DE3164884D1
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1984-08-23
Process for the extraction of precious metals from concentrates thereof
PT75891B
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1985-10-04
Process for metal sulphide extraction
DE3176865D1
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1988-10-13
Method and apparatus for reclaiming metals from metallic scrap material
JPS56142834A
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1981-11-07
Reagent and method for extracting copper
ZM8780A1
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1981-10-21
Method and apparatus for the pyrometallurgical extraction of copper
GB2069472B
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1984-06-27
Process for recovering precious metals
ZA81571B
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1982-03-31
Process for the recovery of copper and zinc values from sulphidic ore
ZM8183A1
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1984-09-21
Process for the extraction of metal values and novel metal extractants
ZA817028B
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1982-09-29
Method for decreasing metal losses in non-ferrous smelting operations
ZA831798B
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1984-02-29
Method and apparatus for in-situ mining by leaching ores containing metal values
GB2133004B
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1986-06-11
Process for the extraction of metal values and novel metal extractants
BG31671A1
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1982-03-15
Method for extraction of copper, sulfur and rare metals from wastes after flotation of copper- pyrite ores
ZA856246B
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1986-03-26
Smelting process for recovering metals,and apparatus for carrying out that process
GB2128973B
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1986-08-13
Sinter method and plant for separating non-ferrous metals
JPS57140837A
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1982-08-31
Method of leaching copper and arsenic from copper dross
ZA851489B
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1985-11-27
Process for hydrometallurgical extraction of precious metals
AU1633183A
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1984-01-05
Control device for metal ore extraction process
ZA811609B
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1982-11-24
Method for extracting heavy metals from sulphurated mineral concentrates
ZA813249B
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1982-05-26
Method of extraction of metals from low grade ores
AU536838B2
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1984-05-24
Method and apparatus for leaching metal bearing ores
BG46997A1
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1990-04-16
Method for underground extraction of metals from ores
BG34844A1
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1983-12-15
Method for removing copper, zinc and sulphur from roasted pyrite
PL237713A1
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1984-02-13
Method of recovery of cobalt from wastes formed especially during processing of sintered carbides scrap
BG34845A1
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1983-12-15
Device and method for copper recovery from slags
BG36126A1
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1984-09-14
Method for biological extraction of non- ferrous metals