GB990522A - Roasting process - Google Patents
Roasting processInfo
- Publication number
- GB990522A GB990522A GB200062A GB200062A GB990522A GB 990522 A GB990522 A GB 990522A GB 200062 A GB200062 A GB 200062A GB 200062 A GB200062 A GB 200062A GB 990522 A GB990522 A GB 990522A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnetite
- sulphuric acid
- ammonium carbonate
- sulphide
- sulphur
- 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
- C01B17/52—Preparation of sulfur dioxide by roasting sulfides
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Iron (AREA)
Abstract
A process for roasting iron sulphides, which may be contaminated with copper, nickel or cobalt, to form sulphur dioxide suitable for sulphuric acid production and magnetic capable of being leached to remove the above-mentioned impurities is characterized by reacting the sulphide at 700 DEG to 900 DEG C. with 94 to 103% wt. of the oxygen required to oxidize the total sulphide sulphur content to sulphur dioxide and the total iron content to magnetite, thus producing sulphur dioxide substantially free from sulphur trioxide and magnetite substantially free from ferric oxide, separating the product solid and gaseous phases, and cooling the magnetite under non-oxidizing conditions. Preferably, heat is extracted from the reaction and reaction is effected in a bed of the sulphide fluidized by the passage of oxygen therethrough. In specific examples the magnetite thus prepared is leached in the presence of air to remove copper by (1) dilute sulphuric acid, (2) aqueous ferric sulphate containing sulphuric acid, (3) ammoniacal ammonium carbonate, (4) ammoniacal ammonium carbonate containing potassium persulphate, (5) aqueous potassium persulphate containing sulphuric acid, and (6) cupric ammonium carbonate solution followed by ammoniacal ammonium carbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB200062A GB990522A (en) | 1962-01-19 | 1962-01-19 | Roasting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB200062A GB990522A (en) | 1962-01-19 | 1962-01-19 | Roasting process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB990522A true GB990522A (en) | 1965-04-28 |
Family
ID=9731845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB200062A Expired GB990522A (en) | 1962-01-19 | 1962-01-19 | Roasting process |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB990522A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114737059A (en) * | 2022-04-24 | 2022-07-12 | 西安建筑科技大学 | Method for treating cyaniding tailings by adopting oxygen-free roasting-persulfate leaching combined technology |
-
1962
- 1962-01-19 GB GB200062A patent/GB990522A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114737059A (en) * | 2022-04-24 | 2022-07-12 | 西安建筑科技大学 | Method for treating cyaniding tailings by adopting oxygen-free roasting-persulfate leaching combined technology |
| CN114737059B (en) * | 2022-04-24 | 2024-03-01 | 西安建筑科技大学 | Method for treating cyanide tailings by adopting anaerobic roasting-persulfate leaching combined technology |
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