Method of producing rapid-hardening cement |
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| 申请号 | US3793036D | 申请日 | 1972-01-13 | 公开(公告)号 | US3793036A | 公开(公告)日 | 1974-02-19 |
| 申请人 | GRACHIAN A; ZUBAR G; GAIDZHUROV P; OZEROV V; YARKNO N; DMITRIEVSKY V; BORODAVKINA V; | 发明人 | BORODAVKINA V; DMITRIEVSKY V; OZEROV V; YARKNO N; GAIDZHUROV P; ZUBAR G; GRACHIAN A; | ||||
| 摘要 | A method of producing rapid-hardening cement, characterized by the use of a mixture of raw materials, comprising from about 27 to about 42 weight percent of iron oxides, said mixture being roasted at a temperature of 980* to 1050*C in a reducing medium. | ||||||
| 权利要求 | 2. The method of claim 1 wherein the reducing agents comprise a mixture of carbon monoxide and hydrogen. 3. The method of claim 2 wherein there is additionally introduced to create the reducing medium up to 5 percent, by weight of the mixture, of ashless coal. |
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