JPS6021210B2 - Sintered ore manufacturing method - Google Patents

Sintered ore manufacturing method

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Publication number
JPS6021210B2
JPS6021210B2 JP1282879A JP1282879A JPS6021210B2 JP S6021210 B2 JPS6021210 B2 JP S6021210B2 JP 1282879 A JP1282879 A JP 1282879A JP 1282879 A JP1282879 A JP 1282879A JP S6021210 B2 JPS6021210 B2 JP S6021210B2
Authority
JP
Japan
Prior art keywords
ignition
coke
layer
surface layer
temperature
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.)
Expired
Application number
JP1282879A
Other languages
Japanese (ja)
Other versions
JPS55107741A (en
Inventor
英明 相馬
司 高田
正己 和島
秀雄 蟹沢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP1282879A priority Critical patent/JPS6021210B2/en
Publication of JPS55107741A publication Critical patent/JPS55107741A/en
Publication of JPS6021210B2 publication Critical patent/JPS6021210B2/en
Expired legal-status Critical Current

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Description

【発明の詳細な説明】 本発明はドワィトロィド式凝結機により、凝結鉱を製造
する方法の改良に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a method for producing coagulated ore using a Dwightroid type coagulator.

産業界ではドワィトロィド式焼精機が広く用いられてい
るが、この形式の暁給機では点火炉内で配合原料の表面
層に点火が行われ下向きに吸気することにより原料層内
の燃焼を漸次表層部から下層部に移行せしめ、全燃焼反
応過程を15〜25分程度で行っている。焼結機の製造
にあたって特に留意すべきことは、暁鯖鉱品質をより良
くすること、競綾ベッドの通気性を良好にし生産性を高
めること、競縞鉱製造に必要なコークスやCOGの使用
量をできるだけ少なくすることなどであり、これらの政
絶のために当業者の劣力が続けられている。
The Dwightroid type sintering machine is widely used in industry, and in this type of dawn feeder, the surface layer of the blended raw material is ignited in the ignition furnace, and by sucking air downward, combustion within the raw material layer is gradually increased to the surface layer. The entire combustion reaction process takes about 15 to 25 minutes. When manufacturing a sintering machine, special attention must be paid to improving the quality of Akatsukisabaite, improving productivity by improving the permeability of the Keisabite bed, and using coke and COG, which are necessary for the production of Keisabaite. The aim is to reduce the amount as much as possible, and due to these efforts, those skilled in the art continue to be at a disadvantage.

ところで省エネルギーの立場から焼結プロセスを検討し
てみると、暁結過程で使用される燃料は配合原料中に数
パーセント含まれるコークスや点火炉、保熱炉用熱源の
COGが大部分でありこれらの燃料使用量が抵減できれ
ば省エネルギー上大いに役立つことになる。
By the way, when considering the sintering process from the standpoint of energy conservation, the fuel used in the sintering process is mostly coke, which is a few percent contained in the blended raw materials, and COG, which is the heat source for the ignition furnace and heat retention furnace. If the amount of fuel used can be reduced, it will be of great help in energy conservation.

ところがただ単に燃料使用量を抵減しても良い結果は得
られるものではなく、コークス配合割合を大幅に低減す
ると塊結鉱の品質を悪化させたり、返鉱が多くなるとい
う問題がある。
However, good results cannot be obtained simply by reducing the amount of fuel used; if the coke blending ratio is significantly reduced, the quality of the lump ore deteriorates and the amount of returned ore increases.

また、点火炉におけるCOd使用量を単に低減すると着
火不良や嫌けムラを生じ競結鉱品質を悪化させる贋れが
ある。従来のドワィトロィド式煉結機による暁結鉱の製
造において、孫鯖鉱の品質が悪く脆弱な部分は、パレッ
ト側壁部および塚結ベッド上層部である。
Furthermore, simply reducing the amount of COd used in the ignition furnace may result in poor ignition or uneven ignition, resulting in deterioration of the quality of coalesced ore. In the production of Akatsuki ore using a conventional Dwightroid briner, the poor quality and fragile parts of the Sunsaba ore are the pallet side walls and the upper layer of the mound bed.

その原因は、パレット側壁部は、暁給進行に伴うシンタ
ーケーキの収縮により隙間が生じ、該隙間からの漏風が
発生しやすいこと、および側壁からの放熱により温度が
パレット幅方向の中間部に比較して低いこと、さらに点
火時にフレームが側壁部まで十分達しないため焼けムラ
が生じることがあげられる。焼けムラをなくするために
点火炉におけるCOG使用量を多くしたり点火温度を高
めたりするのは燃料原単位を悪化させるばかりでなく、
点火時における配合原料表層部への熱衝撃を大ならしめ
て該表層部の疑似粒子を破壊し通タ気性を阻害する欠点
がある。一方、競緒ベッド上層部は点火炉を出た直後に
冷却空気を吸引するため蛾結過程における高温域帯蟹時
間が十分保たれずに急冷されるため脆弱となる。
The reason for this is that gaps are created in the pallet side walls due to the shrinkage of the sinter cake as the sinter cake progresses, and air leakage is likely to occur from these gaps.The temperature is also lower than that of the middle part in the width direction of the pallet due to heat radiation from the side walls. Furthermore, the flame does not reach the side wall sufficiently during ignition, resulting in uneven burning. Increasing the amount of COG used in the ignition furnace or raising the ignition temperature in order to eliminate uneven burning not only worsens the fuel consumption rate, but also
It has the disadvantage that it increases the thermal shock to the surface layer of the blended raw material at the time of ignition, destroys the pseudo particles in the surface layer, and impairs air permeability. On the other hand, the upper layer of the bed is vulnerable because it sucks in cooling air immediately after leaving the ignition furnace, so the high temperature zone during the molding process is not sufficiently maintained and the bed cools rapidly.

燐結ベッド上層部の品質向上を計るために点火炉に続い
て保熱炉を設け「点火炉を出た後の焼鯖ベッド表層を保
熱する方法が知られているが、この方法によれば競結鉱
の品質を改善する効果はあるがヒートパターンの拡大に
より鱗縞時間を長引かせるという本質的な欠点を有して
いた。本発明は、上記従来法の欠点や問題点を有利に解
決するためになされたものであってドワイトロィド式焼
結機により競給鉱を製造する方法において、パレット上
の配合原料表層に厚さ3〜4止めの範囲でコークス含有
率30%以上の高コークス配合層を形成せしめると共に
配合原料表層を200〜500℃に予熱し、しかる後該
表層へ点火し競結することを特徴とする競結鉱製造方法
を要旨とするものである。以下図面に基づき本発明を説
明する。
In order to improve the quality of the upper layer of the phosphorized bed, a heat retention furnace is installed next to the ignition furnace. Although this method has the effect of improving the quality of competitive ore, it has the essential drawback of prolonging the scale streaking time due to the expansion of the heat pattern.The present invention has advantageously overcome the drawbacks and problems of the conventional method. This method was developed to solve the problem, and in the method of producing competitive feed ore using a Dwight Lloyd sintering machine, high coke with a coke content of 30% or more is placed on the surface layer of the mixed raw materials on the pallet in a thickness of 3 to 4 stops. The gist of this method is to form a blended layer, preheat the surface layer of blended raw materials to 200 to 500°C, and then ignite the surface layer to cause coalescence.The following is based on the drawings. The present invention will be explained.

第1図は本発明の実施態様を示す説明図である。FIG. 1 is an explanatory diagram showing an embodiment of the present invention.

第1図に示すようにドワィトロイド式焼精機においては
、暁結配合原料1をホツパー2からドラムフイーダ−3
.スローピングプレート5を介してパレット7上へ連続
的に供繋台し原料給鉱側のスプロケット4を回転させて
パレット7を低速で移動させると共に下方に複数個設け
たウィンドボックス9,9・・・・・・、メインダクト
10,排ガス集塵機1 1を経て吸引ブロワ−12によ
り吸気し、点火炉6で菱入物8の上面へ点火してパレッ
ト7上の装入物8が擬鉱部に達する間に全層にわたって
暁結反応を完了させるように競緒鉱を連続的に製造する
As shown in FIG.
.. The pallet 7 is continuously supplied via the sloping plate 5, and the sprocket 4 on the raw material supply side is rotated to move the pallet 7 at low speed, and a plurality of wind boxes 9, 9 are provided below. . . . Air is taken in by the suction blower 12 through the main duct 10 and the exhaust gas dust collector 11, and is ignited onto the upper surface of the quartz charge 8 in the ignition furnace 6, so that the charge 8 on the pallet 7 reaches the pseudo ore section. In the meantime, the ore is produced continuously so that the dawning reaction is completed throughout the entire layer.

本発明はかかる焼結機において、前記ホツバー2,ドラ
ムフイ−ダー3,スローピングブレート5からなる給鉱
装置22とは別に、ホツバ−2A,ドラムフイーダー3
A,スローピングプレ−ト5Aから成る給鉱装置22A
を給鉱装置22に続いて下流側に設け、点火炉6に隣近
してその上流側に予熱炉19を設ける。
The present invention provides such a sintering machine in which, in addition to the ore feeding device 22 consisting of the hopper 2, the drum feeder 3, and the sloping plate 5, the hopper 2A, the drum feeder 3
A, ore feeding device 22A consisting of sloping plate 5A
is provided on the downstream side following the ore feeding device 22, and a preheating furnace 19 is provided adjacent to and upstream of the ignition furnace 6.

こうして、暁結鉱を冷却する冷却器16の排気筒17の
うち200〜500℃の排ガスが得られる排気筒から上
記予熱炉19へ排ガスを導管20‘こより供V給するよ
うに構成する。なお、メインダクト10からも高熱排ガ
スが得られるので、上記温度範囲の排ガスが得られる位
置を選定し、排ガス導入管21により流量調整弁18,
集塵機11A,吸引フロワー12Aを介してメインダク
ト10内の排ガスを導管20Aにより上記予熱炉19へ
供聯合してもよい。図中13は破枠機、14はホットス
クリーン、15はパイプロフイーダーを示す。
In this way, exhaust gas is supplied from the exhaust pipe 17 of the cooler 16 for cooling the dawn concretion from which exhaust gas of 200 to 500° C. is obtained to the preheating furnace 19 through the conduit 20'. Note that high-temperature exhaust gas is also obtained from the main duct 10, so select a position where exhaust gas in the above temperature range can be obtained, and use the exhaust gas introduction pipe 21 to connect the flow rate regulating valve 18,
The exhaust gas in the main duct 10 may be fed to the preheating furnace 19 through the conduit 20A via the dust collector 11A and the suction floor 12A. In the figure, 13 indicates a frame breaking machine, 14 indicates a hot screen, and 15 indicates a pipe flow feeder.

上記のように構成した装置のうち、ホツパー2内には通
常用いられる配合原料1が、またホッパー2A内にはコ
ークス配合率を30%以上に濃化した配合原料IAが充
填されている。そうして、上記ホッパ−2からドラムフ
イーダー3、スローピングプレート5を介してパレット
7上へ供V給された配合原料の上層にホッバー2A、ド
ラムフィーダ−3A、スローピングプレート5Aを介し
てコークス配合率の高い上記配合原料IAを厚さ3〜4
仇岬の範囲で層状に袋入する。このように菱入された配
合原料はパレットの移動と共に子熱炉19へ入り、ここ
で表層部が200〜500℃の高熱排ガスにより予熱さ
れた後点火炉6で表層へ点火が行われ暁結される。本発
明において、配合原料表層に厚さ3〜4比岬の範囲でコ
ークス含有率30%以上の高コークス配合層を形成せし
めるのは、焼けムラを防止し蟻結ベッド表層部の通気抵
抗を経滅するために行うもので、コークス含有率が30
%未満では3側の層厚とした場合に焼けムラを生じる塵
れがあり、また層厚が4W舷を超えると、凝結ベッド上
層部が熱劫図奏功となり該上層部の通気抵孔を増加する
ので好ましくない。なお、高コークス配合層のコ−クス
含有率の上限値は100%であってよい。
In the apparatus configured as described above, the hopper 2 is filled with a commonly used blended raw material 1, and the hopper 2A is filled with a blended raw material IA with a coke blending ratio of 30% or more. Then, coke is mixed into the upper layer of the blended raw materials supplied from the hopper 2 to the pallet 7 via the drum feeder 3 and sloping plate 5 via the hopper 2A, drum feeder 3A, and sloping plate 5A. The above blended raw material IA with a high ratio is used in a thickness of 3 to 4
Bags are layered in the area around the Cape. As the pallets move, the blended raw materials entered in this way enter the sub-heating furnace 19, where the surface layer is preheated by high-temperature exhaust gas of 200 to 500°C.Then, the surface layer is ignited in the ignition furnace 6 and ignites. be done. In the present invention, the reason why a high coke blend layer with a coke content of 30% or more is formed on the surface layer of the blended raw materials is to form a layer with a thickness of 3 to 4 layers with a coke content of 30% or more. The coke content is 30%.
If the layer thickness is less than 3%, there will be dust that causes uneven burning when the layer thickness is 3. If the layer thickness exceeds 4W, the upper layer of the condensation bed will become overheated and the ventilation resistance of the upper layer will increase. Therefore, it is not desirable. Note that the upper limit of the coke content of the high coke blend layer may be 100%.

また、本発明において予熱炉による配合原料表層の子熱
温度を200〜50ぴ0とするのは、200℃未満では
子熱の効果が顕著に表われず、また500℃を超える高
温ではコークスに着火する虜れがあるのでよくない。更
に、本発明において点火炉における点火温度は700〜
900℃の範囲とするのが有効で、700℃未満では点
火が十分に行われず、90000を超える高温とするの
は、それに見合う効果が得られずかつ不経剤である。実
施例 第1表に示す銘柄及び配合割合の原料に3.4%のコー
クスを配合し、水分6.0%に調整してなる配合原料を
使用し、40k9競結論験鍋装置により凝結試験を行っ
た。
In addition, in the present invention, the temperature of the child heat of the surface layer of the blended raw materials in the preheating furnace is set to 200 to 50 p0, because the effect of child heat is not noticeable below 200°C, and at high temperatures exceeding 500°C, coke does not change. It's not good because there is a tendency to catch fire. Furthermore, in the present invention, the ignition temperature in the ignition furnace is 700~
It is effective to set the temperature in the range of 900°C; if the temperature is less than 700°C, sufficient ignition will not occur, and if the temperature is set to a high temperature exceeding 90,000°C, the commensurate effect cannot be obtained and it is a sterilizing agent. Example Using a blended raw material of the brand and blending ratio shown in Table 1 with 3.4% coke and adjusted to a moisture content of 6.0%, a coagulation test was conducted using a 40k9 competitive experimental pot device. went.

試験条件は層高40仇舷、負圧1700畑日20とし、
層高40仇舷のうち表層の20肋をコークス配合割合5
0%とした高コークス配合層となし、点火前に30ぴ0
の子熱空気により2分間予熱して嫌結した。
The test conditions were a bed height of 40 m and a negative pressure of 1,700 m and 20 field days.
20 ribs on the surface layer with a bed height of 40 m and a coke ratio of 5
0% high coke blend layer and 30% coke before ignition.
The mixture was preheated with hot air for 2 minutes to cool down.

なお、比較のために上層部に高コークス配合層を形成し
ない従来法(比較例1)、及び比較例1に子熱を併用し
た従来法(比較例2)についても試験を行った。
For comparison, tests were also conducted on a conventional method (Comparative Example 1) in which a high coke blend layer was not formed in the upper layer, and a conventional method (Comparative Example 2) in which Comparative Example 1 was combined with child heating.

試験水準を第2表に示す試験結果はまとめて第3表に示
し、また点火後経過時間に対する競縞ベッド通過風速を
第2図に、ヒートパターンを第3図に示した。
The test results are shown in Table 2. The test results are shown in Table 3. The wind speed passing through the striped bed versus the time elapsed after ignition is shown in FIG. 2, and the heat pattern is shown in FIG.

第2図に示す。Shown in Figure 2.

本発明法aによれば比較例1、b、比較例2、cに比べ
点火後暁結完了までの間における競結ベッド通過風速が
大であり、斑続時間が短いことが判る。このことは本発
明に係る子熱効果と、高コークス配合層の形成に伴う点
火温度の低減による点火時の配合原料表層部における熱
衝撃の緩和により疑似粒子の破壊を軽減できるためであ
る。即ち、従来の焼結機ではパレット7上に菱入した袋
入物8は1000qo以上の高温状態にある点火炉に入
るといきなり高熱の火災にさらされ急速に昇温点火され
ていたので菱入物上面の受ける熱衝撃は大きく、このた
め配合原料表層部の疑似粒子が破壊されてこの部分の通
気性を悪化させ、しかも点火炉において生じた表層部の
通気性悪化は鱗絹終了時までその響を及ぼし鱗縞時間の
増大をもたらしていた。
It can be seen that according to method a of the present invention, the wind speed passing through the cohesive bed after ignition until the completion of dawn formation is higher than in Comparative Examples 1, b, 2, and c, and the unevenness time is short. This is because the destruction of pseudo particles can be reduced due to the heat shock effect of the present invention and the relaxation of thermal shock in the surface layer of the blended raw material at the time of ignition due to the reduction in ignition temperature due to the formation of a high coke blend layer. In other words, in the conventional sintering machine, when the bags 8 placed on the pallet 7 enter the ignition furnace, which is at a high temperature of 1000 qo or more, they are suddenly exposed to a high-temperature fire and are ignited to rapidly raise the temperature. The upper surface of the product is subjected to a large thermal shock, which destroys the pseudo particles on the surface layer of the compounded raw material, worsening the air permeability of this area.Moreover, the deterioration of air permeability of the surface layer that occurs in the ignition furnace continues until the end of the scale process. This caused an increase in scale stripe time.

点火時の菱入物表層における疑似粒子の破壊は疑似粒子
に含まれる水分の急激な蒸発に伴う内部応力と常温に近
い温度からいきなり100ぴ0以上の高熱に火災にさら
される熱衝撃によるものであるから、本発明に係る前記
予熱と、点火温度の抵減は点火時における配合原料表層
部の疑似粒子の破壊を緩和せしめる効果が顕著である。
第3図は孫緒ベッド上層(表層より50柵の点)、中層
(表層より20仇肌の点)及び下層(表層より30比舷
の点)のそれぞれのヒートパターンを示すものであるが
、本発明法は比較例 、比較例2に比べ、上層における
温度が上昇し、1100午0以上での高温城における滞
留時間が延長していることが判る。
The destruction of the pseudo-particles on the surface layer of the stoneware during ignition is due to the internal stress caused by the rapid evaporation of the water contained in the pseudo-particles and the thermal shock caused by sudden exposure to high heat of over 100 psi from near room temperature. Therefore, the preheating and the reduction of the ignition temperature according to the present invention have a remarkable effect of alleviating the destruction of pseudo particles in the surface layer of the blended raw material during ignition.
Figure 3 shows the heat patterns of the upper layer (a point 50 meters above the surface layer), the middle layer (a point 20 meters above the surface layer), and the lower layer (a point 30 meters above the surface layer) of the Suno bed. It can be seen that in the method of the present invention, the temperature in the upper layer increases and the residence time in the high temperature castle at 1100 o'clock or higher is extended compared to Comparative Example and Comparative Example 2.

このことは暁緒ベッド上層部のの品質を改善することを
示すものである。第3表は、試験結果をまとめて示した
ものであるが、本発明法によれば競続騰間が大幅に短縮
し、生産率が向上し、成品歩留、落下強度、耐還元粉化
性も向上することが判る、コークス原単位については、
コークス添加量が増加する分だけ悪化することになるが
、成品歩留を向上できることによって比較例1と同等の
レベルになっている。
This indicates that the quality of the upper layer of the Akio bed is improved. Table 3 summarizes the test results. According to the method of the present invention, the competitive rise time is significantly shortened, the production rate is improved, and the product yield, drop strength, and resistance to reduction and powdering are improved. Regarding coke consumption, it can be seen that
Although it deteriorates as the amount of coke added increases, it is at the same level as Comparative Example 1 because the product yield can be improved.

しかし点火炉で使用するCOGの量が著しく低減夕でき
るためCOGを含めた燃料原単位は低減が可能である。
なお、本発明に係る菱入物上層部の高コークス配合層は
、側部あるいは焼けムラの生じやすい部分にのみ応用し
ても焼けムラ防止効果を高めることが可能である。第1
表第2表 第3表 以上述べたように、本発明によれば、競結ベッドの通気
性を改善して暁結時間を短縮し、煉結鉱の品質を向上さ
せ、更に燃料原単位の低減が期待できるなどの効果を奏
する。
However, since the amount of COG used in the ignition furnace can be significantly reduced, the fuel consumption rate including COG can be reduced.
Note that the high coke blend layer of the upper layer of the diamond-shaped article according to the present invention can enhance the effect of preventing uneven burning even if it is applied only to the sides or areas where uneven burning is likely to occur. 1st
Table 2 Table 3 As stated above, according to the present invention, the permeability of the briquette bed is improved, the briquette time is shortened, the quality of the briquettes is improved, and the fuel consumption rate is reduced. It is expected that the reduction will be achieved.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の実施態様を示す説明図、第2図は点火
後経過時間に対する焼結ベッド通過風速を例示した図、
第3図はヒートパターンを例示した図。 1,IA…嬢鯖配合原料、2,2A…ホツパ−、4・・
・スブロケット、6・・・点火炉、7・・・パレット、
9…ウインドボックス、10…メインダクト、16…冷
却器、17…排気筒、19・・・予熱炉、第1図 第2図 第3図
FIG. 1 is an explanatory diagram showing an embodiment of the present invention, FIG. 2 is a diagram illustrating the wind speed passing through the sintering bed with respect to the elapsed time after ignition,
FIG. 3 is a diagram illustrating a heat pattern. 1, IA...Mackerel mixed raw materials, 2,2A...Hopper, 4...
・Subrocket, 6...Ignition furnace, 7...Pallet,
9...Wind box, 10...Main duct, 16...Cooler, 17...Exhaust pipe, 19...Preheating furnace, Figure 1, Figure 2, Figure 3

Claims (1)

【特許請求の範囲】[Claims] 1 ドワイトロイド式焼結機により焼結鉱を製造する方
法において、パレツト上の配合原料表層に厚さ3〜40
mmの範囲でコークス含有率30%以上の高コークス配
合層を形成せしめると共に配合原料表層を200〜50
0℃に予熱し、しかる後該表層へ点火し焼結することを
特徴とする焼結鉱製造方法。
1 In a method for producing sintered ore using a Dwight Lloyd sintering machine, a thickness of 3 to 40 mm is applied to the surface layer of the raw materials on a pallet.
Form a high coke blend layer with a coke content of 30% or more in the range of 200 to 50 mm.
A method for producing sintered ore, which comprises preheating to 0°C and then igniting the surface layer to sinter it.
JP1282879A 1979-02-08 1979-02-08 Sintered ore manufacturing method Expired JPS6021210B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1282879A JPS6021210B2 (en) 1979-02-08 1979-02-08 Sintered ore manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1282879A JPS6021210B2 (en) 1979-02-08 1979-02-08 Sintered ore manufacturing method

Publications (2)

Publication Number Publication Date
JPS55107741A JPS55107741A (en) 1980-08-19
JPS6021210B2 true JPS6021210B2 (en) 1985-05-25

Family

ID=11816235

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1282879A Expired JPS6021210B2 (en) 1979-02-08 1979-02-08 Sintered ore manufacturing method

Country Status (1)

Country Link
JP (1) JPS6021210B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0335206Y2 (en) * 1985-08-30 1991-07-25

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS589936A (en) * 1981-07-10 1983-01-20 Nippon Kokan Kk <Nkk> Manufacture of agglomerated ore
JPS6039129A (en) * 1983-08-10 1985-02-28 Nippon Steel Corp Method for igniting starting material for sintering
JPS6179735A (en) * 1984-09-27 1986-04-23 Nippon Steel Corp Manufacture of sintered ore by adding fuel to surface layer
KR100384638B1 (en) * 1999-06-04 2003-05-22 주식회사 포스코 Method for manufacturing sintered ore by using exaust gas
KR100543184B1 (en) * 2001-05-17 2006-01-20 주식회사 포스코 equipments for improving the permeability of sintering bed

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0335206Y2 (en) * 1985-08-30 1991-07-25

Also Published As

Publication number Publication date
JPS55107741A (en) 1980-08-19

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