C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
23/100, 53/340,
C22B 3/02 (2006.01) C01D 5/06 (2006.01) C22B 3/00 (2006.01) C22B 13/08 (2006.01) C22B 13/10 (2006.01) C22B 5/10 (2006.01)
Patent
CA 1190401
ABSTRACT OF THE DISCLOSURE The invention described herein is a process for treat- ing sulphated lead compounds, more particularly those coming from exhausted storage batteries, in order to recover metallic lead and a high-purity sulphate, said process comprising subjecting said sulphated compounds to leaching with sodium carbonate in aqueous solution, collecting on a filter the lead carbonate thus obtained from the sodium sulphate which remains dissolved, sub- jecting the lead carbonate to reduction to metallic lead, separa- ting the sodium sulphate by crystallization from the filtrates and recycling the mother liquors of crystallization to the leach- ing stage. The invention also provides an installation for per- forming the above pr .
401814
Marks & Clerk
Tonolli Costruzioni S.p.a.
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