JP2957691B2 - Supply method of sintering raw material - Google Patents
Supply method of sintering raw materialInfo
- Publication number
- JP2957691B2 JP2957691B2 JP32231890A JP32231890A JP2957691B2 JP 2957691 B2 JP2957691 B2 JP 2957691B2 JP 32231890 A JP32231890 A JP 32231890A JP 32231890 A JP32231890 A JP 32231890A JP 2957691 B2 JP2957691 B2 JP 2957691B2
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- sintering
- layer
- sintering raw
- ore
- 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 - Fee Related
Links
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Description
【発明の詳細な説明】 ＜産業上の利用分野＞ 本発明はドワイトロイド焼結機の焼結原料の供給方法
に係り、特に焼結鉱塊を容易に分割することができるよ
うにした焼結原料の供給方法に関するものである。Description: TECHNICAL FIELD The present invention relates to a method for supplying a sintering raw material for a Dwyroid sintering machine, and more particularly, to a sintering method capable of easily dividing a sintered ore block. The present invention relates to a method for supplying a raw material.
＜従来の技術＞ 従来、焼結原料は、焼結機パレット上に20〜50mmの厚
みになるように床敷鉱を供給し、その上に配合により調
整した焼結原料を400〜700mmの層厚になるように供給し
て焼結している。ここで焼結された焼結鉱塊は、焼結機
端部で上層部は低温、下層部は高温の状態で排出され破
砕機で破砕し、クーラで冷却される。<Conventional technology> Conventionally, as a sintering raw material, a bedding ore is supplied on a sintering machine pallet so as to have a thickness of 20 to 50 mm, and a sintering raw material adjusted by blending is supplied on a sintering machine in a layer of 400 to 700 mm. It is supplied to be thick and sintered. The sintered ore block sintered here is discharged at the end of the sintering machine at a low temperature in an upper layer and at a high temperature in a lower layer, crushed by a crusher, and cooled by a cooler.
このようにパレット上での焼結鉱塊の上層部はすでに
低温になっているにも拘らず上層部と下層部を一括して
破砕したのち、クーラにかけていた。これを改善して焼
結鉱塊を上層部と下層部に分割するため、焼結機パレッ
ト上に床敷鉱を供給し、その上に焼結原料を供給し、更
にその上に焼結用副原料の粉石灰石を供給し、その上に
前記同様の焼結原料を供給し、その後点火、焼結を行う
方法が特開昭63−130721に開示されている。即ち、約50
0mm層厚の焼結原料中間に粉石灰石を供給し焼結機出側
の排出口で落下させ二分割させて破砕したのち，クーラ
における冷却媒体の流れ方向上流側に低温の上半部焼結
鉱を、下流側に高温の下半部焼結鉱を供給するものであ
る。As described above, although the upper layer of the sintered ore block on the pallet was already at a low temperature, the upper layer and the lower layer were crushed at once and then cooled. In order to improve this and divide the sintered ore block into an upper layer and a lower layer, bedding ore is supplied on a sintering machine pallet, sintering material is supplied on it, and sintering Japanese Patent Application Laid-Open No. 63-130721 discloses a method in which powdered limestone as an auxiliary material is supplied, a sintering material similar to the above is supplied thereon, and then ignition and sintering are performed. That is, about 50
Powdered limestone is supplied to the middle of the sintering raw material with a thickness of 0 mm, dropped at the outlet of the sintering machine, divided into two parts, and crushed. The ore is supplied with the high-temperature lower half sintered ore on the downstream side.
＜発明が解決しようとする課題＞ 前述従来の焼結鉱塊を二分割する方法には、クーラで
の冷却が効率よく行えるというメリットは得られるもの
の、二分割により発生したブロックの大きさが250mmH×
5000mmW×1500mmL＝1875m3と体積が大きいので、焼結機
出側での衝撃が大きいため、粉化が著しく、篩上となる
正常な焼結鉱が減り、篩下となって再び焼結機にリター
ンされる返鉱原単位が高くなるという問題点がある。<Problems to be Solved by the Invention> The conventional method of dividing a sintered ore block into two pieces has the advantage that cooling can be efficiently performed by a cooler, but the size of a block generated by the two pieces is 250 mm. H ×
5000mm W × 1500mm L = 1875m 3 Large volume, large impact on the exit side of the sintering machine, powdering is remarkable, normal sinter ore on the sieve is reduced, and it goes down the sieve and fired again There is a problem in that the return ore intensity returned in the end is high.
本発明は前述従来技術の問題点を解消し、焼結鉱塊を
分割するのに好適な焼結原料の供給方法を提供すること
を目的とするものである。An object of the present invention is to solve the above-mentioned problems of the conventional technology and to provide a method of supplying a sintering raw material suitable for dividing a sintered ore block.
＜課題を解決するための手段＞ 本発明者らは、焼結鉱塊を容易に多分割する方法につ
いて研究を重ねた結果、焼結鉱塊の分割する位置に石灰
石粉およびコークス粉の混合粉を原料層内に格子状に挿
入することにより容易に多分割できるとの知見を得、こ
の知見に基づいて本発明をなすに至った。<Means for Solving the Problems> As a result of repeated studies on a method of easily dividing a sintered ore lump into multiple parts, the present inventors have found that a mixed powder of limestone powder and coke powder is located at a position where the sintered ore lump is divided. Has been found that it can be easily multi-divided by inserting them into a raw material layer in a lattice shape, and the present invention has been made based on this finding.
本発明は、ドワイトロイド焼結機の原料ホッパからド
ラムフィーダを介してパレット上に焼結原料を供給する
方法において、前記ドラムフィーダからパレット上に供
給される焼結原料層内に層厚方向と幅方向に間隔を置い
て格子状に配列したスリット管を挿入し、当該スリット
管から石灰石粉とコークス粉とを配合した混合粉をキャ
リアガスによって噴出させ、前記焼結原料層内に格子状
の混合層を形成することを特徴とする焼結原料の供給方
法である。The present invention provides a method of supplying a sintering raw material onto a pallet from a raw material hopper of a Dwyroid sintering machine via a drum feeder, wherein the sintering raw material layer supplied onto the pallet from the drum feeder has a thickness direction. Insert a slit tube arranged in a grid at intervals in the width direction, and spout a mixed powder of limestone powder and coke powder from the slit tube with a carrier gas, and form a grid in the sintering raw material layer. This is a method for supplying a sintering raw material, characterized by forming a mixed layer.
具体的には、第１図に示すようにドワイトロイド焼結
機のパレット11上にまず床敷鉱ホッパ３から床敷鉱ドラ
ムフィーダ２を介して床敷鉱９を切り出して床敷層9aを
形成する。次に焼結原料ホッパ５から焼結原料ドラムフ
ィーダ４を介して焼結原料８を切り出し、シュート６上
を辷らせながら床敷鉱層9a上に供給して焼結原料層8aを
形成する。なお床敷鉱層9aおよび焼結原料層8aはそれぞ
れカットオフプレート10によって平面が平坦に均され
る。１は焼結機のスプロケットホイールを示す。Specifically, as shown in FIG. 1, the bedding ore 9 is first cut out from the bedding ore hopper 3 through the bedding ore drum feeder 2 on the pallet 11 of the Dwyroid sintering machine, and the bedding layer 9a is formed. Form. Next, the sintering raw material 8 is cut out from the sintering raw material hopper 5 via the sintering raw material drum feeder 4 and supplied onto the bedding ore layer 9a while sliding on the chute 6 to form the sintering raw material layer 8a. The bedding ore layer 9a and the sintering raw material layer 8a are leveled flat by the cut-off plate 10, respectively. Reference numeral 1 denotes a sprocket wheel of a sintering machine.
本発明においては、前述のようにして焼結原料ドラム
フィーダ４から切り出されパレット11上に形成される焼
結原料層8a内にスリット管７を挿入配置するものであ
る。スリット管７は第２図に示すように焼結原料層8a内
に層厚方向に間隔を置いて水平に挿入した複数本のスリ
ット管7aと、軸方向に間隔を置いて垂直に挿入した複数
本のスリット管7bとを組み合わせて格子状に配置し、ス
リット管７を構成する。In the present invention, the slit tube 7 is inserted and arranged in the sintering material layer 8a cut out from the sintering material drum feeder 4 and formed on the pallet 11 as described above. As shown in FIG. 2, the slit tube 7 has a plurality of slit tubes 7a horizontally inserted into the sintering raw material layer 8a at intervals in the layer thickness direction, and a plurality of slit tubes 7 vertically inserted at an axial interval. The slit tubes 7b are combined and arranged in a grid to form the slit tubes 7.
そしてスリット管7a、7bにはそれぞれ供給管7a′、7
b′が接続されていると共にスリット12が設けてある。
なお、スリット管7aと7bを組み合わせて構成されるスリ
ット管７は、第２図に示すような配置および本数に限定
されるものではなく、分割すべき焼結鉱塊の大きさに応
じてスリット管７に設けたスリット12からキャリアガス
と共に噴出される石灰石粉とコークス粉との混合粉によ
り焼結原料層8a内に格子状の混合層を形成することがで
きれば十分である。Supply pipes 7a 'and 7 are provided in slit pipes 7a and 7b, respectively.
b 'is connected and a slit 12 is provided.
The slit tubes 7 formed by combining the slit tubes 7a and 7b are not limited to the arrangement and the number as shown in FIG. 2, but may be slit according to the size of the sintered ore block to be divided. It is sufficient that a mixed layer of limestone and coke spouted together with carrier gas from the slit 12 provided in the pipe 7 can form a lattice-like mixed layer in the sintering raw material layer 8a.
このようなスリット管７より石灰石粉およびコークス
粉の混合粉を噴出させ、混合粉の格子区画を焼結原料層
8a内に形成し、その後、点火炉で点火して焼結を行い、
焼結機の出側でパレット11から排出口を介して落下させ
れば100mmH×1600mmW×1500mmL＝0.24m3の大きさの焼結
鉱塊に容易に分割される。A mixed powder of limestone powder and coke powder is spouted from such a slit tube 7 to form a grid section of the mixed powder into a sintering raw material layer.
8a, then fired in an ignition furnace and sintered
If it is dropped from the pallet 11 through the discharge port on the outlet side of the sintering machine, it is easily divided into sintered ore blocks having a size of 100 mm H × 1600 mm W × 1500 mm L = 0.24 m 3 .
＜作 用＞ 本発明に係る焼結鉱原料の供給方法によると、焼結原
料と接触している石灰石のごく一部が反応溶融するが、
石灰石の殆どは石灰石の上の層で焼結が行われた熱が排
ガスとなって通過する際に分解し、CaCO3がCaOになり溶
融塊成化はしない。このため焼結鉱塊は石灰石を供給し
た格子区画で落下衝撃により分割することになる。<Operation> According to the method for supplying a raw material for sinter according to the present invention, only a small part of the limestone in contact with the raw material for sintering reacts and melts.
Most of the limestone is decomposed when the heat generated by sintering in the layer above the limestone passes as exhaust gas, and CaCO 3 becomes CaO and does not agglomerate. For this reason, the sintered ore block is divided by the drop impact in the grid section supplied with limestone.
この時、コークスを混合するのは焼結過程のCaCO3がC
aOになる時の反応が吸熱反応を起こすため周囲の焼結層
は熱不足となり脆弱化するのを防止する。焼結鉱塊の好
適寸法は、0.2〜0.4m3であるのでスリット管の配置間隔
は、焼結鉱塊の好適寸法とほぼ同様とするのが良い。好
適寸法の上限値を超すと衝撃が大きく粉化し、返鉱原単
位の増加となり、下限値以下であるとスリット部の面積
が増大し、焼結層の容積が減少し、これによる生産性は
低下するので好ましくない。At this time, coke is mixed because CaCO 3 in the sintering process is C
Since the reaction at the time of aO causes an endothermic reaction, the surrounding sintered layer is prevented from becoming weak due to insufficient heat. Since the preferred size of the sintered ore is 0.2 to 0.4 m 3 , the interval between the slit tubes is preferably substantially the same as the preferred size of the sintered ore. If the upper limit of the preferred size is exceeded, the impact is greatly powdered, and the unit of return ore increases, and if it is less than the lower limit, the area of the slit portion increases, the volume of the sintered layer decreases, and the productivity due to this decreases. It is not preferable because it lowers.
また、焼結層の上層部はもともと強度が弱い焼結層で
あるためスリット管の挿入は好ましくない。Further, since the upper layer of the sintered layer is originally a sintered layer having low strength, insertion of a slit tube is not preferable.
＜実施例＞ 第１図に示すドワイトロイド焼結機のパレット上に30
mm厚の床敷鉱層と650mm厚の焼結原料層となるよう各々
のドラムフィーダを介して供給する。前記焼結原料の層
厚方向と幅方向対応に各々スリット管（スリット幅2m
m）を150mm間隔で３段および1500mm間隔に２ケ所配置
し、このスリット管より石灰石中にコークス粉3.5％を
配合した混合粉を15kg/minで噴出させ混合粉の格子区画
を焼結原料層内に作る。その時のパレット移動速度は3.
0m/min、原料装入密度は1.75t/m3である。その後、点
火、焼結を行い、焼結機出側の排出口で落下させほぼ15
0mmH×1600mmW×1500mmLの大きさの焼結鉱塊を得た。<Example> On a pallet of a Dwyroid sintering machine shown in FIG.
It is supplied via each drum feeder so as to form a bedding layer having a thickness of mm and a sintering material layer having a thickness of 650 mm. Slit tube (slit width 2m) corresponding to the layer thickness direction and width direction of the sintering raw material
m) are arranged in three stages at 150 mm intervals and at two locations at 1500 mm intervals, and a mixed powder containing 3.5% coke powder mixed into limestone is spouted at 15 kg / min from this slit tube to form a grid section of the mixed powder as a sintering material layer. Make within. The pallet movement speed at that time is 3.
0 m / min, the raw material charging density is 1.75 t / m 3 . After that, ignition and sintering are performed.
A sintered ore having a size of 0 mm H × 1600 mm W × 1500 mm L was obtained.
比較例として上記配置の焼結原料層厚中央部横一線の
スリット管より上記同様の混合粉を15kg/minで噴出させ
焼結原料を二層に区画し、300mmH×5000mmW×1500mmLの
大きさの焼結鉱塊を得た。その他の条件は実施例と同様
とした。As a comparative example, the same mixed powder as above was squirted at 15 kg / min from a slit tube in the center of the sintering raw material layer at the center in the horizontal direction at 15 kg / min to divide the sintering raw material into two layers, and 300 mm H × 5000 mm W × 1500 mm L A size sintered ore was obtained. Other conditions were the same as in the example.
その製造結果を第１表に示す。第１表で分かるよう
に、返鉱原単位、5mm以下の％の各々に改善が見受けら
れる。Table 1 shows the production results. As can be seen in Table 1, improvements are seen in each of the return unit intensity and the percentage of 5 mm or less.
＜発明の効果＞ 以上説明したように本発明の焼結鉱原料の供給方法に
よると、焼結機出側の排出口で落下の際好適の大きさの
焼結鉱塊に分割できるので、焼結鉱塊の粉化が防止でき
返鉱原単位の減少により歩留り向上が達成できる。 <Effects of the Invention> As described above, according to the method for supplying a raw material for sinter of the present invention, since the ore can be divided into sintered blocks of a suitable size when dropped at the discharge port on the outlet side of the sintering machine, Powdering of the condensed lumps can be prevented, and the yield can be improved by reducing the unit return ore.
第１図は、本発明に係る原料供給方法を示す概略の説明
図、第２図は第１図のＡ−Ａ矢視を示す断面図である。 １……焼結機のスプロケットホイール、 ２……床敷鉱ドラムフィーダ、 ３……床敷鉱ホッパ、 ４……焼結原料ドラムフィーダ、 ５……焼結原料ホッパ、 ６……シュート、 ７……スリット管、 ８……焼結原料、 ９……床敷鉱、 10……カットオフプレート、 11……パレット、 12……スリット。FIG. 1 is a schematic explanatory view showing a raw material supply method according to the present invention, and FIG. 2 is a sectional view taken along line AA of FIG. DESCRIPTION OF SYMBOLS 1 ... Sprocket wheel of sintering machine, 2 ... Bedding ore drum feeder, 3 ... Bedding ore hopper, 4 ... Sintering raw material drum feeder, 5 ... Sintering raw material hopper, 6 ... Chute, 7 …… Slit tube, 8… Sintering raw material, 9… Bedding, 10 …… Cut-off plate, 11… Pallet, 12… Slit.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭57−158334（ＪＰ，Ａ) 特開 昭61−127827（ＪＰ，Ａ) 特開 昭61−195926（ＪＰ，Ａ) 特開 昭63−130721（ＪＰ，Ａ) 特開 昭64−52030（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) C22B 1/20 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-57-158334 (JP, A) JP-A-61-127827 (JP, A) JP-A-61-195926 (JP, A) JP-A 63-158926 130721 (JP, A) JP-A-64-52030 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) C22B 1/20
Claims (1)
ラムフィーダを介してパレット上に焼結原料を供給する
方法において、前記ドラムフィーダからパレット上に供
給される焼結原料層内に層厚方向と幅方向に間隔を置い
て格子状に配列したスリット管を挿入し、当該スリット
管から石灰石粉とコークス粉とを配合した混合粉をキャ
リアガスによって噴出させ、前記焼結原料層内に格子状
の混合層を形成することを特徴とする焼結原料の供給方
法。1. A method for supplying a sintering raw material from a raw material hopper of a Dwyroid sintering machine onto a pallet via a drum feeder, wherein a sintering raw material layer supplied from the drum feeder onto the pallet has a thickness direction. And a slit tube arranged in a grid at intervals in the width direction is inserted, and a mixed powder of limestone powder and coke powder is ejected from the slit tube by a carrier gas, and a grid-like shape is formed in the sintering raw material layer. A method for supplying a sintering raw material, comprising forming a mixed layer of:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32231890A JP2957691B2 (en) | 1990-11-28 | 1990-11-28 | Supply method of sintering raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32231890A JP2957691B2 (en) | 1990-11-28 | 1990-11-28 | Supply method of sintering raw material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04193914A JPH04193914A (en) | 1992-07-14 |
| JP2957691B2 true JP2957691B2 (en) | 1999-10-06 |
Family
ID=18142296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32231890A Expired - Fee Related JP2957691B2 (en) | 1990-11-28 | 1990-11-28 | Supply method of sintering raw material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2957691B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449237C (en) * | 2007-02-13 | 2009-01-07 | 中冶长天国际工程有限责任公司 | Swinging funnel used for paving bottom flavoring of sintering machine |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100411271B1 (en) * | 1999-11-11 | 2003-12-18 | 주식회사 포스코 | Method for mixing lime stone dust into raw material of sintering |
| US8121012B2 (en) | 2008-11-19 | 2012-02-21 | Hoya Corporation | Objective lens and optical information recording/reproducing apparatus |
| CN106996696A (en) * | 2016-01-25 | 2017-08-01 | 中钢设备有限公司 | sintering machine distributing gate |
-
1990
- 1990-11-28 JP JP32231890A patent/JP2957691B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449237C (en) * | 2007-02-13 | 2009-01-07 | 中冶长天国际工程有限责任公司 | Swinging funnel used for paving bottom flavoring of sintering machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04193914A (en) | 1992-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5194378B2 (en) | Method for producing sintered ore | |
| US20100037728A1 (en) | Method for reducing chromium containing raw material | |
| CN106536765A (en) | Method for producing pellets and method for producing iron-nickel alloy | |
| JP2957691B2 (en) | Supply method of sintering raw material | |
| EP3892744B1 (en) | Sintered ore manufacturing method | |
| JP3247276B2 (en) | Blast furnace charging method | |
| SK287060B6 (en) | A method and an apparatus for recovery of metals | |
| CN106119588A (en) | Prepare the method and system of nitrogen-vanadium alloy | |
| JP2510193B2 (en) | Sinter production method | |
| CA1124976A (en) | Manufacture of elongate workpiece from pelleted material | |
| JP3294908B2 (en) | Sintering operation method | |
| JP7409010B2 (en) | Nickel oxide ore smelting method | |
| JP2582086B2 (en) | Crushing method of sintered cake | |
| JP6155602B2 (en) | Method for producing sintered ore | |
| RU105625U1 (en) | TECHNOLOGICAL LINE FOR THE PRODUCTION OF IRON IRON HIGH QUALITY GRANULATED | |
| JPS63130721A (en) | Method for supplying sintered ore raw material | |
| JPS5839748A (en) | Treatment of sintered ore | |
| US6863710B1 (en) | Sinter mix enhancer | |
| JPH05132722A (en) | Method for cooling sintered ore | |
| JPS5927368B2 (en) | Production method of metallic calcium | |
| JPH0931553A (en) | Production of sintered ore | |
| JPH0322451B2 (en) | ||
| SU281497A1 (en) | Method of obtaining low-carbon sponge iron or iron powder | |
| JPH01205038A (en) | Production of sintered ore | |
| JPS60114526A (en) | Production of sintered ore |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |