| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a cement production method capable of producing cement while preventing toxic substances such as mercury or dioxins from accumulating in a cement production facility. <P>SOLUTION: In the cement production method wherein the combustion exhaust gas produced in a rotary kiln 1 for firing a cement raw material A is discharged from a chimney 5 after it is passed through a preheater 2 for preheating the cement raw material A, a drier 3 for drying the cement raw material A and a dust collector 4, part of the exhaust gas passing through a pipe or an apparatus present between the exit of the preheater 2 and the chimney 5 and having a temperature of 350°C or higher is extracted, and toxic substances such as mercury or dioxins contained in the gas are condensed and removed. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
