JPS6240325A - Manufacture of binder - Google Patents
Manufacture of binderInfo
- Publication number
- JPS6240325A JPS6240325A JP60180691A JP18069185A JPS6240325A JP S6240325 A JPS6240325 A JP S6240325A JP 60180691 A JP60180691 A JP 60180691A JP 18069185 A JP18069185 A JP 18069185A JP S6240325 A JPS6240325 A JP S6240325A
- Authority
- JP
- Japan
- Prior art keywords
- slag
- blast furnace
- binder
- cao
- molten state
- 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.)
- Pending
Links
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)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、高炉に装入して用いる焼結鉱を製造する場合
に用いるバインダーに関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a binder used in producing sintered ore which is charged into a blast furnace.
〈従来の技術〉
現在行なわれている焼結法は、約１０ｍ以下の鉄鉱石粉
末に、コークス及び適量の石灰石粉末とを混合し、焼結
パレットに装入後表層部のコークスに点火し、下方向へ
空気を吸引し乍らコークスを燃焼させ、その燃焼熱で粉
鉱石を焼結させる方法である。<Prior art> The currently used sintering method involves mixing iron ore powder of approximately 10 m or less with coke and an appropriate amount of limestone powder, charging it into a sintering pallet, and then igniting the coke in the surface layer. In this method, coke is combusted while air is sucked downward, and the ore powder is sintered using the combustion heat.
この様に、コークスの燃焼により焼結が進行する為に焼
結層への空気の供給度合いを決定する焼結層の通気性の
程度は、操業上の重要な要因となる。この通気性を向上
させる為に造粒条件の改善や造粒時間の延長等積々の方
策が講じられているが、用いるバインダーも大きな要因
である。従来からこの種の焼結に用いられているバイン
ダーは、生石灰や急結セメント成分である。As described above, since sintering progresses through the combustion of coke, the degree of permeability of the sintered layer, which determines the degree of air supply to the sintered layer, is an important operational factor. In order to improve this air permeability, a number of measures have been taken, such as improving granulation conditions and extending granulation time, but the binder used is also a major factor. Binders conventionally used in this type of sintering are quicklime and quick-setting cement components.
〈発明が解決しようとする問題点〉
上述した焼結用バインダーとして用いられている生石灰
や急結セメント成分は、効果はあるものの高価である為
にコスト高となる問題がある。<Problems to be Solved by the Invention> Although the quicklime and quick-setting cement components used as the sintering binder described above are effective, they are expensive, resulting in a problem of high costs.
本発明者は先に、安価な焼結用バインダーとして製鋼ス
ラグを用いる発明をなし特願昭６０−８４１４８号とし
て出願済みであるが、製鋼スラグの他に高炉水滓を利用
する。高炉水滓は高炉セメント用混和剤として利用され
るが完全に消化されるに至ってないので有効活用する。The present inventor has previously developed an invention using steelmaking slag as an inexpensive sintering binder, which has been filed as Japanese Patent Application No. 60-84148, and blast furnace water slag is utilized in addition to steelmaking slag. Blast furnace water slag is used as an admixture for blast furnace cement, but since it has not been completely digested, it should be used effectively.
〈問題点を解決する為の手段〉
本発明は従来から焼結用バインダーとして使用されてい
る生石灰や急結セメントに替え、安価な高炉水滓を用い
ようとするものであり、その要旨は高炉水滓と、溶融状
態から急冷処理した製鋼スラグとＣａＳＯ４４１１２０
，Ｃａｂ、 Ｃａ（Ｏｆｆ）２．ＣａＣｌ２． Ｎａ０
１−１゜Ｎａ２ＣＯａの少なくとも１種以上から成る刺
激剤との混合粉末から成る焼結用バインダーであり、こ
の場合に用いる製鋼スラグを溶融状態にある間に珪酸塩
質の岩石あるいは鉱物又はその風化物、カラミ、ガラス
クズ、鋳物廃砂１石炭灰、灰レンガ。<Means for solving the problems> The present invention attempts to use inexpensive blast furnace water slag in place of quicklime and quick-setting cement, which have been conventionally used as binders for sintering. Water slag, steelmaking slag that has been rapidly cooled from the molten state, and CaSO441120
, Cab, Ca(Off)2. CaCl2. Na0
1-1゜It is a sintering binder consisting of a mixed powder with a stimulant consisting of at least one kind of Na2COa, and it is a sintering binder that is made of a silicate rock or mineral or its weathering while the steelmaking slag used in this case is in a molten state. materials, karami, glass scraps, foundry waste sand, 1 coal ash, ash bricks.
赤泥、火山噴出物、高炉スラグ、脱珪スラグ、酸化鉄の
少なくとも１種以上から成る改質材を添加し溶融反応を
させた後に急冷した生成物の形態で用いることもあり、
更には製鋼スラグに替えセメントを用いる事もある。It may also be used in the form of a product that is rapidly cooled after adding a modifying material consisting of at least one of red mud, volcanic ejecta, blast furnace slag, desiliconization slag, and iron oxide and causing a melting reaction.
Furthermore, cement may be used instead of steelmaking slag.
この様に溶融状態の製鋼スラグに対し、珪酸塩質の岩石
等の改質材を添加するのは、製鋼スラグの鉱物組成を、
α′〜β−２ＣａＯ−Ｓｉ０２主体から、２ＣａＯ・５
ｉ０２〜２ＣａＯ・Ｈｇ０−２ＳｉＯ２主体となし崩壊
膨張性を無くすと共に、融点、粘性を低下させる事によ
りその取扱を便ならしめ、かつ急冷した場合の急冷率を
向上させガラス質を多くぜんとする為であり、その添加
方法は別に限定される事なく、作業工程あるいは作業現
場の状況に応じ適宜の方法を採用する。Adding modifying materials such as silicate rocks to molten steelmaking slag in this way improves the mineral composition of steelmaking slag.
From α′ to β-2CaO-Si02, 2CaO・5
i02-2CaO・Hg0-2SiO2 is mainly used to eliminate collapsing-expanding property, to make handling easier by lowering the melting point and viscosity, and to improve the quenching rate when quenching to sharpen a large amount of glass. The method of addition is not particularly limited, and an appropriate method is adopted depending on the work process or the situation at the work site.
〈実施例及び作用〉 以下実施例を示し乍ら、本発明を詳述する。<Examples and effects> The present invention will be described in detail below with reference to Examples.
この実施例に用いた試料の化学分析値等を下記第１表に
示す。Chemical analysis values of the samples used in this example are shown in Table 1 below.
なお、生石灰、消石灰、Ｎａ０１１． ｔＪａ２ｃＯ３
，ＣａＣ１，等は試薬−級を、セメントは市販ポルトラ
ンドセメントを使用した。更に高炉水滓は市販品を使用
した。In addition, quicklime, slaked lime, Na011. tJa2cO3
, CaC1, etc. were reagent grade, and the cement used was commercially available Portland cement. Furthermore, a commercially available blast furnace water slag was used.
上記第１表中改質還元期スラグ及び改質転炉スラグとい
うのは、それぞれ還元期スラグ及び転炉スラグに対し、
上述の改質材を約１０１！！量％添加したスラグの事で
ある。The reforming reduction stage slag and reforming converter slag in Table 1 above refer to the reduction stage slag and converter slag, respectively.
Approximately 101 of the above-mentioned modifying materials! ! This refers to slag that has been added in an amount of %.
高炉水滓、ｉｉｔ＊水滓、刺激剤（Ｃａｂ、 Ｃａ（Ｏ
ｌｌ）２）を添加後、試験ボールミルでブレーン値３１
００±５０Ｃｆｆ１２／ｇに粉砕、又は高炉水滓、刺激
剤（ＣａＯ，Ｃａ（ＯＨ）２）を添加後、試験ボールミ
ルでブレーン値３１００±５０Ｃｍ２／ｇに粉砕後、市
販ポルトランドセメントを添加混合あるいは刺激剤の中
のＣａｂ、 Ｃａ（Ｏｔｌ）２以外のＮａＯＨ，ＣａＣ
ｌ２． Ｎａ２ＣＯ３等を添加する場合は練り水に溶解
して使用し、水に加えて混練しビニール袋に入れて硬化
状況を調べ、第２表に示す。Blast furnace water slag, iit* water slag, stimulant (Cab, Ca(O
ll) After addition of 2), the Blaine value was 31 in the test ball mill.
After grinding to 00±50Cff12/g, or adding blast furnace water slag and stimulants (CaO, Ca(OH)2), grinding to a Blaine value of 3100±50Cm2/g in a test ball mill, add commercially available Portland cement and mix or stimulate. Cab in the agent, NaOH, CaC other than Ca(Otl)2
l2. When adding Na2CO3, etc., it is used by dissolving it in kneading water, adding it to water, kneading it, putting it in a plastic bag, and checking the hardening status, which is shown in Table 2.
次に第３表に示す様な、配合割合及び条件で、本発明の
バインダーを用いて焼結した結果を第４表に示す。なお
この第４表中「試験ＮｏＪは上記第２表に示す試験Ｎｏ
と同じである。Next, Table 4 shows the results of sintering using the binder of the present invention under the mixing ratio and conditions shown in Table 3. In this Table 4, "Test No. J" is the test No. shown in Table 2 above.
is the same as
比較の為に従来例として生石灰をバインダーとした場合
及びバインダーなしの場合の結果をも第４表中に併記し
た。なお、バインダーの量は本発明の場合も従来例の場
合も共に１重量％とした。For comparison, Table 4 also shows the results when quicklime was used as a binder and when no binder was used as a conventional example. The amount of binder was 1% by weight in both the present invention and the conventional example.
第３表
第４表
上記第４表から明らかな様に、本発明のバインダーを用
いた焼結製品は、その生産性２歩留及び強度のいずれに
於てもバインダーなしの場合よりも優れており、生石灰
を用いた場合と比べて何ら遜色のない事が判る。Table 3 Table 4 As is clear from Table 4 above, the sintered products using the binder of the present invention are superior to those without the binder in both productivity, yield, and strength. It can be seen that there is no inferiority compared to the case of using quicklime.
〈発明の効果〉
以上述べてきた如く、本説明によれば安価な高炉水滓、
製鋼スラグやセメントと少量の刺激剤を使用することで
、高価な生石灰や急結セメントに替わる焼結用バインダ
ーとする事が出来るものであり、その場合の焼結製品へ
の効果は従来の高価な生石灰と同等である。更に製鉄業
の副産物である高炉スラグや製鋼スラグのリサイクルと
いう点からも有益である。<Effects of the invention> As stated above, according to this explanation, inexpensive blast furnace water slag,
By using steelmaking slag, cement, and a small amount of stimulant, it can be used as a sintering binder that replaces expensive quicklime and quick-setting cement. It is equivalent to quicklime. Furthermore, it is beneficial from the perspective of recycling blast furnace slag and steelmaking slag, which are byproducts of the steel industry.
Claims (1)
と、ＣａＳＯ＿４・２Ｈ＿２Ｏ、ＣａＯ、Ｃａ（ＯＨ）
＿２、ＣａＣｌ＿２、ＮａＯＨ、Ｎａ＿２ＣＯ＿３の少
なくとも１種以上から成る刺激剤との混合粉末から成る
焼結用バインダーの製造方法。 ２、高炉水滓と、溶融状態の製鋼スラグに珪酸塩質の岩
石あるいは鉱物又はその風化物、カラミ、ガラスクズ、
鋳物廃砂、石炭灰、廃レンガ、赤泥、火山噴出物、高炉
スラグ、脱珪スラグ、酸化鉄の少なくとも１種以上から
成る改質材を添加し溶融反応をさせた後急冷して得られ
た生成物と、ＣａＳＯ＿４・２Ｈ＿２Ｏ、ＣａＯ、Ｃａ
（ＯＨ）＿２、ＣａＣｌ＿２、ＮａＯＨ、Ｎａ＿２ＣＯ
＿３の少なくとも１種以上から成る刺激剤との混合粉末
から成る焼結用バインダーの製造方法。 ３、高炉水滓と、セメントと、ＣａＳＯ＿４・２Ｈ＿２
Ｏ、ＣａＯ、Ｃａ（ＯＨ）＿２、ＣａＣｌ＿２、ＮａＯ
Ｈ、Ｎａ＿２ＣＯ＿３の少なくとも１種以上から成る刺
激剤との混合粉末から成る焼結用バインダーの製造方法
。[Claims] 1. Blast furnace water slag, steelmaking slag that has been rapidly cooled from a molten state, CaSO_4・2H_2O, CaO, Ca(OH)
_2, a method for producing a sintering binder comprising a mixed powder with a stimulant consisting of at least one of CaCl_2, NaOH, and Na_2CO_3. 2. Blast furnace water slag, molten steelmaking slag, silicate rocks or minerals or their weathered products, karami, glass waste,
It is obtained by adding a modifying material consisting of at least one of foundry waste sand, coal ash, waste bricks, red mud, volcanic ejecta, blast furnace slag, desiliconization slag, and iron oxide, causing a melting reaction, and then rapidly cooling. and CaSO_4・2H_2O, CaO, Ca
(OH)_2, CaCl_2, NaOH, Na_2CO
A method for producing a sintering binder comprising a mixed powder with a stimulant comprising at least one of _3. 3. Blast furnace slag, cement, and CaSO_4・2H_2
O, CaO, Ca(OH)_2, CaCl_2, NaO
A method for producing a sintering binder comprising a mixed powder with a stimulant consisting of at least one of H, Na_2CO_3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60180691A JPS6240325A (en) | 1985-08-16 | 1985-08-16 | Manufacture of binder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60180691A JPS6240325A (en) | 1985-08-16 | 1985-08-16 | Manufacture of binder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6240325A true JPS6240325A (en) | 1987-02-21 |
Family
ID=16087619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60180691A Pending JPS6240325A (en) | 1985-08-16 | 1985-08-16 | Manufacture of binder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6240325A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103468940A (en) * | 2013-09-06 | 2013-12-25 | 鞍钢股份有限公司 | Cold-pressing iron coke composite pellet adhesive and preparation method thereof |
| CN113122711A (en) * | 2021-04-07 | 2021-07-16 | 中南大学 | Method for preparing solid organic/inorganic composite binder by using steel oily sludge, binder and application |
-
1985
- 1985-08-16 JP JP60180691A patent/JPS6240325A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103468940A (en) * | 2013-09-06 | 2013-12-25 | 鞍钢股份有限公司 | Cold-pressing iron coke composite pellet adhesive and preparation method thereof |
| CN113122711A (en) * | 2021-04-07 | 2021-07-16 | 中南大学 | Method for preparing solid organic/inorganic composite binder by using steel oily sludge, binder and application |
| CN113122711B (en) * | 2021-04-07 | 2022-04-01 | 中南大学 | Method for preparing solid organic/inorganic composite binder by using steel oily sludge, binder and application |
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