GB1061772A - A process for the roasting of pyrites with the simultaneous reduction of ferric oxides to magnetite in a fluidized bed - Google Patents
A process for the roasting of pyrites with the simultaneous reduction of ferric oxides to magnetite in a fluidized bedInfo
- Publication number
- GB1061772A GB1061772A GB1151664A GB1151664A GB1061772A GB 1061772 A GB1061772 A GB 1061772A GB 1151664 A GB1151664 A GB 1151664A GB 1151664 A GB1151664 A GB 1151664A GB 1061772 A GB1061772 A GB 1061772A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pyrites
- ferric oxide
- zone
- magnetite
- roasting
- 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
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 title abstract 9
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 title abstract 8
- 238000000034 method Methods 0.000 title abstract 4
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 abstract 7
- 238000006243 chemical reaction Methods 0.000 abstract 6
- 239000007789 gas Substances 0.000 abstract 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract 3
- 239000005864 Sulphur Substances 0.000 abstract 3
- 238000002485 combustion reaction Methods 0.000 abstract 3
- 239000007787 solid Substances 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 2
- 239000001301 oxygen Substances 0.000 abstract 2
- 229910052760 oxygen Inorganic materials 0.000 abstract 2
- 239000003818 cinder Substances 0.000 abstract 1
- 239000000428 dust Substances 0.000 abstract 1
- 238000005243 fluidization Methods 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 239000007858 starting material Substances 0.000 abstract 1
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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/08—Ferroso-ferric oxide [Fe3O4]
-
- 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
- C22B1/10—Roasting processes in fluidised form
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
In a process for roasting pyrites with accompanying reduction of ferric oxides to magnetite in a fluidized bed, the starting materials (i.e. pyrites and ferric oxide ores) are simultaneously fed into the reaction zone of a furnace at 600-1000 DEG C., an amount of fluidizing and combustion air is simultaneously introduced so that there is no excess oxygen and the oxidation of the pyrites is effected partially by atmospheric oxygen and partially by the ferric oxide of the ore according to the equations:-2FeS2 --> S2 + 2FeS FeS + O2 --> SO2 + Fe3O4 Fe2O3 + S2 --> SO2 + Fe3O4 so that the sulphurous gases of the reaction do not contain elemental sulphur and at least 50% of the iron of the pyrites and of the ferric oxide is transformed into magnetite, which can be concentrated magnetically. The feed of ferric oxide and air for fluidization and combustion may be preheated before entering the reaction zone and this ferric oxide may be a pyrites cinder from a roasting carried out simultaneously in an adjacent roasting zone. Part of the sulphurous gases produced by the furnace may be recycled to the furnace after removal of dust. The endothermal character of some of the reaction may be supplemented by the combustion of an auxiliary combustible extraneous to the process, the gases of which, mixed with the solids, contribute to increasing turbulence in the reaction zone. In a modification of the process, the reaction zone is subdivided into two zones, the upper zone being fed with the ferric oxide ore and the lower with the pyrites. The hot gases containing elemental sulphur derived from the lower zone pass through the upper zone, where the sulphur is oxidized by means of the ferric oxide, which is transformed into magnetite. The solids of the upper zone leave the furnace either independently or through the lower zone together with the solids produced therein.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES28644663 | 1963-03-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1061772A true GB1061772A (en) | 1967-03-15 |
Family
ID=8435581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1151664A Expired GB1061772A (en) | 1963-03-26 | 1964-03-18 | A process for the roasting of pyrites with the simultaneous reduction of ferric oxides to magnetite in a fluidized bed |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE645546A (en) |
| GB (1) | GB1061772A (en) |
Cited By (2)
| 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 |
| CN111057839A (en) * | 2019-12-23 | 2020-04-24 | 中国科学院过程工程研究所 | Fluidization oxidation reduction magnetization roasting system and method for siderite |
-
1964
- 1964-03-18 GB GB1151664A patent/GB1061772A/en not_active Expired
- 1964-03-23 BE BE645546D patent/BE645546A/xx unknown
Cited By (2)
| 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 |
| CN111057839A (en) * | 2019-12-23 | 2020-04-24 | 中国科学院过程工程研究所 | Fluidization oxidation reduction magnetization roasting system and method for siderite |
Also Published As
| Publication number | Publication date |
|---|---|
| BE645546A (en) | 1964-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1521499A (en) | Process for the reduction of finely divided metal oxide-containing material | |
| US2528552A (en) | Process for magnetically roasting hematitic ore and ore materials | |
| GB1291911A (en) | Smelting of sulphide ores | |
| GB1364934A (en) | Recovery of metal values | |
| US2867506A (en) | Producing sulphur dioxide gas | |
| GB992855A (en) | Working up iron pyrite | |
| GB1410548A (en) | Pyrometallurgical process for treating solids | |
| GB1135755A (en) | A method for reducing a non-magnetic oxidic iron ore | |
| US3948639A (en) | Process and device for flash smelting sulphide ores and concentrates | |
| GB1061772A (en) | A process for the roasting of pyrites with the simultaneous reduction of ferric oxides to magnetite in a fluidized bed | |
| US2467039A (en) | Recovery of vanadium concentrate | |
| US1974886A (en) | Roasting of sulphide ores | |
| US1749125A (en) | Two-step sulphatizing roast | |
| US2772153A (en) | Roasting pyrites | |
| US3632312A (en) | Production of high-strength sulfur dioxide | |
| US3857701A (en) | Smelting of copper oxides to produce blister copper | |
| EP3080314B1 (en) | Arsenic removal from minerals | |
| GB1507941A (en) | Process and device for flash smelting of finely-divided sulphidic and/or oxidic ores or concentrates | |
| CA1200074A (en) | Process for production of metal calcines of low sulfur content | |
| ES286446A1 (en) | Fluidized bed procedure for the tissue of iron to magnetite pirate with simultaneous reduction of ferrous oxides to magnetite (Machine-translation by Google Translate, not legally binding) | |
| ES388478A1 (en) | Sulphide iron ore conversion oxidation to iron - oxide | |
| OA10080A (en) | Sulfide roasting with lime | |
| US3433624A (en) | Treatment of pulverulent materials | |
| US3301634A (en) | Process for decomposing manganese sulfate to form manganous oxide and sulfur dioxide | |
| RU2007482C1 (en) | Method of oxidizing roasting of pyrite-containing materials |