METHOD FOR DIRECTLY RECOVERING LEAD OXIDE USED FOR A LEAD-ACID BATTERY CATHODE FROM WASTE LEAD PASTE
摘要
Provided is a method for directly recovering lead oxide used for a lead-acid battery negative electrode from waste lead paste. The method comprises: (1) contacting waste lead paste with a barium-containing desulphurizer under desulphurization reaction conditions, and performing a solid-liquid separation on the mixture after contacting to obtain a filtrate and a filtration residue; and (2) performing a conversion reaction on the above-mentioned filtration residue at a temperature of 350-750°C so as to convert the lead-containing components in the filtration residue into lead oxide. In the method, the direct recovery of a lead oxide raw material applicable to a lead-acid battery negative electrode from waste lead paste is achieved by quantitatively replenishing a barium sulphate additive in the process of desulphuration, thereby substantially decreasing the recovery cost and energy consumption, and improving the comprehensive utilization of waste lead paste.
申请公布号
EP3012335(A4)
申请公布日期
2016.09.07
申请号
EP20140883113
申请日期
2014.05.27
申请人
CHILWEE POWER CO. LTD.;BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY