Title:
METHOD FOR SEPARATING AND PURIFYING TIN AND COPPER FROM TIN REFINING SULFUR SLAG
Document Type and Number:
WIPO Patent Application WO/2023/134017
Kind Code:
A1
Abstract:
The present invention relates to the technical field of separation and purification, and provides a method for separating and purifying tin and copper from tin refining sulfur slag. According to the present invention, tin refining sulfur slag and a vulcanizing agent are mixed and then briquetted, so that the speed of decomposing the vulcanizing agent to generate sulfur vapor can be controlled, and the situation that most sulfur vapor quickly volatilizes to a furnace wall without reacting with tin in time, resulting in reduction of vulcanization efficiency and waste of sulfur, as well as environmental pollution and furnace wall corrosion caused by sulfur vapor volatilization, is avoided; moreover, by means of briquetting, the contact among particles is more sufficient, and the contact between sulfur released by decomposition of the vulcanizing agent and the tin is more complete, so that the vulcanization of the tin is more sufficient; the briquetting can also avoid material gushing caused by quick decomposition of the vulcanizing agent during reaction, so that the situation that the direct mixing of some unreacted materials with condensed products affects the tin-copper separation effect is avoided, the reaction process is more controllable, and the separation efficiency is higher. According to the method provided by the present invention, the direct recovery rate of tin is greater than 99.5%, and the direct recovery rate of copper is greater than 99%.
Inventors:
XU BAOQIANG (CN)
YANG BIN (CN)
WANG JI (CN)
LI YIFU (CN)
TIAN YANG (CN)
JIANG WENLONG (CN)
WANG FEI (CN)
XIONG HENG (CN)
KONG LINGXIN (CN)
QU TAO (CN)
YANG JIA (CN)
YANG BIN (CN)
WANG JI (CN)
LI YIFU (CN)
TIAN YANG (CN)
JIANG WENLONG (CN)
WANG FEI (CN)
XIONG HENG (CN)
KONG LINGXIN (CN)
QU TAO (CN)
YANG JIA (CN)
Application Number:
PCT/CN2022/082640
Publication Date:
July 20, 2023
Filing Date:
March 24, 2022
Export Citation:
Assignee:
UNIV KUNMING SCIENCE & TECHNOLOGY (CN)
International Classes:
C22B7/04; C22B1/24; C22B15/00; C22B25/02; C22B25/06
Foreign References:
| CN103589870A | 2014-02-19 | |||
| CN112375917A | 2021-02-19 | |||
| CN107619936A | 2018-01-23 | |||
| CN103194621A | 2013-07-10 | |||
| CN109797288A | 2019-05-24 | |||
| CN112080646A | 2020-12-15 | |||
| CN107557585A | 2018-01-09 | |||
| US4304596A | 1981-12-08 | |||
| JPS51126911A | 1976-11-05 |
Attorney, Agent or Firm:
BEIJING GAOWO LAW FIRM (CN)
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