GB1129994A - An improved process of producing iron concentrates from iron ores of low grade - Google Patents
An improved process of producing iron concentrates from iron ores of low gradeInfo
- Publication number
- GB1129994A GB1129994A GB4400964A GB4400964A GB1129994A GB 1129994 A GB1129994 A GB 1129994A GB 4400964 A GB4400964 A GB 4400964A GB 4400964 A GB4400964 A GB 4400964A GB 1129994 A GB1129994 A GB 1129994A
- Authority
- GB
- United Kingdom
- Prior art keywords
- iron
- ore
- added
- heating
- low grade
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title abstract 18
- 229910052742 iron Inorganic materials 0.000 title abstract 9
- 239000012141 concentrate Substances 0.000 title abstract 4
- 238000010438 heat treatment Methods 0.000 abstract 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 2
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 2
- 239000004927 clay Substances 0.000 abstract 2
- 238000001816 cooling Methods 0.000 abstract 2
- 239000004571 lime Substances 0.000 abstract 2
- 238000000926 separation method Methods 0.000 abstract 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 235000019738 Limestone Nutrition 0.000 abstract 1
- 229910004298 SiO 2 Inorganic materials 0.000 abstract 1
- 238000000498 ball milling Methods 0.000 abstract 1
- 229910052791 calcium Inorganic materials 0.000 abstract 1
- 239000011575 calcium Substances 0.000 abstract 1
- -1 calcium aluminates Chemical class 0.000 abstract 1
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052918 calcium silicate Inorganic materials 0.000 abstract 1
- 235000012241 calcium silicate Nutrition 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 239000000571 coke Substances 0.000 abstract 1
- 239000006028 limestone Substances 0.000 abstract 1
- 239000006148 magnetic separator Substances 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0086—Conditioning, transformation of reduced iron ores
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/008—Use of special additives or fluxing agents
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/08—Making spongy iron or liquid steel, by direct processes in rotary furnaces
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
1,129,994. Producing iron. G.K.N. STEEL CO. Ltd. Jan. 25, 1966 [oct. 28, 1964], No. 44009/64. Heading C7D. Iron e.g. sponge iron concentrate is produced from low grade ore containing clay by heating the ore under reducing conditions, e.g. at 1300- 1400‹C in a rotary kiln containing a CO atmosphere, to yield metallic iron, followed by cooling with or without wet ball-milling and then separation of the iron from the remaining residue e.g. using magnetic separators. Sufficient lime is added to the ore prior to the reduction heating to transform the SiO 2 and Al 2 O 3 of the clay on heating to dicalcium silicate and calcium aluminates, which fall to powder on subsequent cooling thereby facilitating the separation of the iron concentrate. The lime may be added by blending the crushed ore with powdered limestone, carbon e.g. coke breeze being also added in excess of that required for complete reduction. The separated iron concentrate, fabricated into, briquettes, may be used in a blast furnace (as scrap), an open hearth furnace or a converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4400964A GB1129994A (en) | 1964-10-28 | 1964-10-28 | An improved process of producing iron concentrates from iron ores of low grade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4400964A GB1129994A (en) | 1964-10-28 | 1964-10-28 | An improved process of producing iron concentrates from iron ores of low grade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1129994A true GB1129994A (en) | 1968-10-09 |
Family
ID=10431346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4400964A Expired GB1129994A (en) | 1964-10-28 | 1964-10-28 | An improved process of producing iron concentrates from iron ores of low grade |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1129994A (en) |
-
1964
- 1964-10-28 GB GB4400964A patent/GB1129994A/en not_active Expired
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