GB492901A - Process for dressing iron ores - Google Patents
Process for dressing iron oresInfo
- Publication number
- GB492901A GB492901A GB9026/37A GB902637A GB492901A GB 492901 A GB492901 A GB 492901A GB 9026/37 A GB9026/37 A GB 9026/37A GB 902637 A GB902637 A GB 902637A GB 492901 A GB492901 A GB 492901A
- Authority
- GB
- United Kingdom
- Prior art keywords
- furnace
- heating
- fe2o3
- feo
- ores
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
-
- 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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
- B03B1/02—Preparatory heating
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Iron (AREA)
Abstract
A process for dressing iron ores containing constituents which are respectively rich and poor in iron comprises heating them in a furnace wherein heating flames are provided at a number of points distributed along the length of the furnace, the ores being caused to travel through the furnace preferably in counterflow to the heating gases generated by the flames, and the heating of the ores being carried to such an extent that on the constituents rich in iron there are formed by reduction shells of FeO on cores of Fe2O3, or by oxidation shells of Fe2O3 on cores of FeO, or by alternate reduction and oxidation a number of layers of Fe3O4 between layers of FeO and Fe2O3. The furnace may be a rotary tube furnace, or a multi-hearth furnace provided with stirrers, and reducing or oxidizing conditions may be maintained in a part only of the furnace. Reducing gases may be introduced through a tube mounted concentrically in the furnace and extending into a reducing zone.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE492901X | 1936-05-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB492901A true GB492901A (en) | 1938-09-29 |
Family
ID=6544482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9026/37A Expired GB492901A (en) | 1936-05-06 | 1937-03-30 | Process for dressing iron ores |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB492901A (en) |
-
1937
- 1937-03-30 GB GB9026/37A patent/GB492901A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB492901A (en) | Process for dressing iron ores | |
| GB619886A (en) | Improvements in or relating to the deironing of chromium ores | |
| JPS5261122A (en) | Manufacturing method of high tension steel having low temperature tena city | |
| GB371054A (en) | Improvements in or relating to the heat treatment of steel | |
| GB214205A (en) | Improved manufacture of puddled iron | |
| GB429940A (en) | Improvements in or relating to annealing processes and furnaces | |
| SU94406A1 (en) | The method of refining tin iron bronze from iron with copper silicate | |
| GB265213A (en) | Process for the purification of metals | |
| GB388004A (en) | Improved manufacture of alloy steels | |
| FR611572A (en) | Process and furnace for smelting and refining iron, steel and metals in deck furnaces | |
| FR812933A (en) | Process for the enrichment of oxidized iron ores and ores associated with iron oxides, excluding iron pyrites | |
| GB434846A (en) | Improvements in the manufacture of articles from malleable cast iron | |
| CA297612A (en) | Furnace for treating refractory ores containing precious metals | |
| GB427567A (en) | Improvements in and relating to agglomerating, binding, and sintering processes | |
| GB321685A (en) | Improvements in or relating to the recovery of copper and other metals from copper bearing ores | |
| GB147458A (en) | Process for producing ferro-chromium that is poor in carbon | |
| GB421856A (en) | Method of making chromium steel | |
| GB399460A (en) | Process for the production of high-grade steel | |
| JPS51149115A (en) | A molten metal treatment process | |
| AU979727A (en) | Method of enriching iron ores, blast furnace mould, burnt pyrites, purple-ore andthe like | |
| GB424376A (en) | A process for roasting zinc blende or other sulphides | |
| GB343618A (en) | Process and apparatus for the production of spongy iron from iron ores | |
| GB234434A (en) | Process for the decarbonisation of cast iron or of other metals | |
| FR2031223A5 (en) | Annealing furnace for automatic annealing - of steel alloy and high speed steel | |
| GB282365A (en) | Improvements in or relating to processes for the production of pure iron |