VERTICAL TYPE ROLLER MILL AND PULVERIZING METHOD USING VERTICAL TYPE ROLLER MILL

摘要

PROBLEM TO BE SOLVED: To provide a vertical type roller mill capable of making a pulverization roller and a pulverization table stably bite an object to be pulverized even when a moisture content of the object to be pulverized is not suitable.;SOLUTION: In the pulverizing method using the vertical type roller mill, the object to be pulverized fed to the vertical type roller mill from the outside is firstly sorted to a normal object N to be pulverized having a particle diameter less than a predetermined first particle diameter and a bulky object M to be pulverized having a particle diameter of the first particle diameter or more. Nextly, while the normal object N to be pulverized is fed onto the rotating pulverization table 22, the pulverization table 22 and the pulverization roller 23 are made to bite the normal object N to be pulverized to perform pulverization. Then, when the generation of a biting failure of the normal object N to be pulverized between the pulverization table 22 and the pulverization roller 23 is detected during the pulverization step, the bulky object M to be pulverized is added/fed onto the rotating pulverization table 22 and a mixture of the normal object N to be pulverized and the bulky object M to be pulverized is bitten between the pulverization table 22 and the pulverization roller 23 to perform pulverization.;COPYRIGHT: (C)2007,JPO&INPIT