GB656143A - Improvements in metallurgy - Google Patents
Improvements in metallurgyInfo
- Publication number
- GB656143A GB656143A GB31722/47A GB3172247A GB656143A GB 656143 A GB656143 A GB 656143A GB 31722/47 A GB31722/47 A GB 31722/47A GB 3172247 A GB3172247 A GB 3172247A GB 656143 A GB656143 A GB 656143A
- Authority
- GB
- United Kingdom
- Prior art keywords
- zinc
- matte
- copper
- acid
- hydrogen 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
- 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
- C22B19/20—Obtaining zinc otherwise than by distilling
- C22B19/22—Obtaining zinc otherwise than by distilling with leaching with acids
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Zinc is recovered from matte containing sulphides of iron and zinc by digesting the matte with aqueous sulphuric acid, controlling the digestion to produce (1) an aqueous solution of ferrous sulphate substantially free from all other elements present in the original matter, (2) hydrogen sulphide containing the sulphur combined with the iron of the matte, (3) one or more solid products containing substantially all the zinc, and separating the solution from the products. The finely divided solid matte, obtained by smelting iron sulphide ore, may be treated at above 25 DEG C., say 50-70 DEG C., countercurrent in a series of vats by continuously introducing raw matte into the first vat and acid into the last vat of the series to produce a neutral, saturated solution of ferrous sulphate and a solid residue containing, besides zinc sulphide, the sulphides of cobalt, copper, gold, nickel, platinum, or silver. Part of the zinc may be recovered as zinc sulphate from a intermediate stage. A residue containing copper and zinc sulphides may be separated either (1) by roasting in air, digesting the oxide product with sulphuric acid and precipitating the copper with hydrogen sulphide or (2) by roasting in air with sulphuric acid, forming an aqueous solution of the sulphates and precipitating the copper with hydrogen sulphide. The hydrogen sulphide may be that from the acid matte treatment and the resulting zinc sulphate solution may be returned to the acid matte treatment. Specifications 566,375 and 656,141 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US656143XA | 1946-12-09 | 1946-12-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB656143A true GB656143A (en) | 1951-08-15 |
Family
ID=22063927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31722/47A Expired GB656143A (en) | 1946-12-09 | 1947-12-01 | Improvements in metallurgy |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB656143A (en) |
-
1947
- 1947-12-01 GB GB31722/47A patent/GB656143A/en not_active Expired
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