The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 28, 2017
Filed:
May. 27, 2014
Chilwee Power Co. Ltd, Zhicheng, Changxing, CN;
Beijing University of Chemical Technology, ChaoYang District, Beijing, CN;
Junqing Pan, Changxing, CN;
Xiaowei Liu, Changxing, CN;
Yanzhi Sun, Changxing, CN;
Yongquan Ma, Changxing, CN;
Yinjian Niu, Changxing, CN;
Tixian Chen, Changxing, CN;
Xuan Zhang, Changxing, CN;
Xiaoxiang Cai, Changxing, CN;
Shuang Song, Changxing, CN;
Mingming Zhou, Changxing, CN;
Longrui Zhou, Changxing, CN;
Guoqing Cao, Changxing, CN;
Xinxin Yang, Changxing, CN;
Jianglin Wang, Changxing, CN;
Xin Wu, Changxing, CN;
Abstract
Provided is a method for recycling a lead oxide-containing waste material, comprising: (1) contacting the lead oxide-containing waste material with a desulphurizer under desulphurization reaction conditions, and performing a solid-liquid separation on the mixture after contacting to obtain a filtrate and a filtration residue; (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; (3) contacting the product obtained from step (2) with an alkaline solution so as to dissolve the PbO therein, and then performing a solid-liquid separation to obtain a PbO-alkaline solution; and (4) crystallizing the PbO-alkaline solution from step (3) to obtain PbO crystals and an alkaline filtrate. The method can reduce the energy consumption.