JP2805065B2 - Slag wool production method - Google Patents
Slag wool production methodInfo
- Publication number
- JP2805065B2 JP2805065B2 JP63174329A JP17432988A JP2805065B2 JP 2805065 B2 JP2805065 B2 JP 2805065B2 JP 63174329 A JP63174329 A JP 63174329A JP 17432988 A JP17432988 A JP 17432988A JP 2805065 B2 JP2805065 B2 JP 2805065B2
- Authority
- JP
- Japan
- Prior art keywords
- slag
- electric furnace
- slag wool
- molten
- production method
- 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
Landscapes
- Manufacture, Treatment Of Glass Fibers (AREA)
- Furnace Details (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、電炉製鋼過程で生じる溶融電炉スラグから
スラグウールを製造する方法に関する。Description: TECHNICAL FIELD The present invention relates to a method for producing slag wool from molten electric furnace slag generated in an electric furnace steelmaking process.
従来の技術及び発明が解決しようとする問題点 従来、アルミニウム等の還元剤を使用して還元鉄等の
有価金属が回収された溶融電炉スラグは砕石または産業
廃棄物として処分されているのが現状であり、有益な成
分を含む溶融電炉スラグが有効に利用されていないとい
う問題があった。Problems to be solved by conventional technology and invention Conventionally, molten electric furnace slag from which valuable metals such as reduced iron have been recovered using a reducing agent such as aluminum has been disposed of as crushed stone or industrial waste. However, there has been a problem that the molten electric furnace slag containing a useful component has not been effectively used.
問題点を解決するための手段 本発明はこのような問題点を解決するための手段とし
て、溶融電炉スラグに発熱還元剤を添加して有価金属を
抜き取った後の溶融電炉スラグ中に珪砂を吹き込むこと
により改質された残留スラグを冷却後再加熱して溶融さ
せ、圧縮空気を吹き込んで繊維化する構成とした。Means for Solving the Problems The present invention, as means for solving such problems, blows silica sand into the molten electric furnace slag after adding a heat generating reducing agent to the molten electric furnace slag and extracting valuable metals. Thus, the modified residual slag was cooled, reheated and melted, and compressed air was blown into fiber.
発明の効果 断熱材などとして有益な繊維状のスラグウールを製造
することができる。Effect of the Invention Fibrous slag wool useful as a heat insulating material or the like can be produced.
実施例１ 先ず、溶融電炉スラグから還元鉄等の有価金属を回収
するために、発熱還元剤として金属アルミニウムを含有
するアルミ灰を主剤とし、還元雰囲気を増進させるた
め、塩化ナトリウムと沸化カルシウムを少量添加したも
のを用い、第１図に示す滓鍋１に第１表左欄の組成を有
する溶融電炉スラグ5tonを充填して、上記発熱還元剤13
00kgをランス管２から2.5〜4kg/cm2の窒素を用いて８〜
10分間で吹込んだところ、スラグ温度は1380℃付近から
1690℃まで上昇し、滓鍋１の底に溶鋼３が溜ったので、
溶鋼取出口栓４を抜いて溶鋼３を抜き取った後、残留ス
ラグ５に珪砂約1000kgを窒素を用いてランス管２から吹
込んだところ、激しくバブリングしながらスラグ５中に
溶融し、スラグ５の温度は1490℃まで低下した。このよ
うにして改質された残留スラグの組成を第１表の中欄に
示す。これを取り出して冷却後再加熱して溶融し、圧縮
空気を吹き付けて繊維化したところ、第１表右欄の組成
を有する良質なスラグウールが製造された。Example 1 First, in order to recover valuable metals such as reduced iron from molten electric furnace slag, aluminum ash containing metallic aluminum was used as a main component as an exothermic reducing agent, and sodium chloride and calcium fluoride were used to enhance the reducing atmosphere. The slag pot 1 shown in FIG. 1 was filled with 5 tons of molten electric furnace slag having the composition shown in the left column of Table 1 using a small amount of the slag pot 1 shown in FIG.
00kg from the lance tube 2 using 2.5 ~ 4kg / cm 2 of nitrogen for 8 ~
After blowing in 10 minutes, the slag temperature starts from around 1380 ℃
As the temperature rose to 1690 ° C and molten steel 3 accumulated at the bottom of the slag pot 1,
After the molten steel outlet plug 4 was removed and the molten steel 3 was extracted, approximately 1000 kg of silica sand was blown into the residual slag 5 from the lance tube 2 using nitrogen, and was melted into the slag 5 while bubbling vigorously. The temperature dropped to 1490 ° C. The composition of the residual slag thus modified is shown in the middle column of Table 1. This was taken out, cooled, reheated and melted, and compressed air was blown to produce a fiber. As a result, a high-quality slag wool having the composition shown in the right column of Table 1 was produced.
実施例２ 第２表の左欄に示す実施例１と異なる組成の溶融電炉
スラグを用いて、実施例１と同様の処理を行った結果、
同表中欄の組成の改質残留スラグが得られ、これを同様
にスラグウール化したところ同表右欄の組成となり、断
熱材等として良好な性質を有する。 Example 2 As a result of performing the same treatment as in Example 1 using a molten electric furnace slag having a composition different from that of Example 1 shown in the left column of Table 2,
A modified residual slag having the composition shown in the column in the table was obtained. When the slag was similarly converted into slag wool, the composition became the composition shown in the right column of the table, and had good properties as a heat insulating material and the like.
第１図は本発明の実施に使用する滓鍋の断面図である。 1:滓鍋、2:ランス管、3:溶鋼、5:溶融スラグ FIG. 1 is a sectional view of a slag pot used for carrying out the present invention. 1: slag pot, 2: lance tube, 3: molten steel, 5: molten slag
Claims (2)
価金属を抜き取った後の溶融電炉スラグ中に珪砂を吹き
込むことにより改質された残留スラグを冷却後再加熱し
て溶融させ、圧縮空気を吹き込んで繊維化するスラグウ
ールの製造方法。An exothermic reducing agent is added to a molten electric furnace slag to extract valuable metals, and then silica sand is blown into the molten electric furnace slag. A method for producing slag wool that fiberizes by blowing air.
徴とする請求項１記載のスラグウールの製造方法。2. The method for producing slag wool according to claim 1, wherein said silica sand is blown together with nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63174329A JP2805065B2 (en) | 1988-07-13 | 1988-07-13 | Slag wool production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63174329A JP2805065B2 (en) | 1988-07-13 | 1988-07-13 | Slag wool production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0225689A JPH0225689A (en) | 1990-01-29 |
| JP2805065B2 true JP2805065B2 (en) | 1998-09-30 |
Family
ID=15976738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63174329A Expired - Lifetime JP2805065B2 (en) | 1988-07-13 | 1988-07-13 | Slag wool production method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2805065B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0711196Y2 (en) * | 1989-11-28 | 1995-03-15 | 株式会社タイムスエンジニアリング | PC Strand with Twist Fray |
| CN116814885A (en) * | 2023-06-27 | 2023-09-29 | 中冶赛迪工程技术股份有限公司 | Method for extracting iron by online direct reduction of electric furnace steel slag |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5835390B2 (en) * | 1978-09-13 | 1983-08-02 | 株式会社日立製作所 | Package erroneous insertion detection method |
| JPS58137498A (en) * | 1982-02-10 | 1983-08-15 | Nippon Jiryoku Senko Kk | Utilization of high-basicity steel slag |
-
1988
- 1988-07-13 JP JP63174329A patent/JP2805065B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0225689A (en) | 1990-01-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| HUP9902339A2 (en) | Method and apparatus for making metallic iron | |
| CN108796226B (en) | A method of it recycling alkali and soaks tungsten slag | |
| NO20040284L (en) | Very pure, metallurgical silicon and method of making this | |
| HUP0003515A2 (en) | Method of making iron and steel | |
| KR20010053024A (en) | Method for processing steel slags | |
| US4165234A (en) | Process for producing ferrovanadium alloys | |
| US3809547A (en) | Electric furnace steelmaking process using oxide of boron additive | |
| JP2805065B2 (en) | Slag wool production method | |
| US4363657A (en) | Process for obtaining manganese- and silicon-based alloys by silico-thermal means in a ladle | |
| CN111349803A (en) | Method for preparing yttrium intermediate alloy | |
| JP7147734B2 (en) | Method for producing slag containing two liquid phases and method for producing artificial phosphate rock | |
| WO1989002415A1 (en) | Method for the purification of silicon | |
| JPH09143586A (en) | Method for removing copper in molten iron | |
| JPH0710616A (en) | How to treat desulfurized slag | |
| JP3018330B2 (en) | Manufacturing method of artificial stone | |
| US1629563A (en) | Process for making iron and steel | |
| JPH0483745A (en) | Production of alumina cement using electric furnace slag as raw material | |
| JPS5919897B2 (en) | Method for reforming converter slag | |
| RU2164960C1 (en) | Method of modifying agent production | |
| GB1025229A (en) | Process for the production of alloy steels | |
| CN112250425A (en) | A kind of production method of brown corundum | |
| HU196632B (en) | Process for producing high-purity steels | |
| US2251968A (en) | Process for the production of very pure magnesium from magnesium ores | |
| US3475162A (en) | Thermal process for the production of magnesium | |
| Peacey et al. | Production of Magnesium Metal From Magnesium Containing Materials |