JPS6349728B2 - - Google Patents
Info
- Publication number
- JPS6349728B2 JPS6349728B2 JP4867784A JP4867784A JPS6349728B2 JP S6349728 B2 JPS6349728 B2 JP S6349728B2 JP 4867784 A JP4867784 A JP 4867784A JP 4867784 A JP4867784 A JP 4867784A JP S6349728 B2 JPS6349728 B2 JP S6349728B2
- Authority
- JP
- Japan
- Prior art keywords
- ore
- lump
- raw materials
- sintered
- raw material
- 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
Links
- 239000002994 raw material Substances 0.000 claims description 20
- 239000000843 powder Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 2
- 238000005245 sintering Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000009770 conventional sintering Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- Manufacture And Refinement Of Metals (AREA)
Description
【発明の詳細な説明】 本発明は焼結鉱の製造方法に関する。[Detailed description of the invention] The present invention relates to a method for producing sintered ore.
一般に、高炉、電気炉等において使用する原料
としては、塊鉱石、焼結鉱、ペレツト等が用いら
れている。 Generally, lump ore, sintered ore, pellets, etc. are used as raw materials for blast furnaces, electric furnaces, etc.
このうち、塊鉱石については、付着水分、結晶
水等として水分が若干含有されており、例えば、
電気炉にこのような塊鉱石を直接装入して合金鉄
を製造する場合に、塊鉱石に含まれている水分が
急激に蒸発し、分解するので電気エネルギーを余
分に消費することになつたり、また、高炉、電気
炉において棚落ちが起つた場合には炉吹きの原因
ともなり、炉が損傷したり、安全の上で大きな問
題となり、塊鉱石を高炉、電気炉に装入する場合
には厳重な注意が必要であつた。 Among these, lump ores contain some moisture as adhering moisture, crystallization water, etc., for example,
When such lump ore is directly charged into an electric furnace to produce ferroalloy, the moisture contained in the lump ore rapidly evaporates and decomposes, resulting in the consumption of extra electrical energy. In addition, if shelving occurs in a blast furnace or electric furnace, it may cause the furnace to blow out, causing damage to the furnace or causing a major safety problem. required extreme caution.
また、高炉、電気炉において装入する焼結鉱
は、主として連続下方通風方式、所謂、ドワイト
ロイド方式により鉱石を焼結するのであり、例え
ば、第１図に示すように、スプロケツトホイルに
より駆動移行する気体透過性のグレート１に、床
敷鉱ホツパー４より床敷鉱（10〜25mmの焼結鉱石
ｆ）Ａを供給してから、その上に、60mesh〜３
mmの通常の原料粉末、返鉱およびコークスブリー
ズを混合した配合原料Ｂ（粉鉱a28.9、粉鉱b38.7、
粉鉱c2.2、粉鉱d4.5、粉鉱e23.0、ブリーズ2.7＜
％＞）を配合原料ホツパー５からドラムフイーダ
ー２、スローピングプレート３により床敷鉱Ａ上
に供給して普通約300mm程度の厚さとし、点火炉
６で重油バーナー等により上層のコークスブリー
ズに点火し、グレート１下側から空気を吸引しな
がら配合原料Ｂ中に混在するブリーズを順次燃焼
さてることにより、グレート１の移行と相俟つて
水平方向に原料層の上から下へ焼結を行なうので
ある。 In addition, sintered ore charged into a blast furnace or an electric furnace is sintered mainly by a continuous downward draft method, the so-called Dwight Lloyd method. Bed ore (sintered ore f of 10 to 25 mm) A is supplied to the transitioning gas-permeable grate 1 from the bedding ore hopper 4, and then 60 mesh to 3
Mixed raw material B (fine ore a28.9, fine ore B38.7,
Powder ore c2.2, powder ore d4.5, powder ore e23.0, breeze 2.7＜
%>) is fed from the mixed raw material hopper 5 onto the bedding ore A through the drum feeder 2 and sloping plate 3 to a thickness of about 300 mm, and the coke breeze in the upper layer is ignited with a heavy oil burner in the ignition furnace 6. By sequentially burning the breeze mixed in the mixed raw material B while suctioning air from the bottom of the grade 1, sintering is performed horizontally from the top to the bottom of the raw material layer in conjunction with the transition of the grade 1. be.
本発明に係る焼結鉱の製造方法の特徴とすると
ころは、焼結鉱の製造に際し、通常の原料粉末、
返鉱およびブルーズよりなる配合原料の混合物
に、10〜60mmの粒度の塊鉱石を重量比で最高40％
まで混合した焼結原料を使用することにある。 The feature of the method for producing sintered ore according to the present invention is that when producing sintered ore, ordinary raw material powder,
Up to 40% by weight of lump ore with a particle size of 10 to 60 mm is added to the blended raw material mixture consisting of return ore and blues.
The purpose is to use sintering raw materials mixed up to
本発明に係る焼結鉱の製造方法について詳細に
説明する。 The method for producing sintered ore according to the present invention will be explained in detail.
即ち、本発明に係る焼結鉱の製造方法において
は、従来使用されている通常の原料（約10mmmm以
下の粒度）、返鉱（約５mm以下の粒度）およびコ
ークスブリーズの混合物に対して、10〜60mmの粒
度の塊鉱石を重量比で最高40％まで混合した配合
原料を焼結するのである。 That is, in the method for producing sintered ore according to the present invention, 10% The blended raw material is sintered by mixing up to 40% by weight of lump ore with a particle size of ~60mm.
この場合、塊鉱石の粒度を10〜60mmの範囲とす
るのは、10mm未満の粒度では他の配合原料の粒度
と同程度になつて、塊鉱石を混合する意味がなく
なり、また、60mmを越えるような大きな粒度では
供給ホツパーの出口での払出不能等のトラブル或
いは焼成不良となるためである。 In this case, the particle size of the lump ore should be in the range of 10 to 60 mm, because if the particle size is less than 10 mm, the particle size will be the same as that of other mixed raw materials, and there is no point in mixing the lump ore. This is because such a large particle size may cause problems such as inability to dispense at the outlet of the supply hopper or failure in firing.
また、塊鉱石を重量比で最高40％とするのは、
40％を越える重量比では塊鉱石のみの焼結と変ら
なくなり、粉鉱石を焼結するという焼結本来の目
的からはずれるからである。なお、重量比の下限
は粉鉱石だけの場合より通気度が良好な比率とな
るように、実際操業において適宜選択すればよ
い。 In addition, the maximum weight ratio of lump ore is 40%,
This is because if the weight ratio exceeds 40%, it becomes no different from sintering only lump ore, which deviates from the original purpose of sintering, which is to sinter fine ore. The lower limit of the weight ratio may be appropriately selected in actual operation so that the permeability is better than in the case of only fine ore.
次に、本発明に係る焼結鉱の製造方法を第２図
に示す例により具体的に説明する。 Next, the method for manufacturing sintered ore according to the present invention will be specifically explained using an example shown in FIG.
即ち、配合原料Ｂ（粉鉱a23.8、粉鉱b32.0、粉
鉱c1.8、粉鉱d3.7、粉鉱e19.1、ブリーズ2.7、塊
鉱石f16.9＜％＞）を、配合原料ホツパー５から
ドラムフイーダー２、スローピングプレート３に
よりグレート１上に供給し、点火炉６で配合原料
中のブリーズに点火し、グレード１の移動と共に
順次ブリーズが燃焼して焼結が進行していく。 That is, blended raw materials B (fine ore a 23.8, ore powder b 32.0, ore powder c 1.8, ore powder d 3.7, ore powder e 19.1, breeze 2.7, lump ore f 16.9 <%>), The blended raw materials are fed from the hopper 5 onto the grate 1 via the drum feeder 2 and the sloping plate 3, and the breeze in the blended raw materials is ignited in the ignition furnace 6. As the grade 1 moves, the breeze sequentially burns and sintering progresses. To go.
この場合には、グレート１上の配合原料は上層
が細かく、下層が粗くなるように配合原料を供給
し、そして、グレート１上の配合原料層を上層・
中層・下層とに分けると、塊鉱石ｆは上層に2.3
％、中層に12.9％、下層に84.8％の割合で分布し
ている。そして、焼結後においては、塊鉱石は下
層では焼結状態とはならず赤熱した塊鉱となり、
上層、中層では塊鉱石ｆが焼結鉱中に分散混入し
ていた。従つて、塊鉱石の付着水分は勿論のこと
結晶水を完全に除去でき、さらに、通気度も改善
されて生産性が約12％も向上した。 In this case, the blended raw materials on grade 1 are supplied so that the upper layer is fine and the lower layer is coarse, and the blended raw materials on grade 1 are supplied as the upper layer.
When divided into middle and lower layers, lump ore f is 2.3 in the upper layer.
%, 12.9% in the middle class and 84.8% in the lower class. After sintering, the lump ore does not become sintered in the lower layer, but becomes red-hot lump ore.
In the upper and middle layers, lump ore f was dispersed and mixed into the sintered ore. Therefore, not only moisture adhering to the lump ore but also crystallization water could be completely removed, and the permeability was also improved, resulting in an approximately 12% increase in productivity.
以上説明したように、本発明に係る焼結鉱の製
造方法は上記の構成を有しているものであるか
ら、塊鉱石の付着水分、結晶水がなくなり、電気
炉においては焼結鉱ホツトチヤージの割合が増加
し、溶解電力の消費が少なくなり、また、棚落ち
による炉吹きがなくなり、設備的には、床敷鉱供
給設備が不用となる等優れた効果を有するもので
ある。 As explained above, since the method for producing sintered ore according to the present invention has the above-mentioned configuration, moisture adhering to the lump ore and crystallization water are eliminated, and sintered ore hot charge is reduced in the electric furnace. The ratio increases, the consumption of melting power decreases, furnace blowing due to shelving is eliminated, and in terms of equipment, bedding ore supply equipment is no longer required, and other excellent effects are achieved.
第１図は従来の焼結法の説明図、第２図は本発
明に係る焼結鉱の製造方法の説明図である。
１……グレート、２……ドラムフイーダー、３
……スローピングプレート、４……床敷鉱ホツパ
ー、５……配合原料ホツパー、６……点火炉、Ａ
……床敷鉱、Ｂ……配合原料。
FIG. 1 is an explanatory diagram of a conventional sintering method, and FIG. 2 is an explanatory diagram of a method for producing sintered ore according to the present invention. 1...Great, 2...Drum feeder, 3
... Sloping plate, 4 ... Bed ore hopper, 5 ... Mixed raw material hopper, 6 ... Ignition furnace, A
... Bedstone ore, B... Mixed raw materials.
Claims (1)
末、返鉱およびブリーズよりなる配合原料の混合
物に、10〜60mmの粒度の塊鉱石を重量比で最高40
％まで混合した焼結原料を使用することを特徴と
する焼結鉱の製造方法。1. When producing sintered ore, lump ore with a particle size of 10 to 60 mm is added to a mixture of raw materials consisting of normal raw material powder, return ore, and breeze at a weight ratio of up to 40 mm.
A method for producing sintered ore, characterized by using sintered raw materials mixed up to %.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59048677A JPS60194023A (en) | 1984-03-14 | 1984-03-14 | Production of sintered ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59048677A JPS60194023A (en) | 1984-03-14 | 1984-03-14 | Production of sintered ore |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60194023A JPS60194023A (en) | 1985-10-02 |
| JPS6349728B2 true JPS6349728B2 (en) | 1988-10-05 |
Family
ID=12809948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59048677A Granted JPS60194023A (en) | 1984-03-14 | 1984-03-14 | Production of sintered ore |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60194023A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62248988A (en) * | 1986-04-21 | 1987-10-29 | 新日本製鐵株式会社 | Method of charging sintering raw material |
| CN106337118B (en) * | 2016-09-12 | 2018-02-27 | 鞍钢股份有限公司 | Composite batching method for ultra-thick material layer by adopting pre-sintering |
-
1984
- 1984-03-14 JP JP59048677A patent/JPS60194023A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60194023A (en) | 1985-10-02 |
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