GB677050A - Roasting of arsenopyrite gold-bearing ores - Google Patents
Roasting of arsenopyrite gold-bearing oresInfo
- Publication number
- GB677050A GB677050A GB28640/50A GB2864050A GB677050A GB 677050 A GB677050 A GB 677050A GB 28640/50 A GB28640/50 A GB 28640/50A GB 2864050 A GB2864050 A GB 2864050A GB 677050 A GB677050 A GB 677050A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bed
- ore
- pipe
- solids
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
Arseno-pyrite gold-bearing ore solids are roasted by fluidized-solids technique firstly in a bed in which the amount of oxygen in the fluidizing gas is sufficient to oxidize the ore to yield volatile arsenic compounds (arsenious sulphide and oxide), but insufficient to yield non-volatile arsenic compounds (arsenic pentoxide), and then in a bed in which the oxygen-bearing fluidizing gas is sufficient for complete oxidation. The solids are thus rendered particularly amenable to cyaniding. As shown, finely divided ore is fed into a refractory-lined vessel to form a bed 17 and after the preliminary roasting therein, at a temperature above 450 DEG C, but below that causing fusion, passes through pipe 19 to the second bed 18 whence after being roasted, suitably at 625 DEG C, but below fusion, it is discharged through pipe 29. In starting the process, air is supplied through conduit 40 together with natural gas, &c., or liquid fuel may <PICT:0677050/III/1> be supplied through pipe 70, and inert material is fed to the beds. When a temperature of 800 DEG C is reached, the inert material is replaced by ore, and the auxiliary fuel is shut down. The oxidizing gas passes from the lower to the upper bed via a cyclone 51, and from the upper bed to cyclone 36, whence dust is passed via pipe 57 to the lower bed. The temperature may be controlled by water sprays 72.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US677050XA | 1949-11-23 | 1949-11-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB677050A true GB677050A (en) | 1952-08-06 |
Family
ID=22077807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28640/50A Expired GB677050A (en) | 1949-11-23 | 1950-11-23 | Roasting of arsenopyrite gold-bearing ores |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB677050A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1076646B (en) * | 1958-09-10 | 1960-03-03 | Basf Ag | Process for the production of gases containing sulfur dioxide |
| EP0128887A1 (en) * | 1983-06-06 | 1984-12-19 | Boliden Aktiebolag | A method for processing copper smelting materials and the like containing high percentages of arsenic and/or antimony |
| US5254320A (en) * | 1990-12-17 | 1993-10-19 | A. Ahlstrom Corporation | Method for roasting sulphide ores |
| WO1997021842A1 (en) * | 1995-12-13 | 1997-06-19 | Metallgesellschaft Aktiengesellschaft | Process for thermal treatment of refractory gold ores |
| WO2016180624A1 (en) * | 2015-05-12 | 2016-11-17 | Outotec (Finland) Oy | Method for partial roasting of copper and/or gold bearing concentrates |
-
1950
- 1950-11-23 GB GB28640/50A patent/GB677050A/en not_active Expired
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1076646B (en) * | 1958-09-10 | 1960-03-03 | Basf Ag | Process for the production of gases containing sulfur dioxide |
| EP0128887A1 (en) * | 1983-06-06 | 1984-12-19 | Boliden Aktiebolag | A method for processing copper smelting materials and the like containing high percentages of arsenic and/or antimony |
| US4626279A (en) * | 1983-06-06 | 1986-12-02 | Boliden Aktiebolag | Method for processing copper smelting materials and the like containing high percentages of arsenic and/or antimony |
| US5254320A (en) * | 1990-12-17 | 1993-10-19 | A. Ahlstrom Corporation | Method for roasting sulphide ores |
| WO1997021842A1 (en) * | 1995-12-13 | 1997-06-19 | Metallgesellschaft Aktiengesellschaft | Process for thermal treatment of refractory gold ores |
| WO2016180624A1 (en) * | 2015-05-12 | 2016-11-17 | Outotec (Finland) Oy | Method for partial roasting of copper and/or gold bearing concentrates |
| DE102015107435A1 (en) * | 2015-05-12 | 2016-11-17 | Outotec (Finland) Oy | Process for the partial roasting of copper- and / or gold-containing concentrates |
| KR20170140357A (en) * | 2015-05-12 | 2017-12-20 | 오토텍 (핀랜드) 오와이 | Method for partial roasting of copper and/or gold bearing concentrates |
| EA032531B1 (en) * | 2015-05-12 | 2019-06-28 | Оутотек (Финлэнд) Ой | Method for partial roasting of copper, nickel and/or gold bearing concentrates |
| KR101995658B1 (en) | 2015-05-12 | 2019-07-02 | 오토텍 (핀랜드) 오와이 | Method for partial roasting of copper and/or gold bearing concentrates |
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