GB701555A - Autogenous roasting of sulphide ore concentrates - Google Patents
Autogenous roasting of sulphide ore concentratesInfo
- Publication number
- GB701555A GB701555A GB27334/51A GB2733451A GB701555A GB 701555 A GB701555 A GB 701555A GB 27334/51 A GB27334/51 A GB 27334/51A GB 2733451 A GB2733451 A GB 2733451A GB 701555 A GB701555 A GB 701555A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pellets
- roasting
- concentrate
- zones
- sulphide
- 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
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (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 roasting a sulphide or concentrate, e.g. zinc sulphide or pyrites concentrate, by maintaining an ignited porous body of mobile pellets of the ore concentrate in a vessel rotatable about its substantially horizontal major axis, and introducing air downwardly into the body of moving pellets below the surface thereof, e.g. as disclosed in Specification 701,556, volatilization of any cadmium, lead, arsenic, silver and present is effected by introducing the air at a plurality of axially spaced points under such conditions as to establish and maintain a plurality of non-contiguous brightly incandescent roasting zones separated from each other by a visibly less bright mass of moving pellets. The temperature of the roasting zones may thus be 1050 DEG -1200 DEG C., with the adjacent zones 50 DEG -100 DEG C. lower. The volatilized solids are separated from the roaster gas by a combination of cyclone separation and electrostatic precipitation; the zinc and cadmium content is dissolved in sulphuric acid, and the solution used as a binder in the production of the pellets. The pellets, which term includes short extruded rods &c. may be up to 1/2 inch diameter.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US701555XA | 1950-12-21 | 1950-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB701555A true GB701555A (en) | 1953-12-30 |
Family
ID=22093486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27334/51A Expired GB701555A (en) | 1950-12-21 | 1951-11-21 | Autogenous roasting of sulphide ore concentrates |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB701555A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2855287A (en) * | 1955-09-26 | 1958-10-07 | New Jersey Zinc Co | Fluid bed roasting method for separating and recovering cd-pb-zn components |
| WO1997033007A1 (en) * | 1996-03-07 | 1997-09-12 | N.V. Union Miniere S.A. | Process for recovery of zinc from sphalerite containing ores or concentrates |
-
1951
- 1951-11-21 GB GB27334/51A patent/GB701555A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2855287A (en) * | 1955-09-26 | 1958-10-07 | New Jersey Zinc Co | Fluid bed roasting method for separating and recovering cd-pb-zn components |
| WO1997033007A1 (en) * | 1996-03-07 | 1997-09-12 | N.V. Union Miniere S.A. | Process for recovery of zinc from sphalerite containing ores or concentrates |
| US6162346A (en) * | 1996-03-07 | 2000-12-19 | N.V. Union Miniere S.A. | Process for recovery of zinc from sphalerite containing ores or concentrates |
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