JPS6379922A - Manufacture of briquetted ore - Google Patents
Manufacture of briquetted oreInfo
- Publication number
- JPS6379922A JPS6379922A JP14357286A JP14357286A JPS6379922A JP S6379922 A JPS6379922 A JP S6379922A JP 14357286 A JP14357286 A JP 14357286A JP 14357286 A JP14357286 A JP 14357286A JP S6379922 A JPS6379922 A JP S6379922A
- Authority
- JP
- Japan
- Prior art keywords
- balls
- green
- grained
- carbon material
- pelletizer
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 18
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims abstract description 4
- 239000002245 particle Substances 0.000 claims description 17
- 239000002994 raw material Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000003245 coal Substances 0.000 claims 1
- 239000008188 pellet Substances 0.000 abstract description 16
- 239000000203 mixture Substances 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 3
- 238000012216 screening Methods 0.000 abstract 1
- 239000007858 starting material Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- 239000000571 coke Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010304 firing Methods 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- 235000012255 calcium oxide Nutrition 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、原料の処理工程を改良した塊成鉱の製造方
法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for producing agglomerate ore in which the raw material treatment process is improved.
（従来技術）
塊成鉱原料の処理工程では、通常微粉原料を造粒してグ
リーンが一ルを得、このグリーンボールに粉状炭材を被
覆してペレットとしている。(Prior Art) In the process of processing agglomerate raw materials, a fine powder raw material is usually granulated to obtain a green ball, and this green ball is coated with powdered carbon material to form pellets.
従来の塊成鉱原料の処理工程では、上記グリーンボール
の粒度分布が大きくなると、大粒径のグリーンボールに
対して炭材被覆量が少なく、小粒径のそれ罠は炭材被覆
量が多くなる傾向がみられる（第２図参照）。大粒径ペ
レットはもともと、焼成時、小粒径のペレットに比較し
て、その芯まで熱が十分供給されにくい。更に大粒径ペ
レットは上述のように炭材量が不足している。このよう
な理由から大粒径ベレットは焼成不足が認められ、歩留
シが悪かった。In the conventional processing process of agglomerate raw materials, when the particle size distribution of the green balls becomes large, the amount of carbonaceous material covered is small for large-sized green balls, and the amount of carbonaceous material covered is large for small-sized green balls. (See Figure 2). It is originally difficult for large-sized pellets to receive enough heat to reach their cores during firing, compared to small-sized pellets. Furthermore, the large particle diameter pellets lack the amount of carbon material as described above. For these reasons, large-grain pellets were found to be insufficiently fired, resulting in poor yields.
これを解消するために、大粒径ペレットにあわせて炭材
を被覆すると、小粒径ペレットでは必要以上に炭材を被
覆することとなる。この結果小粒径ペレットでは焼成時
に供給熱量過剰となシ、得られる製品の還元性を悪化さ
せていた。In order to solve this problem, if the large particle size pellets are coated with carbon material, the small particle size pellets will be coated with more carbon material than necessary. As a result, in the case of small-sized pellets, an excessive amount of heat is supplied during firing, which deteriorates the reducibility of the resulting product.
（発明が解決しようとする技術的課題）木兄ＢＡは、上
記事情に鑑みてなされたもので。(Technical Problem to be Solved by the Invention) Kinoe BA was created in view of the above circumstances.
その目的とするところは、それぞれの粒径に応じて炭材
を被覆して、焼成不足を防ぎ、製品の還元性の悪化を防
ぐことができる塊成鉱の製造方法を得んとするものであ
る。The aim is to develop a method for producing agglomerate that can prevent insufficient calcination and prevent deterioration of the reducibility of the product by coating each particle with carbonaceous material according to its particle size. be.
（技術的課題を解決する手段）
本発明は、微粉原料を造粒して得られたグＩＪ−ンｙｙ
−ルを篩分ケし、グリーンボールの粒径に応じてそれぞ
れ粉状炭材量を設定して、グリーンが一部に炭材を被覆
する塊成鉱の製造方法である。(Means for Solving the Technical Problems) The present invention is directed to the production of particles obtained by granulating fine powder raw materials.
- This is a method for producing agglomerate ore in which the green balls are sieved and the amount of powdered carbon material is set depending on the particle size of the green balls, so that the green balls partially cover the carbon material.
（発明の詳細な説明）
第１図にもとづいて本発明の一実施例を説明する。ペレ
ット材１．焼結材２１石灰石３．生石灰４及び返鉱５を
水とともにミキサー６に入れ、混合する。混合物を水と
ともに第１ペレタイデ−７に入れてグリーンボール８を
作る。得られたグリーンボール８をローラースクリーン
９ ＶＣ導入シー’Ｃ１＋１５露、１５〜１０冨、 −
５ｍの粒径に分ける。(Detailed Description of the Invention) An embodiment of the present invention will be described based on FIG. Pellet material 1. Sintered material 21 limestone 3. Quicklime 4 and return ore 5 are put into a mixer 6 along with water and mixed. The mixture is added to the first pellet 7 with water to form a green ball 8. The obtained green ball 8 is passed through the roller screen 9.
Divide into 5m particle sizes.
＋１５電のグリーンピール８１を解砕機１θに入れて細
かくした後、上記第１ペレタイデ−７に戻す、また−５
ｍのグリーンボール８番はそのまま第１ペレタイデ−７
に戻す。一方１５〜Ｌｏｗのグリーンボール８２．５〜
１０ｍのグリーンカー〜ｋ １３ ｓ ハ、ソｈそし別
のコンベアスケール１ノ。After putting the +15 electric green peel 81 into the crusher 1θ and pulverizing it, it is returned to the above-mentioned first pelletizing day -7, and -5
M's green ball number 8 remains on the first pellet day-7.
Return to On the other hand, 15 ~ Low green ball 82.5 ~
10m green car~k13s Ha, soh and another conveyor scale 1no.
１２に送シ、ここで秤量後粗粒用にレタ゛イデ１３゜細
粒開被レタイデ１４に投入する。粉状炭材である微粉コ
ークス１５は、秤量後書ペレタイデ１３゜１４に所定量
投入し、各グリーンボール８２ 。At step 12, the particles are fed, and after being weighed, they are placed in a type 13 degree for coarse particles and a type 14 for opening and covering fine particles. After weighing, a predetermined amount of fine coke 15, which is a powdered carbonaceous material, is put into the pelletizers 13 and 14, and each green ball 82 is loaded.
８３に被覆する。被覆する炭材量は、グリーンが一部の
粒径に応じて調節され、例えば５〜１０ｍｍのグリーン
ボールには２．５〜３．５％、１５〜ｌ。83. The amount of carbon material to be coated is adjusted depending on the particle size of the green, for example, 2.5-3.5%, 15-1 for green balls of 5-10 mm.
調のグリーンボールには３．０〜４．５係被覆する（第
３図参照）。A green ball of 3.0 to 4.5 is coated (see Figure 3).
得られたくレット１６は、グレート式焼成炉１７に投入
して焼成し、焼成物を１次クラッシャ１８及び２次クラ
ッシャ１９にて砕き、スクリーン２０で篩分けして、５
〜５０閣の塊成鉱２ノを得る。なお−５ｍ＋のものは返
鉱５としてミキサー６に再投入され、５〜５０ｔｍのも
のの一部は、焼成炉１７上に設けたホラ・ｆ２２に投入
される。The obtained multiplets 16 are put into a grate-type firing furnace 17 and fired, and the fired product is crushed by a primary crusher 18 and a secondary crusher 19, and sieved by a screen 20.
~Obtain 2 pieces of agglomerate ore from 50 temples. The -5 m+ ore is re-injected into the mixer 6 as the return ore 5, and a part of the 5-50 tm is input into the hollow f22 provided on the kiln 17.
（発明の効果）
この発明によれば、粒径の違いに応じて炭材の被覆量を
調節しているので、各ペレットを的確に歩留良く焼成で
き、しかも得られた塊成鉱の品質を向上しうる。(Effects of the Invention) According to the present invention, since the amount of carbonaceous material coated is adjusted according to the difference in particle size, each pellet can be fired accurately and with a high yield, and the quality of the obtained agglomerate is can be improved.
（実施例）
次に第４図に本発明の操業例を従来例とともに示す。こ
の図から塊成鉱を歩留良く焼成でき、品質も向上してい
ることがわかる。(Example) Next, FIG. 4 shows an example of operation of the present invention together with a conventional example. This figure shows that the agglomerate ore can be fired with good yield and quality is improved.
第１図は本発明に係る塊成鉱の製造方法の操業例を示す
説明図、第２図はグリーンボール粒径と被覆コークス量
の関係を示す図、第３図はグリ−ンゴール８番と最適被
覆コークス量の関係を示す図、第４図は本発明の操業例
を従来例と比較して示す図である。
１・・・ペレット材、２・・・焼結材、３・・・石灰石
、４・・・生石灰、５・・・返鉱、６・・・ミキサー、
７・・・第１ペレタイデー、８１〜８４・・・グリーン
Ｉｋ、９・・・ローラースクリーン、１１．１２・・・
コンベアスケール、１３．１４・・・第３ペレタイデ、
１５・・・微粉コークス、１６・・・ベレット、１７・
・・ｍ成Ｐ、１ ｇ・・・１次クラッシャ、１９・・・
２次クラッシャ、２０・・・スクリーン、２ノ・・・塊
成鉱、２２・・・ホッパ。
出願人代理人 弁理士 鈴 江 武 彦６一
手続補正書坊式）
昭和 ６谷・１１・”−７４６Ｂ
特許庁長官 小 川 邦 夫 殿
１、事件の表示
特願昭６１−１’４３５７２号
２、発明の名称
塊成鉱の製造方法
３、補正をする者
事件との関係 特許出願人
（４１２） 日本鋼管株式会社
４、代理人
東京都千代田区霞が関３丁目７番２号 ＵＢＥビル昭和
６２年１０月２７日
７、補正の内容Fig. 1 is an explanatory diagram showing an example of operation of the method for producing agglomerate ore according to the present invention, Fig. 2 is a diagram showing the relationship between green ball particle size and amount of coated coke, and Fig. 3 is a diagram showing green ball No. FIG. 4, which is a diagram showing the relationship between the optimum amount of coke to be coated, is a diagram showing an operation example of the present invention in comparison with a conventional example. 1... Pellet material, 2... Sintered material, 3... Limestone, 4... Quicklime, 5... Return ore, 6... Mixer,
7...1st pellet tie day, 81-84...Green Ik, 9...Roller screen, 11.12...
Conveyor scale, 13.14...3rd pelletite,
15...Fine coke, 16...Bellet, 17.
・・M formation P, 1 g・・Primary crusher, 19・・・・
Secondary crusher, 20...Screen, 2nd...Agglomerate ore, 22...Hopper. Applicant's representative Patent attorney Takehiko Suzue 61st procedure amendment form) Showa 6/11/''-746B Commissioner of the Patent Office Kunio Ogawa 1, Patent Application No. 1988-1'43572 2, Name of the invention Method for producing agglomerated ore 3, Relationship with the case of the person making the amendment Patent applicant (412) Nippon Kokan Co., Ltd. 4 Agent UBE Building, 3-7-2 Kasumigaseki, Chiyoda-ku, Tokyo 1988 July 27th, 7th, Contents of amendment
Claims (1)
リーンボールに粉状炭材を被覆する工程において、上記
グリーンボールを篩分けして、グリーンボールの粒径に
応じて被覆炭材量を調節する塊成鉱の製造方法。 ２、グリーンボールを５〜１０ｍｍ及び１０〜１５ｍｍ
の粒径に篩分ける特許請求の範囲第１項記載の塊成鉱の
製造方法。 ３、５〜１０ｍｍの粒径のグリーンボールに粉状炭材を
２．５〜３．５％、１０〜１５ｍｍの粒径のグリーンボ
ールに粉状炭材を３．０〜４．５％被覆する特許請求の
範囲第２項記載の塊成鉱の製造方法。[Claims] 1. In the step of granulating fine powder raw materials to make green balls and coating the green balls with powdered carbonaceous material, the green balls are sieved and the green balls are sieved according to the particle size of the green balls. A method for producing agglomerate ore that adjusts the amount of coated coal material. 2. Green ball 5-10mm and 10-15mm
A method for producing agglomerated ore according to claim 1, wherein the agglomerated ore is sieved to a particle size of . 3. Green balls with a particle size of 5 to 10 mm are coated with 2.5 to 3.5% of powdered carbonaceous material, and green balls with a particle size of 10 to 15 mm are coated with 3.0 to 4.5% of powdered carbonaceous material. A method for producing agglomerated ore according to claim 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14357286A JPS6379922A (en) | 1986-06-19 | 1986-06-19 | Manufacture of briquetted ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14357286A JPS6379922A (en) | 1986-06-19 | 1986-06-19 | Manufacture of briquetted ore |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6379922A true JPS6379922A (en) | 1988-04-09 |
| JPH041049B2 JPH041049B2 (en) | 1992-01-09 |
Family
ID=15341865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14357286A Granted JPS6379922A (en) | 1986-06-19 | 1986-06-19 | Manufacture of briquetted ore |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6379922A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0578253A1 (en) * | 1986-12-15 | 1994-01-12 | Nippon Kokan Kabushiki Kaisha | Method for manufacturing agglomerates of fired pellets |
-
1986
- 1986-06-19 JP JP14357286A patent/JPS6379922A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0578253A1 (en) * | 1986-12-15 | 1994-01-12 | Nippon Kokan Kabushiki Kaisha | Method for manufacturing agglomerates of fired pellets |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH041049B2 (en) | 1992-01-09 |
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