公开(公告)号：US20200270724A1

公开(公告)日：2020-08-27

申请号：US16067943

申请日：2016-12-26

Applicant: Hanergy New Material Technology Co., Ltd

Inventor： Yongtao Gao ,  Junfei Liu ,  Guan Wang ,  Guofa Wu ,  Kan Peng

IPC: C22B15/00 ,  C22B1/06 ,  C22B7/00 ,  C22B3/26 ,  C22B58/00 ,  C25C1/12 ,  C01B19/02 ,  C01G15/00

Abstract: A method for recycling copper indium gallium selenium materials comprises the steps of sulphating roasting, acid dissolution, extraction and electrolysis of metal copper, production of a gallium hydroxide deposition, replacement of indium, and the like. In the method, deselenization is carried by using sulphating roasting, and residues after roasting are oxidizing slags capable of being directly subjected to acid dissolution, thereby reducing acid gas pollution; in addition, copper is extracted by using a copper extractant, the separation effect is good and costs are low, the extracted copper can be directly electrolyzed, so as to obtain high-purity metal copper; and in another aspect, in the method, alkali separation of gallium is carried out, separation between indium and gallium can be implemented by merely adjusting the pH of a solution, thereby resolving the problem of co-extraction in the extraction of indium and gallium and the separation between indium and gallium, the separation effect is good, the purities of obtained indium and gallium products are high.

公开(公告)号：US20200277685A1

公开(公告)日：2020-09-03

申请号：US16068072

申请日：2016-12-26

Applicant: Hanergy New Material Technology Co., Ltd.

Inventor： Junfei Liu ,  Yongtao Gao ,  Guan Wang ,  Guofa Wu ,  Kan Peng

IPC: C22B15/00 ,  C22B7/00

Abstract: Provided is a recovery method for a copper-indium-gallium-selenium material, mainly comprising the steps of sulfuric acid aeration leaching at a high temperature, reducing selenium with sodium sulfite, separating copper by extracting, separating indium and gallium with an alkali, replacing indium, electrolyzing gallium, etc. In the recovery method for a copper-indium-gallium-selenium material, a sulfuric acid aeration leaching means is used, thus reducing acid gas pollution; at the same time, an extraction agent for copper is used to extract copper, wherein the separating effect is good and the cost is low, and the extracted copper is directly electrolyzed so as to obtain a high-purity metal copper; moreover, an alkali is used to separate gallium, wherein realizing the separation of indium and gallium only requires the adjustment of the pH value of a solution, the separating effect is good and the obtained indium and gallium products have a relatively high purity.