GB697765A - Improvements in smelting of zinciferous ore - Google Patents
Improvements in smelting of zinciferous oreInfo
- Publication number
- GB697765A GB697765A GB17883/51A GB1788351A GB697765A GB 697765 A GB697765 A GB 697765A GB 17883/51 A GB17883/51 A GB 17883/51A GB 1788351 A GB1788351 A GB 1788351A GB 697765 A GB697765 A GB 697765A
- Authority
- GB
- United Kingdom
- Prior art keywords
- charge
- slag
- zinc
- iron
- arc
- 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
- C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
- C22B4/04—Heavy metals
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
In a method of smelting zinciferous ore to produce zinc vapour capable of being condensed predominantly to massive zinc metal, a charge of the ore and solid carbonaceous reducing material is introduced into a furnace on to a body of slag which is heated to a temperature not greater than 1450 DEG C by an arc in contact with the slag and struck from an electrode terminating above the slag surface, the charge being composed of oxidized zinc ore containing (a) iron and at least one of the metals copper, silver and gold, (b) an amount of sulphur sufficient to form a matte with substantially all of the said metals and at least a portion of the iron, (c) an amount of carbonaceous reducing agent sufficient to reduce all the zinc oxide. The charge is delivered adjacent to the furnace side walls as a loose mass of discrete particles in such as way as to form a sloping bank terminating at the surface of the slag and out of direct contact with the electrode and arc. The heat necessary for smelting is imparted to the charge by radiation from the arc and through contact of the charge with the slag, the slag resulting from smelting being free from readily reducible oxides, except possibly for a proportion of iron oxide not sulphided by the sulphur constituent, before it comes into contact with the arc. The sulphur content of the charge may be provided by residual sulphur in incompletely roasted sulphidic zinc ore or by addition of extraneous iron sulphide. The amount of reducing agent used may be sufficient not only to reduce the zinc oxide but also to reduce to iron any non-sulphided iron oxide in the charge, whereby a body of molten iron is formed underlying the slag and matte. The zinc vapour evolved together with any cadmium and lead is condensed to massive zinc metal. The cadmium and lead may be separated from the zinc in a fractionating column. Specifications 601,246, 601,247, 620,644, 648,529 and 657,205 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US697765XA | 1950-08-25 | 1950-08-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB697765A true GB697765A (en) | 1953-09-30 |
Family
ID=22091146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17883/51A Expired GB697765A (en) | 1950-08-25 | 1951-07-27 | Improvements in smelting of zinciferous ore |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB697765A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5443614A (en) * | 1994-07-28 | 1995-08-22 | Noranda, Inc. | Direct smelting or zinc concentrates and residues |
-
1951
- 1951-07-27 GB GB17883/51A patent/GB697765A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5443614A (en) * | 1994-07-28 | 1995-08-22 | Noranda, Inc. | Direct smelting or zinc concentrates and residues |
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