Method for removing arsenic, antimony and copper by refining raw lead

• Main Authors: CHEN SHUN, LI ZHENGMING, KUANG LICHUN, ZHANG WEI, LU PENGLONG, DOU CHUANLONG, ZHANG DEJING
• Format: Patent
• Language: Chinese; English
• Published: 13.04.2011
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; FERROUS OR NON-FERROUS ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a method for removing arsenic, antimony and copper by refining raw lead. The invention aims to provide the method for removing the arsenic, antimony and copper by refining the raw lead. The method is characterized by comprising the following steps of: A, putting raw lead ingots into an open lead melting pot, and heating the raw lead ingots to the temperature of between 450 and 850 DEG C for melting lead into lead liquid; B, putting aluminum or aluminum alloy into the lead liquid obtained in the step A, fully mixing the aluminum or the aluminum alloy and the lead liquid with stirring, and generating scum which floats to the surface of the lead liquid; C, fishing the scum, namely fishing the scum generated in the step B after stirring to obtain the lead liquid removed with arsenic, antimony and copper; and D, casting ingots, namely casting the ingots by using the impurity removed lead liquid obtained in the step C to obtain lead ingots removed with the arsenic, antimony and copper. The m