发明名称 |
Process of treatment and environment-friendly utilization of asbestos-cement products |
摘要 |
The invention refers to a process of treatment and environment-friendly utilization of asbestos-cement products including a thermal process to transform the asbestos component. Inventively, this is achieved by a coarse reduction of the asbestos-cement products under black side conditions with maintained vacuum. Then, the material is ground to asbestos-cement meal and fed to the flame zone of the rotary kiln of a cement clinker production line. Depending on the fuel type used, the portion of fed asbestos-cement meal varies between 2 and 5%, related to the amount of cement raw meal, substituting 2 to 5% of the cement raw meal mix at a time. The thermal transformation of the asbestos component takes place with temperatures of approximately 1800 DEG C. in the burner zone. The modified residual substance becomes a constituent of the cement clinker due to assimilation in the kiln charge.
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申请公布号 |
US5676750(A) |
申请公布日期 |
1997.10.14 |
申请号 |
US19950492727 |
申请日期 |
1995.06.20 |
申请人 |
INSTITUT FUR BAUSTOFF- UND UMWELTSHCUTZ-TECHNOLOGIE IBU-TEC |
发明人 |
GLEICHMAR, GERT;KIESER, JOACHIM;AMBROSIUS, STEFAN;GOERMAR, HELMUT;KRAEHNER, ARNO;BUHRANDT, WOLF-JOACHIM |
分类号 |
C04B14/40;A62D3/00;B09B3/00;C04B7/24;(IPC1-7):C04B7/52;C04B18/04 |
主分类号 |
C04B14/40 |
代理机构 |
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