JPS6452013A - Production of low carbon ferro-chromium - Google Patents
Production of low carbon ferro-chromiumInfo
- Publication number
- JPS6452013A JPS6452013A JP20712787A JP20712787A JPS6452013A JP S6452013 A JPS6452013 A JP S6452013A JP 20712787 A JP20712787 A JP 20712787A JP 20712787 A JP20712787 A JP 20712787A JP S6452013 A JPS6452013 A JP S6452013A
- Authority
- JP
- Japan
- Prior art keywords
- molten slag
- chromium
- low carbon
- carbon ferro
- lime
- 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
Landscapes
- Manufacture Of Iron (AREA)
Abstract
PURPOSE:To produce a low carbon ferro-chromium having good quality at good thermal efficiency by melting chromium ore and lime in a stationary electric furnace by conducting electric power through electrodes and reacting primary slag tapped on the way of smelting and Si-Cr while always covering surface of the primary molten slag with non-melting raw material. CONSTITUTION:The Cr ore and lime are charged into the stationary type electric furnace 1 from a raw material chute 6 and melted by conducting the power through the graphite electrodes 13 to generate the molten slag 7 having Cr2O3, FeO, CaO as main composition. In this case, the surface of the molten slag 7 is always covered with mixing material 6 of the Cr ore and the lime for the raw material, to prevent heat radiation from the surface of the molten slag 7 and also to prevent Cr2O3 and FeO from becoming further high order oxides. In case quantity of the molten slag 7 increases, the tapping hole 3 is opened and the molten metal is flowed into a ladle 8 to produce the low carbon ferro-chromium by adding the Si-Cr. In this case, by holding the ratio of the quantity of the molten slag 4 remaining at furnace bottom part 2 below the tapping hole 3 and the tapped quantity into the ladle 8 to the range of 0.5-4.0, the low carbon ferro-chromium is stably and continuously produced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20712787A JPS6452013A (en) | 1987-08-20 | 1987-08-20 | Production of low carbon ferro-chromium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20712787A JPS6452013A (en) | 1987-08-20 | 1987-08-20 | Production of low carbon ferro-chromium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6452013A true JPS6452013A (en) | 1989-02-28 |
| JPH0437125B2 JPH0437125B2 (en) | 1992-06-18 |
Family
ID=16534644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20712787A Granted JPS6452013A (en) | 1987-08-20 | 1987-08-20 | Production of low carbon ferro-chromium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6452013A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015175043A (en) * | 2014-03-17 | 2015-10-05 | Ｊｆｅマテリアル株式会社 | Manufacturing method of silicochromium and manufacturing method of ferrochromium |
| WO2021045174A1 (en) * | 2019-09-06 | 2021-03-11 | Ｊｆｅマテリアル株式会社 | Method for producing low-carbon ferrochromium |
| WO2021045173A1 (en) * | 2019-09-06 | 2021-03-11 | Ｊｆｅマテリアル株式会社 | Self-baking electrode and electrode paste for self-baking electrode |
| WO2021241538A1 (en) * | 2020-05-29 | 2021-12-02 | Ｊｆｅマテリアル株式会社 | Operation method of stationary electric furnace |
-
1987
- 1987-08-20 JP JP20712787A patent/JPS6452013A/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015175043A (en) * | 2014-03-17 | 2015-10-05 | Ｊｆｅマテリアル株式会社 | Manufacturing method of silicochromium and manufacturing method of ferrochromium |
| WO2021045174A1 (en) * | 2019-09-06 | 2021-03-11 | Ｊｆｅマテリアル株式会社 | Method for producing low-carbon ferrochromium |
| WO2021045173A1 (en) * | 2019-09-06 | 2021-03-11 | Ｊｆｅマテリアル株式会社 | Self-baking electrode and electrode paste for self-baking electrode |
| JPWO2021045173A1 (en) * | 2019-09-06 | 2021-10-21 | Ｊｆｅマテリアル株式会社 | Self-firing electrode and electrode paste for self-firing electrode |
| JPWO2021045174A1 (en) * | 2019-09-06 | 2021-11-18 | Ｊｆｅマテリアル株式会社 | Manufacturing method of low carbon ferrochrome |
| WO2021241538A1 (en) * | 2020-05-29 | 2021-12-02 | Ｊｆｅマテリアル株式会社 | Operation method of stationary electric furnace |
| JPWO2021241538A1 (en) * | 2020-05-29 | 2021-12-02 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0437125B2 (en) | 1992-06-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |