GB760031A - Improvements relating to processes for the removal of sulphur from liquid blast furnace slag - Google Patents
Improvements relating to processes for the removal of sulphur from liquid blast furnace slagInfo
- Publication number
- GB760031A GB760031A GB3418753A GB3418753A GB760031A GB 760031 A GB760031 A GB 760031A GB 3418753 A GB3418753 A GB 3418753A GB 3418753 A GB3418753 A GB 3418753A GB 760031 A GB760031 A GB 760031A
- Authority
- GB
- United Kingdom
- Prior art keywords
- slag
- surface layer
- sulphur
- flames
- desulphurized
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
- C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
- C21B2100/42—Sulphur removal
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
- C21B2400/034—Stirring or agitating by pressurised fluids or by moving apparatus
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
Liquid blast-furnace slag is desulphurized, e.g. before being blown into slag wool, by treating the surface of the slag in an open hearth furnace with flames containing free oxygen to oxidize the sulphur in the slag to SO2, and intermittently withdrawing the surface layer from which the sulphur has been removed. The bath of slag has flames played on the large surface presented to the atmosphere, and the desulphurized surface layer is withdrawn intermittently or continuously, e.g. by inclining the hearth or through adjustable outlets, while the surface layer is continually replaced by stirring, shaking or vibration. The slag may be further treated with flames containing free oxygen, while flowing along a trough with continued renewal of the surface layer by stirring, mechanical shaking, or ultrasonic vibration.ALSO:Liquid blast-furnace slag is desulphurized, e.g. before being blown into slag wool, by treating the surface of the slag in an open hearth furnace with flames containing free oxygen to oxidise the sulphur in the slag to SO2, and intermittently withdrawing the surface layer from which the sulphur has been removed. The bath of slag has flames played on the large surface presented to the atmosphere, and the desulphurized surface layer is withdrawn intermittently or continuously, e.g. by inclining the hearth or through adjustable outlets, while the surface layer is continually replaced by stirring shaking, or vibration. The slag may be further treated with flames containing free oxygen, while flowing along a trough with continued renewal of the surface layer by stirring, mechanical shaking, or ultrasonic vibration.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE760031X | 1952-12-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB760031A true GB760031A (en) | 1956-10-31 |
Family
ID=6660686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3418753A Expired GB760031A (en) | 1952-12-08 | 1953-12-08 | Improvements relating to processes for the removal of sulphur from liquid blast furnace slag |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB760031A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3175900A (en) * | 1958-06-18 | 1965-03-30 | Independence Foundation | Process for the recovery of iron and uranium from slags, boiler waste and the like |
-
1953
- 1953-12-08 GB GB3418753A patent/GB760031A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3175900A (en) * | 1958-06-18 | 1965-03-30 | Independence Foundation | Process for the recovery of iron and uranium from slags, boiler waste and the like |
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