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
Application number
GB2633/53A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aurubis AG
Original Assignee
Norddeutsche Affinerie AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Norddeutsche Affinerie AGfiledCriticalNorddeutsche Affinerie AG
Publication of GB719196ApublicationCriticalpatent/GB719196A/en
C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
C22B15/00—Obtaining copper
C22B15/0026—Pyrometallurgy
C22B15/006—Pyrometallurgy working up of molten copper, e.g. refining
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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
In a process of deoxidizing molten copper and copper alloys, a reducing atmosphere containing at least 5 per cent of a mixture of carbon monoxide and hydrogen is maintained above and in direct contact with the molten metal in a furnace, and a neutral gas or vapour such as steam introduced into the molten metal to effect intensive stirring. Pulverized coal and gas or oil may be burnt above the metal to maintain the reducing atmosphere, which may contain 9-10 per cent. of the gas mixture.
GB2633/53A1952-02-041953-01-29Process for the deoxidation of copper and copper alloys
ExpiredGB719196A
(en)