基本信息:
- 专利标题： 황산계 철 전기도금용액의 제2철 이온 제거 방법
- 专利标题（英）：METHOD FOR REMOVING FERRIC IONS FROM SULFATE-BASED IRON ELECTROPLATING SOLUTION
- 申请号：PCT/KR2021/003533 申请日：2021-03-22
- 公开(公告)号：WO2022203095A1 公开(公告)日：2022-09-29
- 发明人： 정진호 , 이원휘 , 오꽃님 , 임상배
- 申请人： 주식회사 포스코
- 申请人地址： 37859 경상북도 포항시 남구 동해안로 6261 (괴동동), Gyeongsangbuk-do
- 专利权人： 주식회사 포스코
- 当前专利权人： 주식회사 포스코
- 当前专利权人地址： 37859 경상북도 포항시 남구 동해안로 6261 (괴동동), Gyeongsangbuk-do
- 代理机构： 특허법인 씨엔에스
- 主分类号： C25D21/18
- IPC分类号： C25D21/18 ; C25D21/06 ; C25D3/20
The present invention relates to a method for effectively removing ferric ions contained in an iron electroplating solution. The method for removing ferric ions contained in a sulfate-based iron electroplating solution comprises a step of regeneration for reduction of the ferric ions by circulating a ferric ion-containing sulfate-based iron electroplating solution in a solution bath containing ferrous metal charged therein, wherein the ferrous metal is charged in an amount that satisfies the following formula (1): S ≥ 0.01 I conv/C max (1). In formula (1), S indicates a total surface area (㎡) of ferrous metal, C max indicates a maximum permissible ion concentration level (g/L) of the ferric ions in the solution, and I conv indicates, as represented by the following formula (2), converted current (A) obtained by dividing the sum of current (I) applied to an electroplated cell during the plating time (t p, sec) by the regeneration time (t r, sec) for reduction of the ferric ions in an electrolyte.
IPC结构图谱:
| C | 化学；冶金 |
| --C25 | 电解或电泳工艺；其所用设备 |
| ----C25D | 覆层的电解或电泳生产工艺方法；电铸；工件的电解法接合；所用的装置 |
| ------C25D21/00 | 电解镀覆用电解槽的维护或操作方法 |
| --------C25D21/12 | .工艺控制或调节 |
| ----------C25D21/18 | ..电解液的 |