GB254389A - Improvements in or relating to the desulphuration of zinc ores - Google Patents
Improvements in or relating to the desulphuration of zinc oresInfo
- Publication number
- GB254389A GB254389A GB875425A GB875425A GB254389A GB 254389 A GB254389 A GB 254389A GB 875425 A GB875425 A GB 875425A GB 875425 A GB875425 A GB 875425A GB 254389 A GB254389 A GB 254389A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphur
- zinc
- carbon
- product
- roasted
- 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
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/02—Preliminary treatment of ores; Preliminary refining of zinc oxide
-
- 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
- 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)
- Manufacture And Refinement Of Metals (AREA)
Abstract
254,389. Jackson, W. J. Mellersh-, (Soc. Anon des Mines et Fonderies de Zinc de la Vieille-Montagne). April 1, 1925. Roasting.-In order to obtain complete elimination of sulphur from zinc ores such as zincblende or sulphide of zinc, and to obtain the product in the form of a porous grain favourable for the reduction process, the ore, in a fine state of division, is first roasted as completely as possible in a muffle or other roasting furnace. It is then thoroughly mixed with a small proportion of pulverized carbon, such as coke dust or slack coal. The proportion of carbon may vary according to the sulphur content of the roasted product, but is usually about 3 to 4 per cent. The mixture, which may be moistened with water, is charged into any suitable blast apparatus and heated by a source of heat such as a gas or oil burner to start combustion, a current of air or of oxidizing gas being blown or drawn through the charge. The remaining sulphides are converted into oxides, and the sulphates are decomposed by the carbon. The resulting product is in the form of a porous agglomerate containing only traces of sulphur. The sulphur dioxide produced in the process is recovered. Specifications 1535/11 and 119,223 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB875425A GB254389A (en) | 1925-04-01 | 1925-04-01 | Improvements in or relating to the desulphuration of zinc ores |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB875425A GB254389A (en) | 1925-04-01 | 1925-04-01 | Improvements in or relating to the desulphuration of zinc ores |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB254389A true GB254389A (en) | 1926-07-01 |
Family
ID=9858620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB875425A Expired GB254389A (en) | 1925-04-01 | 1925-04-01 | Improvements in or relating to the desulphuration of zinc ores |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB254389A (en) |
-
1925
- 1925-04-01 GB GB875425A patent/GB254389A/en not_active Expired
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