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
GB22198/39A
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.)
NAT LEAD CO
NL Industries Inc
Original Assignee
NAT LEAD CO
NL Industries Inc
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 NAT LEAD CO, NL Industries IncfiledCriticalNAT LEAD CO
Publication of GB532135ApublicationCriticalpatent/GB532135A/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
C22B13/00—Obtaining lead
C22B13/06—Refining
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
532,135. Lead; lead alloys. NATIONAL LEAD CO. July 31, 1939, No. 22198. Convention date, Nov. 10, 1938. [Class 82 (i)] Zinc is removed from lead and lead alloys by agitating the molten lead or alloy with ammonium chloride and removing the zinc chloride formed. The operation may be effected at 400-475‹C. The treatment of an alloy of 60 per cent. of lead and 40 per cent. of tin is referred to.
GB22198/39A1938-11-101939-07-31Improvements in or relating to a method for removing zinc from lead and lead alloys
ExpiredGB532135A
(en)