GB796200A - Improvements in and apparatus for carrying out chemical or physical processes involving finely divided solids and gases - Google Patents
Improvements in and apparatus for carrying out chemical or physical processes involving finely divided solids and gasesInfo
- Publication number
- GB796200A GB796200A GB512956A GB512956A GB796200A GB 796200 A GB796200 A GB 796200A GB 512956 A GB512956 A GB 512956A GB 512956 A GB512956 A GB 512956A GB 796200 A GB796200 A GB 796200A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fluidized bed
- ore
- gases
- zone
- air
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
- B01J8/24—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
- B01J8/36—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with fluidised bed through which there is an essentially horizontal flow of particles
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/48—Sulfur dioxide; Sulfurous acid
- C01B17/50—Preparation of sulfur dioxide
- C01B17/52—Preparation of sulfur dioxide by roasting sulfides
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/20—Purifying combustible gases containing carbon monoxide by treating with solids; Regenerating spent purifying masses
- C10K1/26—Regeneration of the purifying material contains also apparatus for the regeneration of the purifying material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B2700/00—Combustion apparatus for solid fuel
- F23B2700/009—Combustion apparatus for solid fuel adapted for use in various steam boilers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Abstract
<PICT:0796200/III/1> Fine-grained solid particles are fed to a fluidized bed from above and through the surface thereof whilst maintaining a gas pressure at the point of entry of said material higher than that above the remaining parts of the fluidized bed. The method may be applied to sulphide ore roasting, catalysis or heat exchange processes. As illustrated in the Figure, an ore-roasting furnace 1 lined with refractory ceramic contains a fluidized bed 2 supported upon a grid 3 through which air is blown from wind boxes 4 and 5. An ore such as pyrite is supplied to the furnace from hopper 8 by means of plate feeder 12 and falls through a zone 6 separated from the main gas collecting zone 2a by means of a partition 13 having openings 7 which can be closed by inserting bricks if desired, and a serrated lower edge. The zone is said to be in limited communication with the atmosphere through the unavoidable leakiness of the plate feeder. Air is introduced through a regulating valve 14 into the chamber 6 to maintain the slight excess pressure over that in the chamber 2a. Gases of the same composition as that introduced from the wind boxes and/or inert gases may be supplied above the fluidized bed. The roasted material is discharged through an outlet pipe 19: if desired air may be passed in through inlet 20 to assist the withdrawal. The wind chambers 4 and 5 may also be provided with outlets 18 for discharging ore. A bank of cooling elements 17 serves to maintain the roasting temperature and at the same time produce steam.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB34565A DE1018227B (en) | 1955-02-18 | 1955-02-18 | Process for carrying out chemical or physical exchange processes between finely divided solids and gases |
Publications (1)
Publication Number | Publication Date |
---|---|
GB796200A true GB796200A (en) | 1958-06-04 |
Family
ID=6964344
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB512956A Expired GB796200A (en) | 1955-02-18 | 1956-02-20 | Improvements in and apparatus for carrying out chemical or physical processes involving finely divided solids and gases |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE545244A (en) |
DE (1) | DE1018227B (en) |
GB (1) | GB796200A (en) |
NL (1) | NL99297C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4921874U (en) * | 1972-05-27 | 1974-02-23 | ||
AU2001246595B2 (en) * | 2000-03-16 | 2005-08-11 | Outotec Oyj | Method for regulating a roasting furnace |
-
0
- NL NL99297D patent/NL99297C/xx active
- BE BE545244D patent/BE545244A/xx unknown
-
1955
- 1955-02-18 DE DEB34565A patent/DE1018227B/en active Pending
-
1956
- 1956-02-20 GB GB512956A patent/GB796200A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4921874U (en) * | 1972-05-27 | 1974-02-23 | ||
JPS5120593Y2 (en) * | 1972-05-27 | 1976-05-29 | ||
AU2001246595B2 (en) * | 2000-03-16 | 2005-08-11 | Outotec Oyj | Method for regulating a roasting furnace |
Also Published As
Publication number | Publication date |
---|---|
NL99297C (en) | |
BE545244A (en) | |
DE1018227B (en) | 1957-10-24 |
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