JPH07100829B2 - Granulation method of sintered raw material - Google Patents
Granulation method of sintered raw materialInfo
- Publication number
- JPH07100829B2 JPH07100829B2 JP18507390A JP18507390A JPH07100829B2 JP H07100829 B2 JPH07100829 B2 JP H07100829B2 JP 18507390 A JP18507390 A JP 18507390A JP 18507390 A JP18507390 A JP 18507390A JP H07100829 B2 JPH07100829 B2 JP H07100829B2
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- powder
- quick lime
- steel
- particle size
- 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 - Lifetime
Links
- 239000002994 raw material Substances 0.000 title claims description 24
- 238000000034 method Methods 0.000 title claims description 13
- 238000005469 granulation Methods 0.000 title claims description 11
- 230000003179 granulation Effects 0.000 title claims description 11
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 54
- 239000000292 calcium oxide Substances 0.000 claims description 27
- 235000012255 calcium oxide Nutrition 0.000 claims description 27
- 238000005245 sintering Methods 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 239000011230 binding agent Substances 0.000 claims description 8
- 239000000843 powder Substances 0.000 description 20
- 239000008188 pellet Substances 0.000 description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 239000002245 particle Substances 0.000 description 13
- 238000002156 mixing Methods 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000008187 granular material Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000009628 steelmaking Methods 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】 ［産業上の利用分野］ この発明は、焼結原料を造粒して得られる生ペレットの
粒径の増加および強度の増加が得られる焼結原料の造粒
方法に関するものである。TECHNICAL FIELD The present invention relates to a granulation method of a sintering raw material which can increase the grain size and strength of a raw pellet obtained by granulating a sintering raw material. It is a thing.
［従来の技術］ 高炉用新塊成鉱の焼結原料は、ペレット原料を40％以上
含む鉄鉱石粉、蛇紋岩、および塊成鉱製造過程で発生す
る返鉱であり、これにバインダーを添加し、水を添加し
ながら混合し、混合物をディスクペレタイザーで造粒す
る。また、通常焼結鉱の焼結原料は、鉄鉱石粉、石灰石
粉、粉コークスおよび焼結鉱製造過程で発生する返鉱で
あり、これに水を添加しながら（またはバインダーを添
加し、水を添加しながら）混合し、混合物をドラムペレ
タイザーで造粒する。造粒性向上のために、焼結原料に
添加するバインダーとしては、第３版鉄鋼便覧II製銑・
製鋼（日本鉄鋼協会編、丸善（株）S.57.12.25発行）の
86ページに記載されているように、生石灰、ベントナイ
ト、セメントやセメントクリンカ粉が使用されている。
また、公開されている特許文献としては、パルプ廃液を
使用するもの（特開昭59−59840号公報）や消石灰、生
石灰を使用するもの（特公昭64−36536号公報）があ
る。[Prior Art] Sintering raw material of new agglomerated ore for blast furnace is iron ore powder containing 40% or more of pellet raw material, serpentine, and return ore generated during agglomerated ore production process, to which binder is added. , Add water, mix and granulate the mixture with a disc pelletizer. In addition, the sintering raw material of the sinter is usually iron ore powder, limestone powder, coke powder and return ore generated in the process of producing sinter, while adding water (or adding a binder, water Mix (while adding) and granulate the mixture in a drum pelletizer. As a binder to be added to the sintering raw material in order to improve the granulation property, the 3rd edition Iron and Steel Handbook II
Steelmaking (edited by Japan Iron and Steel Institute, published by Maruzen S.57.12.25)
As described on page 86, quicklime, bentonite, cement and cement clinker powder are used.
Further, as the published patent documents, there are one using pulp waste liquid (Japanese Patent Laid-Open No. 59-59840) and one using slaked lime and quick lime (Japanese Patent Publication No. 64-36536).
［発明が解決しようとする課題］ 生石灰は、造粒性がよく、バインダーとして一般的に使
用されているが、価格が高価であるという問題点があ
る。第２図の折れ線グラフｂは、ペレット原料15％を含
む新塊成鉱原料に添加する生石灰の配合％を増加してい
ったときの造粒物の粒径の変化を示したものである。生
石灰の配合による造粒物（生ペレット）の粒径増加量は
1.5mmが最大で、生石灰配合増による粒径増加量には限
界があることが分かる。[Problems to be Solved by the Invention] Quick lime has good granulation property and is generally used as a binder, but it has a problem that the price is expensive. The line graph b in FIG. 2 shows the change in particle size of the granulated product when the blending percentage of the quicklime added to the new agglomerated ore raw material containing 15% of the pellet raw material is increased. The amount of increase in particle size of granulated product (green pellet) due to the mixing of quick lime is
The maximum value is 1.5 mm, and it can be seen that there is a limit to the amount of increase in particle size due to an increase in the amount of quicklime added.
本発明は高価な生石灰の配合％を少なくして、生石灰の
単味配合以上の粒径増加が可能な造粒方法を提供するこ
とを目的とする。It is an object of the present invention to provide a granulation method capable of increasing the particle size more than the simple blending of quick lime by reducing the blending percentage of expensive quick lime.
［課題を解決するための手段］ 本発明は上記のような目的を達成しようとするもので、
焼結原料にバインダーを添加して造粒する焼結原料の造
粒方法において、焼結原料に生石灰および微小な鋼屑を
添加して造粒することを特徴とする焼結原料の造粒方法
である。[Means for Solving the Problems] The present invention is intended to achieve the above object,
A granulating method of a sintering raw material, which comprises adding a binder to a sintering raw material, and granulating the sintering raw material by adding quick lime and minute steel scrap to the granulation method. Is.
［作用］ 焼結原料に生石灰および微小な鋼屑を添加して造粒する
ことにより、生石灰を単味配合して造粒する場合に比較
して、造粒物の粒径増加量が大きくなり、また、造粒物
（生ペレット）の落下強度の増加量も大きくなる。[Operation] By adding quick lime and minute steel scrap to the sintering raw material and granulating, the amount of increase in the particle size of the granulated product becomes larger than that in the case of simply mixing quick lime and granulating. Also, the amount of increase in the drop strength of the granulated product (green pellet) becomes large.
［実施例］ 本発明の実施例を以下に詳細に説明する。第２図はペレ
ット原料15％を含む焼結原料に添加するバインダーの配
合％（重量）を増加していったときの造粒物（生ペレッ
ト）の粒径の変化を示したグラフである。図において、
折れ線グラフｂは、生石灰の配合％を増加していったと
きの造粒物の粒径の変化を示したもので、折れ線グラフ
ａは生石灰の配合％を１％と一定にし、鋼ダライ粉の配
合％を増加していったときの造粒物の粒径の変化を示し
たものである。鋼ダライ粉は、厚さ0.5mm以下、巾0.5mm
以下、長さ15mm以下に調製した鋼材の切削または研削屑
を使用した。図から、生石灰単味配合（折れ線グラフ
ｂ）の場合、造粒物の最大粒径は3mmであるが、生石灰
１％（一定）と鋼ダライ粉を配合（折れ線グラフａ）し
た場合は、造粒物の最大粒径が5mmとなり、生石灰とダ
ライ粉を配合すると、生石灰単味配合の場合より粒径が
2mm大きい造粒物が得られることが分かる。第３図はペ
レット原料15％を含む焼結原料に添加するバインダーの
配合％（重量）を増加していったときの造粒物（生ペレ
ット）の落下強度の変化を示したグラフである。折れ線
グラフａおよびｂの意味する内容と使用した鋼ダライ粉
は、第２図の場合と同様である。ここに、落下強度と
は、造粒して得られた生ペレット10個を鉄板の上に落と
して、生ペレットが破壊するまでの平均回数である。図
から、生石灰単味配合（折れ線グラフｂ）の場合、生ペ
レットの最大落下強度は４回であるが、生石灰１％（一
定）とダライ粉を配合（折れ線グラフａ）した場合は、
生ペレットの最大落下強度は11回となり、生石灰とダラ
イ粉を配合すると、生石灰単味配合の場合より落下強度
が７回増加することが分かる。[Examples] Examples of the present invention will be described in detail below. FIG. 2 is a graph showing changes in the particle size of the granulated product (raw pellet) when the blending percentage (weight) of the binder added to the sintering raw material containing 15% of the pellet raw material was increased. In the figure,
The line graph b shows the change in the particle size of the granulated product when the blending percentage of quicklime is increased, and the line graph a shows that the blending percentage of quicklime is kept constant at 1%, and that of the steel doray powder It shows the change in particle size of the granulated product when the compounding percentage was increased. Steel Dalai powder has a thickness of 0.5 mm or less and a width of 0.5 mm
In the following, cutting or grinding waste of steel material prepared to have a length of 15 mm or less was used. From the figure, in the case of quick lime plain blend (line graph b), the maximum particle size of the granulated product is 3 mm, but when quick lime 1% (constant) and steel Daray powder are blended (line graph a), The maximum particle size of the granules becomes 5 mm, and when quicklime and Dalai powder are mixed, the particle size is smaller than in the case of quicklime simple mixture.
It can be seen that granules larger by 2 mm can be obtained. FIG. 3 is a graph showing the change in drop strength of the granulated product (raw pellet) when the blending percentage (weight) of the binder added to the sintering raw material containing 15% of the pellet raw material was increased. The meanings of the line graphs a and b and the used steel Dalai powder are the same as in the case of FIG. Here, the drop strength is the average number of times until 10 raw pellets obtained by granulation are dropped on an iron plate and the raw pellets are destroyed. From the figure, in the case of the quick lime plain mixture (line graph b), the maximum drop strength of the green pellet is 4 times, but when the quick lime 1% (constant) and Dalai powder are mixed (line graph a),
The maximum drop strength of green pellets is 11 times, and it can be seen that when quicklime and Darai powder are blended, the drop strength is increased 7 times compared to the case of quicklime plain blend.
次に、鋼ダライ粉の添加方法を新塊成鉱の場合について
説明する。第１図は新塊成鉱の製造工程図である。貯槽
１から所定の割合で切り出されたペレット原料、鉄鉱石
粉、蛇紋岩、返鉱および生石灰は、水を添加しながらド
ラムミキサー２で混合される。混合された原料はディス
クペレタイザー３に投入され、水を添加されながら造粒
され生ペレットとなる。生ペレットはドラムミキサー５
に投入され、その表面は貯槽４から切り出された粉コー
クスで被覆される。粉コークスで被覆された生ペレット
は、無端グレート移動式焼結機６に装入され、焼結され
る。以上のような工程において、鋼ダライ粉は、貯槽１
〜ドラムミキサー２の間またはドラムミキサー２〜ディ
スクペレタイザー３の間のコンベヤベルト上に添加され
る。なお、鋼ダライ粉をベッデイングヤードでペレット
原料または鉄鉱石粉のパイル中に積み込むこともでき
る。Next, the method of adding the steel Dalai powder will be described for the case of new agglomerated ore. Fig. 1 is a process drawing of the new agglomerated ore. The pellet raw material, iron ore powder, serpentine, return ore and quicklime cut out from the storage tank 1 at a predetermined ratio are mixed in the drum mixer 2 while adding water. The mixed raw materials are put into the disc pelletizer 3 and granulated while adding water to obtain raw pellets. Drum mixer 5 for raw pellets
, And the surface thereof is covered with the powder coke cut out from the storage tank 4. The raw pellets coated with the powder coke are loaded into the endless grate moving type sintering machine 6 and sintered. In the above process, the steel Dalai powder is stored in the storage tank 1
Is added on the conveyor belt between the drum mixer 2 or between the drum mixer 2 and the disc pelletizer 3. It is also possible to load the steel Dalai powder into a pellet raw material or a pile of iron ore powder in a bed yard.
［発明の効果］ 本発明は以上のように構成されているから、従来のバイ
ンダー添加の造粒方法よりも、粒径が大きく且つ、強度
の大きい造粒物が得られ、生産率の向上または主ブロワ
ーの電力節減が計れるという効果が得られる。[Advantages of the Invention] Since the present invention is configured as described above, a granulated product having a larger particle size and a higher strength can be obtained than in the conventional binder-added granulation method to improve the production rate or This has the effect of saving power in the main blower.
第１図は新塊成鉱の製造工程図、第２図は生石灰添加と
生石灰および鋼ダライ粉添加の造粒物粒径の比較を示す
グラフ図、第３図は生石灰添加と生石灰および鋼ダライ
粉添加の落下強度の比較を示すグラフ図である。 １……貯槽、２……ドラムミキサー、３……ディスクペ
レタイザー。Fig. 1 is a process chart for the production of new agglomerated ore, Fig. 2 is a graph showing the comparison of the particle size of the granulated product with the addition of quick lime and quick lime and steel dali powder, and Fig. 3 is the addition of quick lime and the quick lime and steel dalai. It is a graph which shows the comparison of the drop strength of powder addition. 1 ... Storage tank, 2 ... Drum mixer, 3 ... Disc pelletizer.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 古川 浩樹 東京都千代田区丸の内１丁目１番２号 日 本鋼管株式会社内 審査官 中村 朝幸 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroki Furukawa 1-2-1 Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. Asayuki Nakamura Examiner
Claims (1)
焼結原料の造粒方法において、焼結原料に生石灰および
微小な鋼屑を添加して造粒することを特徴とする焼結原
料の造粒方法。1. A method for granulating a sintering raw material, which comprises adding a binder to a sintering raw material for granulation, wherein quick lime and minute steel scrap are added to the sintering raw material for granulation. Granulation method of raw materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18507390A JPH07100829B2 (en) | 1990-07-12 | 1990-07-12 | Granulation method of sintered raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18507390A JPH07100829B2 (en) | 1990-07-12 | 1990-07-12 | Granulation method of sintered raw material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0474827A JPH0474827A (en) | 1992-03-10 |
| JPH07100829B2 true JPH07100829B2 (en) | 1995-11-01 |
Family
ID=16164342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18507390A Expired - Lifetime JPH07100829B2 (en) | 1990-07-12 | 1990-07-12 | Granulation method of sintered raw material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07100829B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104334756A (en) * | 2012-05-24 | 2015-02-04 | 杰富意钢铁株式会社 | Method for producing granulated raw material for sintering, production device thereof, and method for producing sintered ore for blast furnace |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839280B (en) * | 2012-08-27 | 2014-05-28 | 中南大学 | Selective distribution and granulation method of fuel for enhancing iron ore sintering with biomass energy |
| CN107604158A (en) * | 2017-09-25 | 2018-01-19 | 宝鸡市永盛泰钛业有限公司 | A kind of smelting process of titanium slag |
-
1990
- 1990-07-12 JP JP18507390A patent/JPH07100829B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104334756A (en) * | 2012-05-24 | 2015-02-04 | 杰富意钢铁株式会社 | Method for producing granulated raw material for sintering, production device thereof, and method for producing sintered ore for blast furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0474827A (en) | 1992-03-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100465306C (en) | Sintered ore capable of improving viscosity of blast furnace slag and process for preparing same | |
| CN1045111C (en) | Method for making quicklime iron concentrate briquette agglomerate | |
| JP2003342646A (en) | Unsintered carbon agglomerate for blast furnace and method for producing the same | |
| JPH07100829B2 (en) | Granulation method of sintered raw material | |
| JP4786022B2 (en) | Method for producing sintered ore | |
| US12247265B2 (en) | Solid agglomerated product based on iron oxides and corresponding production method | |
| JP2009019224A (en) | Method for producing sintered ore | |
| JPH1112624A (en) | Forming method of reduced iron production raw material | |
| JP3058015B2 (en) | Granulation method of sintering raw material | |
| JPH0742519B2 (en) | Pretreatment method for raw material for blast furnace | |
| JP4781807B2 (en) | Manufacturing method of dephosphorizing agent for steel making using sintering machine | |
| JPH0971824A (en) | Method for producing unfired agglomerate | |
| JP2011006722A (en) | Method for producing sintered ore | |
| JP7628842B2 (en) | Granulated material, steelmaking method, and method for producing granulated material | |
| JPH04210433A (en) | Method for pelletizing coke breeze and anthracite and manufacture of sintered ore | |
| JPS5817813B2 (en) | A method to improve productivity in the production of sintered ore using fine iron ore | |
| RU2829748C1 (en) | Solid agglomerated product based on iron oxides and method for production thereof | |
| JP2711587B2 (en) | Unfired agglomerate production method | |
| JPS6221055B2 (en) | ||
| JP3163455B2 (en) | Granulation method of coarse and fine mixed powder granules and method for producing sintered ore | |
| WO2003062477A2 (en) | Iron ore macropellets and a process for producing them | |
| JP2003013148A (en) | Method for producing sintered ore | |
| JP2711588B2 (en) | Unfired agglomerate production method | |
| JP6885386B2 (en) | Manufacturing method of carbon material interior particles and manufacturing method of carbon material interior sintered ore | |
| JPH05239560A (en) | Manufacture of sintered ore |