GB846152A - Improvements in or relating to the separation of lead and zinc - Google Patents
Improvements in or relating to the separation of lead and zincInfo
- Publication number
- GB846152A GB846152A GB3263957A GB3263957A GB846152A GB 846152 A GB846152 A GB 846152A GB 3263957 A GB3263957 A GB 3263957A GB 3263957 A GB3263957 A GB 3263957A GB 846152 A GB846152 A GB 846152A
- Authority
- GB
- United Kingdom
- Prior art keywords
- zinc
- shelves
- lead
- condensed
- annular
- 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
- C22B19/04—Obtaining zinc by distilling
-
- 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
- C22B19/32—Refining zinc
Abstract
846,152. Distilling zinc. NATIONAL SMELTING CO. Ltd. Sept. 4, 1958 [Oct. 18, 1957], No. 32639/57. Class 82(1) Zinc is separated from zinc of low lead content by distillation under vacuum at a temperature of 450-500‹ C. The zinc of low lead content may be obtained by distillation from zinc-containing lead under vacuum, the vapours being condensed in a circulating stream of molten zinc at a lower temperature, zinc being simultaneously evaporated from this circulating stream and condensed at a still lower temperature. In the apparatus shown m Fig. 1 zinc-containing lead enters by pipe 2 to fill an annular well 3 and overflows lip 7 to flow downwards over the inner surface of wall 5. Zinc vapour contaminated with lead passes to an annular system of shelves comprising outward facing shelves 13 and inward facing shelves 12 over which molten zinc flows from annular trough 17. The vapours condense on the shelves 13 and substantially pure zinc vapour is simultaneously formed by evaporation from shelves 12 to be condensed on a condenser 21 which is cooled by cooling coils 21a to form a solid deposit of zinc 20. At a certain thickness of the deposit 20 the zinc vapour condenses as liquid and drips into tube 25 from which it is withdrawn. The leadcontaining zinc flowing over shelves 12, 13 is collected in annular trough 14a, passes to vessel 14 in which zinc-saturated lead separates and is removed by overflow 18, the remaining zinc being pumped through tube 16 to trough 17. Vacuum is maintained via pipe 24, a cold trap 23 and the interior of condenser 21 in which a radiant heater 22 prevents the formation of accretions of solid zinc. Specifications 685,484 and 711,954 are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3263957A GB846152A (en) | 1957-10-18 | 1957-10-18 | Improvements in or relating to the separation of lead and zinc |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3263957A GB846152A (en) | 1957-10-18 | 1957-10-18 | Improvements in or relating to the separation of lead and zinc |
Publications (1)
Publication Number | Publication Date |
---|---|
GB846152A true GB846152A (en) | 1960-08-24 |
Family
ID=10341770
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3263957A Expired GB846152A (en) | 1957-10-18 | 1957-10-18 | Improvements in or relating to the separation of lead and zinc |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB846152A (en) |
-
1957
- 1957-10-18 GB GB3263957A patent/GB846152A/en not_active Expired
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