi Wakai Kimitsu, Kimitsu City 1 Nippon Steel Co., Ltd. Tsu Steel Works
Claims (3)
量％以下となるようにＺｎ含有物質を用いて行う転炉吹
錬において、使用するＺｎ含有物質より供給されるＺｎ
濃度、上底吹き攪拌力および吹錬時間による転炉吹錬方
法を調節して転炉吹錬中に発生する精錬ダスト中のＺｎ
濃度を０．１〜７０重量％および溶鉄中のＺｎ濃度を
０．０００１〜０．０１重量％まで調整することを特徴
とするＺｎ含有物質を用いる転炉での精錬ダストおよび
溶鉄中のＺｎ濃度の制御方法。1. In a converter blowing process using a Zn-containing substance such that the amount charged into the converter is 40% by weight or less based on the total amount of the converter, it is supplied from the Zn-containing substance used. Zn
Zn in smelting dust generated during converter blowing by adjusting the converter blowing method by concentration, top and bottom blowing stirring force and blowing time
Zn concentration in molten iron and molten iron in a converter using Zn-containing substance, characterized by adjusting the concentration of 0.1 to 70% by weight and the concentration of Zn in molten iron to 0.0001 to 0.01% by weight Control method.
炉での精錬ダストおよび溶鉄中のＺｎ濃度の制御方法に
おいて、回収した精錬ダストを再利用することを特徴と
するＺｎ含有物質を用いる転炉での精錬ダストおよび溶
鉄中のＺｎ濃度の制御方法。2. A method for controlling Zn concentration in refining dust and molten iron in a converter using the Zn-containing substance according to claim 1, wherein the recovered refining dust is reused. A method for controlling Zn concentration in refining dust and molten iron in a converter.
炉での精錬ダストおよび溶鉄中のＺｎ濃度の制御方法に
おいて、溶鉄中に残留するＺｎ濃度および発生する精錬
ダスト中のＺｎ濃度が所定値となるようにＺｎ含有物質
の転炉への装入量を調節することを特徴とするＺｎ含有
物質を用いる転炉での精錬ダストおよび溶鉄中のＺｎ濃
度の制御方法。3. A method for controlling Zn concentration in refining dust and molten iron in a converter using the Zn-containing substance according to claim 1, wherein the Zn concentration remaining in the molten iron and the Zn concentration in the generated refining dust are predetermined. A method for controlling Zn concentration in refining dust and molten iron in a converter using a Zn-containing substance, characterized in that the amount of the Zn-containing substance charged into the converter is adjusted to be a value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16157295A JPH08333614A (en) | 1995-06-06 | 1995-06-06 | Refining dust in converter using zinc-containing material and control method of zinc concentration in molten iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16157295A JPH08333614A (en) | 1995-06-06 | 1995-06-06 | Refining dust in converter using zinc-containing material and control method of zinc concentration in molten iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08333614A true JPH08333614A (en) | 1996-12-17 |
Family
ID=15737668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16157295A Pending JPH08333614A (en) | 1995-06-06 | 1995-06-06 | Refining dust in converter using zinc-containing material and control method of zinc concentration in molten iron |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08333614A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013010974A (en) * | 2011-06-28 | 2013-01-17 | Jfe Steel Corp | Method for collecting converter dust |
| JP2013237902A (en) * | 2012-05-15 | 2013-11-28 | Kobe Steel Ltd | Dust recycle method |
| JP2013253274A (en) * | 2012-06-05 | 2013-12-19 | Kobe Steel Ltd | Dust recycle method |
-
1995
- 1995-06-06 JP JP16157295A patent/JPH08333614A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013010974A (en) * | 2011-06-28 | 2013-01-17 | Jfe Steel Corp | Method for collecting converter dust |
| JP2013237902A (en) * | 2012-05-15 | 2013-11-28 | Kobe Steel Ltd | Dust recycle method |
| JP2013253274A (en) * | 2012-06-05 | 2013-12-19 | Kobe Steel Ltd | Dust recycle method |
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