JP3240053B2 - Method for producing Portland cement from electric furnace slag - Google Patents
Method for producing Portland cement from electric furnace slagInfo
- Publication number
- JP3240053B2 JP3240053B2 JP19744690A JP19744690A JP3240053B2 JP 3240053 B2 JP3240053 B2 JP 3240053B2 JP 19744690 A JP19744690 A JP 19744690A JP 19744690 A JP19744690 A JP 19744690A JP 3240053 B2 JP3240053 B2 JP 3240053B2
- Authority
- JP
- Japan
- Prior art keywords
- electric furnace
- slag
- portland cement
- smelting reduction
- reduction period
- 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 - Fee Related
Links
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、電気炉による製鋼の過程で発生する電気炉
スラグをポルトランドセメントの原料として有効利用す
ることができるようにしたポルトランドセメントの製造
方法に関する。Description: TECHNICAL FIELD The present invention relates to a method for producing Portland cement in which electric furnace slag generated during steelmaking by an electric furnace can be effectively used as a raw material for Portland cement.
従来の技術 従来、電気炉による製鋼の過程で発生する電気炉スラ
グをうちの還元期スラグを処理する方法の一つとして、
風化して粉末になつたものをアスフアルトフイラーとし
て有効利用を図ることが行われていた。Conventional technology Conventionally, as one of the methods of treating the reduction slag of the electric furnace slag generated in the process of steelmaking by an electric furnace,
It has been practiced to effectively use weathered powders as asphalt fillers.
発明が解決しようとする課題 しかし、上述のような処理方法は現実には一部におい
て実施されているだけであつて、殆どの場合、還元期ス
ラグは酸化期スラグと混合して破砕処理の上、砕石とし
て使用されていたが、大部分は産業廃棄物として処分さ
れていた。Problems to be Solved by the Invention However, the above-mentioned treatment methods are actually only partially implemented, and in most cases, the reducing slag is mixed with the oxidizing slag and subjected to crushing treatment. Used as crushed stone, but most were disposed of as industrial waste.
このように、従来は電気炉の還元期スラグの有効利用
度が極めて低かつたため、還元期スラグを有効に利用す
ることのできる手段が望まれていた。As described above, in the past, the effective utilization of the reduction period slag of the electric furnace was extremely low, and therefore, means for effectively using the reduction period slag have been desired.
課題を解決するための手段 本発明は、上記課題を解決するための手段として、電
気炉による製鋼の過程で発生する電気炉スラグのうちの
溶融還元期スラグを別の電気炉内に収容してその別の電
気炉内に、少なくとも二酸化珪素及び酸化カルシウムを
含む成分調整材を添加し、その成分調整材を添加した溶
融還元期スラグを別の電気炉から鋼製函に放流し、散水
によって急速冷却して固化することによりクリンカーを
生成し、そのクリンカーに凝結調節材として石膏を添加
して微粉砕する構成とした。Means for Solving the Problems The present invention, as means for solving the above problems, accommodates the smelting reduction stage slag of the electric furnace slag generated in the process of steelmaking by an electric furnace in another electric furnace. Into the separate electric furnace, a component adjusting material containing at least silicon dioxide and calcium oxide is added, and the slag in the smelting reduction phase to which the component adjusting material has been added is discharged from another electric furnace into a steel box, and rapidly sprinkled by water sprinkling. Clinker was formed by cooling and solidifying, and gypsum was added to the clinker as a setting control material, followed by fine pulverization.
発明の作用及び効果 本発明は上記構成になり、溶融還元期スラグに所定量
の成分調整材を添加することにより、溶融還元期スラグ
の組成成分が所定の構成比となる。これを急速冷却する
ことによつて得られたクリンカーに石膏を添加して粉砕
すると、珪酸三カルシウム（3CaO・SiO2）、珪酸二カル
シウム（2CaO・SiO2）等を主鉱物とするポルトランドセ
メントが製造される。Operation and Effect of the Invention The present invention has the above-described configuration, and the composition of the slag in the smelting reduction period has a predetermined composition ratio by adding a predetermined amount of the component adjusting material to the slag in the smelting reduction period. This will be comminuted with addition of gypsum to the clinker obtained Te cowpea to rapid cooling, silicate tricalcium (3CaO · SiO 2), is Portland cement to a like dicalcium silicate (2CaO · SiO 2) as a main mineral Manufactured.
本発明方法によれば、溶融還元期スラグを原料として
利用価値の大きいポルトランドセメントを製造すること
ができるから、還元期スラグの有効利用を図ることがで
きる効果がある。According to the method of the present invention, Portland cement having a high utility value can be produced using the slag in the smelting reduction period as a raw material, and thus there is an effect that the slag in the reduction period can be effectively used.
実施例 以下、本発明の一実施例を説明する。Example An example of the present invention will be described below.
図示しない電気炉による製鋼の過程において生じた溶
融還元期スラグ１を取り出して、製鋼用とは別の第１図
に示す電気炉２内に収容する。収容した溶融還元期スラ
グ１については計量と組成成分の分析を行つた。その結
果は表１に示すとおりであり、重量は40Kg、各組成成分
の構成比は二酸化珪素（SiO2）が16.4％、酸化アルミニ
ウム（Al2O3）が18.8％、酸化第二鉄（Fe2O3）が0.5
％、酸化カルシウム（CaO）が48.6％、酸化マグネシウ
ム（MgO）が8.5％、三酸化硫黄（SO3）が0.06％、酸化
ナトリウム（Na2O）が0.17％、酸化カリウム（K2O）が
0.07％であつた。The slag 1 in the smelting reduction period generated in the process of steelmaking by an electric furnace (not shown) is taken out and stored in an electric furnace 2 shown in FIG. The slag 1 contained in the smelting reduction stage was measured and analyzed for its composition. The results are as shown in Table 1. The weight was 40 kg, and the composition ratio of each component was 16.4% of silicon dioxide (SiO 2 ), 18.8% of aluminum oxide (Al 2 O 3 ), and ferric oxide (Fe 2 O 3 ) is 0.5
%, Calcium oxide (CaO) 48.6%, magnesium oxide (MgO) 8.5%, sulfur trioxide (SO 3 ) 0.06%, sodium oxide (Na 2 O) 0.17%, potassium oxide (K 2 O)
It was 0.07%.
次に、JIS R 5210の普通ポルトランドセメントに該当
するポルトランドセメントを生成するため、電気炉２内
の溶融還元期スラグ１の重量と各組成成分の構成比に基
づいて、添加する成分調整材の成分構成を決めるととも
にその各成分の重量を算出した。その結果は、表１に示
すように、天然珪砂（SiO2）が17Kg、酸化鉄（FeO）が3
Kg、生石灰（CaO）が50Kgである。Next, based on the weight of the slag 1 in the smelting reduction period in the electric furnace 2 and the composition ratio of each component, the components of the component adjusting material to be added are produced in order to produce Portland cement corresponding to ordinary Portland cement of JIS R 5210. The composition was determined and the weight of each component was calculated. The results show that, as shown in Table 1, 17 kg of natural silica sand (SiO 2 ) and 3 kg of iron oxide (FeO)
Kg, quicklime (CaO) is 50Kg.
そして、溶融還元期スラグ１を電極３により約1600℃
の温度に保持しつつ、溶融還元期スラグ１中にランス管
４を通して成分調整材の天然珪砂、酸化鉄及び生石灰を
添加し、ランス管４から４〜5Kg/cm2の圧縮窒素を吹き
込むことにより、溶融還元期スラグ１と成分調整材とを
十分に攪拌して化学反応を生じさせた。化学反応が済ん
だ後、溶融還元期スラグ１を電気炉２から図示しない鋼
製函に放流し、散水によつて急速に冷却することにより
110Kgのクリンカーを得た。Then, the slag 1 in the smelting reduction period is heated to about 1600 ° C. by the electrode 3.
While maintaining the temperature of the slag 1, natural silica sand, iron oxide and quick lime as a component adjusting material are added through the lance tube 4 into the slag 1 during the smelting reduction period, and compressed nitrogen of 4 to 5 kg / cm 2 is blown from the lance tube 4. The slag 1 in the smelting reduction period and the component adjusting material were sufficiently stirred to cause a chemical reaction. After the completion of the chemical reaction, the slag 1 in the smelting reduction period is discharged from the electric furnace 2 into a steel box (not shown) and rapidly cooled by water spray.
110 Kg of clinker was obtained.
クリンカーの各組成成分の構成比は、表１に示すとお
りであつて、溶融還元期スラグ１の構成比と比較する
と、二酸化珪素、酸化第二鉄及び酸化カルシウムの割合
が増大しているとともに、酸化マグネシウムと三酸化硫
黄の割合が減少していた。このことから、得られたクリ
ンカーは、珪酸三カルシウム（3CaO・SiO2）、珪酸二カ
ルシウム（2CaO・SiO2）を主鉱物とし、普通ポルトラン
ドセメントの原料として良好なものであることが確認さ
れた。The composition ratio of each component of the clinker is as shown in Table 1, and when compared with the composition ratio of the slag 1 in the smelting reduction period, the proportions of silicon dioxide, ferric oxide and calcium oxide are increased, The proportions of magnesium oxide and sulfur trioxide were decreasing. Therefore, the resulting clinker, silicate tricalcium (3CaO · SiO 2), the dicalcium silicate (2CaO · SiO 2) as main mineral, it was confirmed in offering excellent ordinary portland cement raw materials .
このクリンカーに、凝結調整材として4Kgの石膏（CaS
O4・2H2O）を添加し、これらを図示しない粉砕機及び磨
砕機によつて微粉砕することにより、114Kgのポルトラ
ンドセメントが生成された。To this clinker, 4 kg of gypsum (CaS
O 4 · 2H 2 O) was added, by by connexion milling thereto not shown pulverizer and attritor, Portland cement 114Kg was generated.
生成されたポルトランドセメントの各成分の構成比及
び品質は、表２に示すとおりである。この表２から明ら
かなように、本実施例方法により、溶融還元期スラグ１
からJIS R 5210に適合する普通ポルトランドセメントを
製造することができた。The composition ratio and quality of each component of the produced Portland cement are as shown in Table 2. As is evident from Table 2, the slag 1 in the smelting reduction period was obtained by the method of the present embodiment.
Could produce ordinary Portland cement conforming to JIS R 5210.
なお、本発明によれば、普通ポルトランドセメントの
製造だけでなく、早強ポルトランドセメント、超早強ポ
ルトランドセメント、中庸熱ポルトランドセメントまた
は耐硫酸塩ポルトランドセメントの製造を行うことも可
能である。According to the present invention, it is possible to produce not only ordinary Portland cement but also early-strength Portland cement, ultra-high-strength Portland cement, moderately heated Portland cement or sulfate-resistant Portland cement.
添付した第１図は本発明の一実施例において使用する電
気炉の断面図を示す。 1:溶融還元期スラグFIG. 1 is a sectional view of an electric furnace used in one embodiment of the present invention. 1: Slag for smelting reduction period
───────────────────────────────────────────────────── フロントページの続き (72)発明者 渕上 榮治 愛知県名古屋市中川区小碓通５丁目１番 地 中部鋼鈑株式会社内 (72)発明者 岩部 安喜 愛知県名古屋市中川区小碓通５丁目１番 地 中部鋼鈑株式会社内 (72)発明者 田中 秀生 愛知県名古屋市中川区小碓通５丁目１番 地 中部鋼鈑株式会社内 (72)発明者 星野 熊夫 愛知県海部郡十四山村大字馬ケ地新田字 下溜62 有限会社星野産商内 (72)発明者 神農 一夫 愛知県海部郡十四山村大字馬ケ地新田字 下溜62 有限会社星野産商内 (72)発明者 井上 充 愛知県海部郡十四山村大字馬ケ地新田字 下溜62 有限会社星野産商内 (56)参考文献 特開 昭50−102616（ＪＰ，Ａ) 特開 昭62−223045（ＪＰ，Ａ) 特開 昭61−270238（ＪＰ，Ａ) 特開 平１−103937（ＪＰ，Ａ) 特公 昭60−50737（ＪＰ，Ｂ２) ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Eiji Fuchigami 5-1-1 Kousudori, Nakagawa-ku, Nagoya City, Aichi Prefecture Inside Chubu Kohan Co., Ltd. (72) Inventor Yuki Iwabe 5-1-1 Kousudori, Nakagawa-ku, Nagoya City, Aichi Prefecture Address Chubu Kohan Co., Ltd. (72) Inventor Hideo Tanaka 5-1-1 Kousudori, Nakagawa-ku, Nagoya-shi, Aichi Prefecture Chubu Kotetsu Co., Ltd. (72) Inventor Kumao Hoshino Aichi Pref. Chishindenji Shimodome 62 Hoshino Sansho Co., Ltd. (72) Inventor Kazuo Kaminori Aichi Pref. Shimozumi 62, Hoshino Sansho Co., Ltd., Shimozumi, Shiga, Niigata, Jyushiyama Village, Kaifu-gun, Aichi Prefecture (56) References JP-A-50-102616 (JP, A) JP-A-62-223045 (JP, A) JP 61 270238 (JP, A) JP flat 1-103937 (JP, A) Tokuoyake Akira 60-50737 (JP, B2)
Claims (1)
スラグのうちの溶融還元期スラグを別の電気炉内に収容
して該別の電気炉内に、少なくとも二酸化珪素及び酸化
カルシウムを含む成分調整材を添加し、該成分調整材を
添加した前記溶融還元期スラグを前記別の電気炉から鋼
製函に放流し、散水によって急速冷却して固化すること
によりクリンカーを生成し、該クリンカーに凝結調節材
として石膏を添加して微粉砕することを特徴とする電気
炉スラグを原料とするポルトランドセメントの製造方法1. A slag of a smelting reduction period among slags of electric furnace generated during steelmaking by an electric furnace is housed in another electric furnace, and the other electric furnace contains at least silicon dioxide and calcium oxide. Adding a component adjusting material, discharging the slag in the smelting reduction phase to which the component adjusting material has been added from the another electric furnace into a steel box, rapidly cooling by watering and solidifying to produce clinker, For producing Portland cement using electric furnace slag as raw material, characterized by adding gypsum as a setting control agent to the mixture and pulverizing it
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19744690A JP3240053B2 (en) | 1990-07-25 | 1990-07-25 | Method for producing Portland cement from electric furnace slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19744690A JP3240053B2 (en) | 1990-07-25 | 1990-07-25 | Method for producing Portland cement from electric furnace slag |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000063087A Division JP3338851B2 (en) | 1990-07-25 | 2000-03-08 | Method for producing clinker from electric furnace slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0483744A JPH0483744A (en) | 1992-03-17 |
| JP3240053B2 true JP3240053B2 (en) | 2001-12-17 |
Family
ID=16374644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19744690A Expired - Fee Related JP3240053B2 (en) | 1990-07-25 | 1990-07-25 | Method for producing Portland cement from electric furnace slag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3240053B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6434715B1 (en) | 1999-06-14 | 2002-08-13 | General Electric Company | Method of detecting systemic fault conditions in an intelligent electronic device |
| US6709509B2 (en) | 2001-06-05 | 2004-03-23 | Ernest John Taylor-Smith | Portland cement manufacture from slag from the production of magnesium metal |
| AU2002351569A1 (en) * | 2002-12-05 | 2004-06-23 | Newtech Commercialization Ltd. | Portland cement manufacture from slag from the production of magnesium metal |
| CN1232465C (en) * | 2002-12-24 | 2005-12-21 | 清华大学 | binary mixed coagulated stones and wet cement and method for production, deposit, transportation use and application |
| JP5094256B2 (en) * | 2007-07-19 | 2012-12-12 | 三菱電機株式会社 | Compressor control device |
| AT17171U1 (en) * | 2020-03-30 | 2021-07-15 | Bauunternehmung Granit Ges M B H | Electric furnace slag to replace conventional aggregates in concrete |
| 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 |
-
1990
- 1990-07-25 JP JP19744690A patent/JP3240053B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0483744A (en) | 1992-03-17 |
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