发明名称 |
REDUCING AGENT FOR THE SOLUBLE CHROMATE CONTENT OF CEMENT AND METHODS FOR THE PRODUCTION THEREOF |
摘要 |
<p>Producing reducing agent containing iron(II) sulfate comprises concentrating spent sulfuric acid and separating the sulfuric acid from the resulting precipitate. Independent claims are also included for: (a) reducing agent produced as above; (b) composition comprising cement, water-soluble metal sulfates and optionally water, containing 0.01-5 weight % of a reducing agent as above.</p> |
申请公布号 |
EP1648840(A1) |
申请公布日期 |
2006.04.26 |
申请号 |
EP20040741082 |
申请日期 |
2004.07.16 |
申请人 |
KERR-MCGEE PIGMENTS GMBH |
发明人 |
VOESSING, MICHAEL;AUER, GERHARD;LAUBACH, BENNO;KLEIN, DETLEF;SCHUY, WERNER;KOELLISCH, KLAUS;WEISS, ERWIN;BAHL, WERNER;REESE, PHILIP |
分类号 |
C01B17/90;C01G23/053;C01G49/14;C04B22/14;C04B28/02;C22B7/04;(IPC1-7):C04B22/14 |
主分类号 |
C01B17/90 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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