A procedure for the continuous extraction of copper and copper compounds contained in the lead. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements introduced in the object of the main patent nº 302,999, issued on November 25, 1964, by "A procedure for the continuous extraction of copper and copper compounds contained in lead", by liquefaction in a lead bath, in that there is a temperature drop from top to bottom, characterized in that the liquefaction process takes place in a column of vertical lead, to which the lead contaminated by the top is fed, adjusting the fall in temperature in the column at a temperature in the upper part of about 1070 to 1250º C, preferably of about 1100 to 1170º C, and at a temperature on the bottom approximately equal to the eutectic temperature, and copper being extracted by the bottom of the lead column, while that the liquid phase rich in copper is removed from the surface of the lead column. (Machine-translation by Google Translate, not legally binding)