Recovery of lead from batteries
Номер патента: GB1535025A
Опубликовано: 06-12-1978
Автор(ы):
Принадлежит: Gesellschaft zur Foerderung der Forschung an der Eidgenoessischen Technischen Hochschule
Опубликовано: 06-12-1978
Автор(ы):
Принадлежит: Gesellschaft zur Foerderung der Forschung an der Eidgenoessischen Technischen Hochschule
Реферат: 1535025 Recovering lead from batteries GES ZUR FORDERUNG DER FORSCHUNG AN DER EIDGENOSSISCHEN TECHNISCHEN HOCHSCHULE 29 April 1977 [14 May 1976] 17967/77 Heading C7B [Also in Division H1] Scrap lead battery material comprising antimonial and "soft" lead, lead oxide and sulphate is comminuted and freed from acid, treated with alkali metal or NH 4 hydroxide or carbonate of at least 5 molar to dissolve the oxide and sulphate and the solution obtained separated from metallic lead and electrolyzed to recover powdery or spongy Pb. A polyamino and/or hydroxy organic additive may be included e.g. molasses, crude sugar, citrate or tartrate. Any plastics parts may be separated by gravity while soft and antimonial Pb are separately recovered by screening. A diaphragm cell may communicate with the dissolving zone via a perforated solids-impermeable wall.
Electrolytic recovery of lead from scrap
Номер патента: US4650553A. Автор: William J. Tuszynski,Alfred F. Felgendreger,Ashley D. Nevers. Владелец: Pennwalt Corp. Дата публикации: 1987-03-17.