JPS5732351A - Preliminary reduction of chromium ore to manufacture ferrochromium - Google Patents
Preliminary reduction of chromium ore to manufacture ferrochromiumInfo
- Publication number
- JPS5732351A JPS5732351A JP10671780A JP10671780A JPS5732351A JP S5732351 A JPS5732351 A JP S5732351A JP 10671780 A JP10671780 A JP 10671780A JP 10671780 A JP10671780 A JP 10671780A JP S5732351 A JPS5732351 A JP S5732351A
- Authority
- JP
- Japan
- Prior art keywords
- ore
- solid
- liq
- fluidized bed
- reducing agent
- 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
PURPOSE: To reduce Cr and Fe oxides in powdered Cr ore to carbides in a solid phase at a superior reduction rate by heating a mixture of the ore with a liq. or solid agent in a fluidized bed reactor while fluidizing it with gases.
CONSTITUTION: A reducing gas as CO or H2 and an inert gas such as N2 are blown from a gas feeding inlet 3 of a fluidized bed reactor 1, and powder of Cr ore and a liq. reducing agent such as heavy oil or a solid carbon reducing agent such as slack coal are fed from an upper feeding inlet 2 and an inlet 5, respectively. While maintaining the internal temp. of the reactor at a relatively low temp. such as 1,100W 1,300°C, a fluidized bed 4 made of mixture of the Cr ore powder with the liq. or solid reducing agent is formed with the blown gases. Cr2O3 is reduced to Cr4C, etc. with carbon formed by the thermal decomposition of heavy oil or solid carbon of slack coal in a solid phase, and FEO to Fe3C, etc. with CO, H2 and solid carbon. Thus, the Cr ore is preliminarily reduced at 50W60% reduction rate.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10671780A JPS5732351A (en) | 1980-08-05 | 1980-08-05 | Preliminary reduction of chromium ore to manufacture ferrochromium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10671780A JPS5732351A (en) | 1980-08-05 | 1980-08-05 | Preliminary reduction of chromium ore to manufacture ferrochromium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5732351A true JPS5732351A (en) | 1982-02-22 |
Family
ID=14440699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10671780A Pending JPS5732351A (en) | 1980-08-05 | 1980-08-05 | Preliminary reduction of chromium ore to manufacture ferrochromium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5732351A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58199833A (en) * | 1982-05-15 | 1983-11-21 | Kawasaki Steel Corp | Preliminary reduction method of chromium ore |
| JPS59110742A (en) * | 1982-12-15 | 1984-06-26 | Kawasaki Steel Corp | Equipment for preliminarily reducing charomium ore |
-
1980
- 1980-08-05 JP JP10671780A patent/JPS5732351A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58199833A (en) * | 1982-05-15 | 1983-11-21 | Kawasaki Steel Corp | Preliminary reduction method of chromium ore |
| JPS59110742A (en) * | 1982-12-15 | 1984-06-26 | Kawasaki Steel Corp | Equipment for preliminarily reducing charomium ore |
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