JPS552758A - Desulfurizing agent for molten iron - Google Patents
Desulfurizing agent for molten ironInfo
- Publication number
- JPS552758A JPS552758A JP7535978A JP7535978A JPS552758A JP S552758 A JPS552758 A JP S552758A JP 7535978 A JP7535978 A JP 7535978A JP 7535978 A JP7535978 A JP 7535978A JP S552758 A JPS552758 A JP S552758A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- cao
- molten iron
- desulfurizing
- slag
- 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
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
- C21C1/025—Agents used for dephosphorising or desulfurising
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
PURPOSE:The desulfurizing agent for the molten iron, which develops the excellent desulfurizing capacity and the good slag formability, and prevents the operational troubles due to the bridging phenomenon and the plugging of runners within the treating vessel, prepared by blending a specified amount of Al-Mg alloy with CaO. CONSTITUTION:5-30% Al-Mg alloy is blended with 70-95wt% CaO,which is then pulverized into the particle size smaller than about 0.105mm. The adhering moisture of the Al-Mg alloy is perfectly removed prior to use. Al included in the blended Al-Mg alloy bonds with O2 of the molten iron, and promotes the deoxidizing action; and Mg bonds with S and causes the desulfurizing reaction. The desulfurizing speed due to Mg is increased by the deoxidizing action due to Al; and Mg shows the desulfurization promoting effect, effective against CaO to be main desulfurizing agent. Moreover, the product Al2O3 of the desulfurization reacts on CaO forming the slag of low melting point, and makes good the flowability; hereby, the diffusion between the molten iron and the slag is made positive.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7535978A JPS552758A (en) | 1978-06-23 | 1978-06-23 | Desulfurizing agent for molten iron |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7535978A JPS552758A (en) | 1978-06-23 | 1978-06-23 | Desulfurizing agent for molten iron |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS552758A true JPS552758A (en) | 1980-01-10 |
Family
ID=13573942
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7535978A Pending JPS552758A (en) | 1978-06-23 | 1978-06-23 | Desulfurizing agent for molten iron |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS552758A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0256091A1 (en) * | 1986-01-27 | 1988-02-24 | The Dow Chemical Company | Magnesium calcium oxide composite |
-
1978
- 1978-06-23 JP JP7535978A patent/JPS552758A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0256091A1 (en) * | 1986-01-27 | 1988-02-24 | The Dow Chemical Company | Magnesium calcium oxide composite |
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