JPH08337448A - Cement manufacturing method and granulated powder manufacturing method - Google Patents
Cement manufacturing method and granulated powder manufacturing methodInfo
- Publication number
- JPH08337448A JPH08337448A JP7170385A JP17038595A JPH08337448A JP H08337448 A JPH08337448 A JP H08337448A JP 7170385 A JP7170385 A JP 7170385A JP 17038595 A JP17038595 A JP 17038595A JP H08337448 A JPH08337448 A JP H08337448A
- Authority
- JP
- Japan
- Prior art keywords
- slag
- blast furnace
- cement
- granulated
- mixed
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B5/00—Treatment of metallurgical slag ; Artificial stone from molten metallurgical slag
- C04B5/06—Ingredients, other than water, added to the molten slag or to the granulating medium or before remelting; Treatment with gases or gas generating compounds, e.g. to obtain porous slag
-
- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
(57)【要約】
【目的】 高炉スラグの塩基度を向上させること、更に
はその成分調整材として、従来セメント原料等への利用
が困難であり、費用をかけて廃棄処分されていた転炉ス
ラグを用いることで、転炉スラグをセメントの原料とし
て有効利用する方法を提供すること。
【構成】 混合する高炉スラグ及び転炉スラグの少なく
とも１種が溶融状態であって、高炉スラグ９５〜７０重
量％、転炉スラグ５〜３０重量％となるように混合し、
溶融均質化させたのち、水砕し、水砕の粉末に普通ポル
トランドセメントを配合するセメントの製造方法及び溶
融高炉スラグに対し、転炉スラグの粒状物を３０重量％
以下添加、混合し、これを水砕し、得られた水砕を所定
の粉末度となるまで粉砕して水砕粉末とする水砕粉末の
製造方法。
【効果】 本発明によれば、従来費用をかけて廃棄処分
されていた転炉スラグをセメント原料として有効利用で
き、高炉セメントの性能を向上させることができる。(57) [Summary] [Purpose] To improve the basicity of blast furnace slag, and as a material for adjusting its composition, it has been difficult to use it for cement raw materials, etc. To provide a method for effectively using converter slag as a raw material for cement by using slag. [Composition] At least one of the blast furnace slag and the converter slag to be mixed is in a molten state, and mixed so that the blast furnace slag is 95 to 70% by weight and the converter slag is 5 to 30% by weight.
30% by weight of granules of converter slag is added to the method for producing cement, which is obtained by blending ordinary Portland cement with granulated powder after being melted and homogenized.
A method for producing a granulated powder, in which the granules are added and mixed, granulated, and the granules obtained are ground to a predetermined fineness to form a granulated powder. [Effect] According to the present invention, the converter slag, which has been conventionally disposed of at a high cost, can be effectively used as a cement raw material, and the performance of blast furnace cement can be improved.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、転炉スラグを高炉セメ
ント用の水砕スラグの原料として利用するセメントの製
造方法及び転炉スラグを用いた水砕粉末の製造方法に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing cement which uses converter slag as a raw material for granulated slag for blast furnace cement, and a method for producing granulated powder using converter slag.
【０００２】[0002]
【従来の技術】高炉操業時に発生する鉄鋼スラグは、そ
の発生工程によって、高炉スラグ、転炉スラグ、電炉ス
ラグ等が知られており、これらの発生量は、製鉄業の進
展に伴い膨大なものとなっている。例えば、平成４年度
の鉄鋼スラグは全国で約３５００万トン発生しており、
その内訳は高炉スラグ約２２６０万トン、転炉スラグ約
９６０万トン、電炉スラグ約２５０万トンとなってい
る。このような実情によりこれらの資源化を目指した種
々の検討が報告されている。特に近年、「リサイクル
法」によるスラグの副産物指定により、スラグの資源化
の動きは多様化し、今後益々旺盛になることは想像に難
くない。2. Description of the Related Art Steel slag generated during blast furnace operation is known to be blast furnace slag, converter slag, electric furnace slag, etc., depending on the generation process. Has become. For example, about 35 million tons of steel slag was generated nationwide in 1992,
The breakdown is about 22.6 million tons of blast furnace slag, about 9.6 million tons of converter slag, and about 2.5 million tons of electric furnace slag. Due to such circumstances, various studies aimed at recycling these resources have been reported. Especially in recent years, it is not difficult to imagine that the slag by-products have been diversified due to the designation of slag by-products under the “Recycling Law”, and will become more vigorous in the future.
【０００３】上記の如きスラグの利用は、高炉スラグに
ついては発生量の約６０％がセメント原料やセメント混
和材として使用されている。一方、転炉スラグは、Ｃａ
Ｏに起因する大気中での経時的な体積膨張により崩壊す
る現象、すなわち一般に「ふける」と称される風化現象
を呈する。このため、転炉スラグの有効利用方法として
は、建材や土壌改良材等の用途が挙げられるものの、現
在のその処理量は発生量の約５％程度に留まっている。
このように、転炉スラグにおいては未だ適当な処理方法
が見出されておらず、その殆どが費用をかけて埋立等の
廃棄処分に付されているに過ぎない。In the use of slag as described above, about 60% of the generated amount of blast furnace slag is used as a cement raw material or a cement admixture. On the other hand, the converter slag is Ca
It exhibits a phenomenon that it collapses due to time-dependent volume expansion in the atmosphere due to O, that is, a weathering phenomenon generally referred to as “indulgence”. For this reason, as an effective use method of the converter slag, there are applications such as building materials and soil improving materials, but the amount treated at present is only about 5% of the generated amount.
As described above, no suitable treatment method has been found for converter slag, and most of them are simply disposed of at a cost such as landfill.
【０００４】高炉スラグは水で急冷して水砕スラグと
し、乾燥後粉砕してポルトランドセメントに混合し、高
炉セメントの製造に供されている。高炉スラグがセメン
ト原料に用いられる所以は、溶融状態から急冷すること
によりその９８％以上が活性に富むガラス質となり、潜
在水硬性を有するからである。高炉スラグは高炉セメン
トの製造に供する場合には、セメントの品質管理上その
塩基度がある一定以上でなければならない。しかしなが
ら、高炉の操業条件の変更、原料鉱石の銘柄の変更があ
った場合には塩基度が変化し、所定の値に達しない恐れ
が生ずる。Blast furnace slag is rapidly cooled with water to give granulated slag, which is dried, pulverized and mixed with Portland cement to be used for producing blast furnace cement. The reason why blast furnace slag is used as a cement raw material is that 98% or more of the blast furnace slag becomes a glassy material rich in activity by quenching from a molten state and has latent hydraulicity. When blast furnace slag is used for the production of blast furnace cement, its basicity must be above a certain level for quality control of the cement. However, if the operating conditions of the blast furnace are changed or the brand of the raw material ore is changed, the basicity changes and there is a risk that the value will not reach a predetermined value.
【０００５】このような、高炉スラグの塩基度を調整す
る方法として、高炉の出銑口からの溶銑と溶滓の混合流
の落下地点に、石灰類等の成分調整材を添加する方法
（特公昭４７−３６３７号公報、特開昭６４−６２４１
０号公報）が開示されている。しかしながら、成分調整
材として石灰石を用いた場合、石灰石が溶滓と接触する
際の吸熱分解反応により大量の熱量を奪うことで溶滓の
粘度低下をもたらし、石灰石と溶滓の混合効率の低下の
原因や、溶滓の温度低下により水砕スラグのガラス化率
が低下する原因となる。また、石灰石自体が高価である
等といった問題点がある。As a method of adjusting the basicity of the blast furnace slag, a component adjusting material such as limes is added to the falling point of the mixed flow of hot metal and slag from the tap hole of the blast furnace (special feature JP-A-47-3637, JP-A-64-6241
No. 0) is disclosed. However, when limestone is used as a component adjusting material, a large amount of heat is taken by the endothermic decomposition reaction when limestone comes into contact with the slag, resulting in a decrease in the viscosity of the slag and a decrease in the mixing efficiency of the limestone and the slag. This may cause the vitrification rate of the granulated slag to decrease due to the temperature of the slag. There is also a problem that limestone itself is expensive.
【０００６】[0006]
【発明が解決しようとする課題】従って、本発明の目的
は、高炉スラグの塩基度を向上させること、更にはその
成分調整材として、従来セメント原料等への利用が困難
であり、費用をかけて廃棄処分されていた転炉スラグを
用いることで、転炉スラグをセメントの原料として有効
利用する方法を提供することにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to improve the basicity of blast furnace slag, and it is difficult to use it as a raw material for cement as a component adjusting material thereof, which is expensive. The purpose of the present invention is to provide a method for effectively using converter slag as a raw material for cement by using converter slag that has been disposed of as a waste.
【０００７】[0007]
【課題を解決するための手段】本発明者等は、上記事情
に鑑み鋭意研究を行った結果、転炉スラグを高炉スラグ
に特定量配合し、溶融混合して水砕することにより、高
炉スラグの塩基度が向上が図れ、転炉スラグがセメント
の原料として利用可能となること、更にはこれを用いた
コンクリートの品質が従来品に比して向上することを見
出し、本発明を完成した。すなわち、本発明は、混合す
る高炉スラグ及び転炉スラグの少なくとも１種が溶融状
態であって、高炉スラグ９５〜７０重量％、転炉スラグ
５〜３０重量％となるように混合し、溶融均質化させた
のち、水砕し、水砕の粉末に普通ポルトランドセメント
を配合することを特徴とするセメントの製造方法であ
り、溶融高炉スラグに対し、転炉スラグの粒状物を３０
重量％以下添加、混合し、これを水砕し、得られた水砕
を所定の粉末度となるまで粉砕して水砕粉末とすること
を特徴とする水砕粉末の製造方法である。Means for Solving the Problems As a result of intensive studies in view of the above circumstances, the present inventors have found that a specific amount of converter slag is blended with blast furnace slag, and the mixture is melt-mixed and water granulated to form blast furnace slag. The present invention has been completed by finding that the basicity can be improved, converter slag can be used as a raw material for cement, and that the quality of concrete using this can be improved as compared with conventional products. That is, in the present invention, at least one of the blast furnace slag and the converter slag to be mixed is in a molten state, and the blast furnace slag is mixed so as to be 95 to 70% by weight and the converter slag 5 to 30% by weight, and melted and homogenized. It is a method for producing a cement, characterized in that it is granulated, then granulated, and the granulated powder is mixed with ordinary Portland cement. Granules of converter slag are mixed with molten blast furnace slag to 30 times.
A method for producing a water-granulated powder, which comprises adding and mixing in an amount of less than or equal to wt%, water-granulating the mixture, and pulverizing the obtained water-granulation until a predetermined fineness is obtained to obtain a water-granulated powder.
【０００８】以下、本発明を詳細に説明する。一般に高
炉スラグの組成は、シリカ約３１〜３５％、アルミナ約
１４〜２０％、酸化カルシウム約３８〜４２％、酸化第
一鉄約０．２〜０．８％である。溶融した高炉スラグを
水等で急冷すると、ガラス化して潜在水硬性が増加する
ので、高炉セメントの原料として使用されている。The present invention will be described in detail below. Generally, the composition of the blast furnace slag is about 31-35% silica, about 14-20% alumina, about 38-42% calcium oxide, about 0.2-0.8% ferrous oxide. When the molten blast furnace slag is rapidly cooled with water or the like, it is vitrified and the latent hydraulic property increases, so it is used as a raw material for blast furnace cement.
【０００９】一方、転炉スラグの組成は、シリカ約１０
〜２０％、アルミナ約５〜７％、酸化カルシウム約４０
〜４２％、酸化第一鉄約２０〜４０％である。このよう
に高炉スラグに比べてシリカの量が低く、酸化カルシウ
ムの含有割合が高い。On the other hand, the composition of the converter slag is about 10 parts by weight of silica.
~ 20%, alumina about 5-7%, calcium oxide about 40
˜42%, ferrous oxide about 20-40%. Thus, the amount of silica is lower and the content ratio of calcium oxide is higher than that of blast furnace slag.
【００１０】高炉セメントは、長期材齢では普通ポルト
ランドセメントより高い圧縮強度を示すが、初期強度に
おいては劣ると一般的には認識されている。高炉セメン
トの初期強度発現性を改善するためには、高炉スラグの
塩基度を向上させることにより高炉スラグの活性を高め
るのが有効な手段と考えられるが、高炉スラグの価格と
の比較において安価に入手可能な高カルシウム源は知ら
れていない。It is generally recognized that blast furnace cement exhibits higher compressive strength than normal Portland cement at long ages, but poorer initial strength. In order to improve the initial strength development of blast furnace cement, it is considered that increasing the basicity of blast furnace slag to increase the activity of blast furnace slag is an effective means, but it is cheaper in comparison with the price of blast furnace slag. There are no known high calcium sources available.
【００１１】転炉スラグは高炉スラグよりも高い塩基度
を有するため、高炉スラグと同様に水砕処理を行えば、
一見、高炉スラグよりも高い潜在水硬性を持つセメント
原料として有用と考えられる。しかしながら、上記の如
く転炉スラグ中にはシリカの量が低いために、例え水砕
処理に供してもガラス化し難く、高炉水砕スラグの如き
潜在水硬性は得られないものである。また、フリーのＣ
ａＯの存在によるコンクリートの膨張も問題となる。Since the converter slag has a higher basicity than the blast furnace slag, if water granulation treatment is carried out like the blast furnace slag,
At first glance, it is considered to be useful as a cement raw material that has higher latent hydraulicity than blast furnace slag. However, since the amount of silica in the converter slag is low as described above, vitrification is unlikely to occur even if it is subjected to water granulation treatment, and latent hydraulic properties like granulated blast furnace slag cannot be obtained. Also, free C
Expansion of concrete due to the presence of aO is also a problem.
【００１２】本発明では、上記の高炉スラグと転炉スラ
グを混合し、溶融均質化させたのち、水砕する（こうし
て得られたものを、以下、改質水砕スラグと称する）。
これらの混合にあたっては、高炉炉前において流下する
高炉スラグの樋に溶融状態又は粒状の冷材である転炉ス
ラグを直接投入してもよいし、これらのスラグがどちら
も粒状の冷材であるものを混合し、電気炉等で溶融して
もよい。溶融均質化の手段については特に限定されない
が、その溶融温度については、改質水砕スラグの高ガラ
ス量を得るために１５００±５０℃とするのが好まし
い。水砕は、水を張った水砕池に投入する方法、圧力水
吹製法等、従来の水砕スラグの製法をそのまま適用でき
る。In the present invention, the above-mentioned blast furnace slag and converter slag are mixed, melted and homogenized, and then granulated (the thus obtained product is hereinafter referred to as reformed granulated slag).
In mixing these, the converter slag, which is a molten or granular cold material, may be directly added to the gutter of the blast furnace slag flowing down in front of the blast furnace, and both of these slags are granular cold materials. The materials may be mixed and melted in an electric furnace or the like. The melt homogenizing means is not particularly limited, but its melting temperature is preferably 1500 ± 50 ° C. in order to obtain a high glass content of the reformed granulated slag. For the water granulation, the conventional manufacturing method of the water granulation slag such as the method of pouring it into a water granulation pond filled with water or the pressure spraying method can be applied as it is.
【００１３】本発明における高炉スラグと転炉スラグの
混合割合は、高炉スラグ９５〜７０重量％に対し転炉ス
ラグ５〜３０重量％、好ましくは、高炉スラグ９０〜７
５重量％に対し転炉スラグ１０〜２５重量％である。転
炉スラグの配合割合が５重量％未満であると改質水砕ス
ラグの塩基度の向上が認められず、また、３０重量％を
超える場合には改質水砕スラグのガラス量の低下、これ
を用いたモルタルの異常凝結及び強度低下等を引き起こ
す。The mixing ratio of the blast furnace slag and the converter slag in the present invention is 5 to 30% by weight, preferably 95 to 70% by weight of the blast furnace slag, preferably 90 to 7% by weight.
It is 10 to 25% by weight of converter slag with respect to 5% by weight. When the blending ratio of the converter slag is less than 5% by weight, the basicity of the reformed water granulated slag is not improved, and when it exceeds 30% by weight, the glass amount of the reformed water granulated slag is reduced, It causes abnormal setting of mortar and deterioration of strength.
【００１４】得られた改質水砕スラグは適当な手段によ
り乾燥、粉砕したのち、普通ポルトランドセメントと混
合する。改質水砕スラグと普通ポルトランドセメントと
の混合割合は、改質水砕スラグ１００重量部に対し普通
ポルトランドセメント５０〜１５０重量部が好ましい。The obtained modified granulated slag is dried and pulverized by an appropriate means, and then mixed with ordinary Portland cement. The mixing ratio of the modified granulated slag and the ordinary Portland cement is preferably 50 to 150 parts by weight of the ordinary Portland cement with respect to 100 parts by weight of the modified granulated slag.
【００１５】[0015]
【実施例】以下、実施例により本発明を具体的に説明す
る。The present invention will be described below in detail with reference to examples.
【００１６】改質水砕スラグの製造は、以下のようにし
て行った。表１に示す化学成分を持つ高炉スラグと転炉
スラグを、予め別々にポットミルで１４９μｍの篩を全
通する程度に粗粉砕した。これらを表２に示す配合割合
（実施例１〜３、比較例１、２）で混合して黒鉛坩堝に
充填し、高周波電気炉内で１５分間、１５００℃にて溶
融混合した。次いで、坩堝底部に開けた孔より該溶融混
合スラグを攪拌羽根付き水槽中に流下させ、攪拌しなが
ら急冷することにより、改質水砕スラグを得た。該改質
水砕スラグを１００℃にて乾燥後、ポットミルを用いて
ブレーンで４０００±１００ｃｍ2 ／ｇに粉砕しセメン
ト原料としての評価に供した。得られた改質水砕スラグ
のガラス化率及び成分分析の結果から計算された塩基度
を表２に示す。The modified granulated slag was manufactured as follows. The blast furnace slag and the converter slag having the chemical components shown in Table 1 were separately coarsely crushed in advance in a pot mill to such an extent that they could pass through a 149 μm sieve. These were mixed at the compounding ratios shown in Table 2 (Examples 1 to 3 and Comparative Examples 1 and 2), filled in a graphite crucible, and melt-mixed at 1500 ° C. for 15 minutes in a high frequency electric furnace. Next, the molten mixed slag was made to flow through a hole formed in the bottom of the crucible into a water tank equipped with stirring blades, and rapidly cooled while stirring to obtain reformed granulated slag. The modified water granulated slag was dried at 100 ° C., and then pulverized to 4000 ± 100 cm 2 / g with a brane using a pot mill and used as a cement raw material for evaluation. Table 2 shows the vitrification rate of the obtained modified granulated slag and the basicity calculated from the results of the component analysis.
【００１７】この様にして得られた改質水砕スラグを普
通ポルトランドセメントと重量部で１：１の割合で混合
し、試製高炉セメントＢ種とした。該高炉セメントＢ種
について、ＪＩＳ Ｒ−５２０１に従い、モルタルの圧
縮強度試験及び凝結試験を行った結果を表３に示す。The modified granulated slag thus obtained was mixed with ordinary Portland cement at a ratio of 1: 1 by weight to obtain trial blast furnace cement type B. Table 3 shows the results of a mortar compressive strength test and a coagulation test of the blast furnace cement type B according to JIS R-5201.
【００１８】[0018]
【表１】 [Table 1]
【００１９】[0019]
【表２】 ※１ ＪＩＳ算出式 (CaO+Al2O3+MgO)/SiO2 より算出 ※２ 偏光顕微鏡法、粉末Ｘ線回折による結晶の同定（単位：％）[Table 2] * 1 Calculated from JIS calculation formula (CaO + Al 2 O 3 + MgO) / SiO 2 * 2 Crystal identification by polarization microscopy and powder X-ray diffraction (unit:%)
【００２０】[0020]
【表３】 [Table 3]
【００２１】[0021]
【発明の効果】本発明によれば、従来費用をかけて廃棄
処分されていた転炉スラグをセメント原料として有効利
用でき、高炉セメントの性能を向上させることができ
る。 （以下、余白）According to the present invention, the converter slag, which has been conventionally discarded at a high cost, can be effectively used as a raw material for cement, and the performance of blast furnace cement can be improved. (Hereinafter, margin)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 安永 享 福岡県北九州市八幡東区大蔵２丁目17−１ −502 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akira Yasunaga 2-17-1 Okura 2-chome, Hachimanto-ku, Kitakyushu, Fukuoka
Claims (4)
なくとも１種が溶融状態であって、高炉スラグ９５〜７
０重量％、転炉スラグ５〜３０重量％となるように混合
し、溶融均質化させたのち、水砕し、水砕の粉末に普通
ポルトランドセメントを配合することを特徴とするセメ
ントの製造方法。1. Blast furnace slag 95 to 7 in which at least one of blast furnace slag and converter slag to be mixed is in a molten state.
0% by weight and 5 to 30% by weight of converter slag are mixed, melted and homogenized, then granulated, and granulated powder is blended with ordinary Portland cement to prepare a cement. .
ちらも粒状の冷材であって、これらを混合し、溶融均質
化させたのち、水砕し、水砕の粉末に普通ポルトランド
セメントを配合することを特徴とする請求項１記載のセ
メントの製造方法。2. The blast furnace slag and the converter slag to be mixed are both granular cold materials, which are mixed, melted and homogenized, then granulated, and granulated powder is blended with ordinary Portland cement. The method for producing the cement according to claim 1, wherein
配合割合が、水砕粉末１００重量部に対し普通ポルトラ
ンドセメント４０〜２００重量部である請求項１又は２
記載のセメントの製造方法。3. The blending ratio of the granulated powder and the ordinary Portland cement is 40 to 200 parts by weight of the ordinary Portland cement with respect to 100 parts by weight of the granulated powder.
A method for producing the described cement.
状物を３０重量％以下添加、混合し、これを水砕し、得
られた水砕を所定の粉末度となるまで粉砕して水砕粉末
とすることを特徴とする水砕粉末の製造方法。4. Granules of converter slag are added to the molten blast furnace slag in an amount of 30% by weight or less, mixed, and granulated, and the resulting granules are pulverized to a predetermined fineness and water. A method for producing a water-granulated powder, which is a crushed powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7170385A JPH08337448A (en) | 1995-06-13 | 1995-06-13 | Cement manufacturing method and granulated powder manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7170385A JPH08337448A (en) | 1995-06-13 | 1995-06-13 | Cement manufacturing method and granulated powder manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08337448A true JPH08337448A (en) | 1996-12-24 |
Family
ID=15903958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7170385A Pending JPH08337448A (en) | 1995-06-13 | 1995-06-13 | Cement manufacturing method and granulated powder manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08337448A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008247715A (en) * | 2007-03-30 | 2008-10-16 | Jfe Steel Kk | Method for selecting granulated blast furnace slag for cement and method for producing cement composition |
| WO2024090580A1 (en) * | 2022-10-28 | 2024-05-02 | グローバル・マテリアルリサーチ株式会社 | Method for producing hydraulic cement composition using blast furnace slag and converter furnace slag |
| WO2024090581A1 (en) * | 2022-10-28 | 2024-05-02 | グローバル・マテリアルリサーチ株式会社 | Method for producing hydraulic cement composition using electric furnace slag |
| WO2025225735A1 (en) * | 2024-04-26 | 2025-10-30 | グローバル・マテリアルリサーチ株式会社 | Method for producing hydraulic cement |
-
1995
- 1995-06-13 JP JP7170385A patent/JPH08337448A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008247715A (en) * | 2007-03-30 | 2008-10-16 | Jfe Steel Kk | Method for selecting granulated blast furnace slag for cement and method for producing cement composition |
| WO2024090580A1 (en) * | 2022-10-28 | 2024-05-02 | グローバル・マテリアルリサーチ株式会社 | Method for producing hydraulic cement composition using blast furnace slag and converter furnace slag |
| WO2024090581A1 (en) * | 2022-10-28 | 2024-05-02 | グローバル・マテリアルリサーチ株式会社 | Method for producing hydraulic cement composition using electric furnace slag |
| WO2025225735A1 (en) * | 2024-04-26 | 2025-10-30 | グローバル・マテリアルリサーチ株式会社 | Method for producing hydraulic cement |
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