C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/337
C22B 13/06 (2006.01) C22B 9/05 (2006.01)
Patent
CA 1212244
TO ALL WHOM IT MAY CONCERN: BE IT KNOWN THAT, JOHN EDWIN BOWERS, of BNF METALS TECHNOLOGY CENTRE, of Grove Laboratories, Denchworth Road, Wantage, Oxfordshire, OX12 9BJ, England, a British Citizen, has invented certain and useful improvements in or relating to A CONTINUOUS METHOD OF REMOVING TIN FROM LEAD, of which the following is a specification. ABSTRACT OF THE DISCLOSURE CONTINUOUS METHOD OF REMOVING TIN FROM LEAD The invention relates to a continuous method of removing tin from lead. The method comprises maintaining a pool of molten lead at a temperature of from 510°C to 570°C, introducing molten lead into the pool, injecting chlorine and oxygen into the molten lead in an amount to react with tin present as an impurity in the lead to form a tin-containing dross and then separating the lead from the dross. Separation may either be performed in the reaction vessel itself or in a separate settlement vessel.
432123
B.n.f. Metals Technology Centre
Ridout & Maybee Llp
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