| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method of producing cement clinker, in which flammable waste resins having higher flammability than coal fuel is burned as auxiliary fuel in a rotary kiln when cement clinker is fired and by which the content of hexavalent chromium in the cement clinker can be reduced. <P>SOLUTION: In a process for firing cement clinker, the flammable resins having an average diameter of 5 to 30 mm is spouted into a kiln from an injection hole for a mixture of flammable solid particulate fuel and conveying air, which is provided at the outlet side of the cement rotary kiln, so that the flammable resins are burned in a clinker layer. <P>COPYRIGHT: (C)2003,JPO</p> |
