GB674965A - Fluidized-solids systems for selectively recovering tin from ores as a volatized tin-compound - Google Patents
Fluidized-solids systems for selectively recovering tin from ores as a volatized tin-compoundInfo
- Publication number
- GB674965A GB674965A GB15772/49A GB1577249A GB674965A GB 674965 A GB674965 A GB 674965A GB 15772/49 A GB15772/49 A GB 15772/49A GB 1577249 A GB1577249 A GB 1577249A GB 674965 A GB674965 A GB 674965A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bed
- ore
- per cent
- conduit
- temperature
- 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
- 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
- C22B25/00—Obtaining tin
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (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
<PICT:0674965/III/1> A process of volatilizing tin-values in ores comprises upflowing a stream of hot scrubbing gases which yield at least 1 per cent by volume of unoxidized gaseous sulphur at solid-fluidizing velocity through a bed of finely divided ore particles maintained at a temperature which lies below the temperature at which solid particles in the bed tend to stick and thereby hamper fluidization. The bed temperature preferably lies within the range from 60 DEG C above and below the melting point of stannous sulphide (832 DEG C). In one form, sulphur-containing ore particles are fed into the upper bed 64 of a two-part reactor 11 via a conduit 42, and after treatment in the bed overflow down a conduit 35 into a lower ore-roasting bed 22, being removed therefrom by a conduit 23. Treatment gas (e.g. 83 per cent N. 7 per cent SO2, 10 per cent O2) composed of a mixture of air from pipe 25 and recycle gas is passed through the lower bed at a fluidizing velocity where the free oxygen combines with the sulphidic constituents and maintains the temperature of the bed at about 1100 DEG C. The hot gases rising from the lower bed (e.g. 83 per cent N, 3 per cent O, 14 per cent So2) then pass up through the fluidized upper bed 64, raising the temperature of the ore to 900 DEG C at which temperature being stannous sulphide in the ore is volatilized and the sulphur, formed by the decomposition of the pyrite in the ore is vaporized forming about 1 per cent of the gases in the upper bed and reacts with tin oxides in the ore to form more stannous sulphide which is also volatilized. Air passed in at 36, via a conduit 43, converts the stannous sulphide into stannic oxide and sulphur dioxide the resultant fume passing from the reactor, through a conduit 37, into a cyclone 65 where entrained ore particles are removed and into a bag filter 66 where the stannic oxide is removed. Part of the remaining gases is recycled to the retort via a pump 61. The reactor may have more than two beds, the upflowing gases from the lower bed passing through the remainder. When starting, the reactor may be first preheated by burning carbonaceous fuel and air supplied through the conduit 32 in the lower bed. The desulphurized ore removed from the lower bed, which is principally in the form of Fe3 O4, may be treated, e.g. by magnetic separation to recover the iron.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US674965XA | 1948-07-19 | 1948-07-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB674965A true GB674965A (en) | 1952-07-02 |
Family
ID=22076366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB15772/49A Expired GB674965A (en) | 1948-07-19 | 1949-06-14 | Fluidized-solids systems for selectively recovering tin from ores as a volatized tin-compound |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB674965A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113502397A (en) * | 2021-06-18 | 2021-10-15 | 昆明鼎邦科技股份有限公司 | Continuous vulcanization production equipment |
-
1949
- 1949-06-14 GB GB15772/49A patent/GB674965A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113502397A (en) * | 2021-06-18 | 2021-10-15 | 昆明鼎邦科技股份有限公司 | Continuous vulcanization production equipment |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4740240A (en) | Smelting process for recovering metals from fine-grained non-ferrous metal sulfide ores or concentrates | |
US2209331A (en) | Roasting process | |
US3271134A (en) | Extraction of zinc | |
US3145094A (en) | Process and apparatus for making steel from powdered iron ore | |
US4046853A (en) | Production of titanium tetrachloride | |
US4055621A (en) | Process for obtaining titanium tetrachloride, chlorine and iron oxide from ilmenite | |
US2954274A (en) | Metal chloride manufacture | |
GB674965A (en) | Fluidized-solids systems for selectively recovering tin from ores as a volatized tin-compound | |
GB408669A (en) | Recovery of sulphur | |
US4046854A (en) | Recovery of titanium tetrachloride | |
GB425365A (en) | Improvements in the treatment of pyrites and like sulphide ores to recover sulphur therefrom | |
US3300300A (en) | Method for the treatment of zinciferous metallurgical slags and apparatus therefor | |
US3803288A (en) | Recovery of sulfur and iron oxide from pyritic materials | |
GB677050A (en) | Roasting of arsenopyrite gold-bearing ores | |
US1134846A (en) | Process of preventing the escape of sulfur dioxid in smelting sulfid ores. | |
US2872294A (en) | Production of sulfur from pyrites | |
GB463122A (en) | Recovery of sulphur | |
JPS5839895B2 (en) | Chlorination method for ilmenite or similar titanium ores | |
US1992049A (en) | Roasting of plumbiferous pyrites | |
US1860585A (en) | Treatment of sulphide ores | |
US3298825A (en) | Process and furnace for separating volatile from non-volatile material | |
US1751067A (en) | Process of producing elemental sulphur | |
US2750275A (en) | Method of treating materials containing sulphides | |
GB394539A (en) | Roasting pyrites fines | |
GB374486A (en) | Process of making iron oxide and sulphur dioxide from iron sulphide ores |