New technique of fire refining method for bullion lead

1987 
Refining of crude lead Fire technology, for the preparation of refining crude lead refined lead, alloys cable, battery technology in a new alloy. The technology now rid of the conventional method common foreign fire refining processes mentioned silver and zinc and processing of bismuth removal from calcium and magnesium. In addition to copper and crude lead by the removal of arsenic, antimony, tin, lead crystal using a continuous desilvering and bismuth, to give a refined lead and silver-rich product. This silver-rich product after vacuum oven to give the crude silver silver-containing more than 90%, can be obtained direct electrolysis fine silver, lead-containing portion may be further refined lead or other alloys produced according to the situation. Crude refining process simplification, reduced consumption, reduced investment, gold, silver extraction is a simple and effective method.
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