发明申请
US20120137934A1 REDUCING AGENT FOR THE SOLUBLE CHROMATE CONTENT OF CEMENT AND METHODS FOR PRODUCTION THEREOF
有权
用于水泥的可溶性铬酸盐含量的还原剂及其生产方法
- 专利标题: REDUCING AGENT FOR THE SOLUBLE CHROMATE CONTENT OF CEMENT AND METHODS FOR PRODUCTION THEREOF
- 专利标题(中): 用于水泥的可溶性铬酸盐含量的还原剂及其生产方法
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申请号: US13371783申请日: 2012-02-13
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公开(公告)号: US20120137934A1公开(公告)日: 2012-06-07
- 发明人: Michael VÖSSING , Gerhard AUER , Benno LAUBACH , Detlef KLEIN , Werner SCHUY , Klaus KÖLLISCH , Erwin WEISS , Werner BAHL , Philip REESE
- 申请人: Michael VÖSSING , Gerhard AUER , Benno LAUBACH , Detlef KLEIN , Werner SCHUY , Klaus KÖLLISCH , Erwin WEISS , Werner BAHL , Philip REESE
- 申请人地址: DE Krefeld
- 专利权人: Kerr-McGee Pigments GmbH
- 当前专利权人: Kerr-McGee Pigments GmbH
- 当前专利权人地址: DE Krefeld
- 优先权: DE10332530.1 20030717
- 主分类号: C04B22/08
- IPC分类号: C04B22/08 ; C04B14/00
摘要:
The invention relates to a reducing agent for the soluble chromate content of cement and to methods for the production thereof, which comprise concentrating an used sulfuric acid, containing iron (II) sulfate, and separating the sulfuric acid from the obtained precipitate which contains iron (II) sulfate.
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