JPH11193409A - Method for simultaneously manufacturing reduced metal and clean fuel gas - Google Patents
Method for simultaneously manufacturing reduced metal and clean fuel gasInfo
- Publication number
- JPH11193409A JPH11193409A JP36772497A JP36772497A JPH11193409A JP H11193409 A JPH11193409 A JP H11193409A JP 36772497 A JP36772497 A JP 36772497A JP 36772497 A JP36772497 A JP 36772497A JP H11193409 A JPH11193409 A JP H11193409A
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- furnace
- fuel gas
- clean fuel
- coke
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000002737 fuel gas Substances 0.000 title claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 12
- 239000002184 metal Substances 0.000 title claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 title abstract description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 28
- 239000011593 sulfur Substances 0.000 claims abstract description 28
- 239000000571 coke Substances 0.000 claims abstract description 25
- 239000002893 slag Substances 0.000 claims abstract description 25
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 21
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 20
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 7
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 7
- 239000004571 lime Substances 0.000 claims abstract description 7
- 238000002844 melting Methods 0.000 claims abstract 3
- 230000008018 melting Effects 0.000 claims abstract 3
- 239000002994 raw material Substances 0.000 claims description 36
- 238000003723 Smelting Methods 0.000 claims description 21
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 13
- 229910052760 oxygen Inorganic materials 0.000 claims description 13
- 239000001301 oxygen Substances 0.000 claims description 13
- 239000007789 gas Substances 0.000 abstract description 27
- 239000003245 coal Substances 0.000 abstract description 14
- 239000000428 dust Substances 0.000 abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 16
- 238000005245 sintering Methods 0.000 description 12
- 229910052742 iron Inorganic materials 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 229910000805 Pig iron Inorganic materials 0.000 description 4
- 238000006477 desulfuration reaction Methods 0.000 description 4
- 230000023556 desulfurization Effects 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000011269 tar Substances 0.000 description 2
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 229910052815 sulfur oxide Inorganic materials 0.000 description 1
- 239000002641 tar oil Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Manufacture Of Iron (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、鉄鉱石、酸化クロ
ム、マンガン鉱石等の酸化金属原料により還元金属とク
リーンな燃料ガスを同時に製造する方法に関する。The present invention relates to a method for simultaneously producing a reduced metal and a clean fuel gas from a metal oxide material such as iron ore, chromium oxide and manganese ore.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】従来技
術１ 現在製鉄法で最も普及している高炉においては、主に所
定の粒度に調整した焼結鉱をコークスとともに装入し、
溶融還元して、銑鉄を生産している。その前処理の焼結
設備においては、鉄鉱石、石灰石、コークス等の粉原料
を混合造粒した後に、焼結機で焼成して焼結鉱を製造し
ている。焼結温度は１２００から１４００℃であり、焼
結過程で鉄鉱石、石灰石及びコークスに含まれている硫
黄が燃焼し、硫黄酸化物が排ガス中に混入する。2. Description of the Related Art In a blast furnace, which is currently most widely used in the iron making method, sinter ore adjusted to a predetermined particle size is charged together with coke,
It produces pig iron by smelting and reducing. In the pretreatment sintering facility, powder or raw materials such as iron ore, limestone, coke and the like are mixed and granulated, and then sintered by a sintering machine to produce sintered ore. The sintering temperature is 1200 to 1400 ° C., and the sulfur contained in iron ore, limestone and coke burns during the sintering process, and sulfur oxides are mixed in the exhaust gas.
【０００３】図３は、１２０００ｔｏｎ／ｄａｙの生産
量をもつ焼結設備から排出されるガスの性状を示す図で
ある。１は焼結機であり、焼結機から発生する排ガス２
は電気集塵機１０１を通過し、排風機１０２によって煙
突１０３から排出される。焼結機排ガスには５０ｋｇ／
ｈのダスト及び１５０Ｎｍ3 ／ｈのＳＯX が含まれてい
る。一方、焼結された高温焼結鉱はクーラー３内を通過
させ、冷却用排風機３０１から送出された空気によって
冷却される。クーラー排ガス４にはＳＯX は含まれてい
ないが、３８０ｋｇ／ｈのダストが含まれている。FIG. 3 is a view showing the properties of gas discharged from a sintering facility having a production capacity of 12000 tons / day. Reference numeral 1 denotes a sintering machine, and exhaust gas 2 generated from the sintering machine
Passes through an electric dust collector 101 and is discharged from a chimney 103 by an exhaust fan 102. 50 kg /
h of dust and 150 Nm 3 / h of SO X. On the other hand, the sintered high-temperature sinter passes through the cooler 3 and is cooled by the air sent from the cooling air blower 301. The cooler exhaust gas 4 does not contain SO X but contains 380 kg / h of dust.
【０００４】しかしながら、硫黄分を含む鉄鉱石、コー
クス、石炭、重油及びタールを使用する場合には、排ガ
ス中の硫黄分を除去するために脱硫黄装置を設置しなけ
ればならず、多大の設備費用及び操業費用が掛かる。ま
た、焼結設備においては、過剰の空気を吸引して焼結を
行うために、排ガスは図３に示すように莫大な量とな
り、この排ガス中のダストを除去するために、大容量の
集塵設備、例えば電気集塵機を設置しなければならず、
同様に多くの設備費用や操業費用が掛かる。[0004] However, when iron ore, coke, coal, heavy oil and tar containing sulfur are used, desulfurization equipment must be installed in order to remove the sulfur in the exhaust gas. Costs and operating costs are incurred. Further, in the sintering equipment, since the sintering is performed by sucking excess air, the amount of exhaust gas becomes enormous as shown in FIG. 3, and a large volume of exhaust gas is removed to remove dust in the exhaust gas. Dust equipment, such as an electric dust collector, must be installed,
Similarly, a lot of equipment and operating costs are required.
【０００５】従来技術２ 高炉法に代わる製鉄法の１つとして、上吹酸素鉄浴方式
溶融還元法が提案されている。図４は、上吹酸素鉄浴方
式溶融還元炉の概略図である。予備還元炉６によって予
備還元された鉄鉱石は、コークスあるいは石炭、造滓剤
などの副原料とともに溶融還元炉５の上部から投入され
る。そして、酸素や諸ガスをランス５０１から吹き込
み、鉄鉱石を還元溶融する。Prior Art 2 As one of the iron making methods replacing the blast furnace method, a smelting reduction method using a top-blown oxygen iron bath has been proposed. FIG. 4 is a schematic view of a top-blown oxygen iron bath type smelting reduction furnace. The iron ore pre-reduced by the pre-reduction furnace 6 is fed from the upper part of the smelting reduction furnace 5 together with coke or auxiliary materials such as coal and slag forming agent. Then, oxygen and various gases are blown from the lance 501 to reduce and melt the iron ore.
【０００６】しかしながら、本従来技術２においては、
上吹酸素吹き込みであるため、炉内を一様に強還元雰囲
気に保つことができない。その結果として、排ガス中に
硫黄分の大部分が排出される。また、上吹酸素鉄浴方式
であるため、多量のダストが炉外に排出されるが、当該
ダストにも多量の硫黄分が含まれている。したがって、
炉外脱硫黄処理を設置する必要があり、そのための多く
の設備費用や操業費用が掛かる。However, in the prior art 2,
Since the oxygen is blown upward, the inside of the furnace cannot be uniformly maintained in a strong reducing atmosphere. As a result, most of the sulfur content is exhausted in the exhaust gas. In addition, because of the top-blown oxygen iron bath method, a large amount of dust is discharged outside the furnace, but the dust also contains a large amount of sulfur. Therefore,
It is necessary to install an out-of-pile desulfurization treatment, which requires a lot of equipment costs and operating costs.
【０００７】[0007]
【課題を解決するための手段】上記問題点は、請求項１
に記載の本発明に係る還元金属とクリーンな燃料ガスを
同時に製造する方法、すなわち、焼結鉱を主たる原料と
しない酸化金属原料を溶融還元する過程において、コー
クス充填層を用いて強還元雰囲気を作り、石灰系スラグ
原料を装入して塩基度１．０以上の溶融スラグを生成す
ることにより、溶融還元系内に流入した硫黄分を溶融ス
ラグ中に閉じこめることを特徴とする還元金属とクリー
ンな燃料ガスを同時に製造する方法によって、解決され
る。SUMMARY OF THE INVENTION The above problem is solved by claim 1.
A method for simultaneously producing a reduced metal and a clean fuel gas according to the present invention according to the present invention, that is, in the process of smelting and reducing a metal oxide raw material that does not use sinter as a main raw material, a strong reducing atmosphere using a coke packed bed. Reduction metal and clean, characterized in that the lime-based slag raw material is charged and molten slag with a basicity of 1.0 or more is generated to trap the sulfur content flowing into the smelting reduction system in the molten slag. The problem is solved by a method for simultaneously producing different fuel gases.
【０００８】[0008]
【作用】溶融スラグの塩基度（ＣａＯ／ＳｉＯ2 ）が
１．０以上になるように配合調整した石灰系スラグ原料
を装入することによって、硫黄分が高い酸化金属原料、
コークス、石炭、重油及びタールから生じる硫黄分を溶
融スラグ中に取り込み、封じ込めることができ、排ガス
中の硫黄分をほとんどなくすることができる。By charging a lime-based slag raw material blended and adjusted so that the basicity (CaO / SiO 2 ) of the molten slag is 1.0 or more, a metal oxide raw material having a high sulfur content can be obtained.
Sulfur generated from coke, coal, heavy oil and tar can be taken in and contained in the molten slag, and the sulfur content in exhaust gas can be almost eliminated.
【０００９】微粉炭と酸素または酸素富化空気を炉下部
からコークス充填層へ吹き込むことによって、炉内を一
様な強還元雰囲気に保つことができるとともに、 ２Ｃ＋Ｏ2 ＝２ＣＯ の反応熱で酸化金属原料を加熱、還元、溶融する。By blowing pulverized coal and oxygen or oxygen-enriched air from the lower part of the furnace into the coke packed bed, the furnace can be maintained in a uniform strong reducing atmosphere, and the metal oxide is heated by the reaction heat of 2C + O 2 = 2CO. The raw material is heated, reduced and melted.
【００１０】炉内充填層は下部で発生する高温の燃焼排
ガスによって予熱され、排ガスの顕熱は有効利用され
る。[0010] The packed bed in the furnace is preheated by the high temperature combustion exhaust gas generated in the lower part, and the sensible heat of the exhaust gas is used effectively.
【００１１】[0011]
【発明の実施の態様】以下、本発明の実施形態につい
て、添付図面を参照して、詳細に説明する。Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
【００１２】図１は、本発明の一実施形態の溶融還元炉
の概略図である。溶融還元炉７は直立円筒形であり、内
部に塊状のコークス、石灰系スラグ原料及び酸化金属原
料によって、コークス充填層が形成される。コークス充
填層によって、溶融還元炉７の内部には均一な強還元雰
囲気が生じる。本実施形態の溶融還元炉とは異なり、内
部にコークス充填層を形成できる構造であれば、例え
ば、キューポラ炉、電気炉または転炉等を使用しても本
発明を実施することができる。FIG. 1 is a schematic view of a smelting reduction furnace according to one embodiment of the present invention. The smelting reduction furnace 7 has an upright cylindrical shape, in which a coke packed bed is formed by massive coke, lime-based slag raw material, and metal oxide raw material. The coke packed bed creates a uniform strong reducing atmosphere inside the smelting reduction furnace 7. Unlike the smelting reduction furnace of the present embodiment, the present invention can be practiced using a cupola furnace, an electric furnace, a converter, or the like as long as a coke packed bed can be formed inside.
【００１３】炉項部には、酸化金属原料、コークス及び
スラグ原料の投入口７０１を有し、炉上部には排ガスの
排出口７０２を有し、炉下部には酸素または酸素富化空
気、微粉炭及び微粉酸化金属原料等の吹き込み孔７０３
を有し、さらに下方には銑鉄及びスラグの排出口７０４
が設けてある。The furnace section has an inlet 701 for a metal oxide raw material, coke and slag raw material, an exhaust gas outlet 702 at the upper part of the furnace, and oxygen or oxygen-enriched air, fine powder at the lower part of the furnace. Blow holes 703 for raw materials such as charcoal and fine metal oxide
, And further down there are outlets 704 for pig iron and slag.
Is provided.
【００１４】本実施形態の溶融還元炉に投入される酸化
金属原料は、硫黄分を含んだ鉱石、ペレット及び焼結鉱
など、塊状であればいかなる形態であっても良く、従来
のように焼結鉱あるいはペレットに限定されるものでは
ない。また金属スクラップも原料として用いることがで
きる。コークスは、酸化金属原料を還元するために必要
な最小限の量が投入される。The metal oxide raw material to be fed into the smelting reduction furnace of this embodiment may be in any form as long as it is lump, such as ore, pellets, and sintered ore containing sulfur. It is not limited to consolidation or pellets. Metal scrap can also be used as a raw material. Coke is charged in the minimum amount required to reduce the metal oxide raw material.
【００１５】このようにコークス充填層は、通気性を確
保するため、塊状の酸化金属原料、コークス及び石灰系
スラグ原料で構成されている。コークス充填層の通気性
を阻害する粉状の酸化金属原料、石灰系スラグ原料及び
石炭は、炉体の下方の側面あるいは底面から微粉状とし
て酸素または酸素富化空気とともに吹き込まれる。As described above, the coke-packed layer is composed of a massive metal oxide raw material, coke and a lime-based slag raw material in order to secure air permeability. The powdery metal oxide raw material, lime-based slag raw material, and coal that impair the air permeability of the coke packed bed are blown together with oxygen or oxygen-enriched air as fine powder from the lower side or bottom surface of the furnace body.
【００１６】吹き込まれた微粉炭及び炉頂より投入され
るコークスは、吹き込み孔近傍の領域で速やかに酸素に
よって燃焼反応し、酸化金属原料及び石炭から分離した
硫黄分は、その燃焼熱で生成した塩基度１．０以上の溶
融スラグに吸収される。また吹き込まれた酸化金属原料
及び炉頂から投入された酸化金属原料も同領域で燃焼熱
により溶融する。The injected pulverized coal and the coke introduced from the furnace top quickly undergo a combustion reaction with oxygen in the region near the injection hole, and the sulfur content separated from the metal oxide raw material and the coal is generated by the heat of combustion. It is absorbed by molten slag having a basicity of 1.0 or more. Also, the blown metal oxide raw material and the metal oxide raw material introduced from the furnace top are melted by the combustion heat in the same region.
【００１７】燃焼反応により発生した高温ガスがコーク
ス充填層を上昇する間に、ガス中の一酸化炭素及び水素
は、コークス充填層中の酸化金属原料を還元し、高温ガ
スの顕熱はコークス充填層を予熱する。またガス中のダ
ストはコークス充填層にてほとんどのものが捕集され
る。While the high-temperature gas generated by the combustion reaction rises in the coke packed bed, carbon monoxide and hydrogen in the gas reduce the metal oxide raw material in the coke packed bed, and the sensible heat of the high-temperature gas is reduced by the coke packed bed. Preheat layer. Most of the dust in the gas is collected in the coke packed bed.
【００１８】このように硫黄分は溶融スラグ中に取り込
まれ除去されるので、炉上部の排出口から排出される排
ガス中には硫黄分がほとんど無く、ダストの少ないクリ
ーンな一酸化炭素及び水素を主体とする燃料ガスが排出
される。また、高硫黄含有燃料の灰分（例えばバナジウ
ム等）も溶融スラグ中に捕集される。なお、溶融スラグ
及び銑鉄への硫黄分の捕捉率は９９％以上であった。As described above, the sulfur content is taken in and removed from the molten slag, so that the exhaust gas discharged from the outlet at the upper part of the furnace has almost no sulfur content and clean carbon monoxide and hydrogen with little dust. The main fuel gas is discharged. In addition, ash (eg, vanadium) of the high sulfur content fuel is also collected in the molten slag. In addition, the capture rate of the sulfur content in the molten slag and pig iron was 99% or more.
【００１９】図２は、本発明の溶融還元法によって得ら
れた清浄な燃料ガスを用いて発電した場合と通常の石炭
発電の場合の原料投入量、発生電力量及び硫黄分排出量
を比較した図である。本発明の溶融還元法によって得ら
れる排ガス（燃料ガス）中の硫黄分は１ｐｐｍ以下と極
めて少ないことがわかる。FIG. 2 shows a comparison between the amount of raw material input, the amount of generated power and the amount of sulfur discharged between the case where power is generated using the clean fuel gas obtained by the smelting reduction method of the present invention and the case of ordinary coal power generation. FIG. It can be seen that the sulfur content in the exhaust gas (fuel gas) obtained by the smelting reduction method of the present invention is extremely low at 1 ppm or less.
【００２０】[0020]
【発明の効果】本発明の還元金属とクリーンな燃料ガス
を同時に製造する方法によれば、酸化金属原料や石炭中
の硫黄分を溶融スラグに取り込み、封じ込めるので、排
ガス中の硫黄分をほとんど無くすることができ、脱硫装
置を設置することなしに、一酸化炭素及び水素を含むク
リーンな燃料ガスを得ることができる。According to the method of the present invention for simultaneously producing a reduced metal and a clean fuel gas, the sulfur content in the metal oxide raw material and the coal is taken into the molten slag and confined, so that the sulfur content in the exhaust gas is almost eliminated. Thus, a clean fuel gas containing carbon monoxide and hydrogen can be obtained without installing a desulfurization device.
【００２１】本発明の還元金属とクリーンな燃料ガスを
同時に製造する方法によれば、排ガス中の硫黄分をほと
んど無くすることができるので、脱硫装置が不要であ
り、設備費用及び操業費用を削減することができる。According to the method of the present invention for simultaneously producing a reduced metal and a clean fuel gas, the sulfur content in the exhaust gas can be almost eliminated, so that a desulfurization device is not required, and equipment and operation costs are reduced. can do.
【００２２】本発明の還元金属とクリーンな燃料ガスを
同時に製造する方法によれば、酸化金属原料や石炭中の
硫黄分を溶融スラグに取り込み、封じ込めるので、硫黄
分が多い比較的低価格の酸化金属原料、石炭、コーク
ス、タール及び重油（高サルファー重油、例えばオリノ
コオイル）を利用することができ、原料費も削減するこ
とが可能である。According to the method of the present invention for simultaneously producing a reduced metal and a clean fuel gas, the metal oxide material and the sulfur in the coal are taken into the molten slag and confined, so that a relatively low-cost oxidation with a high sulfur content is obtained. Metal raw materials, coal, coke, tar, and heavy oil (high sulfur heavy oil, for example, orinoco oil) can be used, and the cost of raw materials can be reduced.
【図１】本発明の一実施形態の溶融還元炉の概略図であ
る。FIG. 1 is a schematic view of a smelting reduction furnace according to an embodiment of the present invention.
【図２】本発明の溶融還元法によって得られた清浄な燃
料ガスを用いて発電した場合と通常の石炭発電の場合の
原料投入量、発生電力量及び硫黄分排出量を比較した図
である。FIG. 2 is a diagram comparing a raw material input amount, a generated power amount, and a sulfur content discharge amount in a case where power is generated using a clean fuel gas obtained by the smelting reduction method of the present invention and in a case of ordinary coal power generation. .
【図３】１２０００ｔｏｎ／ｄａｙの生産量をもつ焼結
設備から排出されるガスの性状を示す図である。FIG. 3 is a diagram showing properties of gas discharged from a sintering facility having a production amount of 12000 tons / day.
【図４】上吹酸素鉄浴方式溶融還元炉の概略図である。FIG. 4 is a schematic view of a top-blown oxygen iron bath type smelting reduction furnace.
１ 焼結機 １０１ 電気集塵機 １０２ 排風機 １０３ 煙突 ２ 焼結機から発生する排ガス ３ クーラー ３０１ 冷却用排風機 ４ クーラー排ガス ５ 溶融還元炉 ５０１ ランス ６ 予備還元炉 ７ 溶融還元炉 ７０１ 酸化金属原料、コークス及びスラグ原料の投入
口 ７０２ 排ガスの排出口 ７０３ 酸素あるいは酸素富化空気、微粉炭及び微粉酸
化金属原料等の吹き込み孔 ７０４ 銑鉄及びスラグの排出口REFERENCE SIGNS LIST 1 sintering machine 101 electric dust collector 102 exhaust fan 103 chimney 2 exhaust gas generated from sintering machine 3 cooler 301 cooling exhaust fan 4 cooler exhaust gas 5 smelting reduction furnace 501 lance 6 preliminary reduction furnace 7 smelting reduction furnace 701 metal oxide material, coke And slag raw material input port 702 exhaust gas exhaust port 703 oxygen or oxygen-enriched air, pulverized coal and pulverized metal oxide raw material etc. 704 discharge port for pig iron and slag
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１０年３月１１日[Submission date] March 11, 1998
【手続補正１】[Procedure amendment 1]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図２[Correction target item name] Figure 2
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図２】 FIG. 2
フロントページの続き (72)発明者 丸川 雄浄 茨城県行方郡潮来町辻1379−28 (72)発明者 山本 高郁 茨城県鹿嶋市鉢形台２丁目10−30 (72)発明者 原 茂太 大阪府高槻市南平台４丁目37−25 (72)発明者 田中 敏宏 大阪府高槻市日吉台一番町10−21 (72)発明者 小杉 隆信 大阪府茨木市北春日丘３−10−19−203Continued on the front page (72) Inventor Yujo Marukawa 1379-28 Tsuji, Itako-cho, Igata-gun (72) Inventor Takaoka Yamamoto 2- 10-30 Hachigatadai, Kashima-shi, Ibaraki Pref. (37) Inventor Toshihiro Tanaka 10-21 Hiyoshidai Ichibancho, Takatsuki City, Osaka Prefecture (72) Inventor Takanobu Kosugi 3-10-19-203 Kita Kasugaoka, Ibaraki City, Osaka Prefecture
Claims (2)
料を溶融還元する過程において、コークス充填層を用い
て強還元雰囲気を作り、石灰系スラグ原料を装入して塩
基度１．０以上の溶融スラグを生成することにより、溶
融還元系内に流入した硫黄分を溶融スラグ中に閉じこめ
ることを特徴とする還元金属とクリーンな燃料ガスを同
時に製造する方法。In the process of melting and reducing a metal oxide raw material that does not use sinter as a main raw material, a strong reducing atmosphere is created using a coke packed bed, a lime-based slag raw material is charged, and a basicity of at least 1.0 is obtained. A method for simultaneously producing reduced metal and a clean fuel gas, characterized in that the sulfur content flowing into the smelting reduction system is confined in the molten slag by generating molten slag.
の原料は溶融還元炉の炉頂部より投入し、微粉状の原料
は炉下部より酸素または酸素富化空気とともに吹き込む
ことを特徴とする請求項１に記載の還元金属とクリーン
な燃料ガスを同時に製造する方法。2. A method of supplying raw materials to a smelting reduction furnace, wherein a lump-shaped raw material is introduced from the furnace top of the smelting reduction furnace, and a fine powdery raw material is blown from the lower part of the furnace together with oxygen or oxygen-enriched air. A method for simultaneously producing the reduced metal according to claim 1 and a clean fuel gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36772497A JPH11193409A (en) | 1997-12-26 | 1997-12-26 | Method for simultaneously manufacturing reduced metal and clean fuel gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36772497A JPH11193409A (en) | 1997-12-26 | 1997-12-26 | Method for simultaneously manufacturing reduced metal and clean fuel gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11193409A true JPH11193409A (en) | 1999-07-21 |
Family
ID=18490038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP36772497A Pending JPH11193409A (en) | 1997-12-26 | 1997-12-26 | Method for simultaneously manufacturing reduced metal and clean fuel gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11193409A (en) |
-
1997
- 1997-12-26 JP JP36772497A patent/JPH11193409A/en active Pending
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