GB279797A - Method of enriching oxide iron-ores, flue dust from blast furnaces, burnt pyrites, purple-ore and the like - Google Patents
Method of enriching oxide iron-ores, flue dust from blast furnaces, burnt pyrites, purple-ore and the likeInfo
- Publication number
- GB279797A GB279797A GB23203/27A GB2320327A GB279797A GB 279797 A GB279797 A GB 279797A GB 23203/27 A GB23203/27 A GB 23203/27A GB 2320327 A GB2320327 A GB 2320327A GB 279797 A GB279797 A GB 279797A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ores
- flue dust
- oxide
- air
- purple
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/005—Pretreatment specially adapted for magnetic separation
- B03C1/015—Pretreatment specially adapted for magnetic separation by chemical treatment imparting magnetic properties to the material to be separated, e.g. roasting, reduction, oxidation
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
279,797. Aktiebolaget Ferriconcentrat, (Assignees of Mueller, H. A.). Oct. 28, 1926, [Convention date]. Treating ores to facilitate magnetic separation. -Weakly magnetic oxide iron ores. blast furnace flue dust, burnt pyrites, purple ore and the like are transformed by heating in a non-oxidizing atmosphere to a strongly magnetic form of ferric oxide and then separated in a low intensity magnetic separator. Oxide ores are heated at 600‹ C. for “ hour to ¢ hour preferably with a small amount of carbonaceous material, for instance, 0.25-0.5 per cent of powdered coal. Blast furnace flue dust containing ferric oxide and carbon in excess of the required amount is mixed with other ores not containing carbon. Carbonate ores are first heated in air to produce ferric oxide and are then treated as above, preferably in the absence of air. The material is cooled in the presence of air.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE279797X | 1926-10-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB279797A true GB279797A (en) | 1928-07-19 |
Family
ID=20306981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23203/27A Expired GB279797A (en) | 1926-10-28 | 1927-09-03 | Method of enriching oxide iron-ores, flue dust from blast furnaces, burnt pyrites, purple-ore and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB279797A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2147284A (en) * | 1983-09-30 | 1985-05-09 | Petroleo Brasileiro Sa | Process for obtaining a high surface area magnetite concentrate |
-
1927
- 1927-09-03 GB GB23203/27A patent/GB279797A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2147284A (en) * | 1983-09-30 | 1985-05-09 | Petroleo Brasileiro Sa | Process for obtaining a high surface area magnetite concentrate |
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